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name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> <input id="query" name="query" type="text" value="Kubo, H"> <ul id="abstracts"><li><input checked id="abstracts-0" name="abstracts" type="radio" value="show"> <label for="abstracts-0">Show abstracts</label></li><li><input id="abstracts-1" name="abstracts" 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is-link">Go</button> </div> </div> </form> </div> </div> <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/2502.02045">arXiv:2502.02045</a> <span> [<a href="https://arxiv.org/pdf/2502.02045">pdf</a>, <a href="https://arxiv.org/format/2502.02045">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 Methods for Astrophysics">astro-ph.IM</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.2025.170229">10.1016/j.nima.2025.170229 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development and Quality Control of PMT Modules for the Large-Sized Telescopes of the Cherenkov Telescope Array Observatory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Saito%2C+T">T. Saito</a>, <a href="/search/physics?searchtype=author&query=Takahashi%2C+M">M. Takahashi</a>, <a href="/search/physics?searchtype=author&query=Inome%2C+Y">Y. Inome</a>, <a href="/search/physics?searchtype=author&query=Abe%2C+H">H. Abe</a>, <a href="/search/physics?searchtype=author&query=Artero%2C+M">M. Artero</a>, <a href="/search/physics?searchtype=author&query=Blanch%2C+O">O. Blanch</a>, <a href="/search/physics?searchtype=author&query=Gonz%C3%A1lez%2C+J+B">J. Becerra Gonz谩lez</a>, <a href="/search/physics?searchtype=author&query=Fukami%2C+S">S. Fukami</a>, <a href="/search/physics?searchtype=author&query=Hadasch%2C+D">D. Hadasch</a>, <a href="/search/physics?searchtype=author&query=Hanabata%2C+Y">Y. Hanabata</a>, <a href="/search/physics?searchtype=author&query=Hattori%2C+Y">Y. Hattori</a>, <a href="/search/physics?searchtype=author&query=Llorente%2C+J+H">J. Herrera Llorente</a>, <a href="/search/physics?searchtype=author&query=Ishio%2C+K">K. Ishio</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+H">H. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Katagiri%2C+H">H. Katagiri</a>, <a href="/search/physics?searchtype=author&query=Kawamura%2C+K">K. Kawamura</a>, <a href="/search/physics?searchtype=author&query=Kerszberg%2C+D">D. Kerszberg</a>, <a href="/search/physics?searchtype=author&query=Kimura%2C+S">S. Kimura</a>, <a href="/search/physics?searchtype=author&query=Kiyomoto%2C+T">T. Kiyomoto</a>, <a href="/search/physics?searchtype=author&query=Kojima%2C+T">T. Kojima</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+Y">Y. Konno</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+Y">Y. Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Koyama%2C+S">S. Koyama</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Kushida%2C+J">J. Kushida</a> , et al. (34 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="2502.02045v1-abstract-short" style="display: inline;"> The camera of the Large-Sized Telescopes (LSTs) of the Cherenkov Telescope Array Observatory (CTAO) consists of 1855 pixels that are grouped into 265 high-performance photomultiplier tube (PMT) modules. Each module comprises a seven-light-guide plate, seven PMT units, a slow control board, and a readout board with a trigger board. %In this paper we describe The requirements for the PMT modules inc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.02045v1-abstract-full').style.display = 'inline'; document.getElementById('2502.02045v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.02045v1-abstract-full" style="display: none;"> The camera of the Large-Sized Telescopes (LSTs) of the Cherenkov Telescope Array Observatory (CTAO) consists of 1855 pixels that are grouped into 265 high-performance photomultiplier tube (PMT) modules. Each module comprises a seven-light-guide plate, seven PMT units, a slow control board, and a readout board with a trigger board. %In this paper we describe The requirements for the PMT modules include various aspects, such as photon detection efficiency, dynamic range, buffer depth, and test pulse functionality. We have developed a high-performance PMT module that fulfills all these requirements. Mass-production and quality control (QC) of modules for all four LSTs of the northern CTAO have been completed. Here we report on the technical details of each element of the module and its performance, together with the methods and results of QC measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.02045v1-abstract-full').style.display = 'none'; document.getElementById('2502.02045v1-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 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">Published in NIM A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Instruments and Methods in Physics Research A 1073, (2025), 170229 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.05128">arXiv:2403.05128</a> <span> [<a href="https://arxiv.org/pdf/2403.05128">pdf</a>, <a href="https://arxiv.org/format/2403.05128">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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"> High-energy extension of the gamma-ray band observable with an electron-tracking Compton camera </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Oka%2C+T">Tomohiko Oka</a>, <a href="/search/physics?searchtype=author&query=Ogio%2C+S">Shingo Ogio</a>, <a href="/search/physics?searchtype=author&query=Abe%2C+M">Mitsuru Abe</a>, <a href="/search/physics?searchtype=author&query=Hamaguchi%2C+K">Kenji Hamaguchi</a>, <a href="/search/physics?searchtype=author&query=Ikeda%2C+T">Tomonori Ikeda</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">Shunsuke Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Mizumura%2C+Y">Yoshitaka Mizumura</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+Y">Yuta Nakamura</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">Tatsuya Sawano</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Takemura%2C+T">Taito Takemura</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Yoshikawa%2C+K">Kei Yoshikawa</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="2403.05128v1-abstract-short" style="display: inline;"> Although the MeV gamma-ray band is a promising energy-band window in astrophysics, the current situation of MeV gamma-ray astronomy significantly lags behind those of the other energy bands in angular resolution and sensitivity. An electron-tracking Compton camera (ETCC), a next-generation MeV detector, is expected to revolutionize the situation. An ETCC tracks each Compton-recoil electron with a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.05128v1-abstract-full').style.display = 'inline'; document.getElementById('2403.05128v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.05128v1-abstract-full" style="display: none;"> Although the MeV gamma-ray band is a promising energy-band window in astrophysics, the current situation of MeV gamma-ray astronomy significantly lags behind those of the other energy bands in angular resolution and sensitivity. An electron-tracking Compton camera (ETCC), a next-generation MeV detector, is expected to revolutionize the situation. An ETCC tracks each Compton-recoil electron with a gaseous electron tracker and determines the incoming direction of each gamma-ray photon; thus, it has a strong background rejection power and yields a better angular resolution than