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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Maruyama%2C+T&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Maruyama%2C+T&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Maruyama%2C+T&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.16384">arXiv:2502.16384</a> <span> [<a href="https://arxiv.org/pdf/2502.16384">pdf</a>, <a href="https://arxiv.org/format/2502.16384">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> A muon tagging with Flash ADC waveform baselines </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+Y">J. Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hwang%2C+W">W. Hwang</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+M">E. M. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+Y">S. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kinoshita%2C+H">H. Kinoshita</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+T">T. Konno</a>, <a href="/search/physics?searchtype=author&query=Little%2C+C">C. Little</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a> , et al. (32 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2502.16384v1-abstract-short" style="display: inline;"> This manuscript describes an innovative method to tag the muons using the baseline information of the Flash ADC (FADC) waveform of PMTs in the JSNS1 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment. This experiment is designed for the search for sterile neutrinos, and a muon tagging is an essential key component for the background rejection since the detector of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.16384v1-abstract-full').style.display = 'inline'; document.getElementById('2502.16384v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.16384v1-abstract-full" style="display: none;"> This manuscript describes an innovative method to tag the muons using the baseline information of the Flash ADC (FADC) waveform of PMTs in the JSNS1 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment. This experiment is designed for the search for sterile neutrinos, and a muon tagging is an essential key component for the background rejection since the detector of the experiment is located over-ground, where is the 3rd floor of the J-PARC Material and Life experimental facility (MLF). Especially, stopping muons inside the detector create the Michel electrons, and they are important background to be rejected. Utilizing this innovative method, more than 99.8% of Michel electrons can be rejected even without a detector veto region. This technique can be employed for any experiments which uses the similar detector configurations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.16384v1-abstract-full').style.display = 'none'; document.getElementById('2502.16384v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.04709">arXiv:2412.04709</a> <span> [<a href="https://arxiv.org/pdf/2412.04709">pdf</a>, <a href="https://arxiv.org/ps/2412.04709">ps</a>, <a href="https://arxiv.org/format/2412.04709">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Photon vortex generation from nonlinear Compton scattering in Feynman approach </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Tomoyuki Maruyama</a>, <a href="/search/physics?searchtype=author&query=Hayakawa%2C+T">Takehito Hayakawa</a>, <a href="/search/physics?searchtype=author&query=Hajima%2C+R">Ryoichi Hajima</a>, <a href="/search/physics?searchtype=author&query=Kajino%2C+T">Toshitaka Kajino</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M">Myung-Ki Cheoun</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2412.04709v1-abstract-short" style="display: inline;"> In the present study, we show calculation of nonlinear Compton scattering with circularly polarized photons in a cylindrical coordinate using Feynman diagram to calculate photon vortex generation in intermediate states considering conservation of angular momentum. We take two different vortex wave functions based on Bessel function for the emitted photon and the electron after emission of the phot… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.04709v1-abstract-full').style.display = 'inline'; document.getElementById('2412.04709v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.04709v1-abstract-full" style="display: none;"> In the present study, we show calculation of nonlinear Compton scattering with circularly polarized photons in a cylindrical coordinate using Feynman diagram to calculate photon vortex generation in intermediate states considering conservation of angular momentum. We take two different vortex wave functions based on Bessel function for the emitted photon and the electron after emission of the photon, which are the eigenstate of z component of the total angular momentum (zTAM) when a particle propagates along z axis. The result shows that when an electron absorbs N photons a photon vortex with a zTAM = N is predominantly radiated, but there are still very small contributions of photons with a zTAM = (N-1) and (N +1) due to the spin flip of the initial electron. This means even when an electron absorbs only a single photon, the electron may emit a photon vortex of a zTAM of 2 h-bar. However, the numerical calculations show that the contribution of the spin flip is four orders of magnitude smaller than that of the dominant radiation. We also discuss the circular polarization for the generated photon vortices. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.04709v1-abstract-full').style.display = 'none'; document.getElementById('2412.04709v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.14253">arXiv:2405.14253</a> <span> [<a href="https://arxiv.org/pdf/2405.14253">pdf</a>, <a href="https://arxiv.org/format/2405.14253">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> </div> </div> <p class="title is-5 mathjax"> Higher-Rank Irreducible Cartesian Tensors for Equivariant Message Passing </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zaverkin%2C+V">Viktor Zaverkin</a>, <a href="/search/physics?searchtype=author&query=Alesiani%2C+F">Francesco Alesiani</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Takashi Maruyama</a>, <a href="/search/physics?searchtype=author&query=Errica%2C+F">Federico Errica</a>, <a href="/search/physics?searchtype=author&query=Christiansen%2C+H">Henrik Christiansen</a>, <a href="/search/physics?searchtype=author&query=Takamoto%2C+M">Makoto Takamoto</a>, <a href="/search/physics?searchtype=author&query=Weber%2C+N">Nicolas Weber</a>, <a href="/search/physics?searchtype=author&query=Niepert%2C+M">Mathias Niepert</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.14253v2-abstract-short" style="display: inline;"> The ability to perform fast and accurate atomistic simulations is crucial for advancing the chemical sciences. By learning from high-quality data, machine-learned interatomic potentials achieve accuracy on par with ab initio and first-principles methods at a fraction of their computational cost. The success of machine-learned interatomic potentials arises from integrating inductive biases such as… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14253v2-abstract-full').style.display = 'inline'; document.getElementById('2405.14253v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.14253v2-abstract-full" style="display: none;"> The ability to perform fast and accurate atomistic simulations is crucial for advancing the chemical sciences. By learning from high-quality data, machine-learned interatomic potentials achieve accuracy on par with ab initio and first-principles methods at a fraction of their computational cost. The success of machine-learned interatomic potentials arises from integrating inductive biases such as equivariance to group actions on an atomic system, e.g., equivariance to rotations and reflections. In particular, the field has notably advanced with the emergence of equivariant message passing. Most of these models represent an atomic system using spherical tensors, tensor products of which require complicated numerical coefficients and can be computationally demanding. Cartesian tensors offer a promising alternative, though state-of-the-art methods lack flexibility in message-passing mechanisms, restricting their architectures and expressive power. This work explores higher-rank irreducible Cartesian tensors to address these limitations. We integrate irreducible Cartesian tensor products into message-passing neural networks and prove the equivariance and traceless property of the resulting layers. Through empirical evaluations on various benchmark data sets, we consistently observe on-par or better performance than that of state-of-the-art spherical and Cartesian models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14253v2-abstract-full').style.display = 'none'; document.getElementById('2405.14253v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted at NeurIPS 2024 (camera-ready version)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.04153">arXiv:2404.04153</a> <span> [<a href="https://arxiv.org/pdf/2404.04153">pdf</a>, <a href="https://arxiv.org/format/2404.04153">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2025.170216">10.1016/j.nima.2025.170216 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evaluation of the performance of the event reconstruction algorithms in the JSNS$^2$ experiment using a $^{252}$Cf calibration source </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+Y">J. Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hwang%2C+W">W. Hwang</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kinoshita%2C+H">H. Kinoshita</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+T">T. Konno</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+I+T">I. T. Lim</a> , et al. (28 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.04153v3-abstract-short" style="display: inline;"> JSNS$^2$ searches for short baseline neutrino oscillations with a baseline of 24~meters and a target of 17~tonnes of the Gd-loaded liquid scintillator. The correct algorithm on the event reconstruction of events, which determines the position and energy of neutrino interactions in the detector, are essential for the physics analysis of the data from the experiment. Therefore, the performance of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04153v3-abstract-full').style.display = 'inline'; document.getElementById('2404.04153v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.04153v3-abstract-full" style="display: none;"> JSNS$^2$ searches for short baseline neutrino oscillations with a baseline of 24~meters and a target of 17~tonnes of the Gd-loaded liquid scintillator. The correct algorithm on the event reconstruction of events, which determines the position and energy of neutrino interactions in the detector, are essential for the physics analysis of the data from the experiment. Therefore, the performance of the event reconstruction is carefully checked with calibrations using $^{252}$Cf source. This manuscript describes the methodology and the performance of the event reconstruction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04153v3-abstract-full').style.display = 'none'; document.getElementById('2404.04153v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Inst. Meth. A 1072 (2025) 170216 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.03679">arXiv:2404.03679</a> <span> [<a href="https://arxiv.org/pdf/2404.03679">pdf</a>, <a href="https://arxiv.org/format/2404.03679">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptaf016">10.1093/ptep/ptaf016 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Pulse Shape Discrimination in JSNS$^2$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+Y">J. Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hwang%2C+W">W. Hwang</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kinoshita%2C+H">H. Kinoshita</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+T">T. Konno</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+I+T">I. T. Lim</a> , et al. (29 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.03679v3-abstract-short" style="display: inline;"> JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\bar谓_渭 \rightarrow \bar谓_e$ appearance oscillations using neutrinos with muon decay-at-rest. For this search, rejecting cosmic-ray-induced neutron events by Pulse Shape Discrimination (PSD) is essential because the JSNS$^2$ detector is loca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03679v3-abstract-full').style.display = 'inline'; document.getElementById('2404.03679v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.03679v3-abstract-full" style="display: none;"> JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\bar谓_渭 \rightarrow \bar谓_e$ appearance oscillations using neutrinos with muon decay-at-rest. For this search, rejecting cosmic-ray-induced neutron events by Pulse Shape Discrimination (PSD) is essential because the JSNS$^2$ detector is located above ground, on the third floor of the building. We have achieved 95$\%$ rejection of neutron events while keeping 90$\%$ of signal, electron-like events using a data driven likelihood method. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03679v3-abstract-full').style.display = 'none'; document.getElementById('2404.03679v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">arXiv admin note: text overlap with arXiv:2111.07482, arXiv:2308.02722</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> PTEP 2025 023H02 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.01887">arXiv:2309.01887</a> <span> [<a href="https://arxiv.org/pdf/2309.01887">pdf</a>, <a href="https://arxiv.org/format/2309.01887">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/18/12/T12001">10.1088/1748-0221/18/12/T12001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The acrylic vessel for JSNS$^{2}$-II neutrino target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shin%2C+C+D">C. D. Shin</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+Y">J. Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Hwang%2C+W">W. Hwang</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+H">H. Jeon</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+S">S. Jeon</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B. Kim</a> , et al. (35 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.01887v2-abstract-short" style="display: inline;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment designed for the search for sterile neutrinos. The experiment is currently at the stage of the second phase named JSNS$^{2}$-II with two detectors at near and far locations from the neutrino source. One of the key components of the experiment is an acrylic vessel, that is used for the target volume… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.01887v2-abstract-full').style.display = 'inline'; document.getElementById('2309.01887v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.01887v2-abstract-full" style="display: none;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment designed for the search for sterile neutrinos. The experiment is currently at the stage of the second phase named JSNS$^{2}$-II with two detectors at near and far locations from the neutrino source. One of the key components of the experiment is an acrylic vessel, that is used for the target volume for the detection of the anti-neutrinos. The specifications, design, and measured properties of the acrylic vessel are described. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.01887v2-abstract-full').style.display = 'none'; document.getElementById('2309.01887v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2023 JINST 18 T12001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.02722">arXiv:2308.02722</a> <span> [<a href="https://arxiv.org/pdf/2308.02722">pdf</a>, <a href="https://arxiv.org/format/2308.02722">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-024-12778-7">10.1140/epjc/s10052-024-12778-7 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study on the accidental background of the JSNS$^2$ experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+Y">J. Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Hwang%2C+W">W. Hwang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+H">H. Jeon</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+S">S. Jeon</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W">W. Kim</a> , et al. (33 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.02722v2-abstract-short" style="display: inline;"> JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment which searches for sterile neutrinos via the observation of $\bar谓_渭 \to \bar谓_{e}$ appearance oscillations using muon decay-at-rest neutrinos. The data taking of JSNS$^2$ have been performed from 2021. In this manuscript, a study of the accidental background is presented. The rate of the accidental back… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.02722v2-abstract-full').style.display = 'inline'; document.getElementById('2308.02722v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.02722v2-abstract-full" style="display: none;"> JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment which searches for sterile neutrinos via the observation of $\bar谓_渭 \to \bar谓_{e}$ appearance oscillations using muon decay-at-rest neutrinos. The data taking of JSNS$^2$ have been performed from 2021. In this manuscript, a study of the accidental background is presented. The rate of the accidental background is (9.29$\pm 0.39) \times 10^{-8}$ / spill with 0.75 MW beam power and comparable to the number of searching signals. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.02722v2-abstract-full').style.display = 'none'; document.getElementById('2308.02722v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">arXiv admin note: substantial text overlap with arXiv:2111.07482</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 84, 409 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.00907">arXiv:2211.00907</a> <span> [<a href="https://arxiv.org/pdf/2211.00907">pdf</a>, <a href="https://arxiv.org/ps/2211.00907">ps</a>, <a href="https://arxiv.org/format/2211.00907">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> </div> <p class="title is-5 mathjax"> Effects of electromagnetic fluctuations in plasmas on solar neutrino fluxes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hwang%2C+E">Eunseok Hwang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+D">Dukjae Jang</a>, <a href="/search/physics?searchtype=author&query=Park%2C+K">Kiwan Park</a>, <a href="/search/physics?searchtype=author&query=Kusakabe%2C+M">Motohiko Kusakabe</a>, <a href="/search/physics?searchtype=author&query=Kajino%2C+T">Toshitaka Kajino</a>, <a href="/search/physics?searchtype=author&query=Balantekin%2C+A+B">A. Baha Balantekin</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Tomoyuki Maruyama</a>, <a href="/search/physics?searchtype=author&query=Kwon%2C+Y">Youngshin Kwon</a>, <a href="/search/physics?searchtype=author&query=Kwak%2C+K">Kyujin Kwak</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M">Myung-Ki Cheoun</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2211.00907v1-abstract-short" style="display: inline;"> We explore the effects of electromagnetic (EM) fluctuations in plasmas on solar neutrino fluxes exploiting the fluctuation-dissipation theorem. We find that the EM spectrum in the solar core is enhanced by the EM fluctuations due to the high density of the Sun, which increases the radiation energy density and pressure. By the EM fluctuations involving the modified radiation formula, the central te… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.00907v1-abstract-full').style.display = 'inline'; document.getElementById('2211.00907v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.00907v1-abstract-full" style="display: none;"> We explore the effects of electromagnetic (EM) fluctuations in plasmas on solar neutrino fluxes exploiting the fluctuation-dissipation theorem. We find that the EM spectrum in the solar core is enhanced by the EM fluctuations due to the high density of the Sun, which increases the radiation energy density and pressure. By the EM fluctuations involving the modified radiation formula, the central temperature decreases when the central pressure of the Sun is fixed. With a help of the empirical relation between central temperature and neutrino fluxes deduced from the numerical solar models, we present the change in each of the solar neutrino fluxes by the EM fluctuations. We also discuss the enhanced radiation pressure and energy density by the EM fluctuations for other astronomical objects. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.00907v1-abstract-full').style.display = 'none'; document.getElementById('2211.00907v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.12982">arXiv:2207.12982</a> <span> [<a href="https://arxiv.org/pdf/2207.12982">pdf</a>, <a href="https://arxiv.org/format/2207.12982">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Scintillator ageing of the T2K near detectors from 2010 to 2021 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+T2K+Collaboration"> The T2K Collaboration</a>, <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Akhlaq%2C+N">N. Akhlaq</a>, <a href="/search/physics?searchtype=author&query=Akutsu%2C+R">R. Akutsu</a>, <a href="/search/physics?searchtype=author&query=Ali%2C+A">A. Ali</a>, <a href="/search/physics?searchtype=author&query=Alt%2C+C">C. Alt</a>, <a href="/search/physics?