classical Compton cameras. Here, we study ETCC events in which the Compton-recoil electrons do not deposit all energies to the electron tracker but escape and hit the surrounding pixel scintillator array (PSA). We developed an analysis method for this untapped class of events and applied it to laboratory and simulation data. We found that the energy spectrum obtained from the simulation agreed with that of the actual data within a factor of 1.2. We then evaluated the detector performance using the simulation data. The angular resolution for the new-class events was found to be twice as good as in the previous study at the energy range 1.0--2.0~MeV, where both analyses overlap. We also found that the total effective area is dominated by the contribution of the double-hit events above an energy of 1.5~MeV. Notably, applying this new method extends the sensitive energy range with the ETCC from 0.2--2.1 MeV in the previous studies to up to 3.5~MeV. Adjusting the PSA dynamic range should improve the sensitivity in even higher energy gamma-rays. The development of this new analysis method would pave the way for future observations by ETCC to fill the MeV-band sensitivity gap in astronomy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.05128v1-abstract-full').style.display = 'none'; document.getElementById('2403.05128v1-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 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">11 pages, 8 figures, Accepted for publication in NIM 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/2101.09921">arXiv:2101.09921</a> <span> [<a href="https://arxiv.org/pdf/2101.09921">pdf</a>, <a href="https://arxiv.org/format/2101.09921">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/ptab053">10.1093/ptep/ptab053 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direction-sensitive dark matter search with a low-background gaseous detector NEWAGE-0.3b'' </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ikeda%2C+T">Tomonori Ikeda</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+K">Kiseki Nakamura</a>, <a href="/search/physics?searchtype=author&query=Shimada%2C+T">Takuya Shimada</a>, <a href="/search/physics?searchtype=author&query=Yakabe%2C+R">Ryota Yakabe</a>, <a href="/search/physics?searchtype=author&query=Hashimoto%2C+T">Takashi Hashimoto</a>, <a href="/search/physics?searchtype=author&query=Ishiura%2C+H">Hirohisa Ishiura</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+T">Takuma Nakamura</a>, <a href="/search/physics?searchtype=author&query=Ito%2C+H">Hiroshi Ito</a>, <a href="/search/physics?searchtype=author&query=Ichimura%2C+K">Koichi Ichimura</a>, <a href="/search/physics?searchtype=author&query=Abe%2C+K">Ko Abe</a>, <a href="/search/physics?searchtype=author&query=Kobayashi%2C+K">Kazuyoshi Kobayashi</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Sekiya%2C+H">Hiroyuki Sekiya</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Atsushi Takeda</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</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="2101.09921v2-abstract-short" style="display: inline;"> NEWAGE is a direction-sensitive dark matter search using a low-pressure gaseous time projection chamber. A low alpha-ray emission rate micro pixel chamber had been developed in order to reduce background for dark matter search. We conducted the dark matter search at the Kamioka Observatory in 2018. The total live time was 107.6 days corresponding to an exposure of 1.1 kg${\cdot}$days. Two events r… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.09921v2-abstract-full').style.display = 'inline'; document.getElementById('2101.09921v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2101.09921v2-abstract-full" style="display: none;"> NEWAGE is a direction-sensitive dark matter search using a low-pressure gaseous time projection chamber. A low alpha-ray emission rate micro pixel chamber had been developed in order to reduce background for dark matter search. We conducted the dark matter search at the Kamioka Observatory in 2018. The total live time was 107.6 days corresponding to an exposure of 1.1 kg${\cdot}$days. Two events remained in the energy region of 50-60 keV which was consistent with 2.5 events of the expected background. A directional analysis was carried out and no significant forward-backward asymmetry derived from the WIMP-nucleus elastic scatterings was found. Thus a 90% confidence level upper limit on Spin-Dependent WIMP-proton cross section of 50 pb for a WIMP mass of 100 GeV/c2 was derived. This limit is the most stringent yet obtained from direction-sensitive dark matter search experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.09921v2-abstract-full').style.display = 'none'; document.getElementById('2101.09921v2-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 25 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog. Theor. Exp. Phys. 2021, 063F01 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.05157">arXiv:2005.05157</a> <span> [<a href="https://arxiv.org/pdf/2005.05157">pdf</a>, <a href="https://arxiv.org/format/2005.05157">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"> First limits from a 3d-vector directional dark matter search with the NEWAGE-0.3b' detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Yakabe%2C+R">Ryota Yakabe</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+K">Kiseki Nakamura</a>, <a href="/search/physics?searchtype=author&query=Ikeda%2C+T">Tomonori Ikeda</a>, <a href="/search/physics?searchtype=author&query=Ito%2C+H">Hiroshi Ito</a>, <a href="/search/physics?searchtype=author&query=Yamaguchi%2C+Y">Yushiro Yamaguchi</a>, <a href="/search/physics?searchtype=author&query=Taishaku%2C+R">Ryosuke Taishaku</a>, <a href="/search/physics?searchtype=author&query=Nakazawa%2C+M">Miki Nakazawa</a>, <a href="/search/physics?searchtype=author&query=Ishiura%2C+H">Hirohisa Ishiura</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+T">Takuma Nakamura</a>, <a href="/search/physics?searchtype=author&query=Shimada%2C+T">Takuya Shimada</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Sekiya%2C+H">Hiroyuki Sekiya</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Atsushi Takeda</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</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="2005.05157v2-abstract-short" style="display: inline;"> The first directional dark matter search with three-dimensional tracking with head-tail sensitivity (3d-vector tracking analysis) was performed with a gaseous three-dimensional tarcking detector, or the NEWAGE-0.3b' detector. The search was carried out from July 2013 to August 2017 (Run14 to Run18) at the Kamioka underground laboratory. The total livetime is 434.85 days corresponding to an exposur… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.05157v2-abstract-full').style.display = 'inline'; document.getElementById('2005.05157v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.05157v2-abstract-full" style="display: none;"> The first directional dark matter search with three-dimensional tracking with head-tail sensitivity (3d-vector tracking analysis) was performed with a gaseous three-dimensional tarcking detector, or the NEWAGE-0.3b' detector. The search was carried out from July 2013 to August 2017 (Run14 to Run18) at the Kamioka underground laboratory. The total livetime is 434.85 days corresponding to an exposure of 4.51 kg$\cdot$days. A 90 % confidence level upper limit on spin-dependent WIMP-proton cross section of $4.3 \times10^{2}$ pb for WIMPs with the mass of 150 GeV/$c^2$ is obtained. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.05157v2-abstract-full').style.display = 'none'; document.getElementById('2005.05157v2-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> 18 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 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/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/1809.02287">arXiv:1809.02287</a> <span> [<a href="https://arxiv.org/pdf/1809.02287">pdf</a>, <a href="https://arxiv.org/format/1809.02287">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.2018.08.042">10.1016/j.nima.2018.08.042 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance test of the MAIKo active target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Furuno%2C+T">T. Furuno</a>, <a href="/search/physics?searchtype=author&query=Kawabata%2C+T">T. Kawabata</a>, <a href="/search/physics?searchtype=author&query=Ong%2C+H+J">H. J. Ong</a>, <a href="/search/physics?searchtype=author&query=Adachi%2C+S">S. Adachi</a>, <a href="/search/physics?searchtype=author&query=Ayyad%2C+Y">Y. Ayyad</a>, <a href="/search/physics?searchtype=author&query=Baba%2C+T">T. Baba</a>, <a href="/search/physics?searchtype=author&query=Fujikawa%2C+Y">Y. Fujikawa</a>, <a href="/search/physics?searchtype=author&query=Hashimoto%2C+T">T. Hashimoto</a>, <a href="/search/physics?searchtype=author&query=Inaba%2C+K">K. Inaba</a>, <a href="/search/physics?searchtype=author&query=Ishii%2C+Y">Y. Ishii</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">S. Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Matsuda%2C+Y">Y. Matsuda</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+Y">Y. Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Mizumoto%2C+T">T. Mizumoto</a>, <a href="/search/physics?searchtype=author&query=Morimoto%2C+T">T. Morimoto</a>, <a href="/search/physics?searchtype=author&query=Murata%2C+M">M. Murata</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">T. Sawano</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+T">T. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">A. Takada</a>, <a href="/search/physics?searchtype=author&query=Tanaka%2C+J">J. Tanaka</a>, <a href="/search/physics?searchtype=author&query=Tanihata%2C+I">I. Tanihata</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">T. Tanimori</a>, <a href="/search/physics?searchtype=author&query=Tran%2C+D+T">D. T. Tran</a>, <a href="/search/physics?searchtype=author&query=Tsumura%2C+M">M. Tsumura</a> , et al. (1 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="1809.02287v1-abstract-short" style="display: inline;"> A new active target named MAIKo (Mu-PIC based Active target for Inverse Kinematics$_{\circ}$) has been developed at Kyoto University and Research Center for Nuclear Physics (RCNP), Osaka University. MAIKo is suited for missing-mass spectroscopy of unstable nuclei at forward scattering angles in inverse kinematics. MAIKo consists of a time projection chamber (TPC), which incorporates a micro-pixel… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.02287v1-abstract-full').style.display = 'inline'; document.getElementById('1809.02287v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.02287v1-abstract-full" style="display: none;"> A new active target named MAIKo (Mu-PIC based Active target for Inverse Kinematics$_{\circ}$) has been developed at Kyoto University and Research Center for Nuclear Physics (RCNP), Osaka University. MAIKo is suited for missing-mass spectroscopy of unstable nuclei at forward scattering angles in inverse kinematics. MAIKo consists of a time projection chamber (TPC), which incorporates a micro-pixel chamber ($渭$-PIC) as the electron multiplication and collection system. In MAIKo, the medium gas also plays the role of a reaction target, thus allowing detection of low-energy recoil particles with high position resolution. The MAIKo TPC was commissioned with He(93%)+iso-C$_{4}$H$_{10}$(7%) and He(93%)+CO$_{2}$(7%) mixture gasses at 430 hPa. The gas gain and the angular resolution of MAIKo were evaluated with an alpha source and a $^{4}$He beam at 56 MeV. The TPC was stably operated up to 1000-kcps beam intensity. A tracking algorithm using the Hough transform method has been developed to analyze scattering events. An angular resolution of 1.3$^{\circ}$ was achieved for scattered $^{4}$He particles. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.02287v1-abstract-full').style.display = 'none'; document.getElementById('1809.02287v1-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 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">13 pages, 17 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Instruments and Methods in Physics Research Section A 908, 215-224 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.07712">arXiv:1805.07712</a> <span> [<a href="https://arxiv.org/pdf/1805.07712">pdf</a>, <a href="https://arxiv.org/format/1805.07712">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/pty104">10.1093/ptep/pty104 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A new electron-multiplier-tube-based beam monitor for muon monitoring at the T2K experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ashida%2C+Y">Yosuke Ashida</a>, <a href="/search/physics?searchtype=author&query=Friend%2C+M">Megan Friend</a>, <a href="/search/physics?searchtype=author&query=Ichikawa%2C+A">Atsuko Ichikawa</a>, <a href="/search/physics?searchtype=author&query=Ishida%2C+T">Taku Ishida</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hajime Kubo</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+K">Keigo Nakamura</a>, <a href="/search/physics?searchtype=author&query=Sakashita%2C+K">Ken Sakashita</a>, <a href="/search/physics?searchtype=author&query=Uno%2C+W">Wataru Uno</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="1805.07712v5-abstract-short" style="display: inline;"> Muon beam monitoring is indispensable for indirectly monitoring accelerator-produced neutrino beams in real time. Though Si photodiodes and ionization chambers have been successfully used as muon monitors at the T2K experiment, sensors that are more radiation tolerant are desired for future operation. We have investigated the electron-multiplier tube (EMT) as a new sensor for muon monitoring. Seco… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.07712v5-abstract-full').style.display = 'inline'; document.getElementById('1805.07712v5-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.07712v5-abstract-full" style="display: none;"> Muon beam monitoring is indispensable for indirectly monitoring accelerator-produced neutrino beams in real time. Though Si photodiodes and ionization chambers have been successfully used as muon monitors at the T2K experiment, sensors that are more radiation tolerant are desired for future operation. We have investigated the electron-multiplier tube (EMT) as a new sensor for muon monitoring. Secondary electrons produced by the passage of muons at dynodes are multiplied in the tube and produce signal. Two prototype detectors were installed at the T2K muon monitor location, and various EMT properties were studied based on in situ data taken with the T2K muon beam. The signal size is as expected based on calculation, and the EMTs show a sufficiently fast time response for bunch-by-bunch beam monitoring. The spill-by-spill intensity resolution