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/physics?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Arihara%2C+T">T. Arihara</a>, <a href="/search/physics?searchtype=author&query=Asada%2C+Y">Y. Asada</a>, <a href="/search/physics?searchtype=author&query=Ashida%2C+Y">Y. Ashida</a>, <a href="/search/physics?searchtype=author&query=Atkin%2C+E+T">E. T. Atkin</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/physics?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/physics?searchtype=author&query=Barrow%2C+D">D. Barrow</a>, <a href="/search/physics?searchtype=author&query=Batkiewicz-Kwasniak%2C+M">M. Batkiewicz-Kwasniak</a>, <a href="/search/physics?searchtype=author&query=Bench%2C+F">F. Bench</a>, <a href="/search/physics?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/physics?searchtype=author&query=Berns%2C+L">L. Berns</a>, <a href="/search/physics?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/physics?searchtype=author&query=Blanchet%2C+A">A. Blanchet</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a> , et al. (333 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2207.12982v1-abstract-short" style="display: inline;"> The T2K experiment widely uses plastic scintillator as a target for neutrino interactions and an active medium for the measurement of charged particles produced in neutrino interactions at its near detector complex. Over 10 years of operation the measured light yield recorded by the scintillator based subsystems has been observed to degrade by 0.9--2.2\% per year. Extrapolation of the degradation… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.12982v1-abstract-full').style.display = 'inline'; document.getElementById('2207.12982v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.12982v1-abstract-full" style="display: none;"> The T2K experiment widely uses plastic scintillator as a target for neutrino interactions and an active medium for the measurement of charged particles produced in neutrino interactions at its near detector complex. Over 10 years of operation the measured light yield recorded by the scintillator based subsystems has been observed to degrade by 0.9--2.2\% per year. Extrapolation of the degradation rate through to 2040 indicates the recorded light yield should remain above the lower threshold used by the current reconstruction algorithms for all subsystems. This will allow the near detectors to continue contributing to important physics measurements during the T2K-II and Hyper-Kamiokande eras. Additionally, work to disentangle the degradation of the plastic scintillator and wavelength shifting fibres shows that the reduction in light yield can be attributed to the ageing of the plastic scintillator. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.12982v1-abstract-full').style.display = 'none'; document.getElementById('2207.12982v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">29 pages, 18 figures. Prepared for submission to JINST</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.07681">arXiv:2206.07681</a> <span> [<a href="https://arxiv.org/pdf/2206.07681">pdf</a>, <a href="https://arxiv.org/format/2206.07681">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> </div> </div> <p class="title is-5 mathjax"> Learning to Accelerate Partial Differential Equations via Latent Global Evolution </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wu%2C+T">Tailin Wu</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Takashi Maruyama</a>, <a href="/search/physics?searchtype=author&query=Leskovec%2C+J">Jure Leskovec</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.07681v2-abstract-short" style="display: inline;"> Simulating the time evolution of Partial Differential Equations (PDEs) of large-scale systems is crucial in many scientific and engineering domains such as fluid dynamics, weather forecasting and their inverse optimization problems. However, both classical solvers and recent deep learning-based surrogate models are typically extremely computationally intensive, because of their local evolution: th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.07681v2-abstract-full').style.display = 'inline'; document.getElementById('2206.07681v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.07681v2-abstract-full" style="display: none;"> Simulating the time evolution of Partial Differential Equations (PDEs) of large-scale systems is crucial in many scientific and engineering domains such as fluid dynamics, weather forecasting and their inverse optimization problems. However, both classical solvers and recent deep learning-based surrogate models are typically extremely computationally intensive, because of their local evolution: they need to update the state of each discretized cell at each time step during inference. Here we develop Latent Evolution of PDEs (LE-PDE), a simple, fast and scalable method to accelerate the simulation and inverse optimization of PDEs. LE-PDE learns a compact, global representation of the system and efficiently evolves it fully in the latent space with learned latent evolution models. LE-PDE achieves speed-up by having a much smaller latent dimension to update during long rollout as compared to updating in the input space. We introduce new learning objectives to effectively learn such latent dynamics to ensure long-term stability. We further introduce techniques for speeding-up inverse optimization of boundary conditions for PDEs via backpropagation through time in latent space, and an annealing technique to address the non-differentiability and sparse interaction of boundary conditions. We test our method in a 1D benchmark of nonlinear PDEs, 2D Navier-Stokes flows into turbulent phase and an inverse optimization of boundary conditions in 2D Navier-Stokes flow. Compared to state-of-the-art deep learning-based surrogate models and other strong baselines, we demonstrate up to 128x reduction in the dimensions to update, and up to 15x improvement in speed, while achieving competitive accuracy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.07681v2-abstract-full').style.display = 'none'; document.getElementById('2206.07681v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">NeurIPS 2022; 30 pages, 15 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.07323">arXiv:2203.07323</a> <span> [<a href="https://arxiv.org/pdf/2203.07323">pdf</a>, <a href="https://arxiv.org/format/2203.07323">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6471/ad307f">10.1088/1361-6471/ad307f <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> White Paper on Light Sterile Neutrino Searches and Related Phenomenology </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Acero%2C+M+A">M. A. Acero</a>, <a href="/search/physics?searchtype=author&query=Arg%C3%BCelles%2C+C+A">C. A. Arg眉elles</a>, <a href="/search/physics?searchtype=author&query=Hostert%2C+M">M. Hostert</a>, <a href="/search/physics?searchtype=author&query=Kalra%2C+D">D. Kalra</a>, <a href="/search/physics?searchtype=author&query=Karagiorgi%2C+G">G. Karagiorgi</a>, <a href="/search/physics?searchtype=author&query=Kelly%2C+K+J">K. J. Kelly</a>, <a href="/search/physics?searchtype=author&query=Littlejohn%2C+B">B. Littlejohn</a>, <a href="/search/physics?searchtype=author&query=Machado%2C+P">P. Machado</a>, <a href="/search/physics?searchtype=author&query=Pettus%2C+W">W. Pettus</a>, <a href="/search/physics?searchtype=author&query=Toups%2C+M">M. Toups</a>, <a href="/search/physics?searchtype=author&query=Ross-Lonergan%2C+M">M. Ross-Lonergan</a>, <a href="/search/physics?searchtype=author&query=Sousa%2C+A">A. Sousa</a>, <a href="/search/physics?searchtype=author&query=Surukuchi%2C+P+T">P. T. Surukuchi</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+Y+Y+Y">Y. Y. Y. Wong</a>, <a href="/search/physics?searchtype=author&query=Abdallah%2C+W">W. Abdallah</a>, <a href="/search/physics?searchtype=author&query=Abdullahi%2C+A+M">A. M. Abdullahi</a>, <a href="/search/physics?searchtype=author&query=Akutsu%2C+R">R. Akutsu</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Ruso%2C+L">L. Alvarez-Ruso</a>, <a href="/search/physics?searchtype=author&query=Alves%2C+D+S+M">D. S. M. Alves</a>, <a href="/search/physics?searchtype=author&query=Aurisano%2C+A">A. Aurisano</a>, <a href="/search/physics?searchtype=author&query=Balantekin%2C+A+B">A. B. Balantekin</a>, <a href="/search/physics?searchtype=author&query=Berryman%2C+J+M">J. M. Berryman</a>, <a href="/search/physics?searchtype=author&query=Bert%C3%B3lez-Mart%C3%ADnez%2C+T">T. Bert贸lez-Mart铆nez</a>, <a href="/search/physics?searchtype=author&query=Brunner%2C+J">J. Brunner</a>, <a href="/search/physics?searchtype=author&query=Blennow%2C+M">M. Blennow</a> , et al. (147 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.07323v3-abstract-short" style="display: inline;"> This white paper provides a comprehensive review of our present understanding of experimental neutrino anomalies that remain unresolved, charting the progress achieved over the last decade at the experimental and phenomenological level, and sets the stage for future programmatic prospects in addressing those anomalies. It is purposed to serve as a guiding and motivational "encyclopedic" reference,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.07323v3-abstract-full').style.display = 'inline'; document.getElementById('2203.07323v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.07323v3-abstract-full" style="display: none;"> This white paper provides a comprehensive review of our present understanding of experimental neutrino anomalies that remain unresolved, charting the progress achieved over the last decade at the experimental and phenomenological level, and sets the stage for future programmatic prospects in addressing those anomalies. It is purposed to serve as a guiding and motivational "encyclopedic" reference, with emphasis on needs and options for future exploration that may lead to the ultimate resolution of the anomalies. We see the main experimental, analysis, and theory-driven thrusts that will be essential to achieving this goal being: 1) Cover all anomaly sectors -- given the unresolved nature of all four canonical anomalies, it is imperative to support all pillars of a diverse experimental portfolio, source, reactor, decay-at-rest, decay-in-flight, and other methods/sources, to provide complementary probes of and increased precision for new physics explanations; 2) Pursue diverse signatures -- it is imperative that experiments make design and analysis choices that maximize sensitivity to as broad an array of these potential new physics signatures as possible; 3) Deepen theoretical engagement -- priority in the theory community should be placed on development of standard and beyond standard models relevant to all four short-baseline anomalies and the development of tools for efficient tests of these models with existing and future experimental datasets; 4) Openly share data -- Fluid communication between the experimental and theory communities will be required, which implies that both experimental data releases and theoretical calculations should be publicly available; and 5) Apply robust analysis techniques -- Appropriate statistical treatment is crucial to assess the compatibility of data sets within the context of any given model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.07323v3-abstract-full').style.display = 'none'; document.getElementById('2203.07323v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Contribution to Snowmass 2021 by the NF02 Topical Group (Understanding Experimental Neutrino Anomalies). Published in J. Phys. G as a Major Report</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. Phys. G: Nucl. Part. Phys. 51 120501 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.13169">arXiv:2104.13169</a> <span> [<a href="https://arxiv.org/pdf/2104.13169">pdf</a>, <a href="https://arxiv.org/format/2104.13169">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2021.165742">10.1016/j.nima.2021.165742 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The JSNS^2 Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Botran%2C+M">M. Botran</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+W">J. W. Choi</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Haga%2C+K">K. Haga</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hino%2C+Y">Y. Hino</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+M+C">M. C. Jang</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+H">H. Jeon</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+S">S. Jeon</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jordan%2C+J+R">J. R. Jordan</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a> , et al. (41 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2104.13169v2-abstract-short" style="display: inline;"> The JSNS^2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for oscillations involving a sterile neutrino in the eV^2 mass-splitting range. The experiment will search for the appearance of electron antineutrinos oscillated from muon antineutrinos. The electron antineutrinos are detected via the inverse beta decay process using a liquid scintillator det… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.13169v2-abstract-full').style.display = 'inline'; document.getElementById('2104.13169v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.13169v2-abstract-full" style="display: none;"> The JSNS^2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for oscillations involving a sterile neutrino in the eV^2 mass-splitting range. The experiment will search for the appearance of electron antineutrinos oscillated from muon antineutrinos. The electron antineutrinos are detected via the inverse beta decay process using a liquid scintillator detector. A 1MW beam of 3 GeV protons incident on a spallation neutron target produces an intense and pulsed neutrino source from pion, muon, and kaon decay at rest. The JSNS^2 detector is located 24 m away from the neutrino source and began operation from June 2020. The detector contains 17 tonnes of gadolinium (Gd) loaded liquid scintillator (LS) in an acrylic vessel, as a neutrino target. It is surrounded by 31 tonnes of unloaded LS in a stainless steel tank. Optical photons produced in LS are viewed by 120 R7081 Hamamatsu 10-inch Photomultiplier Tubes (PMTs). In this paper, we describe the JSNS^2 detector design, construction, and operation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.13169v2-abstract-full').style.display = 'none'; document.getElementById('2104.13169v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">41 pages, 29 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.00670">arXiv:2006.00670</a> <span> [<a href="https://arxiv.org/pdf/2006.00670">pdf</a>, <a href="https://arxiv.org/format/2006.00670">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> The JSNS$^{2}$ data acquisition system </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Park%2C+J+S">J. S. Park</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Botran%2C+M">M. Botran</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Gwak%2C+P">P. Gwak</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hino%2C+Y">Y. Hino</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+M">M. Jang</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+H">H. Jeon</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+S">S. Jeon</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jordan%2C+J+R">J. R. Jordan</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E. Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a> , et al. (36 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2006.00670v1-abstract-short" style="display: inline;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24 m short baseline at J-PARC. The JSNS$^{2}$ inner detector is filled with 17 tons of gadolinium(Gd)-loaded liquid scintillator (LS) with an additional 31 tons of unloaded LS in the intermediate $纬$-catcher and an optically separated outer veto volumes. A… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.00670v1-abstract-full').style.display = 'inline'; document.getElementById('2006.00670v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.00670v1-abstract-full" style="display: none;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24 m short baseline at J-PARC. The JSNS$^{2}$ inner detector is filled with 17 tons of gadolinium(Gd)-loaded liquid scintillator (LS) with an additional 31 tons of unloaded LS in the intermediate $纬$-catcher and an optically separated outer veto volumes. A total of 120 10-inch photomultiplier tubes observe the scintillating optical photons and each analog waveform is stored with the flash analog-to-digital converters. We present details of the data acquisition, processing, and data quality monitoring system. We also present two different trigger logics which are developed for the beam and self-trigger. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.00670v1-abstract-full').style.display = 'none'; document.getElementById('2006.00670v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 8 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.01599">arXiv:2005.01599</a> <span> [<a href="https://arxiv.org/pdf/2005.01599">pdf</a>, <a href="https://arxiv.org/format/2005.01599">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/15/07/T07003">10.1088/1748-0221/15/07/T07003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of PMTs for the JSNS2 experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Park%2C+J+S">J. S. Park</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Monjushiro%2C+S">S. Monjushiro</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Taira%2C+M">M. Taira</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+I+T">I. T. Lim</a>, <a href="/search/physics?searchtype=author&query=Moon%2C+D+H">D. H. Moon</a>, <a href="/search/physics?searchtype=author&query=Seo%2C+J+H">J. H. Seo</a>, <a href="/search/physics?searchtype=author&query=Shin%2C+C+D">C. D. Shin</a>, <a href="/search/physics?searchtype=author&query=Zohaib%2C+A">A. Zohaib</a>, <a href="/search/physics?searchtype=author&query=Gwak%2C+P">P. Gwak</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+M">M. Jang</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Nakano%2C+T">T. Nakano</a>, <a href="/search/physics?searchtype=author&query=Nomachi%2C+M">M. Nomachi</a>, <a href="/search/physics?searchtype=author&query=Shima%2C+T">T. Shima</a>, <a href="/search/physics?searchtype=author&query=Sugaya%2C+Y">Y. Sugaya</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Pac%2C+M+Y">M. Y. Pac</a> , et al. (36 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.01599v2-abstract-short" style="display: inline;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24\,m short baseline at J-PARC. The JSNS$^{2}$ inner detector is filled with 17 tons of gadolinium-loaded liquid scintillator (LS) and both the intermediate $纬$-catcher and the optically separated outer veto are filled with un-loaded LS. Optical photons fro… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.01599v2-abstract-full').style.display = 'inline'; document.getElementById('2005.01599v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.01599v2-abstract-full" style="display: none;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24\,m short baseline at J-PARC. The JSNS$^{2}$ inner detector is filled with 17 tons of gadolinium-loaded liquid scintillator (LS) and both the intermediate $纬$-catcher and the optically separated outer veto are filled with un-loaded LS. Optical photons from scintillation are observed by 120 Photomultiplier Tubes (PMTs). A total of 130 PMTs for the JSNS2 experiment were both donated by other experiments and purchased from Hamamatsu. Donated PMTs were purchased around 10 years ago, therefore JSNS$^{2}$ did pre-calibration of the PMTs including the purchased PMTs. 123 PMTs demonstrated acceptable performance for the JSNS$^{2}$ experiment, and 120 PMTs were installed in the detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.01599v2-abstract-full').style.display = 'none'; document.getElementById('2005.01599v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.01286">arXiv:2005.01286</a> <span> [<a href="https://arxiv.org/pdf/2005.01286">pdf</a>, <a href="https://arxiv.org/format/2005.01286">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Slow control and monitoring system at the JSNS$^{2}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Park%2C+J+S">J. S. Park</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Botran%2C+M">M. Botran</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+W">J. W. Choi</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Dodo%2C+T">T. Dodo</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Goh%2C+J">J. Goh</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hino%2C+Y">Y. Hino</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+M+C">M. C. Jang</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+H">H. Jeon</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+S">S. Jeon</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jordan%2C+J+R">J. R. Jordan</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D+E">D. E Jung</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a> , et al. (37 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.01286v4-abstract-short" style="display: inline;"> The JSNS$^2$ experiment is aimed to search for sterile neutrino oscillations using a neutrino beam from muon decays at rest. The JSNS$^2$ detector contains 17 tons of 0.1\% gadolinium (Gd) loaded liquid scintillator (LS) as a neutrino target. Detector construction was completed in the spring of 2020. A slow control and monitoring system (SCMS) was implemented for reliable control and quick monitor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.01286v4-abstract-full').style.display = 'inline'; document.getElementById('2005.01286v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.01286v4-abstract-full" style="display: none;"> The JSNS$^2$ experiment is aimed to search for sterile neutrino oscillations using a neutrino beam from muon decays at rest. The JSNS$^2$ detector contains 17 tons of 0.1\% gadolinium (Gd) loaded liquid scintillator (LS) as a neutrino target. Detector construction was completed in the spring of 2020. A slow control and monitoring system (SCMS) was implemented for reliable control and quick monitoring of the detector operational status and environmental conditions. It issues an alarm if any of the monitored parameters exceed a preset acceptable range. The SCMS monitors the high voltage (HV) of the photomultiplier tubes (PMTs), the LS level in the detector, possible LS overflow and leakage, the temperature and air pressure in the detector, the humidity of the experimental hall, and the LS flow rate during filling and extraction. An initial 10 days of data-taking with a neutrino beam was done following a successful commissioning of the detector and SCMS in June 2020. In this paper, we present a description of the assembly and installation of the SCMS and its performance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.01286v4-abstract-full').style.display = 'none'; document.getElementById('2005.01286v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 11 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1911.10379">arXiv:1911.10379</a> <span> [<a href="https://arxiv.org/pdf/1911.10379">pdf</a>, <a href="https://arxiv.org/format/1911.10379">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/15/04/P04026">10.1088/1748-0221/15/04/P04026 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Liquid Argon In A Testbeam (LArIAT) Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=LArIAT+Collaboration"> LArIAT Collaboration</a>, <a href="/search/physics?searchtype=author&query=Acciarri%2C+R">R. Acciarri</a>, <a href="/search/physics?searchtype=author&query=Adams%2C+C+J">C. J. Adams</a>, <a href="/search/physics?searchtype=author&query=Asaadi%2C+J">J. Asaadi</a>, <a href="/search/physics?searchtype=author&query=Backfish%2C+M">M. Backfish</a>, <a href="/search/physics?searchtype=author&query=Badgett%2C+W">W. Badgett</a>, <a href="/search/physics?searchtype=author&query=Baller%2C+B">B. Baller</a>, <a href="/search/physics?searchtype=author&query=Rodrigues%2C+O+B">O. Benevides Rodrigues</a>, <a href="/search/physics?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/physics?searchtype=author&query=Bouabid%2C+R">R. Bouabid</a>, <a href="/search/physics?searchtype=author&query=Bromberg%2C+C">C. Bromberg</a>, <a href="/search/physics?searchtype=author&query=Carey%2C+R">R. Carey</a>, <a href="/search/physics?searchtype=author&query=Fernandez%2C+R+C">R. Castillo Fernandez</a>, <a href="/search/physics?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/physics?searchtype=author&query=Aleman%2C+J+I+C">J. I. Cevallos Aleman</a>, <a href="/search/physics?searchtype=author&query=Chatterjee%2C+A">A. Chatterjee</a>, <a href="/search/physics?searchtype=author&query=Neto%2C+P+D">P. Dedin Neto</a>, <a href="/search/physics?searchtype=author&query=Santos%2C+M+V+D">M. V. Dos Santos</a>, <a href="/search/physics?searchtype=author&query=Dytman%2C+S">S. Dytman</a>, <a href="/search/physics?searchtype=author&query=Edmunds%2C+D">D. Edmunds</a>, <a href="/search/physics?searchtype=author&query=Elkins%2C+M">M. Elkins</a>, <a href="/search/physics?searchtype=author&query=Escobar%2C+C+O">C. O. Escobar</a>, <a href="/search/physics?searchtype=author&query=Esquivel%2C+J">J. Esquivel</a>, <a href="/search/physics?searchtype=author&query=Evans%2C+J">J. Evans</a>, <a href="/search/physics?searchtype=author&query=Falcone%2C+A">A. Falcone</a> , et al. (81 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1911.10379v2-abstract-short" style="display: inline;"> The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples of pions, muons, electrons, protons, and kaons in the momentum range 300-1400 MeV/c. This paper describes the main aspects of the detector and beamline, and also reports on calibrations performed for the detector and beamline components. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1911.10379v2-abstract-full" style="display: none;"> The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples of pions, muons, electrons, protons, and kaons in the momentum range 300-1400 MeV/c. This paper describes the main aspects of the detector and beamline, and also reports on calibrations performed for the detector and beamline components. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.10379v2-abstract-full').style.display = 'none'; document.getElementById('1911.10379v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-19-460-ND </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.07920">arXiv:1909.07920</a> <span> [<a href="https://arxiv.org/pdf/1909.07920">pdf</a>, <a href="https://arxiv.org/format/1909.07920">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.101.012010">10.1103/PhysRevD.101.012010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Calorimetry for low-energy electrons using charge and light in liquid argon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Foreman%2C+W">W. Foreman</a>, <a href="/search/physics?searchtype=author&query=Acciarri%2C+R">R. Acciarri</a>, <a href="/search/physics?searchtype=author&query=Asaadi%2C+J+A">J. A. Asaadi</a>, <a href="/search/physics?searchtype=author&query=Badgett%2C+W">W. Badgett</a>, <a href="/search/physics?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/physics?searchtype=author&query=Bouabid%2C+R">R. Bouabid</a>, <a href="/search/physics?searchtype=author&query=Bromberg%2C+C">C. Bromberg</a>, <a href="/search/physics?searchtype=author&query=Carey%2C+R">R. Carey</a>, <a href="/search/physics?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/physics?searchtype=author&query=Aleman%2C+J+I+C">J. I. Cevallos Aleman</a>, <a href="/search/physics?searchtype=author&query=Chatterjee%2C+A">A. Chatterjee</a>, <a href="/search/physics?searchtype=author&query=Evans%2C+J">J. Evans</a>, <a href="/search/physics?searchtype=author&query=Falcone%2C+A">A. Falcone</a>, <a href="/search/physics?searchtype=author&query=Flanagan%2C+W">W. Flanagan</a>, <a href="/search/physics?searchtype=author&query=Fleming%2C+B+T">B. T. Fleming</a>, <a href="/search/physics?searchtype=author&query=Garcia-Gomez%2C+D">D. Garcia-Gomez</a>, <a href="/search/physics?searchtype=author&query=Gelli%2C+B">B. Gelli</a>, <a href="/search/physics?searchtype=author&query=Ghosh%2C+T">T. Ghosh</a>, <a href="/search/physics?searchtype=author&query=Gomes%2C+R+A">R. A. Gomes</a>, <a href="/search/physics?searchtype=author&query=Gramellini%2C+E">E. Gramellini</a>, <a href="/search/physics?searchtype=author&query=Gran%2C+R">R. Gran</a>, <a href="/search/physics?searchtype=author&query=Hamilton%2C+P">P. Hamilton</a>, <a href="/search/physics?searchtype=author&query=Hill%2C+C">C. Hill</a>, <a href="/search/physics?searchtype=author&query=Ho%2C+J">J. Ho</a>, <a href="/search/physics?searchtype=author&query=Hugon%2C+J">J. Hugon</a> , et al. (38 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1909.07920v3-abstract-short" style="display: inline;"> Precise calorimetric reconstruction of 5-50 MeV electrons in liquid argon time projection chambers (LArTPCs) will enable the study of astrophysical neutrinos in DUNE and could enhance the physics reach of oscillation analyses. Liquid argon scintillation light has the potential to improve energy reconstruction for low-energy electrons over charge-based measurements alone. Here we demonstrate light-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.07920v3-abstract-full').style.display = 'inline'; document.getElementById('1909.07920v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.07920v3-abstract-full" style="display: none;"> Precise calorimetric reconstruction of 5-50 MeV electrons in liquid argon time projection chambers (LArTPCs) will enable the study of astrophysical neutrinos in DUNE and could enhance the physics reach of oscillation analyses. Liquid argon scintillation light has the potential to improve energy reconstruction for low-energy electrons over charge-based measurements alone. Here we demonstrate light-augmented calorimetry for low-energy electrons in a single-phase LArTPC using a sample of Michel electrons from decays of stopping cosmic muons in the LArIAT experiment at Fermilab. Michel electron energy spectra are reconstructed using both a traditional charge-based approach as well as a more holistic approach that incorporates both charge and light. A maximum-likelihood fitter, using LArIAT's well-tuned simulation, is developed for combining these quantities to achieve optimal energy resolution. A sample of isolated electrons is simulated to better determine the energy resolution expected for astrophysical electron-neutrino charged-current interaction final states. In LArIAT, which has very low wire noise and an average light yield of 18 pe/MeV, an energy resolution of $蟽/E \simeq 9.3\%/\sqrt{E} \oplus 1.3\%$ is achieved. Samples are then generated with varying wire noise levels and light yields to gauge the impact of light-augmented calorimetry in larger LArTPCs. At a charge-readout signal-to-noise of S/N $\simeq$ 30, for example, the energy resolution for electrons below 40 MeV is improved by $\approx$ 10%, $\approx$ 20%, and $\approx$ 40% over charge-only calorimetry for average light yields of 10 pe/MeV, 20 pe/MeV, and 100 pe/MeV, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.07920v3-abstract-full').style.display = 'none'; document.getElementById('1909.07920v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> PUB-19-391-ND </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 012010 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1908.11545">arXiv:1908.11545</a> <span> [<a href="https://arxiv.org/pdf/1908.11545">pdf</a>, <a href="https://arxiv.org/format/1908.11545">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> </div> <p class="title is-5 mathjax"> Photon vortex generation in quantum level by high-order harmonic synchrotron radiations from spiral moving electrons in magnetic fields </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Tomoyuki Maruyama</a>, <a href="/search/physics?searchtype=author&query=Hayakawa%2C+T">Takehito Hayakawa</a>, <a href="/search/physics?searchtype=author&query=Kajino%2C+T">Toshitaka Kajino</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M">Myung-Ki Cheoun</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1908.11545v3-abstract-short" style="display: inline;"> We explore photon vortex generation in synchrotron radiations from a spiral moving electron under a uniform magnetic field along z-axis using Landau quantization. The obtained wave-function of the photon vortecies is the eigen-state of the z-component of the total angular momentum (zTAM). In m-th harmonic radiations, individual photons are the eigen-state of zTAM of m. This is consistent with prev… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.11545v3-abstract-full').style.display = 'inline'; document.getElementById('1908.11545v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1908.11545v3-abstract-full" style="display: none;"> We explore photon vortex generation in synchrotron radiations from a spiral moving electron under a uniform magnetic field along z-axis using Landau quantization. The obtained wave-function of the photon vortecies is the eigen-state of the z-component of the total angular momentum (zTAM). In m-th harmonic radiations, individual photons are the eigen-state of zTAM of m. This is consistent with previous studies. Using the presently obtained wave-functions we calculate the decay widths and the energy spectra under extremely strong magnetic fields of 10^12 - 10^13 G, which are observed in astrophysical objects such as magnetized neutron stars and jets and accretion disks around black holes. The result suggests that photon vortices are predominantly generated in such objects. Although they have no coherency it is expected that photon vortices from the universe are measured using a detector based upon a quantum effect in future. This effect also affects to stellar nucleosynthesis in strong magnetic fields. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.11545v3-abstract-full').style.display = 'none'; document.getElementById('1908.11545v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1908.05141">arXiv:1908.05141</a> <span> [<a href="https://arxiv.org/pdf/1908.05141">pdf</a>, <a href="https://arxiv.org/format/1908.05141">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> J-PARC Neutrino Beamline Upgrade Technical Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/physics?searchtype=author&query=Ajmi%2C+A">A. Ajmi</a>, <a href="/search/physics?searchtype=author&query=Alt%2C+C">C. Alt</a>, <a href="/search/physics?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/physics?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Asada%2C+Y">Y. Asada</a>, <a href="/search/physics?searchtype=author&query=Ashida%2C+Y">Y. Ashida</a>, <a href="/search/physics?searchtype=author&query=Atherton%2C+A">A. Atherton</a>, <a href="/search/physics?searchtype=author&query=Atkin%2C+E">E. Atkin</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/physics?searchtype=author&query=Barbato%2C+F+C+T">F. C. T. Barbato</a>, <a href="/search/physics?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/physics?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/physics?searchtype=author&query=Beloshapkin%2C+A">A. Beloshapkin</a>, <a href="/search/physics?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/physics?searchtype=author&query=Berns%2C+L">L. Berns</a>, <a href="/search/physics?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/physics?searchtype=author&query=Bian%2C+J">J. Bian</a>, <a href="/search/physics?searchtype=author&query=Bienstock%2C+S">S. Bienstock</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a> , et al. (360 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1908.05141v1-abstract-short" style="display: inline;"> In this document, technical details of the upgrade plan of the J-PARC neutrino beamline for the extension of the T2K experiment are described. T2K has proposed to accumulate data corresponding to $2\times{}10^{22}$ protons-on-target in the next decade, aiming at an initial observation of CP violation with $3蟽$ or higher significance in the case of maximal CP violation. Methods to increase the neut… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.05141v1-abstract-full').style.display = 'inline'; document.getElementById('1908.05141v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1908.05141v1-abstract-full" style="display: none;"> In this document, technical details of the upgrade plan of the J-PARC neutrino beamline for the extension of the T2K experiment are described. T2K has proposed to accumulate data corresponding to $2\times{}10^{22}$ protons-on-target in the next decade, aiming at an initial observation of CP violation with $3蟽$ or higher significance in the case of maximal CP violation. Methods to increase the neutrino beam intensity, which are necessary to achieve the proposed data increase, are described. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.05141v1-abstract-full').style.display = 'none'; document.getElementById('1908.05141v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1906.00213">arXiv:1906.00213</a> <span> [<a href="https://arxiv.org/pdf/1906.00213">pdf</a>, <a href="https://arxiv.org/format/1906.00213">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/14/09/T09010">10.1088/1748-0221/14/09/T09010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production and optical properties of liquid scintillator for the JSNS$^{2}$ experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Park%2C+J+S">J. S. Park</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+Y">S. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Rott%2C+C">C. Rott</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+D+H">D. H. Lee</a>, <a href="/search/physics?searchtype=author&query=Jung%2C+D">D. Jung</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+H+K">H. K. Jeon</a>, <a href="/search/physics?searchtype=author&query=Yu%2C+I">I. Yu</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Ju%2C+K+W">K. W. Ju</a>, <a href="/search/physics?searchtype=author&query=Pac%2C+M">M. Pac</a>, <a href="/search/physics?searchtype=author&query=Gwak%2C+P+J">P. J. Gwak</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B. Kim</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Jeon%2C+S+H">S. H. Jeon</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Ujiie%2C+R">R. Ujiie</a>, <a href="/search/physics?searchtype=author&query=Hino%2C+Y">Y. Hino</a>, <a href="/search/physics?searchtype=author&query=Park%2C+Y+S">Y. S. Park</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1906.00213v2-abstract-short" style="display: inline;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment will search for neutrino oscillations over a 24 m short baseline at J-PARC. The JSNS$^{2}$ inner detector will be filled with 17 tons of gadolinium-loaded liquid scintillator (LS) with an additional 31 tons of unloaded LS in the intermediate $纬$-catcher and outer veto volumes. JSNS$^{2}$ has chosen Linea… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.00213v2-abstract-full').style.display = 'inline'; document.getElementById('1906.00213v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1906.00213v2-abstract-full" style="display: none;"> The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment will search for neutrino oscillations over a 24 m short baseline at J-PARC. The JSNS$^{2}$ inner detector will be filled with 17 tons of gadolinium-loaded liquid scintillator (LS) with an additional 31 tons of unloaded LS in the intermediate $纬$-catcher and outer veto volumes. JSNS$^{2}$ has chosen Linear Alkyl Benzene (LAB) as an organic solvent because of its chemical properties. The unloaded LS was produced at a refurbished facility, originally used for scintillator production by the RENO experiment. JSNS$^{2}$ plans to use ISO tanks for the storage and transportation of the LS. In this paper, we describe the LS production, and present measurements of its optical properties and long term stability. Our measurements show that storing the LS in ISO tanks does not result in degradation of its optical properties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.00213v2-abstract-full').style.display = 'none'; document.getElementById('1906.00213v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 4 figures,</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1904.09611">arXiv:1904.09611</a> <span> [<a href="https://arxiv.org/pdf/1904.09611">pdf</a>, <a href="https://arxiv.org/format/1904.09611">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptz070">10.1093/ptep/ptz070 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $谓_渭$ charged-current cross sections on water, hydrocarbon, iron, and their ratios with the T2K on-axis detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Akutsu%2C+R">R. Akutsu</a>, <a href="/search/physics?searchtype=author&query=Ali%2C+A">A. Ali</a>, <a href="/search/physics?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/physics?searchtype=author&query=Anthony%2C+L">L. Anthony</a>, <a href="/search/physics?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/physics?searchtype=author&query=Ashida%2C+Y">Y. Ashida</a>, <a href="/search/physics?searchtype=author&query=Awataguchi%2C+Y">Y. Awataguchi</a>, <a href="/search/physics?searchtype=author&query=Azuma%2C+Y">Y. Azuma</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/physics?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/physics?searchtype=author&query=Barry%2C+C">C. Barry</a>, <a href="/search/physics?searchtype=author&query=Batkiewicz-Kwasniak%2C+M">M. Batkiewicz-Kwasniak</a>, <a href="/search/physics?searchtype=author&query=Bench%2C+F">F. Bench</a>, <a href="/search/physics?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/physics?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/physics?searchtype=author&query=Berner%2C+R+M">R. M. Berner</a>, <a href="/search/physics?searchtype=author&query=Berns%2C+L">L. Berns</a>, <a href="/search/physics?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/physics?searchtype=author&query=Bienstock%2C+S">S. Bienstock</a>, <a href="/search/physics?searchtype=author&query=Blondely%2C+A">A. Blondely</a> , et al. (292 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1904.09611v1-abstract-short" style="display: inline;"> We report a measurement of the flux-integrated $谓_渭$ charged-current cross sections on water, hydrocarbon, and iron in the T2K on-axis neutrino beam with a mean neutrino energy of 1.5 GeV. The measured cross sections on water, hydrocarbon, and iron are $蟽^{\rm{H_{2}O}}_{\rm{CC}}$ = (0.840$\pm 0.010$(stat.)