is 0.4%, better than the required value (1%). Signal linearity within $\pm$1% is achieved at proton beam powers up to 460 kW (with +250 kA focusing horn operation). A gradual signal decrease was observed during the initial exposure, due to the stabilization of dynode materials, before the response became stable within $\pm$1%. This work demonstrates that EMTs are a good candidate for future muon monitoring at T2K, and may also have other more general applications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.07712v5-abstract-full').style.display = 'none'; document.getElementById('1805.07712v5-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> 1 November, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">23 pages, 20 figures, 6 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Progress of Theoretical and Experimental Physics, Volume 2018, Issue 10, 1 October 2018, 103H01 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.10401">arXiv:1804.10401</a> <span> [<a href="https://arxiv.org/pdf/1804.10401">pdf</a>, <a href="https://arxiv.org/ps/1804.10401">ps</a>, <a href="https://arxiv.org/format/1804.10401">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 Methods for Astrophysics">astro-ph.IM</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.2018.03.034">10.1016/j.nima.2018.03.034 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Technique for Estimating the Absolute Gain of a Photomultiplier Tube </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Takahashi%2C+M">M. Takahashi</a>, <a href="/search/physics?searchtype=author&query=Inome%2C+Y">Y. Inome</a>, <a href="/search/physics?searchtype=author&query=Yoshii%2C+S">S. Yoshii</a>, <a href="/search/physics?searchtype=author&query=Bamba%2C+A">A. Bamba</a>, <a href="/search/physics?searchtype=author&query=Gunji%2C+S">S. Gunji</a>, <a href="/search/physics?searchtype=author&query=Hadasch%2C+D">D. Hadasch</a>, <a href="/search/physics?searchtype=author&query=Hayashida%2C+M">M. Hayashida</a>, <a href="/search/physics?searchtype=author&query=Katagiri%2C+H">H. Katagiri</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+Y">Y. Konno</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Kushida%2C+J">J. Kushida</a>, <a href="/search/physics?searchtype=author&query=Nakajima%2C+D">D. Nakajima</a>, <a href="/search/physics?searchtype=author&query=Nakamori%2C+T">T. Nakamori</a>, <a href="/search/physics?searchtype=author&query=Nagayoshi%2C+T">T. Nagayoshi</a>, <a href="/search/physics?searchtype=author&query=Nishijima%2C+K">K. Nishijima</a>, <a href="/search/physics?searchtype=author&query=Nozaki%2C+S">S. Nozaki</a>, <a href="/search/physics?searchtype=author&query=Mazin%2C+D">D. Mazin</a>, <a href="/search/physics?searchtype=author&query=Mashuda%2C+S">S. Mashuda</a>, <a href="/search/physics?searchtype=author&query=Mirzoyan%2C+R">R. Mirzoyan</a>, <a href="/search/physics?searchtype=author&query=Ohoka%2C+H">H. Ohoka</a>, <a href="/search/physics?searchtype=author&query=Orito%2C+R">R. Orito</a>, <a href="/search/physics?searchtype=author&query=Saito%2C+T">T. Saito</a>, <a href="/search/physics?searchtype=author&query=Sakurai%2C+S">S. Sakurai</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+J">J. Takeda</a>, <a href="/search/physics?searchtype=author&query=Teshima%2C+M">M. Teshima</a> , et al. (4 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="1804.10401v1-abstract-short" style="display: inline;"> Detection of low-intensity light relies on the conversion of photons to photoelectrons, which are then multiplied and detected as an electrical signal. To measure the actual intensity of the light, one must know the factor by which the photoelectrons have been multiplied. To obtain this amplification factor, we have developed a procedure for estimating precisely the signal caused by a single photo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.10401v1-abstract-full').style.display = 'inline'; document.getElementById('1804.10401v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.10401v1-abstract-full" style="display: none;"> Detection of low-intensity light relies on the conversion of photons to photoelectrons, which are then multiplied and detected as an electrical signal. To measure the actual intensity of the light, one must know the factor by which the photoelectrons have been multiplied. To obtain this amplification factor, we have developed a procedure for estimating precisely the signal caused by a single photoelectron. The method utilizes the fact that the photoelectrons conform to a Poisson distribution. The average signal produced by a single photoelectron can then be estimated from the number of noise events, without requiring analysis of the distribution of the signal produced by a single photoelectron. The signal produced by one or more photoelectrons can be estimated experimentally without any assumptions. This technique, and an example of the analysis of a signal from a photomultiplier tube, are described in this study. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.10401v1-abstract-full').style.display = 'none'; document.getElementById('1804.10401v1-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 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">18 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instrum. Methods Phys. Res. A 894 (2018) 1-7 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1702.01483">arXiv:1702.01483</a> <span> [<a href="https://arxiv.org/pdf/1702.01483">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/10.1038/srep41511">10.1038/srep41511 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Establishment of Imaging Spectroscopy of Nuclear Gamma-Rays based on Geometrical Optics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Mizumura%2C+Y">Yoshitaka Mizumura</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Miyamoto%2C+S">Shohei Miyamoto</a>, <a href="/search/physics?searchtype=author&query=Takemura%2C+T">Taito Takemura</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+T">Tetsuro Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Komura%2C+S">Shotaro Komura</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">Shunsuke Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+Y">Yoshihiro Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Mizumoto%2C+T">Tetsuya Mizumoto</a>, <a href="/search/physics?searchtype=author&query=Nakamasu%2C+Y">Yuma Nakamasu</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+K">Kiseki Nakamura</a>, <a href="/search/physics?searchtype=author&query=Parker%2C+J+D">Joseph D. Parker</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">Tatsuya Sawano</a>, <a href="/search/physics?searchtype=author&query=Sonoda%2C+S">Shinya Sonoda</a>, <a href="/search/physics?searchtype=author&query=Tomono%2C+D">Dai Tomono</a>, <a href="/search/physics?searchtype=author&query=Yoshikawa%2C+K">Kei Yoshikawa</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="1702.01483v1-abstract-short" style="display: inline;"> Since the discovery of nuclear gamma-rays, its imaging has been limited to pseudo imaging, such as Compton Camera (CC) and coded mask. Pseudo imaging does not keep physical information (intensity, or brightness in Optics) along a ray, and thus is capable of no more than qualitative imaging of bright objects. To attain quantitative imaging, cameras that realize geometrical optics is essential, whic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1702.01483v1-abstract-full').style.display = 'inline'; document.getElementById('1702.01483v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1702.01483v1-abstract-full" style="display: none;"> Since the discovery of nuclear gamma-rays, its imaging has been limited to pseudo imaging, such as Compton Camera (CC) and coded mask. Pseudo imaging does not keep physical information (intensity, or brightness in Optics) along a ray, and thus is capable of no more than qualitative imaging of bright objects. To attain quantitative imaging, cameras that realize geometrical optics is essential, which would be, for nuclear MeV gammas, only possible via complete reconstruction of the Compton process. Recently we have revealed that "Electron Tracking Compton Camera" (ETCC) provides a well-defined Point Spread Function (PSF). The information of an incoming gamma is kept along a ray with the PSF and that is equivalent to geometrical optics. Here we present an imaging-spectroscopic measurement with the ETCC. Our results highlight the intrinsic difficulty with CCs in performing accurate imaging, and show that the ETCC surmounts this problem. The imaging capability also helps the ETCC suppress the noise level dramatically by ~3 orders of magnitude without a shielding structure. Furthermore, full reconstruction of Compton process with the ETCC provides spectra free of Compton edges. These results mark the first proper imaging of nuclear gammas based on the genuine geometrical optics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1702.01483v1-abstract-full').style.display = 'none'; document.getElementById('1702.01483v1-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, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">22 pages, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Scientific Reports 7, 41511 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.02396">arXiv:1610.02396</a> <span> [<a href="https://arxiv.org/pdf/1610.02396">pdf</a>, <a href="https://arxiv.org/format/1610.02396">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="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</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.physrep.2016.10.001">10.1016/j.physrep.2016.10.001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Readout technologies for directional WIMP Dark Matter detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Battat%2C+J+B+R">J. B. R. Battat</a>, <a href="/search/physics?searchtype=author&query=Irastorza%2C+I+G">I. G. Irastorza</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Guler%2C+M+A">M. Ali Guler</a>, <a href="/search/physics?searchtype=author&query=Asada%2C+T">T. Asada</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Billard%2C+J">J. Billard</a>, <a href="/search/physics?searchtype=author&query=Bosson%2C+G">G. Bosson</a>, <a href="/search/physics?searchtype=author&query=Bourrion%2C+O">O. Bourrion</a>, <a href="/search/physics?searchtype=author&query=Bouvier%2C+J">J. Bouvier</a>, <a href="/search/physics?searchtype=author&query=Buonaura%2C+A">A. Buonaura</a>, <a href="/search/physics?searchtype=author&query=Burdge%2C+K">K. Burdge</a>, <a href="/search/physics?searchtype=author&query=Cebrian%2C+S">S. Cebrian</a>, <a href="/search/physics?searchtype=author&query=Colas%2C+P">P. Colas</a>, <a href="/search/physics?searchtype=author&query=Consiglio%2C+L">L. Consiglio</a>, <a href="/search/physics?searchtype=author&query=Dafni%2C+T">T. Dafni</a>, <a href="/search/physics?searchtype=author&query=D%27Ambrosio%2C+N">N. D'Ambrosio</a>, <a href="/search/physics?searchtype=author&query=Deaconu%2C+C">C. Deaconu</a>, <a href="/search/physics?searchtype=author&query=De+Lellis%2C+G">G. De Lellis</a>, <a href="/search/physics?searchtype=author&query=Descombes%2C+T">T. Descombes</a>, <a href="/search/physics?searchtype=author&query=Di+Crescenzo%2C+A">A. Di Crescenzo</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+N">N. Di Marco</a>, <a href="/search/physics?searchtype=author&query=Druitt%2C+G">G. Druitt</a>, <a href="/search/physics?searchtype=author&query=Eggleston%2C+R">R. Eggleston</a>, <a href="/search/physics?searchtype=author&query=Ferrer-Ribas%2C+E">E. Ferrer-Ribas</a> , et al. (68 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="1610.02396v1-abstract-short" style="display: inline;"> The measurement of the direction of WIMP-induced nuclear recoils is a compelling but technologically challenging strategy to provide an unambiguous signature of the detection of Galactic dark matter. Most directional detectors aim to reconstruct the dark-matter-induced nuclear recoil tracks, either in gas or solid targets. The main challenge with directional detection is the need for high spatial… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02396v1-abstract-full').style.display = 'inline'; document.getElementById('1610.02396v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.02396v1-abstract-full" style="display: none;"> The measurement of the direction of WIMP-induced nuclear recoils is a compelling but technologically challenging strategy to provide an unambiguous signature of the detection of Galactic dark matter. Most directional detectors aim to reconstruct the dark-matter-induced nuclear recoil tracks, either in gas or solid targets. The main challenge with directional detection is the need for high spatial resolution over large volumes, which puts strong requirements on the readout technologies. In this paper we review the various detector readout technologies used by directional detectors. In particular, we summarize the challenges, advantages and drawbacks of each approach, and discuss future prospects for these technologies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02396v1-abstract-full').style.display = 'none'; document.getElementById('1610.02396v1-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 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">58 pages, 26 figures, accepted by Physics Reports</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Reports 662 (2016) pp. 1-46 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.01814">arXiv:1610.01814</a> <span> [<a href="https://arxiv.org/pdf/1610.01814">pdf</a>, <a href="https://arxiv.org/ps/1610.01814">ps</a>, <a href="https://arxiv.org/format/1610.01814">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="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/10.1088/1748-0221/11/11/P11009">10.1088/1748-0221/11/11/P11009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Very High-Energy Gamma-Ray Follow-Up Program Using Neutrino Triggers from IceCube </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=IceCube+Collaboration"> IceCube Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aartsen%2C+M+G">M. G. Aartsen</a>, <a href="/search/physics?searchtype=author&query=Abraham%2C+K">K. Abraham</a>, <a href="/search/physics?searchtype=author&query=Ackermann%2C+M">M. Ackermann</a>, <a href="/search/physics?searchtype=author&query=Adams%2C+J">J. Adams</a>, <a href="/search/physics?searchtype=author&query=Aguilar%2C+J+A">J. A. Aguilar</a>, <a href="/search/physics?searchtype=author&query=Ahlers%2C+M">M. Ahlers</a>, <a href="/search/physics?searchtype=author&query=Ahrens%2C+M">M. Ahrens</a>, <a href="/search/physics?searchtype=author&query=Altmann%2C+D">D. Altmann</a>, <a href="/search/physics?searchtype=author&query=Andeen%2C+K">K. Andeen</a>, <a href="/search/physics?searchtype=author&query=Anderson%2C+T">T. Anderson</a>, <a href="/search/physics?searchtype=author&query=Ansseau%2C+I">I. Ansseau</a>, <a href="/search/physics?