$^{+0.10}_{-0.08}$(syst.))$\times$10$^{-38}$cm$^2$/nucleon, $蟽^{\rm{CH}}_{\rm{CC}}$ = (0.817… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.09611v1-abstract-full').style.display = 'inline'; document.getElementById('1904.09611v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1904.09611v1-abstract-full" style="display: none;"> We report a measurement of the flux-integrated $谓_渭$ charged-current cross sections on water, hydrocarbon, and iron in the T2K on-axis neutrino beam with a mean neutrino energy of 1.5 GeV. The measured cross sections on water, hydrocarbon, and iron are $蟽^{\rm{H_{2}O}}_{\rm{CC}}$ = (0.840$\pm 0.010$(stat.)$^{+0.10}_{-0.08}$(syst.))$\times$10$^{-38}$cm$^2$/nucleon, $蟽^{\rm{CH}}_{\rm{CC}}$ = (0.817$\pm 0.007$(stat.)$^{+0.11}_{-0.08}$(syst.))$\times$10$^{-38}$cm$^2$/nucleon, and $蟽^{\rm{Fe}}_{\rm{CC}}$ = (0.859$\pm 0.003$(stat.) $^{+0.12}_{-0.10}$(syst.))$\times$10$^{-38}$cm$^2$/nucleon respectively, for a restricted phase space of induced muons: $胃_渭<45^{\circ}$ and $p_渭>$0.4 GeV/$c$ in the laboratory frame. The measured cross section ratios are ${蟽^{\rm{H_{2}O}}_{\rm{CC}}}/{蟽^{\rm{CH}}_{\rm{CC}}}$ = 1.028$\pm 0.016$(stat.)$\pm 0.053$(syst.), ${蟽^{\rm{Fe}}_{\rm{CC}}}/{蟽^{\rm{H_{2}O}}_{\rm{CC}}}$ = 1.023$\pm 0.012$(stat.)$\pm 0.058$(syst.), and ${蟽^{\rm{Fe}}_{\rm{CC}}}/{蟽^{\rm{CH}}_{\rm{CC}}}$ = 1.049$\pm 0.010$(stat.)$\pm 0.043$(syst.). These results, with an unprecedented precision for the measurements of neutrino cross sections on water in the studied energy region, show good agreement with the current neutrino interaction models used in the T2K oscillation analyses. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.09611v1-abstract-full').style.display = 'none'; document.getElementById('1904.09611v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog Theor Exp Phys (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1904.08674">arXiv:1904.08674</a> <span> [<a href="https://arxiv.org/pdf/1904.08674">pdf</a>, <a href="https://arxiv.org/format/1904.08674">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/14/09/T09001">10.1088/1748-0221/14/09/T09001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Stainless steel tank production and tests for the JSNS$^2$ neutrino detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hino%2C+Y">Y. Hino</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Park%2C+J+S">J. S. Park</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a>, <a href="/search/physics?searchtype=author&query=Sugaya%2C+Y">Y. Sugaya</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1904.08674v2-abstract-short" style="display: inline;"> This paper describes the design and the construction of the stainless steel tank of the JSNS$^2$ detector. The leakage was examined using water and gas after the construction. The new sealing technique with liquid gasket was developed, and its sealing capability was evaluated quantitatively. The result shows over 5 times better value than the tolerance level of leakage.The acceleration measurement… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.08674v2-abstract-full').style.display = 'inline'; document.getElementById('1904.08674v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1904.08674v2-abstract-full" style="display: none;"> This paper describes the design and the construction of the stainless steel tank of the JSNS$^2$ detector. The leakage was examined using water and gas after the construction. The new sealing technique with liquid gasket was developed, and its sealing capability was evaluated quantitatively. The result shows over 5 times better value than the tolerance level of leakage.The acceleration measurement during the transportation of the tank shows adequate robustness.These tests prove that the stainless steel tank is feasible to use the real experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.08674v2-abstract-full').style.display = 'none'; document.getElementById('1904.08674v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 15 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.03750">arXiv:1901.03750</a> <span> [<a href="https://arxiv.org/pdf/1901.03750">pdf</a>, <a href="https://arxiv.org/format/1901.03750">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> T2K ND280 Upgrade -- Technical Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/physics?searchtype=author&query=Ajmi%2C+A">A. Ajmi</a>, <a href="/search/physics?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/physics?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Asada%2C+Y">Y. Asada</a>, <a href="/search/physics?searchtype=author&query=Ashida%2C+Y">Y. Ashida</a>, <a href="/search/physics?searchtype=author&query=Atherton%2C+A">A. Atherton</a>, <a href="/search/physics?searchtype=author&query=Atkin%2C+E">E. Atkin</a>, <a href="/search/physics?searchtype=author&query=Atti%C3%A9%2C+D">D. Atti茅</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/physics?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/physics?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/physics?searchtype=author&query=Beloshapkin%2C+A">A. Beloshapkin</a>, <a href="/search/physics?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/physics?searchtype=author&query=Berns%2C+L">L. Berns</a>, <a href="/search/physics?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/physics?searchtype=author&query=Bian%2C+J">J. Bian</a>, <a href="/search/physics?searchtype=author&query=Bienstock%2C+S">S. Bienstock</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Boix%2C+J">J. Boix</a>, <a href="/search/physics?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a> , et al. (359 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1901.03750v2-abstract-short" style="display: inline;"> In this document, we present the Technical Design Report of the Upgrade of the T2K Near Detector ND280. The goal of this upgrade is to improve the Near Detector performance to measure the neutrino interaction rate and to constrain the neutrino interaction cross-sections so that the uncertainty in the number of predicted events at Super-Kamiokande is reduced to about 4%. This will allow to improve… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.03750v2-abstract-full').style.display = 'inline'; document.getElementById('1901.03750v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.03750v2-abstract-full" style="display: none;"> In this document, we present the Technical Design Report of the Upgrade of the T2K Near Detector ND280. The goal of this upgrade is to improve the Near Detector performance to measure the neutrino interaction rate and to constrain the neutrino interaction cross-sections so that the uncertainty in the number of predicted events at Super-Kamiokande is reduced to about 4%. This will allow to improve the physics reach of the T2K-II project. This goal is achieved by modifying the upstream part of the detector, adding a new highly granular scintillator detector (Super-FGD), two new TPCs (High-Angle TPC) and six TOF planes. Details about the detector concepts, design and construction methods are presented, as well as a first look at the test-beam data taken in Summer 2018. An update of the physics studies is also presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.03750v2-abstract-full').style.display = 'none'; document.getElementById('1901.03750v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">196 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-SPSC-2019-001 (SPSC-TDR-006) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.05219">arXiv:1808.05219</a> <span> [<a href="https://arxiv.org/pdf/1808.05219">pdf</a>, <a href="https://arxiv.org/format/1808.05219">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Light Dark Matter eXperiment (LDMX) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=%C3%85kesson%2C+T">Torsten 脜kesson</a>, <a href="/search/physics?searchtype=author&query=Berlin%2C+A">Asher Berlin</a>, <a href="/search/physics?searchtype=author&query=Blinov%2C+N">Nikita Blinov</a>, <a href="/search/physics?searchtype=author&query=Colegrove%2C+O">Owen Colegrove</a>, <a href="/search/physics?searchtype=author&query=Collura%2C+G">Giulia Collura</a>, <a href="/search/physics?searchtype=author&query=Dutta%2C+V">Valentina Dutta</a>, <a href="/search/physics?searchtype=author&query=Echenard%2C+B">Bertrand Echenard</a>, <a href="/search/physics?searchtype=author&query=Hiltbrand%2C+J">Joshua Hiltbrand</a>, <a href="/search/physics?searchtype=author&query=Hitlin%2C+D+G">David G. Hitlin</a>, <a href="/search/physics?searchtype=author&query=Incandela%2C+J">Joseph Incandela</a>, <a href="/search/physics?searchtype=author&query=Jaros%2C+J">John Jaros</a>, <a href="/search/physics?searchtype=author&query=Johnson%2C+R">Robert Johnson</a>, <a href="/search/physics?searchtype=author&query=Krnjaic%2C+G">Gordan Krnjaic</a>, <a href="/search/physics?searchtype=author&query=Mans%2C+J">Jeremiah Mans</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Takashi Maruyama</a>, <a href="/search/physics?searchtype=author&query=McCormick%2C+J">Jeremy McCormick</a>, <a href="/search/physics?searchtype=author&query=Moreno%2C+O">Omar Moreno</a>, <a href="/search/physics?searchtype=author&query=Nelson%2C+T">Timothy Nelson</a>, <a href="/search/physics?searchtype=author&query=Niendorf%2C+G">Gavin Niendorf</a>, <a href="/search/physics?searchtype=author&query=Petersen%2C+R">Reese Petersen</a>, <a href="/search/physics?searchtype=author&query=P%C3%B6ttgen%2C+R">Ruth P枚ttgen</a>, <a href="/search/physics?searchtype=author&query=Schuster%2C+P">Philip Schuster</a>, <a href="/search/physics?searchtype=author&query=Toro%2C+N">Natalia Toro</a>, <a href="/search/physics?searchtype=author&query=Tran%2C+N">Nhan Tran</a>, <a href="/search/physics?searchtype=author&query=Whitbeck%2C+A">Andrew Whitbeck</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1808.05219v1-abstract-short" style="display: inline;"> We present an initial design study for LDMX, the Light Dark Matter Experiment, a small-scale accelerator experiment having broad sensitivity to both direct dark matter and mediator particle production in the sub-GeV mass region. LDMX employs missing momentum and energy techniques in multi-GeV electro-nuclear fixed-target collisions to explore couplings to electrons in uncharted regions that extend… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.05219v1-abstract-full').style.display = 'inline'; document.getElementById('1808.05219v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.05219v1-abstract-full" style="display: none;"> We present an initial design study for LDMX, the Light Dark Matter Experiment, a small-scale accelerator experiment having broad sensitivity to both direct dark matter and mediator particle production in the sub-GeV mass region. LDMX employs missing momentum and energy techniques in multi-GeV electro-nuclear fixed-target collisions to explore couplings to electrons in uncharted regions that extend down to and below levels that are motivated by direct thermal freeze-out mechanisms. LDMX would also be sensitive to a wide range of visibly and invisibly decaying dark sector particles, thereby addressing many of the science drivers highlighted in the 2017 US Cosmic Visions New Ideas in Dark Matter Community Report. LDMX would achieve the required sensitivity by leveraging existing and developing detector technologies from the CMS, HPS and Mu2e experiments. In this paper, we present our initial design concept, detailed GEANT-based studies of detector performance, signal and background processes, and a preliminary analysis approach. We demonstrate how a first phase of LDMX could expand sensitivity to a variety of light dark matter, mediator, and millicharge particles by several orders of magnitude in coupling over the broad sub-GeV mass range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.05219v1-abstract-full').style.display = 'none'; document.getElementById('1808.05219v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-18-324-A, SLAC-PUB-17303 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.02154">arXiv:1808.02154</a> <span> [<a href="https://arxiv.org/pdf/1808.02154">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Detector Backgrounds at the Higgs Factory Muon Collider: MARS vs FLUKA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Mokhov%2C+N+V">N. V. Mokhov</a>, <a href="/search/physics?searchtype=author&query=Striganov%2C+S+I">S. I. Striganov</a>, <a href="/search/physics?searchtype=author&query=Tropin%2C+I+S">I. S. Tropin</a>, <a href="/search/physics?searchtype=author&query=Markiewicz%2C+T+W">T. W. Markiewicz</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1808.02154v2-abstract-short" style="display: inline;"> Simulations for the 125-GeV Higgs Factory (HF) Muon Collider (MC) have shown large background particle loads on the collider detector. To verify level, source and composition of background calculations were performed using FLUKA and MARS codes for two shielding configurations. After comprehensive tuning of muon beam parameters, geometry setups and scoring procedures, background particle distributi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.02154v2-abstract-full').style.display = 'inline'; document.getElementById('1808.02154v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.02154v2-abstract-full" style="display: none;"> Simulations for the 125-GeV Higgs Factory (HF) Muon Collider (MC) have shown large background particle loads on the collider detector. To verify level, source and composition of background calculations were performed using FLUKA and MARS codes for two shielding configurations. After comprehensive tuning of muon beam parameters, geometry setups and scoring procedures, background particle distributions at the detector entrance were simulated and compared. The spatial distributions and energy spectra of background particles obtained by two codes are rather similar. Average numbers of background particles simulated using MARS and FLUKA agree within a factor of two. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.02154v2-abstract-full').style.display = 'none'; document.getElementById('1808.02154v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1806.01271">arXiv:1806.01271</a> <span> [<a href="https://arxiv.org/pdf/1806.01271">pdf</a>, <a href="https://arxiv.org/ps/1806.01271">ps</a>, <a href="https://arxiv.org/format/1806.01271">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Compton Scattering of Hermite Gaussian Wave Gamma-Ray </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Tomoyuki Maruyama</a>, <a href="/search/physics?searchtype=author&query=Kajino%2C+T+H+T">Takehito Hayakawa. Toshitaka Kajino</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1806.01271v1-abstract-short" style="display: inline;"> We calculate the differential cross sections for Compton scattering of photons described by Hermite Gaussian (HG) wave function in the framework of relativistic quantum mechanics. The HG wave gamma-rays propagating along the z-direction have quantum numbers of nodes of nx and ny in the x- and y-directions, respectively. The calculated differential cross section is symmetric with respect to both th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.01271v1-abstract-full').style.display = 'inline'; document.getElementById('1806.01271v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1806.01271v1-abstract-full" style="display: none;"> We calculate the differential cross sections for Compton scattering of photons described by Hermite Gaussian (HG) wave function in the framework of relativistic quantum mechanics. The HG wave gamma-rays propagating along the z-direction have quantum numbers of nodes of nx and ny in the x- and y-directions, respectively. The calculated differential cross section is symmetric with respect to both the zx- and zy-planes. The nodes whose number is identical with nx and ny appear in the energy spectrum measured in zx- and zy-planes, respectively. These results indicate that it is possible to identify the HG wave photon and its quantum numbers nx and ny by measuring Compton scattering. The present proposed method can be also applied to gamma-ray astronomy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.01271v1-abstract-full').style.display = 'none'; document.getElementById('1806.01271v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.09369">arXiv:1710.09369</a> <span> [<a href="https://arxiv.org/pdf/1710.09369">pdf</a>, <a href="https://arxiv.org/ps/1710.09369">ps</a>, <a href="https://arxiv.org/format/1710.09369">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Compton Scattering of Gamma-Ray Vortex with Laguerre Gaussian Wave Function </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Tomoyuki Maruyama</a>, <a href="/search/physics?searchtype=author&query=Hayakawa%2C+T">Takehito Hayakawa</a>, <a href="/search/physics?searchtype=author&query=Kajino%2C+T">Toshitaka Kajino</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.09369v1-abstract-short" style="display: inline;"> In this work, we report calculation for Compton scattering of a gamma-ray vortex with Laguerre Gaussian wave function on an electron in the framework of the relativistic quantum mechanics. We have found the following unexpected feature. The momentum of scattered photon distributes outside of the reaction plane determined by the incident photon and the scattered electron, and hence the energy of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.09369v1-abstract-full').style.display = 'inline'; document.getElementById('1710.09369v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.09369v1-abstract-full" style="display: none;"> In this work, we report calculation for Compton scattering of a gamma-ray vortex with Laguerre Gaussian wave function on an electron in the framework of the relativistic quantum mechanics. We have found the following unexpected feature. The momentum of scattered photon distributes outside of the reaction plane determined by the incident photon and the scattered electron, and hence the energy of the scattered photon also distributes. This novel result indicates that one can identify a gamma-ray vortex by measuring coincidentally the scattered angles of the electron and photon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.09369v1-abstract-full').style.display = 'none'; document.getElementById('1710.09369v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.08629">arXiv:1705.08629</a> <span> [<a href="https://arxiv.org/pdf/1705.08629">pdf</a>, <a href="https://arxiv.org/format/1705.08629">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Technical Design Report (TDR): Searching for a Sterile Neutrino at J-PARC MLF (E56, JSNS2) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Cheoun%2C+M+K">M. K. Cheoun</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J+H">J. H. Choi</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hino%2C+Y">Y. Hino</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Iwai%2C+E">E. Iwai</a>, <a href="/search/physics?searchtype=author&query=Iwata%2C+S">S. Iwata</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+J+S">J. S. Jang</a>, <a href="/search/physics?searchtype=author&query=Jang%2C+H+I">H. I. Jang</a>, <a href="/search/physics?searchtype=author&query=Joo%2C+K+K">K. K. Joo</a>, <a href="/search/physics?searchtype=author&query=Jordan%2C+J">J. Jordan</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+S+K">S. K. Kang</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+E+J">E. J. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+Y">J. Y. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+S+B">S. B. Kim</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/physics?searchtype=author&query=Kuwata%2C+K">K. Kuwata</a>, <a href="/search/physics?searchtype=author&query=Kwon%2C+E">E. Kwon</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+I+T">I. T. Lim</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a> , et al. (28 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1705.08629v1-abstract-short" style="display: inline;"> In this document, the technical details of the JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment are described. The search for sterile neutrinos is currently one of the hottest topics in neutrino physics. The JSNS$^2$ experiment aims to search for the existence of neutrino oscillations with $螖m^2$ near 1 eV$^2$ at the J-PARC Materials and Life Science Exper… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.08629v1-abstract-full').style.display = 'inline'; document.getElementById('1705.08629v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.08629v1-abstract-full" style="display: none;"> In this document, the technical details of the JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment are described. The search for sterile neutrinos is currently one of the hottest topics in neutrino physics. The JSNS$^2$ experiment aims to search for the existence of neutrino oscillations with $螖m^2$ near 1 eV$^2$ at the J-PARC Materials and Life Science Experimental Facility (MLF). A 1 MW beam of 3 GeV protons incident on a spallation neutron target produces an intense neutrino beam from muon decay at rest. Neutrinos come predominantly from $渭^+$ decay: $渭^{+} \to e^{+} + \bar谓_渭 + 谓_{e}$. The experiment will search for $\bar谓_渭$ to $\bar谓_{e}$ oscillations which are detected by the inverse beta decay interaction $\bar谓_{e} + p \to e^{+} + n$, followed by gammas from neutron capture on Gd. The detector has a fiducial volume of 17 tons and is located 24 meters away from the mercury target. JSNS$^2$ offers the ultimate direct test of the LSND anomaly. In addition to the sterile neutrino search, the physics program includes cross section measurements with neutrinos with a few 10's of MeV from muon decay at rest and with monochromatic 236 MeV neutrinos from kaon decay at rest. These cross sections are relevant for our understanding of supernova explosions and nuclear physics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.08629v1-abstract-full').style.display = 'none'; document.getElementById('1705.08629v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1612.07821">arXiv:1612.07821</a> <span> [<a href="https://arxiv.org/pdf/1612.07821">pdf</a>, <a href="https://arxiv.org/format/1612.07821">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2017.03.061">10.1016/j.nima.2017.03.061 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Heavy Photon Search beamline and its performance </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baltzell%2C+N">N. Baltzell</a>, <a href="/search/physics?searchtype=author&query=Egiyan%2C+H">H. Egiyan</a>, <a href="/search/physics?searchtype=author&query=Ehrhart%2C+M">M. Ehrhart</a>, <a href="/search/physics?searchtype=author&query=Field%2C+C">C. Field</a>, <a href="/search/physics?searchtype=author&query=Freyberger%2C+A">A. Freyberger</a>, <a href="/search/physics?searchtype=author&query=Girod%2C+F+-">F. -X. Girod</a>, <a href="/search/physics?searchtype=author&query=Holtrop%2C+M">M. Holtrop</a>, <a href="/search/physics?searchtype=author&query=Jaros%2C+J">J. Jaros</a>, <a href="/search/physics?searchtype=author&query=Kalicy%2C+G">G. Kalicy</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=McKinnon%2C+B">B. McKinnon</a>, <a href="/search/physics?searchtype=author&query=Moffeit%2C+K">K. Moffeit</a>, <a href="/search/physics?searchtype=author&query=Nelson%2C+T">T. Nelson</a>, <a href="/search/physics?searchtype=author&query=Odian%2C+A">A. Odian</a>, <a href="/search/physics?searchtype=author&query=Oriunno%2C+M">M. Oriunno</a>, <a href="/search/physics?searchtype=author&query=Paremuzyan%2C+R">R. Paremuzyan</a>, <a href="/search/physics?searchtype=author&query=Stepanyan%2C+S">S. Stepanyan</a>, <a href="/search/physics?searchtype=author&query=Tiefenback%2C+M">M. Tiefenback</a>, <a href="/search/physics?searchtype=author&query=Uemura%2C+S">S. Uemura</a>, <a href="/search/physics?searchtype=author&query=Ungaro%2C+M">M. Ungaro</a>, <a href="/search/physics?searchtype=author&query=Vance%2C+H">H. Vance</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1612.07821v1-abstract-short" style="display: inline;"> The Heavy Photon Search (HPS) is an experiment to search for a hidden sector photon, aka a heavy photon or dark photon, in fixed target electroproduction at the Thomas Jefferson National Accelerator Facility (JLab). The HPS experiment searches for the e$^+$e$^-$ decay of the heavy photon with bump hunt and detached vertex strategies using a compact, large acceptance forward spectrometer, consistin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.07821v1-abstract-full').style.display = 'inline'; document.getElementById('1612.07821v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1612.07821v1-abstract-full" style="display: none;"> The Heavy Photon Search (HPS) is an experiment to search for a hidden sector photon, aka a heavy photon or dark photon, in fixed target electroproduction at the Thomas Jefferson National Accelerator Facility (JLab). The HPS experiment searches for the e$^+$e$^-$ decay of the heavy photon with bump hunt and detached vertex strategies using a compact, large acceptance forward spectrometer, consisting of a silicon microstrip detector (SVT) for tracking and vertexing, and a PbWO$_4$ electromagnetic calorimeter for energy measurement and fast triggering. To achieve large acceptance and good vertexing resolution, the first layer of silicon detectors is placed just 10 cm downstream of the target with the sensor edges only 500 $渭$m above and below the beam. Placing the SVT in such close proximity to the beam puts stringent requirements on the beam profile and beam position stability. As part of an approved engineering run, HPS took data in 2015 and 2016 at 1.05 GeV and 2.3 GeV beam energies, respectively. This paper describes the beam line and its performance during that data taking. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.07821v1-abstract-full').style.display = 'none'; document.getElementById('1612.07821v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 December, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2016. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.08186">arXiv:1610.08186</a> <span> [<a href="https://arxiv.org/pdf/1610.08186">pdf</a>, <a href="https://arxiv.org/format/1610.08186">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Status Report (22th J-PARC PAC): Searching for a Sterile Neutrino at J-PARC MLF (E56, JSNS2) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Meigo%2C+S">S. Meigo</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+K">K. Sakai</a>, <a href="/search/physics?searchtype=author&query=Sakamoto%2C+S">S. Sakamoto</a>, <a href="/search/physics?searchtype=author&query=Suzuya%2C+K">K. Suzuya</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Monjushiro%2C+S">S. Monjushiro</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Taira%2C+M">M. Taira</a>, <a href="/search/physics?searchtype=author&query=Iwata%2C+S">S. Iwata</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+T">T. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Niiyama%2C+M">M. Niiyama</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Nakano%2C+T">T. Nakano</a>, <a href="/search/physics?searchtype=author&query=Nomachi%2C+M">M. Nomachi</a>, <a href="/search/physics?searchtype=author&query=Shima%2C+T">T. Shima</a>, <a href="/search/physics?searchtype=author&query=Sugaya%2C+Y">Y. Sugaya</a>, <a href="/search/physics?searchtype=author&query=Bezerra%2C+T+J+C">T. J. C. Bezerra</a>, <a href="/search/physics?searchtype=author&query=Chauveau%2C+E">E. Chauveau</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Hino%2C+Y">Y. Hino</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a> , et al. (12 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1610.08186v1-abstract-short" style="display: inline;"> The JSNS$^2$ (J-PARC E56) experiment aims to search for a sterile neutrino at the J-PARC Materials and Life Sciences Experimental Facility (MLF). After the submission of a proposal to the J-PARC PAC, Stage-1 approval was granted to the JSNS$^2$ experiment on April 2015.This approval followed a series of background measurements which were performed in 2014. Recently, funding (the grant-in-aid for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.08186v1-abstract-full').style.display = 'inline'; document.getElementById('1610.08186v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.08186v1-abstract-full" style="display: none;"> The JSNS$^2$ (J-PARC E56) experiment aims to search for a sterile neutrino at the J-PARC Materials and Life Sciences Experimental Facility (MLF). After the submission of a proposal to the J-PARC PAC, Stage-1 approval was granted to the JSNS$^2$ experiment on April 2015.This approval followed a series of background measurements which were performed in 2014. Recently, funding (the grant-in-aid for scientific research (S)) in Japan for building one 25~ton fiducial volume detector module was approved for the experiment. Therefore, we aim to start the experiment with one detector in JFY2018-2019. We are now working to produce precise cost estimates and schedule for construction, noting that most of the detector components can be produced within one year from the date of order. This will be reported at the next PAC meeting. In parallel to the detector construction schedule, JSNS$^2$ will submit a Technical Design report (TDR) to obtain the Stage-2 approval from the J-PARC PAC.The recent progress of the R$\&$D efforts towards this TDR are shown in this report. In particular, the R$\&$D status of the liquid scintillator, cosmic ray veto system, and software are shown. We have performed a test-experiment using 1.6~L of liquid scintillator at the 3rd floor of the MLF building in order to determine the identities of non-neutrino background particles coming to this detector location during the proton bunch. This is the so-called "MLF 2015AU0001" experiment. We briefly show preliminary results from this test-experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.08186v1-abstract-full').style.display = 'none'; document.getElementById('1610.08186v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2016. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1609.04111">arXiv:1609.04111</a> <span> [<a href="https://arxiv.org/pdf/1609.04111">pdf</a>, <a href="https://arxiv.org/format/1609.04111">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Proposal for an Extended Run of T2K to $20\times10^{21}$ POT </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/physics?searchtype=author&query=Amji%2C+A">A. Amji</a>, <a href="/search/physics?searchtype=author&query=Amey%2C+J">J. Amey</a>, <a href="/search/physics?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/physics?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Atherton%2C+A">A. Atherton</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/physics?searchtype=author&query=Barbato%2C+F+C+T">F. C. T. Barbato</a>, <a href="/search/physics?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/physics?searchtype=author&query=Barbato%2C+F+C+T">F. C. T. Barbato</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/physics?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/physics?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/physics?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/physics?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/physics?searchtype=author&query=Bienstock%2C+S">S. Bienstock</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/physics?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/physics?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/physics?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a>, <a href="/search/physics?searchtype=author&query=Bravar%2C+A">A. Bravar</a> , et al. (292 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1609.04111v1-abstract-short" style="display: inline;"> Recent measurements by the T2K neutrino oscillation experiment indicate that CP violation in neutrino mixing may be observed in the future by long-baseline neutrino oscillation experiments. We propose an extension to the currently approved T2K running from $7.8\times 10^{21}~\mbox{POT}$ to $20\times 10^{21}~\mbox{POT}$, aiming at initial observation of CP violation with 3$\,蟽$ or higher significan… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1609.04111v1-abstract-full').style.display = 'inline'; document.getElementById('1609.04111v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1609.04111v1-abstract-full" style="display: none;"> Recent measurements by the T2K neutrino oscillation experiment indicate that CP violation in neutrino mixing may be observed in the future by long-baseline neutrino oscillation experiments. We propose an extension to the currently approved T2K running from $7.8\times 10^{21}~\mbox{POT}$ to $20\times 10^{21}~\mbox{POT}$, aiming at initial observation of CP violation with 3$\,蟽$ or higher significance for the case of maximum CP violation. The program also contains a measurement of mixing parameters, $胃_{23}$ and $螖m^2_{32}$, with a precision of 1.7$^\circ$ or better and 1%, respectively. With accelerator and beamline upgrades, as well as analysis improvements, this program would occur before the next generation of long-baseline neutrino oscillation experiments that are expected to start operation in 2026. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1609.04111v1-abstract-full').style.display = 'none'; document.getElementById('1609.04111v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 September, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">68 pages, 31 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1601.01046">arXiv:1601.01046</a> <span> [<a href="https://arxiv.org/pdf/1601.01046">pdf</a>, <a href="https://arxiv.org/format/1601.01046">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Status Report for the 21th J-PARC PAC : Searching for a Sterile Neutrino at J-PARC MLF (J-PARC E56, JSNS2) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Meigo%2C+S">S. Meigo</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+K">K. Sakai</a>, <a href="/search/physics?searchtype=author&query=Sakamoto%2C+S">S. Sakamoto</a>, <a href="/search/physics?searchtype=author&query=Suzuya%2C+K">K. Suzuya</a>, <a href="/search/physics?searchtype=author&query=Iwai%2C+E">E. Iwai</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Monjushiro%2C+S">S. Monjushiro</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Taira%2C+M">M. Taira</a>, <a href="/search/physics?searchtype=author&query=Niiyama%2C+M">M. Niiyama</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Nakano%2C+T">T. Nakano</a>, <a href="/search/physics?searchtype=author&query=Nomachi%2C+M">M. Nomachi</a>, <a href="/search/physics?searchtype=author&query=Shima%2C+T">T. Shima</a>, <a href="/search/physics?searchtype=author&query=Bezerra%2C+T+J+C">T. J. C. Bezerra</a>, <a href="/search/physics?searchtype=author&query=Chauveau%2C+E">E. Chauveau</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a>, <a href="/search/physics?searchtype=author&query=Stancu%2C+I">I. Stancu</a>, <a href="/search/physics?searchtype=author&query=Yeh%2C+M">M. Yeh</a>, <a href="/search/physics?searchtype=author&query=Toki%2C+W">W. Toki</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1601.01046v1-abstract-short" style="display: inline;"> The JSNS2 (J-PARC E56) experiment aims to search for sterile neutrinos at the J-PARC Materials and Life Sciences Experimental Facility (MLF).After the submission of a proposal to the J-PARC PAC, stage-1 approval was granted to the JSNS2 experiment. The approval followed a series of background measurements which were performed in 2014. Subsequent for stage-1 approval, the JSNS2 collaboration has ma… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1601.01046v1-abstract-full').style.display = 'inline'; document.getElementById('1601.01046v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1601.01046v1-abstract-full" style="display: none;"> The JSNS2 (J-PARC E56) experiment aims to search for sterile neutrinos at the J-PARC Materials and Life Sciences Experimental Facility (MLF).After the submission of a proposal to the J-PARC PAC, stage-1 approval was granted to the JSNS2 experiment. The approval followed a series of background measurements which were performed in 2014. Subsequent for stage-1 approval, the JSNS2 collaboration has made continuous efforts to write a Technical Design Report (TDR).This TDR will include two major items as discussed in the previous status report for the 20th J-PARC PAC: (1) A realistic detector location (2) Well understood and realistic detector performance using simulation studies, primarily in consideration of fast neutron rejection. Since August we have been in discussions with MLF staff regarding an appropriate detector location. We are also in the process of setting up a Monte Carlo (MC) simulation framework in order to study detector's performance in realistic conditions. In addition, we have pursued hardware R&D work for the liquid scintillator (LS) and to improve the dynamic range of the 10" photomultiplier tubes (PMTs). The LS R&D works includes Cherenkov studies inside the LS, and a Pulse Shape Discrimination (PSD) study with a test-beam, performed at Tohoku University. We also estimate the PSD performance of a full-sized detector using a detailed MC simulation. In this status report, we describe progress on this work. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1601.01046v1-abstract-full').style.display = 'none'; document.getElementById('1601.01046v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 January, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2016. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1507.07076">arXiv:1507.07076</a> <span> [<a href="https://arxiv.org/pdf/1507.07076">pdf</a>, <a href="https://arxiv.org/format/1507.07076">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Status Report for the 20th J-PARC PAC : A Search for Sterile Neutrino at J-PARC MLF (J-PARC E56, JSNS2) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Meigo%2C+S">S. Meigo</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+K">K. Sakai</a>, <a href="/search/physics?searchtype=author&query=Sakamoto%2C+S">S. Sakamoto</a>, <a href="/search/physics?searchtype=author&query=Suzuya%2C+K">K. Suzuya</a>, <a href="/search/physics?searchtype=author&query=Iwai%2C+E">E. Iwai</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Monjushiro%2C+S">S. Monjushiro</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Taira%2C+M">M. Taira</a>, <a href="/search/physics?searchtype=author&query=Niiyama%2C+M">M. Niiyama</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Nakano%2C+T">T. Nakano</a>, <a href="/search/physics?searchtype=author&query=Nomachi%2C+M">M. Nomachi</a>, <a href="/search/physics?searchtype=author&query=Shima%2C+T">T. Shima</a>, <a href="/search/physics?searchtype=author&query=Bezerra%2C+T+J+C">T. J. C. Bezerra</a>, <a href="/search/physics?searchtype=author&query=Chauveau%2C+E">E. Chauveau</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a>, <a href="/search/physics?searchtype=author&query=Stancu%2C+I">I. Stancu</a>, <a href="/search/physics?searchtype=author&query=Yeh%2C+M">M. Yeh</a>, <a href="/search/physics?searchtype=author&query=Ray%2C+H">H. Ray</a> , et al. (6 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1507.07076v1-abstract-short" style="display: inline;"> On April 2015, the J-PARC E56 (JSNS2: J-PARC Sterile Neutrino Search using neutrinos from J-PARC Spallation Neutron Source) experiment officially obtained stage-1 approval from J-PARC. We have since started to perform liquid scintillator R&D for improving energy resolution and fast neutron rejection. Also, we are studying Avalanche Photo-Diodes (SiPM) inside the liquid scintillator. In addition to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.07076v1-abstract-full').style.display = 'inline'; document.getElementById('1507.07076v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1507.07076v1-abstract-full" style="display: none;"> On April 2015, the J-PARC E56 (JSNS2: J-PARC Sterile Neutrino Search using neutrinos from J-PARC Spallation Neutron Source) experiment officially obtained stage-1 approval from J-PARC. We have since started to perform liquid scintillator R&D for improving energy resolution and fast neutron rejection. Also, we are studying Avalanche Photo-Diodes (SiPM) inside the liquid scintillator. In addition to the R&D work, a background measurement for the proton beam bunch timing using a small liquid scintillator volume was planned, and the safety discussions for the measurement have been done. This report describes the status of the R&D work and the background measurements, in addition to the milestones required before stage-2 approval. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.07076v1-abstract-full').style.display = 'none'; document.getElementById('1507.07076v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20th J-PARC PAC status report</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.06324">arXiv:1502.06324</a> <span> [<a href="https://arxiv.org/pdf/1502.06324">pdf</a>, <a href="https://arxiv.org/format/1502.06324">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptv078">10.1093/ptep/ptv078 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> On-site Background Measurements for the J-PARC E56 Experiment: A Search for Sterile Neutrino at J-PARC MLF </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Bezerra%2C+T+J+C">T. J. C. Bezerra</a>, <a href="/search/physics?searchtype=author&query=Chauveau%2C+E">E. Chauveau</a>, <a href="/search/physics?searchtype=author&query=Enomoto%2C+T">T. Enomoto</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Igarashi%2C+Y">Y. Igarashi</a>, <a href="/search/physics?searchtype=author&query=Iwai%2C+E">E. Iwai</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Meigo%2C+S">S. Meigo</a>, <a href="/search/physics?searchtype=author&query=Nakano%2C+T">T. Nakano</a>, <a href="/search/physics?searchtype=author&query=Niiyama%2C+M">M. Niiyama</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Nomachi%2C+M">M. Nomachi</a>, <a href="/search/physics?searchtype=author&query=Ohta%2C+R">R. Ohta</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+H">H. Sakai</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+K">K. Sakai</a>, <a href="/search/physics?searchtype=author&query=Sakamoto%2C+S">S. Sakamoto</a>, <a href="/search/physics?searchtype=author&query=Shima%2C+T">T. Shima</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+S+Y">S. Y. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Suzuya%2C+K">K. Suzuya</a>, <a href="/search/physics?searchtype=author&query=Tauchi%2C+K">K. Tauchi</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.06324v2-abstract-short" style="display: inline;"> The J-PARC E56 experiment aims to search for sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). In order to examine the feasibility of the experiment, we measured the background rates of different detector candidate sites, which are located at the third floor of the MLF, using a detector consisting of plastic scintillators with a fiducial mass of 500 kg. The re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.06324v2-abstract-full').style.display = 'inline'; document.getElementById('1502.06324v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.06324v2-abstract-full" style="display: none;"> The J-PARC E56 experiment aims to search for sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). In order to examine the feasibility of the experiment, we measured the background rates of different detector candidate sites, which are located at the third floor of the MLF, using a detector consisting of plastic scintillators with a fiducial mass of 500 kg. The result of the measurements is described in this article. The gammas and neutrons induced by the beam as well as the backgrounds from the cosmic rays were measured. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.06324v2-abstract-full').style.display = 'none'; document.getElementById('1502.06324v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 April, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">submitted to PTEP. arXiv admin note: substantial text overlap with arXiv:1502.02255: Revision on 2015-April-22</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.02255">arXiv:1502.02255</a> <span> [<a href="https://arxiv.org/pdf/1502.02255">pdf</a>, <a href="https://arxiv.org/format/1502.02255">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Status Report (BKG measurement): A Search for Sterile Neutrino at J-PARC MLF </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Meigo%2C+S">S. Meigo</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+K">K. Sakai</a>, <a href="/search/physics?searchtype=author&query=Sakamoto%2C+S">S. Sakamoto</a>, <a href="/search/physics?searchtype=author&query=Suzuya%2C+K">K. Suzuya</a>, <a href="/search/physics?searchtype=author&query=Iwai%2C+E">E. Iwai</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Monjushiro%2C+H">H. Monjushiro</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Ohta%2C+R">R. Ohta</a>, <a href="/search/physics?searchtype=author&query=Taira%2C+M">M. Taira</a>, <a href="/search/physics?searchtype=author&query=Niiyama%2C+M">M. Niiyama</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Nakano%2C+T">T. Nakano</a>, <a href="/search/physics?searchtype=author&query=Nomachi%2C+M">M. Nomachi</a>, <a href="/search/physics?searchtype=author&query=Shima%2C+T">T. Shima</a>, <a href="/search/physics?searchtype=author&query=Bezerra%2C+T+J+C">T. J. C. Bezerra</a>, <a href="/search/physics?searchtype=author&query=Chauveau%2C+E">E. Chauveau</a>, <a href="/search/physics?searchtype=author&query=Enomoto%2C+T">T. Enomoto</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+H">H. Sakai</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.02255v1-abstract-short" style="display: inline;"> At the 17th J-PARC PAC, which was held on September 2013, we proposed the sterile neutrino search at J-PARC MLF. After reviewing the proposal, PAC recommended to have a background measurement at the detector's candidate site location in their report to investigate whether the background rates can be manageable for the real experiment or not. Therefore, we have performed the background measurements… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.02255v1-abstract-full').style.display = 'inline'; document.getElementById('1502.02255v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.02255v1-abstract-full" style="display: none;"> At the 17th J-PARC PAC, which was held on September 2013, we proposed the sterile neutrino search at J-PARC MLF. After reviewing the proposal, PAC recommended to have a background measurement at the detector's candidate site location in their report to investigate whether the background rates can be manageable for the real experiment or not. Therefore, we have performed the background measurements (MLF; 2013BU1301 test experiment) during the summer of 2014, also following the 18th J-PARC PAC recommendations, and the measurements results are described here. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.02255v1-abstract-full').style.display = 'none'; document.getElementById('1502.02255v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.01737">arXiv:1502.01737</a> <span> [<a href="https://arxiv.org/pdf/1502.01737">pdf</a>, <a href="https://arxiv.org/format/1502.01737">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2015.04.008">10.1016/j.nima.2015.04.008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development and operational experience of magnetic horn system for T2K experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sekiguchi%2C+T">T. Sekiguchi</a>, <a href="/search/physics?searchtype=author&query=Bessho%2C+K">K. Bessho</a>, <a href="/search/physics?searchtype=author&query=Fujii%2C+Y">Y. Fujii</a>, <a href="/search/physics?searchtype=author&query=Hagiwara%2C+M">M. Hagiwara</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+T">T. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Hayashi%2C+K">K. Hayashi</a>, <a href="/search/physics?searchtype=author&query=Ishida%2C+T">T. Ishida</a>, <a href="/search/physics?searchtype=author&query=Ishii%2C+T">T. Ishii</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+H">H. Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+T">T. Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Koike%2C+S">S. Koike</a>, <a href="/search/physics?searchtype=author&query=Koseki%2C+K">K. Koseki</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Matsumoto%2C+H">H. Matsumoto</a>, <a href="/search/physics?searchtype=author&query=Nakadaira%2C+T">T. Nakadaira</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+K">K. Nakamura</a>, <a href="/search/physics?searchtype=author&query=Nakayoshi%2C+K">K. Nakayoshi</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Oyama%2C+Y">Y. Oyama</a>, <a href="/search/physics?searchtype=author&query=Sakashita%2C+K">K. Sakashita</a>, <a href="/search/physics?searchtype=author&query=Shibata%2C+M">M. Shibata</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Tada%2C+M">M. Tada</a>, <a href="/search/physics?searchtype=author&query=Takahashi%2C+K">K. Takahashi</a>, <a href="/search/physics?searchtype=author&query=Tsukamoto%2C+T">T. Tsukamoto</a> , et al. (12 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.01737v1-abstract-short" style="display: inline;"> A magnetic horn system to be operated at a pulsed current of 320 kA and to survive high-power proton beam operation at 750 kW was developed for the T2K experiment. The first set of T2K magnetic horns was operated for over 12 million pulses during the four years of operation from 2010 to 2013, under a maximum beam power of 230 kW, and $6.63\times10^{20}$ protons were exposed to the production targe… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.01737v1-abstract-full').style.display = 'inline'; document.getElementById('1502.01737v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.01737v1-abstract-full" style="display: none;"> A magnetic horn system to be operated at a pulsed current of 320 kA and to survive high-power proton beam operation at 750 kW was developed for the T2K experiment. The first set of T2K magnetic horns was operated for over 12 million pulses during the four years of operation from 2010 to 2013, under a maximum beam power of 230 kW, and $6.63\times10^{20}$ protons were exposed to the production target. No significant damage was observed throughout this period. This successful operation of the T2K magnetic horns led to the discovery of the $谓_渭\rightarrow谓_e$ oscillation phenomenon in 2013 by the T2K experiment. In this paper, details of the design, construction, and operation experience of the T2K magnetic horns are described. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.01737v1-abstract-full').style.display = 'none'; document.getElementById('1502.01737v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 40 figures, also submitted to Nuclear Instrument and Methods in Physics Research, A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.0194">arXiv:1412.0194</a> <span> [<a href="https://arxiv.org/pdf/1412.0194">pdf</a>, <a href="https://arxiv.org/format/1412.0194">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptv054">10.1093/ptep/ptv054 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the muon beam direction and muon flux for the T2K neutrino experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Suzuki%2C+K">K. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/physics?searchtype=author&query=Ariga%2C+T">T. Ariga</a>, <a href="/search/physics?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/physics?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/physics?searchtype=author&query=Ereditato%2C+A">A. Ereditato</a>, <a href="/search/physics?searchtype=author&query=Friend%2C+M">M. Friend</a>, <a href="/search/physics?searchtype=author&query=Hartz%2C+M">M. Hartz</a>, <a href="/search/physics?searchtype=author&query=Hiraki%2C+T">T. Hiraki</a>, <a href="/search/physics?searchtype=author&query=Ichikawa%2C+A+K">A. K. Ichikawa</a>, <a href="/search/physics?searchtype=author&query=Ishida%2C+T">T. Ishida</a>, <a href="/search/physics?searchtype=author&query=Ishii%2C+T">T. Ishii</a>, <a href="/search/physics?searchtype=author&query=Juget%2C+F">F. Juget</a>, <a href="/search/physics?searchtype=author&query=Kikawa%2C+T">T. Kikawa</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+T">T. Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+K">K. Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Minamino%2C+A">A. Minamino</a>, <a href="/search/physics?searchtype=author&query=Murakami%2C+A">A. Murakami</a>, <a href="/search/physics?searchtype=author&query=Nakadaira%2C+T">T. Nakadaira</a>, <a href="/search/physics?searchtype=author&query=Nakaya%2C+T">T. Nakaya</a>, <a href="/search/physics?searchtype=author&query=Nakayoshi%2C+K">K. Nakayoshi</a>, <a href="/search/physics?searchtype=author&query=Oyama%2C+Y">Y. Oyama</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1412.0194v1-abstract-short" style="display: inline;"> The Tokai-to-Kamioka (T2K) neutrino experiment measures neutrino oscillations by using an almost pure muon neutrino beam produced at the J-PARC accelerator facility. The T2K muon monitor was installed to measure the direction and stability of the muon beam which is produced together with the muon neutrino beam. The systematic error in the muon beam direction measurement was estimated, using data a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0194v1-abstract-full').style.display = 'inline'; document.getElementById('1412.0194v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.0194v1-abstract-full" style="display: none;"> The Tokai-to-Kamioka (T2K) neutrino experiment measures neutrino oscillations by using an almost pure muon neutrino beam produced at the J-PARC accelerator facility. The T2K muon monitor was installed to measure the direction and stability of the muon beam which is produced together with the muon neutrino beam. The systematic error in the muon beam direction measurement was estimated, using data and MC simulation, to be 0.28 mrad. During beam operation, the proton beam has been controlled using measurements from the muon monitor and the direction of the neutrino beam has been tuned to within 0.3 mrad with respect to the designed beam-axis. In order to understand the muon beam properties,measurement of the absolute muon yield at the muon monitor was conducted with an emulsion detector. The number of muon tracks was measured to be $(4.06\pm0.05)\times10^4$ cm$^{-2}$ normalized with $4\times10^{11}$ protons on target with 250 kA horn operation. The result is in agreement with the prediction which is corrected based on hadron production data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0194v1-abstract-full').style.display = 'none'; document.getElementById('1412.0194v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 November, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2014. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.6115">arXiv:1406.6115</a> <span> [<a href="https://arxiv.org/pdf/1406.6115">pdf</a>, <a href="https://arxiv.org/format/1406.6115">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2014.12.017">10.1016/j.nima.2014.12.017 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Heavy Photon Search Test Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Battaglieri%2C+M">Marco Battaglieri</a>, <a href="/search/physics?searchtype=author&query=Boyarinov%2C+S">Sergey Boyarinov</a>, <a href="/search/physics?searchtype=author&query=Bueltmann%2C+S">Stephen Bueltmann</a>, <a href="/search/physics?searchtype=author&query=Burkert%2C+V">Volker Burkert</a>, <a href="/search/physics?searchtype=author&query=Celentano%2C+A">Andrea Celentano</a>, <a href="/search/physics?searchtype=author&query=Charles%2C+G">Gabriel Charles</a>, <a href="/search/physics?searchtype=author&query=Cooper%2C+W">William Cooper</a>, <a href="/search/physics?searchtype=author&query=Cuevas%2C+C">Chris Cuevas</a>, <a href="/search/physics?searchtype=author&query=Dashyan%2C+N">Natalia Dashyan</a>, <a href="/search/physics?searchtype=author&query=DeVita%2C+R">Raffaella DeVita</a>, <a href="/search/physics?searchtype=author&query=Desnault%2C+C">Camille Desnault</a>, <a href="/search/physics?searchtype=author&query=Deur%2C+A">Alexandre Deur</a>, <a href="/search/physics?searchtype=author&query=Egiyan%2C+H">Hovanes Egiyan</a>, <a href="/search/physics?searchtype=author&query=Elouadrhiri%2C+L">Latifa Elouadrhiri</a>, <a href="/search/physics?searchtype=author&query=Essig%2C+R">Rouven Essig</a>, <a href="/search/physics?searchtype=author&query=Fadeyev%2C+V">Vitaliy Fadeyev</a>, <a href="/search/physics?searchtype=author&query=Field%2C+C">Clive Field</a>, <a href="/search/physics?searchtype=author&query=Freyberger%2C+A">Arne Freyberger</a>, <a href="/search/physics?searchtype=author&query=Gershtein%2C+Y">Yuri Gershtein</a>, <a href="/search/physics?searchtype=author&query=Gevorgyan%2C+N">Nerses Gevorgyan</a>, <a href="/search/physics?searchtype=author&query=Girod%2C+F">Francois-Xavier Girod</a>, <a href="/search/physics?searchtype=author&query=Graf%2C+N">Norman Graf</a>, <a href="/search/physics?searchtype=author&query=Graham%2C+M">Mathew Graham</a>, <a href="/search/physics?searchtype=author&query=Griffioen%2C+K">Keith Griffioen</a>, <a href="/search/physics?searchtype=author&query=Grillo%2C+A">Alexander Grillo</a> , et al. (39 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1406.6115v3-abstract-short" style="display: inline;"> The Heavy Photon Search (HPS), an experiment to search for a hidden sector photon in fixed target electroproduction, is preparing for installation at the Thomas Jefferson National Accelerator Facility (JLab) in the Fall of 2014. As the first stage of this project, the HPS Test Run apparatus was constructed and operated in 2012 to demonstrate the experiment's technical feasibility and to confirm th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.6115v3-abstract-full').style.display = 'inline'; document.getElementById('1406.6115v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.6115v3-abstract-full" style="display: none;"> The Heavy Photon Search (HPS), an experiment to search for a hidden sector photon in fixed target electroproduction, is preparing for installation at the Thomas Jefferson National Accelerator Facility (JLab) in the Fall of 2014. As the first stage of this project, the HPS Test Run apparatus was constructed and operated in 2012 to demonstrate the experiment's technical feasibility and to confirm that the trigger rates and occupancies are as expected. This paper describes the HPS Test Run apparatus and readout electronics and its performance. In this setting, a heavy photon can be identified as a narrow peak in the e$^+$e$^-$ invariant mass spectrum, above the trident background or as a narrow invariant mass peak with a decay vertex displaced from the production target, so charged particle tracking and vertexing are needed for its detection. In the HPS Test Run, charged particles are measured with a compact forward silicon microstrip tracker inside a dipole magnet. Electromagnetic showers are detected in a PbW0$_{4}$ crystal calorimeter situated behind the magnet, and are used to trigger the experiment and identify electrons and positrons. Both detectors are placed close to the beam line and split top-bottom. This arrangement provides sensitivity to low-mass heavy photons, allows clear passage of the unscattered beam, and avoids the spray of degraded electrons coming from the target. The discrimination between prompt and displaced e$^+$e$^-$ pairs requires the first layer of silicon sensors be placed only 10~cm downstream of the target. The expected signal is small, and the trident background huge, so the experiment requires very large statistics. Accordingly, the HPS Test Run utilizes high-rate readout and data acquisition electronics and a fast trigger to exploit the essentially 100% duty cycle of the CEBAF accelerator at JLab. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.6115v3-abstract-full').style.display = 'none'; document.getElementById('1406.6115v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Revised version to match published version, 16 pages, 18 figures, published in Nuclear Instruments and Methods in Physics Research Section A, editor: Per Hansson Adrian</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> SLAC-PUB-15999 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Inst. and Methods in Physics Research, A Volume 777, 21 March 2015, Pages 91-101, ISSN 0168-9002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.5560">arXiv:1406.5560</a> <span> [<a href="https://arxiv.org/pdf/1406.5560">pdf</a>, <a href="https://arxiv.org/format/1406.5560">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> LArIAT: Liquid Argon In A Testbeam </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Paley%2C+J">J. Paley</a>, <a href="/search/physics?searchtype=author&query=Gastler%2C+D">D. Gastler</a>, <a href="/search/physics?searchtype=author&query=Kearns%2C+E">E. Kearns</a>, <a href="/search/physics?searchtype=author&query=Linehan%2C+R">R. Linehan</a>, <a href="/search/physics?searchtype=author&query=Patterson%2C+R">R. Patterson</a>, <a href="/search/physics?searchtype=author&query=Foremen%2C+W">W. Foremen</a>, <a href="/search/physics?searchtype=author&query=Ho%2C+J">J. Ho</a>, <a href="/search/physics?searchtype=author&query=Schmitz%2C+D">D. Schmitz</a>, <a href="/search/physics?searchtype=author&query=Johnson%2C+R">R. Johnson</a>, <a href="/search/physics?searchtype=author&query=John%2C+J+S">J. St. John</a>, <a href="/search/physics?searchtype=author&query=Acciarri%2C+R">R. Acciarri</a>, <a href="/search/physics?searchtype=author&query=Adamson%2C+P">P. Adamson</a>, <a href="/search/physics?searchtype=author&query=Backfish%2C+M">M. Backfish</a>, <a href="/search/physics?searchtype=author&query=Badgett%2C+W">W. Badgett</a>, <a href="/search/physics?searchtype=author&query=Baller%2C+B">B. Baller</a>, <a href="/search/physics?searchtype=author&query=Hahn%2C+A">A. Hahn</a>, <a href="/search/physics?searchtype=author&query=Jensen%2C+D">D. Jensen</a>, <a href="/search/physics?searchtype=author&query=Junk%2C+T">T. Junk</a>, <a href="/search/physics?searchtype=author&query=Kirby%2C+M">M. Kirby</a>, <a href="/search/physics?searchtype=author&query=Kobilarcik%2C+T">T. Kobilarcik</a>, <a href="/search/physics?searchtype=author&query=Kryczynski%2C+P">P. Kryczynski</a>, <a href="/search/physics?searchtype=author&query=Lippincott%2C+H">H. Lippincott</a>, <a href="/search/physics?searchtype=author&query=Marchionni%2C+A">A. Marchionni</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Raaf%2C+J">J. Raaf</a> , et al. (42 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1406.5560v3-abstract-short" style="display: inline;"> Liquid Argon Time Projection Chambers (LArTPCs) are ideal detectors for precision neutrino physics. These detectors, when located deep underground, can also be used for measurements of proton decay, and astrophysical neutrinos. The technology must be completely developed, up to very large mass scales, and fully mastered to construct and operate these detectors for this physics program. As part of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.5560v3-abstract-full').style.display = 'inline'; document.getElementById('1406.5560v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.5560v3-abstract-full" style="display: none;"> Liquid Argon Time Projection Chambers (LArTPCs) are ideal detectors for precision neutrino physics. These detectors, when located deep underground, can also be used for measurements of proton decay, and astrophysical neutrinos. The technology must be completely developed, up to very large mass scales, and fully mastered to construct and operate these detectors for this physics program. As part of an integrated plan of developing these detectors, accurate measurements in LArTPC of known particle species in the relevant energy ranges are now deemed as necessary. The LArIAT program aims to directly achieve these goals by deploying LArTPC detectors in a dedicated calibration test beam line at Fermilab. The set of measurements envisaged here are significant for both the short-baseline (SBN) and long-baseline (LBN) neutrino oscillation programs in the US, starting with MicroBooNE in the near term and with the adjoint near and far liquid argon detectors in the Booster beam line at Fermilab envisioned in the mid-term, and moving towards deep underground physics such as with the long-baseline neutrino facility (LBNF) in the longer term. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.5560v3-abstract-full').style.display = 'none'; document.getElementById('1406.5560v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1402.2692">arXiv:1402.2692</a> <span> [<a href="https://arxiv.org/pdf/1402.2692">pdf</a>, <a href="https://arxiv.org/ps/1402.2692">ps</a>, <a href="https://arxiv.org/format/1402.2692">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2014.04.041">10.1016/j.nima.2014.04.041 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Initial Results of a Silicon Sensor Irradiation Study for ILC Extreme Forward Calorimetry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Band%2C+R">R. Band</a>, <a href="/search/physics?searchtype=author&query=Fadeyev%2C+V">V. Fadeyev</a>, <a href="/search/physics?searchtype=author&query=Field%2C+R+C">R. C. Field</a>, <a href="/search/physics?searchtype=author&query=Key%2C+S">S. Key</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+T">T. Kim</a>, <a href="/search/physics?searchtype=author&query=Markiewicz%2C+T">T. Markiewicz</a>, <a href="/search/physics?searchtype=author&query=Martinez-McKinney%2C+F">F. Martinez-McKinney</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Mistry%2C+K">K. Mistry</a>, <a href="/search/physics?searchtype=author&query=Nidumolu%2C+R">R. Nidumolu</a>, <a href="/search/physics?searchtype=author&query=Schumm%2C+B+A">B. A. Schumm</a>, <a href="/search/physics?searchtype=author&query=Spencer%2C+E">E. Spencer</a>, <a href="/search/physics?searchtype=author&query=Timlin%2C+C">C. Timlin</a>, <a href="/search/physics?searchtype=author&query=Wilder%2C+M">M. Wilder</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1402.2692v1-abstract-short" style="display: inline;"> Detectors proposed for the International Linear Collider (ILC) incorporate a tungsten sampling calorimeter (`BeamCal') intended to reconstruct showers of electrons, positrons and photons that emerge from the interaction point of the collider with angles between 5 and 50 milliradians. For the innermost radius of this calorimeter, radiation doses at shower-max are expected to reach 100 MRad per year… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.2692v1-abstract-full').style.display = 'inline'; document.getElementById('1402.2692v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1402.2692v1-abstract-full" style="display: none;"> Detectors proposed for the International Linear Collider (ILC) incorporate a tungsten sampling calorimeter (`BeamCal') intended to reconstruct showers of electrons, positrons and photons that emerge from the interaction point of the collider with angles between 5 and 50 milliradians. For the innermost radius of this calorimeter, radiation doses at shower-max are expected to reach 100 MRad per year, primarily due to minimum-ionizing electrons and positrons that arise in the induced electromagnetic showers of e+e- `beamstrahlung' pairs produced in the ILC beam-beam interaction. However, radiation damage to calorimeter sensors may be dominated by hadrons induced by nuclear interactions of shower photons, which are much more likely to contribute to the non-ionizing energy loss that has been observed to damage sensors exposed to hadronic radiation. We report here on the results of SLAC Experiment T-506, for which several different types of silicon diode sensors were exposed to doses of radiation induced by showering electrons of energy 3.5-10.6 GeV. By embedding the sensor under irradiation within a tungsten radiator, the exposure incorporated hadronic species that would potentially contribute to the degradation of a sensor mounted in a precision sampling calorimeter. Depending on sensor technology, efficient charge collection was observed for doses as large as 220 MRad. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.2692v1-abstract-full').style.display = 'none'; document.getElementById('1402.2692v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 February, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Talk presented at the International Workshop on Future Linear Colliders (LCWS13), Tokyo, Japan, 11-15 November 2013</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1310.1437">arXiv:1310.1437</a> <span> [<a href="https://arxiv.org/pdf/1310.1437">pdf</a>, <a href="https://arxiv.org/format/1310.1437">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Proposal: A Search for Sterile Neutrino at J-PARC Materials and Life Science Experimental Facility </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+S">S. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Kasugai%2C+Y">Y. Kasugai</a>, <a href="/search/physics?searchtype=author&query=Meigo%2C+S">S. Meigo</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+K">K. Sakai</a>, <a href="/search/physics?searchtype=author&query=Sakamoto%2C+S">S. Sakamoto</a>, <a href="/search/physics?searchtype=author&query=Suzuya%2C+K">K. Suzuya</a>, <a href="/search/physics?searchtype=author&query=Iwai%2C+E">E. Iwai</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Ohta%2C+R">R. Ohta</a>, <a href="/search/physics?searchtype=author&query=Niiyama%2C+M">M. Niiyama</a>, <a href="/search/physics?searchtype=author&query=Ajimura%2C+S">S. Ajimura</a>, <a href="/search/physics?searchtype=author&query=Hiraiwa%2C+T">T. Hiraiwa</a>, <a href="/search/physics?searchtype=author&query=Nakano%2C+T">T. Nakano</a>, <a href="/search/physics?searchtype=author&query=Nomachi%2C+M">M. Nomachi</a>, <a href="/search/physics?searchtype=author&query=Shima%2C+T">T. Shima</a>, <a href="/search/physics?searchtype=author&query=Bezerra%2C+T+J+C">T. J. C. Bezerra</a>, <a href="/search/physics?searchtype=author&query=Chauveau%2C+E">E. Chauveau</a>, <a href="/search/physics?searchtype=author&query=Enomoto%2C+T">T. Enomoto</a>, <a href="/search/physics?searchtype=author&query=Furuta%2C+H">H. Furuta</a>, <a href="/search/physics?searchtype=author&query=Sakai%2C+H">H. Sakai</a>, <a href="/search/physics?searchtype=author&query=Suekane%2C+F">F. Suekane</a>, <a href="/search/physics?searchtype=author&query=Yeh%2C+M">M. Yeh</a>, <a href="/search/physics?searchtype=author&query=Garvey%2C+G+T">G. T. Garvey</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1310.1437v1-abstract-short" style="display: inline;"> We propose a definite search for sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). With the 3 GeV Rapid Cycling Synchrotron (RCS) and spallation neutron target, an intense neutrino beam from muon decay at rest (DAR) is available. Neutrinos come from 渭+ decay, and the oscillation to be searched for is (anti 谓渭-> anti 谓e) which is detected by the inverse 尾decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1437v1-abstract-full').style.display = 'inline'; document.getElementById('1310.1437v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1310.1437v1-abstract-full" style="display: none;"> We propose a definite search for sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). With the 3 GeV Rapid Cycling Synchrotron (RCS) and spallation neutron target, an intense neutrino beam from muon decay at rest (DAR) is available. Neutrinos come from 渭+ decay, and the oscillation to be searched for is (anti 谓渭-> anti 谓e) which is detected by the inverse 尾decay interaction (anti 谓e + p -> e+ + n), followed by a gamma from neutron capture. The unique features of the proposed experiment, compared with the LSND and experiments using horn focused beams, are; (1) The pulsed beam with about 600 ns spill width from J-PARC RCS and muon long lifetime allow us to select neutrinos from 渭DAR only. (2) Due to nuclear absorption of 蟺- and 渭-, neutrinos from 渭- decay are suppressed to about the $10^{-3}$ level. (3) Neutrino cross sections are well known. The inverse 尾decay cross section is known to be a few percent accuracy. (4) The neutrino energy can be calculated from positron energy by adding ~1.8 MeV. (5) The anti 谓渭and 谓e fluxes have different and well defined spectra. This allows us to separate oscillated signals from those due to 渭- decay contamination. We propose to proceed with the oscillation search in steps since the region of 螖m^2 to be searched can be anywhere between sub-eV^2 to several tens of eV^2. We start to examine the large 螖m^2 region, which can be done with short baseline at first. At close distance to the MLF target gives a high neutrino flux, and allows us to use relatively small detector. If no definitive positive signal is found, a future option exists to cover small 螖m^2 region. This needs a relatively long baseline and requires a large detector to compensate for the reduced neutrino flux. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1437v1-abstract-full').style.display = 'none'; document.getElementById('1310.1437v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2013. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.8166">arXiv:1307.8166</a> <span> [<a href="https://arxiv.org/pdf/1307.8166">pdf</a>, <a href="https://arxiv.org/ps/1307.8166">ps</a>, <a href="https://arxiv.org/format/1307.8166">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/9/05/T05005">10.1088/1748-0221/9/05/T05005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Liquid Argon Time Projection Chamber Research and Development in the United States </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baller%2C+B">B. Baller</a>, <a href="/search/physics?searchtype=author&query=Bromberg%2C+C">C. Bromberg</a>, <a href="/search/physics?searchtype=author&query=Buchanan%2C+N">N. Buchanan</a>, <a href="/search/physics?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+H">H. Chen</a>, <a href="/search/physics?searchtype=author&query=Church%2C+E">E. Church</a>, <a href="/search/physics?searchtype=author&query=Gehman%2C+V">V. Gehman</a>, <a href="/search/physics?searchtype=author&query=Greenlee%2C+H">H. Greenlee</a>, <a href="/search/physics?searchtype=author&query=Guardincerri%2C+E">E. Guardincerri</a>, <a href="/search/physics?searchtype=author&query=Jones%2C+B">B. Jones</a>, <a href="/search/physics?searchtype=author&query=Junk%2C+T">T. Junk</a>, <a href="/search/physics?searchtype=author&query=Katori%2C+T">T. Katori</a>, <a href="/search/physics?searchtype=author&query=Kirby%2C+M">M. Kirby</a>, <a href="/search/physics?searchtype=author&query=Lang%2C+K">K. Lang</a>, <a href="/search/physics?searchtype=author&query=Loer%2C+B">B. Loer</a>, <a href="/search/physics?searchtype=author&query=Marchionni%2C+A">A. Marchionni</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Mauger%2C+C">C. Mauger</a>, <a href="/search/physics?searchtype=author&query=Menegolli%2C+A">A. Menegolli</a>, <a href="/search/physics?searchtype=author&query=Montanari%2C+D">D. Montanari</a>, <a href="/search/physics?searchtype=author&query=Mufson%2C+S">S. Mufson</a>, <a href="/search/physics?searchtype=author&query=Norris%2C+B">B. Norris</a>, <a href="/search/physics?searchtype=author&query=Pordes%2C+S">S. Pordes</a>, <a href="/search/physics?searchtype=author&query=Raaf%2C+J">J. Raaf</a>, <a href="/search/physics?searchtype=author&query=Rebel%2C+B">B. Rebel</a> , et al. (12 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1307.8166v3-abstract-short" style="display: inline;"> A workshop was held at Fermilab on March 20-21, 2013 to discuss the development of liquid argon time projection chambers (LArTPC) in the United States. The workshop was organized under the auspices of the Coordinating Panel for Advanced Detectors, a body that was initiated by the American Physical Society Division of Particles and Fields. All presentations at the workshop were made in plenary sess… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.8166v3-abstract-full').style.display = 'inline'; document.getElementById('1307.8166v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.8166v3-abstract-full" style="display: none;"> A workshop was held at Fermilab on March 20-21, 2013 to discuss the development of liquid argon time projection chambers (LArTPC) in the United States. The workshop was organized under the auspices of the Coordinating Panel for Advanced Detectors, a body that was initiated by the American Physical Society Division of Particles and Fields. All presentations at the workshop were made in plenary sessions organized into seven topical categories: $i)$ Argon Purity, $ii)$ Cryogenics, $iii)$ TPC and High Voltage, $iv)$ Electronics, Data Acquisition and Triggering, $v)$ Scintillation Light Detection, $vi)$ Calibration and Test Beams, and $vii)$ Software. This document summarizes the current efforts in each of these topical categories. It also highlights areas in LArTPC research and development that are common between neutrino experiments and dark matter experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.8166v3-abstract-full').style.display = 'none'; document.getElementById('1307.8166v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 March, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">53 pages, 28 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-CONF-13-257-E </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1206.1181">arXiv:1206.1181</a> <span>  </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Performance of a 250L liquid Argon TPC for sub-GeV charged particle identification </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=collaboration%2C+J+T">J-PARC T32 collaboration</a>, <a href="/search/physics?searchtype=author&query=%3A"> :</a>, <a href="/search/physics?searchtype=author&query=Araoka%2C+O">O. Araoka</a>, <a href="/search/physics?searchtype=author&query=Badertscher%2C+A">A. Badertscher</a>, <a href="/search/physics?searchtype=author&query=Curioni%2C+A">A. Curioni</a>, <a href="/search/physics?searchtype=author&query=Di+Luise%2C+S">S. Di Luise</a>, <a href="/search/physics?searchtype=author&query=Degunda%2C+U">U. Degunda</a>, <a href="/search/physics?searchtype=author&query=Epprecht%2C+L">L. Epprecht</a>, <a href="/search/physics?searchtype=author&query=Esposito%2C+L">L. Esposito</a>, <a href="/search/physics?searchtype=author&query=Gendotti%2C+A">A. Gendotti</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+T">T. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Horikawa%2C+S">S. Horikawa</a>, <a href="/search/physics?searchtype=author&query=Kasami%2C+K">K. Kasami</a>, <a href="/search/physics?searchtype=author&query=Kimura%2C+N">N. Kimura</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+L">L. Knecht</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+T">T. Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Lazzaro%2C+C">C. Lazzaro</a>, <a href="/search/physics?searchtype=author&query=Lussi%2C+D">D. Lussi</a>, <a href="/search/physics?searchtype=author&query=Maki%2C+M">M. Maki</a>, <a href="/search/physics?searchtype=author&query=Marchionni%2C+A">A. Marchionni</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Meregaglia%2C+A">A. Meregaglia</a>, <a href="/search/physics?searchtype=author&query=Mitani%2C+T">T. Mitani</a>, <a href="/search/physics?searchtype=author&query=Nagasaka%2C+Y">Y. Nagasaka</a>, <a href="/search/physics?searchtype=author&query=Naganoma%2C+J">J. Naganoma</a> , et al. (17 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1206.1181v2-abstract-short" style="display: inline;"> We have constructed a liquid Argon TPC detector with fiducial mass of 150 kg as a part of the R&D program of the next generation neutrino and nucleon decay detector. This paper describes a study of particle identification performance of the detector using well-defined charged particles (pions, kaons, and protons) with momentum of ~800 MeV/$c$ obtained at J-PARC K1.1BR beamline. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1206.1181v2-abstract-full" style="display: none;"> We have constructed a liquid Argon TPC detector with fiducial mass of 150 kg as a part of the R&D program of the next generation neutrino and nucleon decay detector. This paper describes a study of particle identification performance of the detector using well-defined charged particles (pions, kaons, and protons) with momentum of ~800 MeV/$c$ obtained at J-PARC K1.1BR beamline. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1206.1181v2-abstract-full').style.display = 'none'; document.getElementById('1206.1181v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 June, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 June, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">his paper has been withdrawn by the author due to a crucial problem on the result section</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1111.3119">arXiv:1111.3119</a> <span> [<a href="https://arxiv.org/pdf/1111.3119">pdf</a>, <a href="https://arxiv.org/format/1111.3119">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2012.03.023">10.1016/j.nima.2012.03.023 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Abgrall%2C+N">N. Abgrall</a>, <a href="/search/physics?searchtype=author&query=Ajima%2C+Y">Y. Ajima</a>, <a href="/search/physics?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/physics?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/physics?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/physics?searchtype=author&query=Andrieu%2C+B">B. Andrieu</a>, <a href="/search/physics?searchtype=author&query=Anerella%2C+M+D">M. D. Anerella</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Araoka%2C+O">O. Araoka</a>, <a href="/search/physics?searchtype=author&query=Argyriades%2C+J">J. Argyriades</a>, <a href="/search/physics?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/physics?searchtype=author&query=Ariga%2C+T">T. Ariga</a>, <a href="/search/physics?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/physics?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/physics?searchtype=author&query=Badertscher%2C+A">A. Badertscher</a>, <a href="/search/physics?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/physics?searchtype=author&query=Bass%2C+M">M. Bass</a>, <a href="/search/physics?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/physics?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/physics?searchtype=author&query=Bentham%2C+S">S. Bentham</a>, <a href="/search/physics?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/physics?searchtype=author&query=Berger%2C+B+E">B. E. Berger</a> , et al. (407 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1111.3119v1-abstract-short" style="display: inline;"> Precise measurement of neutrino beam direction and intensity was achieved based on a new concept with modularized neutrino detectors. INGRID (Interactive Neutrino GRID) is an on-axis near detector for the T2K long baseline neutrino oscillation experiment. INGRID consists of 16 identical modules arranged in horizontal and vertical arrays around the beam center. The module has a sandwich structure o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.3119v1-abstract-full').style.display = 'inline'; document.getElementById('1111.3119v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.3119v1-abstract-full" style="display: none;"> Precise measurement of neutrino beam direction and intensity was achieved based on a new concept with modularized neutrino detectors. INGRID (Interactive Neutrino GRID) is an on-axis near detector for the T2K long baseline neutrino oscillation experiment. INGRID consists of 16 identical modules arranged in horizontal and vertical arrays around the beam center. The module has a sandwich structure of iron target plates and scintillator trackers. INGRID directly monitors the muon neutrino beam profile center and intensity using the number of observed neutrino events in each module. The neutrino beam direction is measured with accuracy better than 0.4 mrad from the measured profile center. The normalized event rate is measured with 4% precision. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.3119v1-abstract-full').style.display = 'none'; document.getElementById('1111.3119v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">32 pages, 27 figures, submitted to Nucl. Instr. and Meth. A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1106.1238">arXiv:1106.1238</a> <span> [<a href="https://arxiv.org/pdf/1106.1238">pdf</a>, <a href="https://arxiv.org/ps/1106.1238">ps</a>, <a href="https://arxiv.org/format/1106.1238">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2011.06.067">10.1016/j.nima.2011.06.067 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The T2K Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=T2K+Collaboration"> T2K Collaboration</a>, <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Abgrall%2C+N">N. Abgrall</a>, <a href="/search/physics?