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/physics?searchtype=author&query=Archinger%2C+M">M. Archinger</a>, <a href="/search/physics?searchtype=author&query=Arguelles%2C+C">C. Arguelles</a>, <a href="/search/physics?searchtype=author&query=Auffenberg%2C+J">J. Auffenberg</a>, <a href="/search/physics?searchtype=author&query=Axani%2C+S">S. Axani</a>, <a href="/search/physics?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/physics?searchtype=author&query=Barwick%2C+S+W">S. W. Barwick</a>, <a href="/search/physics?searchtype=author&query=Baum%2C+V">V. Baum</a>, <a href="/search/physics?searchtype=author&query=Bay%2C+R">R. Bay</a>, <a href="/search/physics?searchtype=author&query=Beatty%2C+J+J">J. J. Beatty</a>, <a href="/search/physics?searchtype=author&query=Becker-Tjus%2C+J">J. Becker-Tjus</a>, <a href="/search/physics?searchtype=author&query=Becker%2C+K+-">K. -H. Becker</a>, <a href="/search/physics?searchtype=author&query=BenZvi%2C+S">S. BenZvi</a> , et al. (519 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="1610.01814v3-abstract-short" style="display: inline;"> We describe and report the status of a neutrino-triggered program in IceCube that generates real-time alerts for gamma-ray follow-up observations by atmospheric-Cherenkov telescopes (MAGIC and VERITAS). While IceCube is capable of monitoring the whole sky continuously, high-energy gamma-ray telescopes have restricted fields of view and in general are unlikely to be observing a potential neutrino-f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.01814v3-abstract-full').style.display = 'inline'; document.getElementById('1610.01814v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.01814v3-abstract-full" style="display: none;"> We describe and report the status of a neutrino-triggered program in IceCube that generates real-time alerts for gamma-ray follow-up observations by atmospheric-Cherenkov telescopes (MAGIC and VERITAS). While IceCube is capable of monitoring the whole sky continuously, high-energy gamma-ray telescopes have restricted fields of view and in general are unlikely to be observing a potential neutrino-flaring source at the time such neutrinos are recorded. The use of neutrino-triggered alerts thus aims at increasing the availability of simultaneous multi-messenger data during potential neutrino flaring activity, which can increase the discovery potential and constrain the phenomenological interpretation of the high-energy emission of selected source classes (e.g. blazars). The requirements of a fast and stable online analysis of potential neutrino signals and its operation are presented, along with first results of the program operating between 14 March 2012 and 31 December 2015. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.01814v3-abstract-full').style.display = 'none'; document.getElementById('1610.01814v3-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> 12 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">accepted for publication in JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2016 JINST 11 P11009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.06774">arXiv:1603.06774</a> <span> [<a href="https://arxiv.org/pdf/1603.06774">pdf</a>, <a href="https://arxiv.org/format/1603.06774">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/s10052-016-4440-y">10.1140/epjc/s10052-016-4440-y <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of $蟺^{\pm}$ differential yields from the surface of the T2K replica target for incoming 31 GeV/c protons with the NA61/SHINE spectrometer at the CERN SPS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Collaboration%2C+N">NA61/SHINE Collaboration</a>, <a href="/search/physics?searchtype=author&query=%3A"> :</a>, <a href="/search/physics?searchtype=author&query=Abgrall%2C+N">N. Abgrall</a>, <a href="/search/physics?searchtype=author&query=Aduszkiewicz%2C+A">A. Aduszkiewicz</a>, <a href="/search/physics?searchtype=author&query=Ajaz%2C+M">M. Ajaz</a>, <a href="/search/physics?searchtype=author&query=Ali%2C+Y">Y. Ali</a>, <a href="/search/physics?searchtype=author&query=Andronov%2C+E">E. Andronov</a>, <a href="/search/physics?searchtype=author&query=Anti%C4%87i%C4%87%2C+T">T. Anti膰i膰</a>, <a href="/search/physics?searchtype=author&query=Antoniou%2C+N">N. Antoniou</a>, <a href="/search/physics?searchtype=author&query=Baatar%2C+B">B. Baatar</a>, <a href="/search/physics?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Bl%C3%BCmer%2C+J">J. Bl眉mer</a>, <a href="/search/physics?searchtype=author&query=Bogomilov%2C+M">M. Bogomilov</a>, <a href="/search/physics?searchtype=author&query=Brandin%2C+A">A. Brandin</a>, <a href="/search/physics?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/physics?searchtype=author&query=Brzychczyk%2C+J">J. Brzychczyk</a>, <a href="/search/physics?searchtype=author&query=Bunyatov%2C+S+A">S. A. Bunyatov</a>, <a href="/search/physics?searchtype=author&query=Busygina%2C+O">O. Busygina</a>, <a href="/search/physics?searchtype=author&query=Christakoglou%2C+P">P. Christakoglou</a>, <a href="/search/physics?searchtype=author&query=%C4%86irkovi%C4%87%2C+M">M. 膯irkovi膰</a>, <a href="/search/physics?searchtype=author&query=Czopowicz%2C+T">T. Czopowicz</a>, <a href="/search/physics?searchtype=author&query=Davis%2C+N">N. Davis</a>, <a href="/search/physics?searchtype=author&query=Debieux%2C+S">S. Debieux</a>, <a href="/search/physics?searchtype=author&query=Dembinski%2C+H">H. Dembinski</a> , et al. (135 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="1603.06774v2-abstract-short" style="display: inline;"> Measurements of particle emission from a replica of the T2K 90 cm-long carbon target were performed in the NA61/SHINE experiment at CERN SPS, using data collected during a high-statistics run in 2009. An efficient use of the long-target measurements for neutrino flux predictions in T2K requires dedicated reconstruction and analysis techniques. Fully-corrected differential yields of $蟺^\pm$-mesons… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.06774v2-abstract-full').style.display = 'inline'; document.getElementById('1603.06774v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.06774v2-abstract-full" style="display: none;"> Measurements of particle emission from a replica of the T2K 90 cm-long carbon target were performed in the NA61/SHINE experiment at CERN SPS, using data collected during a high-statistics run in 2009. An efficient use of the long-target measurements for neutrino flux predictions in T2K requires dedicated reconstruction and analysis techniques. Fully-corrected differential yields of $蟺^\pm$-mesons from the surface of the T2K replica target for incoming 31 GeV/c protons are presented. A possible strategy to implement these results into the T2K neutrino beam predictions is discussed and the propagation of the uncertainties of these results to the final neutrino flux is performed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.06774v2-abstract-full').style.display = 'none'; document.getElementById('1603.06774v2-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 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2016-057 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C (2016) 76: 617 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.01287">arXiv:1508.01287</a> <span> [<a href="https://arxiv.org/pdf/1508.01287">pdf</a>, <a href="https://arxiv.org/ps/1508.01287">ps</a>, <a href="https://arxiv.org/format/1508.01287">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/10.1088/1748-0221/10/06/C06003">10.1088/1748-0221/10/06/C06003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A performance study of an electron-tracking Compton camera with a compact system for environmental gamma-ray observation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Mizumoto%2C+T">Tetsuya Mizumoto</a>, <a href="/search/physics?searchtype=author&query=Tomono%2C+D">Dai Tomono</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Komura%2C+S">Shotaro Komura</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+Y">Yoshihiro Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Mizumura%2C+Y">Yoshitaka Mizumura</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+K">Kiseki Nakamura</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+S">Shogo Nakamura</a>, <a href="/search/physics?searchtype=author&query=Oda%2C+M">Makoto Oda</a>, <a href="/search/physics?searchtype=author&query=Parker%2C+J+D">Joseph D. Parker</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">Tatsuya Sawano</a>, <a href="/search/physics?searchtype=author&query=Bando%2C+N">Naoto Bando</a>, <a href="/search/physics?searchtype=author&query=Nabetani%2C+A">Akira Nabetani</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="1508.01287v1-abstract-short" style="display: inline;"> An electron-tracking Compton camera (ETCC) is a detector that can determine the arrival direction and energy of incident sub-MeV/MeV gamma-ray events on an event-by-event basis. It is a hybrid detector consisting of a gaseous time projection chamber (TPC), that is the Compton-scattering target and the tracker of recoil electrons, and a position-sensitive scintillation camera that absorbs of the sc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.01287v1-abstract-full').style.display = 'inline'; document.getElementById('1508.01287v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.01287v1-abstract-full" style="display: none;"> An electron-tracking Compton camera (ETCC) is a detector that can determine the arrival direction and energy of incident sub-MeV/MeV gamma-ray events on an event-by-event basis. It is a hybrid detector consisting of a gaseous time projection chamber (TPC), that is the Compton-scattering target and the tracker of recoil electrons, and a position-sensitive scintillation camera that absorbs of the scattered gamma rays, to measure gamma rays in the environment from contaminated soil. To measure of environmental gamma rays from soil contaminated with radioactive cesium (Cs), we developed a portable battery-powered ETCC system with a compact readout circuit and data-acquisition system for the SMILE-II experiment. We checked the gamma-ray imaging ability and ETCC performance in the laboratory by using several gamma-ray point sources. The performance test indicates that the field of view (FoV) of the detector is about 1$\;$sr and that the detection efficiency and angular resolution for 662$\;$keV gamma rays from the center of the FoV is $(9.31 \pm 0.95) \times 10^{^-5}$ and $5.9^{\circ} \pm 0.6^{\circ}$, respectively. Furthermore, the ETCC can detect 0.15$\;渭\rm{Sv/h}$ from a $^{137}$Cs gamma-ray source with a significance of 5$蟽$ in 13 min in the laboratory. In this paper, we report the specifications of the ETCC and the results of the performance tests. Furthermore, we discuss its potential use for environmental gamma-ray measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.01287v1-abstract-full').style.display = 'none'; document.getElementById('1508.01287v1-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 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">10 pages, 7 figures, proceeding of the 10th International Conference on Position Sensitive Detectors (PSD10)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 10 (2015) C06003 </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/1412.3918">arXiv:1412.3918</a> <span> [<a href="https://arxiv.org/pdf/1412.3918">pdf</a>, <a href="https://arxiv.org/ps/1412.3918">ps</a>, <a href="https://arxiv.org/format/1412.3918">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 Methods for Astrophysics">astro-ph.IM</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> <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/10.1088/1748-0221/10/01/C01053">10.1088/1748-0221/10/01/C01053 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of a new electron-tracking Compton camera under intense radiations from a water target irradiated with a proton beam </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Matsuoka%2C+Y">Yoshihiro Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">T. Tanimori</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">A. Takada</a>, <a href="/search/physics?searchtype=author&query=Parker%2C+J+D">J. D. Parker</a>, <a href="/search/physics?searchtype=author&query=Mizumoto%2C+T">T. Mizumoto</a>, <a href="/search/physics?searchtype=author&query=Mizumura%2C+Y">Y. Mizumura</a>, <a href="/search/physics?searchtype=author&query=Iwaki%2C+S">S. Iwaki</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">T. Sawano</a>, <a href="/search/physics?searchtype=author&query=Komura%2C+S">S. Komura</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+T">T. Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Oda%2C+M">M. Oda</a>, <a href="/search/physics?searchtype=author&query=Takemura%2C+T">T. Takemura</a>, <a href="/search/physics?searchtype=author&query=Miyamoto%2C+S">S. Miyamoto</a>, <a href="/search/physics?searchtype=author&query=Sonoda%2C+S">S. Sonoda</a>, <a href="/search/physics?searchtype=author&query=Tomono%2C+D">D. Tomono</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">K. Miuchi</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">S. Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">S. Kurosawa</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="1412.3918v2-abstract-short" style="display: inline;"> We have developed an electron-tracking Compton camera (ETCC) for use in next-generation MeV gamma ray telescopes. An ETCC consists of a gaseous time projection chamber (TPC) and pixel scintillator arrays (PSAs). Since the TPC measures the three dimensional tracks of Compton-recoil electrons, the ETCC can completely reconstruct the incident gamma rays. Moreover, the ETCC demonstrates efficient back… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.3918v2-abstract-full').style.display = 'inline'; document.getElementById('1412.3918v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.3918v2-abstract-full" style="display: none;"> We have developed an electron-tracking Compton camera (ETCC) for use in next-generation MeV gamma ray telescopes. An ETCC consists of a gaseous time projection chamber (TPC) and pixel scintillator arrays (PSAs). Since the TPC measures the three dimensional tracks of Compton-recoil electrons, the ETCC can completely reconstruct the incident gamma rays. Moreover, the ETCC demonstrates efficient background rejection power in Compton-kinematics tests, identifies particle from the energy deposit rate (dE/dX) registered in the TPC, and provides high quality imaging by completely reconstructing the Compton scattering process. We are planning the "Sub-MeV gamma ray Imaging Loaded-on-balloon Experiment" (SMILE) for our proposed all-sky survey satellite. Performance tests of a mid-sized 30 cm-cubic