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/physics?searchtype=author&query=Ajima%2C+Y">Y. Ajima</a>, <a href="/search/physics?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/physics?searchtype=author&query=Allan%2C+D">D. Allan</a>, <a href="/search/physics?searchtype=author&query=Amaudruz%2C+P+-">P. -A. Amaudruz</a>, <a href="/search/physics?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/physics?searchtype=author&query=Andrieu%2C+B">B. Andrieu</a>, <a href="/search/physics?searchtype=author&query=Anerella%2C+M+D">M. D. Anerella</a>, <a href="/search/physics?searchtype=author&query=Angelsen%2C+C">C. Angelsen</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Araoka%2C+O">O. Araoka</a>, <a href="/search/physics?searchtype=author&query=Argyriades%2C+J">J. Argyriades</a>, <a href="/search/physics?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/physics?searchtype=author&query=Ariga%2C+T">T. Ariga</a>, <a href="/search/physics?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/physics?searchtype=author&query=de+Andr%C3%A9%2C+J+P+A+M">J. P. A. M. de Andr茅</a>, <a href="/search/physics?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/physics?searchtype=author&query=Badertscher%2C+A">A. Badertscher</a>, <a href="/search/physics?searchtype=author&query=Ballester%2C+O">O. Ballester</a>, <a href="/search/physics?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Baron%2C+P">P. Baron</a> , et al. (499 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1106.1238v2-abstract-short" style="display: inline;"> The T2K experiment is a long-baseline neutrino oscillation experiment. Its main goal is to measure the last unknown lepton sector mixing angle 胃_{13} by observing 谓_e appearance in a 谓_渭 beam. It also aims to make a precision measurement of the known oscillation parameters, 螖m^{2}_{23} and sin^{2} 2胃_{23}, via 谓_渭 disappearance studies. Other goals of the experiment include various neutrino cross… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1106.1238v2-abstract-full').style.display = 'inline'; document.getElementById('1106.1238v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1106.1238v2-abstract-full" style="display: none;"> The T2K experiment is a long-baseline neutrino oscillation experiment. Its main goal is to measure the last unknown lepton sector mixing angle 胃_{13} by observing 谓_e appearance in a 谓_渭 beam. It also aims to make a precision measurement of the known oscillation parameters, 螖m^{2}_{23} and sin^{2} 2胃_{23}, via 谓_渭 disappearance studies. Other goals of the experiment include various neutrino cross section measurements and sterile neutrino searches. The experiment uses an intense proton beam generated by the J-PARC accelerator in Tokai, Japan, and is composed of a neutrino beamline, a near detector complex (ND280), and a far detector (Super-Kamiokande) located 295 km away from J-PARC. This paper provides a comprehensive review of the instrumentation aspect of the T2K experiment and a summary of the vital information for each subsystem. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1106.1238v2-abstract-full').style.display = 'none'; document.getElementById('1106.1238v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 June, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 June, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">33 pages, 32 figures, Submitted and accepted by NIM A. Editor: Prof. Chang Kee Jung, Department of Physics and Astronomy, SUNY Stony Brook, chang.jung@sunysb.edu, 631-632-8108 Submit Edited to remove line numbers</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1105.5818">arXiv:1105.5818</a> <span> [<a href="https://arxiv.org/pdf/1105.5818">pdf</a>, <a href="https://arxiv.org/format/1105.5818">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> A tagged low-momentum kaon test-beam exposure with a 250L LAr TPC (J-PARC T32) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Araoka%2C+O">O. Araoka</a>, <a href="/search/physics?searchtype=author&query=Badertscher%2C+A">A. Badertscher</a>, <a href="/search/physics?searchtype=author&query=Curioni%2C+A">A. Curioni</a>, <a href="/search/physics?searchtype=author&query=DiLuise%2C+S">S. DiLuise</a>, <a href="/search/physics?searchtype=author&query=Degunda%2C+U">U. Degunda</a>, <a href="/search/physics?searchtype=author&query=Epprecht%2C+L">L. Epprecht</a>, <a href="/search/physics?searchtype=author&query=Esposito%2C+L">L. Esposito</a>, <a href="/search/physics?searchtype=author&query=Gendotti%2C+A">A. Gendotti</a>, <a href="/search/physics?searchtype=author&query=Hasegawa%2C+T">T. Hasegawa</a>, <a href="/search/physics?searchtype=author&query=Horikawa%2C+S">S. Horikawa</a>, <a href="/search/physics?searchtype=author&query=Kasami%2C+K">K. Kasami</a>, <a href="/search/physics?searchtype=author&query=Kimura%2C+N">N. Kimura</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+L">L. Knecht</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+T">T. Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Lazzaro%2C+C">C. Lazzaro</a>, <a href="/search/physics?searchtype=author&query=Lussi%2C+D">D. Lussi</a>, <a href="/search/physics?searchtype=author&query=Maki%2C+M">M. Maki</a>, <a href="/search/physics?searchtype=author&query=Marchionni%2C+A">A. Marchionni</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Meregaglia%2C+A">A. Meregaglia</a>, <a href="/search/physics?searchtype=author&query=Mitani%2C+T">T. Mitani</a>, <a href="/search/physics?searchtype=author&query=Nagasaka%2C+Y">Y. Nagasaka</a>, <a href="/search/physics?searchtype=author&query=Naganoma%2C+J">J. Naganoma</a>, <a href="/search/physics?searchtype=author&query=Naito%2C+H">H. Naito</a>, <a href="/search/physics?searchtype=author&query=Narita%2C+S">S. Narita</a> , et al. (13 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1105.5818v1-abstract-short" style="display: inline;"> At the beginning of 2010, we presented at the J-PARC PAC an R$&$D program towards large (100 kton scale) liquid argon TPCs, suitable to investigate, in conjunction with the J-PARC neutrino beam, the possibility of CP violation in the neutrino sector and to search for nucleon decay. As a first step we proposed a test experiment to identify and measure charged kaons, including their decays, in liqui… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.5818v1-abstract-full').style.display = 'inline'; document.getElementById('1105.5818v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1105.5818v1-abstract-full" style="display: none;"> At the beginning of 2010, we presented at the J-PARC PAC an R$&$D program towards large (100 kton scale) liquid argon TPCs, suitable to investigate, in conjunction with the J-PARC neutrino beam, the possibility of CP violation in the neutrino sector and to search for nucleon decay. As a first step we proposed a test experiment to identify and measure charged kaons, including their decays, in liquid argon. The detector, a 250L LAr TPC, is exposed to charged kaons, in a momentum range of 540-800 MeV/c, in the K1.1BR beamline of the J-PARC slow extraction facility. This is especially important to estimate efficiency and background for nucleon decay searches in the charged kaon mode ($p \rightarrow \bar谓 K^+$, etc.), where the kaon momentum is expected to be in the few hundred MeV/c range. A prototype setup has been exposed in the K1.1BR beamline in the fall of 2010. This paper describes the capabilities of the beamline, the construction and setting up of the detector prototype, along with some preliminary results. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.5818v1-abstract-full').style.display = 'none'; document.getElementById('1105.5818v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 May, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 14 figures, to appear in Proc. of 1st International Workshop towards the Giant Liquid Argon Charge Imaging Experiment (GLA2010), Tsukuba (Japan), March 2010</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1008.4077">arXiv:1008.4077</a> <span> [<a href="https://arxiv.org/pdf/1008.4077">pdf</a>, <a href="https://arxiv.org/ps/1008.4077">ps</a>, <a href="https://arxiv.org/format/1008.4077">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2010.09.074">10.1016/j.nima.2010.09.074 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Design and performance of the muon monitor for the T2K neutrino oscillation experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Matsuoka%2C+K">K. Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Ichikawa%2C+A+K">A. K. Ichikawa</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Maeda%2C+K">K. Maeda</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=Matsumura%2C+C">C. Matsumura</a>, <a href="/search/physics?searchtype=author&query=Murakami%2C+A">A. Murakami</a>, <a href="/search/physics?searchtype=author&query=Nakaya%2C+T">T. Nakaya</a>, <a href="/search/physics?searchtype=author&query=Nishikawa%2C+K">K. Nishikawa</a>, <a href="/search/physics?searchtype=author&query=Ozaki%2C+T">T. Ozaki</a>, <a href="/search/physics?searchtype=author&query=Sakashita%2C+K">K. Sakashita</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+K">K. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+S+Y">S. Y. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Tashiro%2C+K">K. Tashiro</a>, <a href="/search/physics?searchtype=author&query=Yamamoto%2C+K">K. Yamamoto</a>, <a href="/search/physics?searchtype=author&query=Yokoyama%2C+M">M. Yokoyama</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1008.4077v2-abstract-short" style="display: inline;"> This article describes the design and performance of the muon monitor for the T2K (Tokaito-Kamioka) long baseline neutrino oscillation experiment. The muon monitor consists of two types of detector arrays: ionization chambers and silicon PIN photodiodes. It measures the intensity and profile of muons produced, along with neutrinos, in the decay of pions. The measurement is sensitive to the intensi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1008.4077v2-abstract-full').style.display = 'inline'; document.getElementById('1008.4077v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1008.4077v2-abstract-full" style="display: none;"> This article describes the design and performance of the muon monitor for the T2K (Tokaito-Kamioka) long baseline neutrino oscillation experiment. The muon monitor consists of two types of detector arrays: ionization chambers and silicon PIN photodiodes. It measures the intensity and profile of muons produced, along with neutrinos, in the decay of pions. The measurement is sensitive to the intensity and direction of the neutrino beam. The linearity and stability of the detectors were measured in beam tests to be within 2.4% and 1.5%, respectively. Based on the test results, the precision of the beam direction measured by the muon monitor is expected to be 0.25 mrad. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1008.4077v2-abstract-full').style.display = 'none'; document.getElementById('1008.4077v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 September, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 August, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2010. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-10-326-E </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A624:591-600,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0904.0122">arXiv:0904.0122</a> <span> [<a href="https://arxiv.org/pdf/0904.0122">pdf</a>, <a href="https://arxiv.org/ps/0904.0122">ps</a>, <a href="https://arxiv.org/format/0904.0122">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/4/10/P10015">10.1088/1748-0221/4/10/P10015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Polarimeters and Energy Spectrometers for the ILC Beam Delivery System </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Boogert%2C+S">S. Boogert</a>, <a href="/search/physics?searchtype=author&query=Hartin%2C+A+F">A. F. Hartin</a>, <a href="/search/physics?searchtype=author&query=Hildreth%2C+M">M. Hildreth</a>, <a href="/search/physics?searchtype=author&query=K%C3%A4fer%2C+D">D. K盲fer</a>, <a href="/search/physics?searchtype=author&query=List%2C+J">J. List</a>, <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">T. Maruyama</a>, <a href="/search/physics?searchtype=author&query=M%C3%B6nig%2C+K">K. M枚nig</a>, <a href="/search/physics?searchtype=author&query=Moffeit%2C+K+C">K. C. Moffeit</a>, <a href="/search/physics?searchtype=author&query=Moortgat-Pick%2C+G">G. Moortgat-Pick</a>, <a href="/search/physics?searchtype=author&query=Riemann%2C+S">S. Riemann</a>, <a href="/search/physics?searchtype=author&query=Schreiber%2C+H+J">H. J. Schreiber</a>, <a href="/search/physics?searchtype=author&query=Sch%C3%BCler%2C+P">P. Sch眉ler</a>, <a href="/search/physics?searchtype=author&query=Torrence%2C+E">E. Torrence</a>, <a href="/search/physics?searchtype=author&query=Woods%2C+M">M. Woods</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0904.0122v3-abstract-short" style="display: inline;"> Any future high energy e+e- linear collider aims at precision measurements of Standard Model quantities as well as of new, not yet discovered phenomena. In order to pursue this physics programme, excellent detectors at the interaction region have to be complemented by beam diagnostics of unprecedented precision. This article gives an overview of current plans and issues for polarimeters and ener… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0904.0122v3-abstract-full').style.display = 'inline'; document.getElementById('0904.0122v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0904.0122v3-abstract-full" style="display: none;"> Any future high energy e+e- linear collider aims at precision measurements of Standard Model quantities as well as of new, not yet discovered phenomena. In order to pursue this physics programme, excellent detectors at the interaction region have to be complemented by beam diagnostics of unprecedented precision. This article gives an overview of current plans and issues for polarimeters and energy spectrometers at the International Linear Collider, which have been designed to fulfill the precision goals at a large range of beam energies from 45.6 GeV at the Z pole up to 250 GeV or, as an upgrade, up to 500 GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0904.0122v3-abstract-full').style.display = 'none'; document.getElementById('0904.0122v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 October, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 April, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Reference paper for the "Letter of Intent" documents of all ILC detector concepts; 15 pages, 9 figures; as accepted by JINST. Improved figure quality and some changes to the text, but basic content unchanged</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY 09-028, SLAC-PUB-13551, ILC-NOTE-2009-049 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 4:P10015,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0901.0596">arXiv:0901.0596</a> <span> [<a href="https://arxiv.org/pdf/0901.0596">pdf</a>, <a href="https://arxiv.org/ps/0901.0596">ps</a>, <a href="https://arxiv.org/format/0901.0596">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Other Condensed Matter">cond-mat.other</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevA.80.043615">10.1103/PhysRevA.80.043615 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quadrupole Oscillations in Bose-Fermi Mixtures of Ultracold Atomic Gases made of Yb atoms in the Time-Dependent Gross-Pitaevskii and Vlasov equations </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Maruyama%2C+T">Tomoyuki Maruyama</a>, <a href="/search/physics?searchtype=author&query=Yabu%2C+H">Hiroyuki Yabu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0901.0596v1-abstract-short" style="display: inline;"> We study quadrupole collective oscillations in the bose-fermi mixtures of ultracold atomic gases of Yb isotopes, which are realized by Kyoto group. Three kinds of combinations are chosen, Yb170-Yb171, Yb170-Yb173 and Yb174-Yb173, where boson-fermion interactions are weakly repulsive, strongly attractive and strongly repulsive respectively. Collective oscillations in these mixtures are calculated… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0901.0596v1-abstract-full').style.display = 'inline'; document.getElementById('0901.0596v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0901.0596v1-abstract-full" style="display: none;"> We study quadrupole collective oscillations in the bose-fermi mixtures of ultracold atomic gases of Yb isotopes, which are realized by Kyoto group. Three kinds of combinations are chosen, Yb170-Yb171, Yb170-Yb173 and Yb174-Yb173, where boson-fermion interactions are weakly repulsive, strongly attractive and strongly repulsive respectively. Collective oscillations in these mixtures are calculated in a dynamical time-evolution approach formulated with the time-dependent Gross-Pitaevskii and the Vlasov equations. The boson oscillations are shown to have one collective mode, and the fermions are shown to have the boson-forced and two intrinsic modes, which correspond to the inside- and outside-fermion oscillations for the boson-distributed regions. In the case of the weak boson-fermion interactions, the dynamical calculations are shown to be consistent with the results obtained in the small amplitude approximations as the random phase approximation in early stage of oscillation, but, in later stage, these two approaches are shown to give the different results. Also, in the case of the strong boson-fermion interactions, discrepancies appear in early stage of oscillation. We also analyze these differences in two approaches, and show that they originated in the change of the fermion distributions through oscillation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0901.0596v1-abstract-full').style.display = 'none'; document.getElementById('0901.0596v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 January, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2009. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0809.4413">arXiv:0809.4413</a> <span> [<a href="https://arxiv.org/pdf/0809.4413">pdf</a>, <a href="https://arxiv.org/ps/0809.4413">ps</a>, <a href="https://arxiv.org/format/0809.4413">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.astropartphys.2009.02.006">10.1016/j.astropartphys.2009.02.006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Distillation of Liquid Xenon to Remove Krypton </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/physics?searchtype=author&query=Hosaka%2C+J">J. Hosaka</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+K">K. Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Koshio%2C+Y">Y. Koshio</a>, <a href="/search/physics?searchtype=author&query=Minamino%2C+A">A. Minamino</a>, <a href="/search/physics?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/physics?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/physics?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/physics?searchtype=author&query=Nakajima%2C+Y">Y. Nakajima</a>, <a href="/search/physics?searchtype=author&query=Namba%2C+T">T. Namba</a>, <a href="/search/physics?searchtype=author&query=Ogawa%2C+H">H. Ogawa</a>, <a href="/search/physics?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/physics?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/physics?searchtype=author&query=Takeuchi%2C+Y">Y. Takeuchi</a>, <a href="/search/physics?searchtype=author&query=Ueshima%2C+K">K. Ueshima</a>, <a href="/search/physics?searchtype=author&query=Yamashita%2C+M">M. Yamashita</a>, <a href="/search/physics?searchtype=author&query=Kaneyuki%2C+K">K. Kaneyuki</a>, <a href="/search/physics?searchtype=author&query=Ebizuka%2C+Y">Y. Ebizuka</a>, <a href="/search/physics?searchtype=author&query=Kikuchi%2C+J">J. Kikuchi</a>, <a href="/search/physics?searchtype=author&query=Ota%2C+A">A. Ota</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+S">S. Suzuki</a> , et al. (24 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0809.4413v3-abstract-short" style="display: inline;"> A high performance distillation system to remove krypton from xenon was constructed, and a purity level of Kr/Xe = $\sim 3 \times 10^{-12}$ was achieved. This development is crucial in facilitating high sensitivity low background experiments such as the search for dark matter in the universe. </span> <span class="abstract-full has-text-grey-dark mathjax" id="0809.4413v3-abstract-full" style="display: none;"> A high performance distillation system to remove krypton from xenon was constructed, and a purity level of Kr/Xe = $\sim 3 \times 10^{-12}$ was achieved. This development is crucial in facilitating high sensitivity low background experiments such as the search for dark matter in the universe. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0809.4413v3-abstract-full').style.display = 'none'; document.getElementById('0809.4413v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 February, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 September, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 11 figures</span> </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> 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