ETCC, constructed for observing the Crab nebula, are ongoing. However, observations at balloon altitudes or satellite orbits are obstructed by radiation background from the atmosphere and the detector itself. The background rejection power was checked using proton accelerator experiments conducted at the Research Center for Nuclear Physics, Osaka University. To create the intense radiation fields encountered in space, which comprise gamma rays, neutrons, protons, and other energetic entities, we irradiated a water target with a 140 MeV proton beam and placed a SMILE-II ETCC near the target. In this situation, the counting rate was five times than that expected at the balloon altitude. Nonetheless, the ETCC stably operated and identified particles sufficiently to obtain a clear gamma ray image of the checking source. Here, we report the performance of our detector and demonstrate its effective background rejection based in electron tracking experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.3918v2-abstract-full').style.display = 'none'; document.getElementById('1412.3918v2-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, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">10 pages, 8figures, http://www-cr.scphys.kyoto-u.ac.jp/research/MeV-gamma/wiki/wiki.cgi , PSD10</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/1312.0438">arXiv:1312.0438</a> <span> [<a href="https://arxiv.org/pdf/1312.0438">pdf</a>, <a href="https://arxiv.org/format/1312.0438">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 Methods for Astrophysics">astro-ph.IM</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/10.1088/1748-0221/9/05/C05045">10.1088/1748-0221/9/05/C05045 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development of a 30 cm-cube Electron-Tracking Compton Camera for the SMILE-II Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Mizumura%2C+Y">Y. Mizumura</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">T. Tanimori</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">A. Takada</a>, <a href="/search/physics?searchtype=author&query=Parker%2C+J+D">J. D. Parker</a>, <a href="/search/physics?searchtype=author&query=Mizumoto%2C+T">T. Mizumoto</a>, <a href="/search/physics?searchtype=author&query=Sonoda%2C+S">S. Sonoda</a>, <a href="/search/physics?searchtype=author&query=Tomono%2C+D">D. Tomono</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">T. Sawano</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+K">K. Nakamura</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+Y">Y. Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Komura%2C+S">S. Komura</a>, <a href="/search/physics?searchtype=author&query=Nakamura%2C+S">S. Nakamura</a>, <a href="/search/physics?searchtype=author&query=Oda%2C+M">M. Oda</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">K. Miuchi</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">S. Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">S. Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Iwaki%2C+S">S. Iwaki</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="1312.0438v2-abstract-short" style="display: inline;"> To explore the sub-MeV/MeV gamma-ray window for astronomy, we have developed the Electron-Tracking Compton Camera (ETCC), and carried out the first performance test at room condition using several gamma-ray sources in the sub-MeV energy band. Using a simple track analysis for a quick first test of the performance, the gamma-ray imaging capability was demonstrated by clear images and 5.3 degrees of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.0438v2-abstract-full').style.display = 'inline'; document.getElementById('1312.0438v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.0438v2-abstract-full" style="display: none;"> To explore the sub-MeV/MeV gamma-ray window for astronomy, we have developed the Electron-Tracking Compton Camera (ETCC), and carried out the first performance test at room condition using several gamma-ray sources in the sub-MeV energy band. Using a simple track analysis for a quick first test of the performance, the gamma-ray imaging capability was demonstrated by clear images and 5.3 degrees of angular resolution measure (ARM) measured at 662 keV. As the greatest impact of this work, a gamma-ray detection efficiency on the order of $10^{-4}$ was achieved at the sub-MeV gamma-ray band, which is one order of magnitude higher than our previous experiment. This angular resolution and detection efficiency enables us to detect the Crab Nebula at the 5 sigma level with several hours observation at balloon altitude in middle latitude. Furthermore, good consistency of efficiencies between this performance test and simulation including only physical processes has a large importance; it means we achieve nearly 100% detection of Compton recoil electrons. Thus, our estimation of enhancements by upgrades of the detector is more dependable. We are planning to confirm the imaging capability of the ETCC by observation of celestial objects in the SMILE-II (Sub-MeV gamma ray Imaging Loaded-on-balloon Experiment II). The SMILE-II and following SMILE-III project will be an important key of sub-MeV/MeV gamma-ray astronomy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.0438v2-abstract-full').style.display = 'none'; document.getElementById('1312.0438v2-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 February, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">9 pages, 7 figures, Proceedings of the 15th International Workshop on Radiation Imaging Detectors (iWoRiD 2013)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST, 9, C05045, (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.3386">arXiv:1307.3386</a> <span> [<a href="https://arxiv.org/pdf/1307.3386">pdf</a>, <a href="https://arxiv.org/ps/1307.3386">ps</a>, <a href="https://arxiv.org/format/1307.3386">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 Methods for Astrophysics">astro-ph.IM</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"> Development of the Photomultiplier-Tube Readout System for the CTA Large Size Telescope </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+R">R. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Awane%2C+Y">Y. Awane</a>, <a href="/search/physics?searchtype=author&query=Bamba%2C+A">A. Bamba</a>, <a href="/search/physics?searchtype=author&query=Barcelo%2C+M">M. Barcelo</a>, <a href="/search/physics?searchtype=author&query=Barrio%2C+J+A">J. A. Barrio</a>, <a href="/search/physics?searchtype=author&query=Blanch%2C+O">O. Blanch</a>, <a href="/search/physics?searchtype=author&query=Boix%2C+J">J. Boix</a>, <a href="/search/physics?searchtype=author&query=Delgado%2C+C">C. Delgado</a>, <a href="/search/physics?searchtype=author&query=Fink%2C+D">D. Fink</a>, <a href="/search/physics?searchtype=author&query=Gascon%2C+D">D. Gascon</a>, <a href="/search/physics?searchtype=author&query=Gunji%2C+S">S. Gunji</a>, <a href="/search/physics?searchtype=author&query=Hagiwara%2C+R">R. Hagiwara</a>, <a href="/search/physics?searchtype=author&query=Hanabata%2C+Y">Y. Hanabata</a>, <a href="/search/physics?searchtype=author&query=Hatanaka%2C+K">K. Hatanaka</a>, <a href="/search/physics?searchtype=author&query=Hayashida%2C+M">M. Hayashida</a>, <a href="/search/physics?searchtype=author&query=Ikeno%2C+M">M. Ikeno</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">S. Kabuki</a>, <a href="/search/physics?searchtype=author&query=Katagiri%2C+H">H. Katagiri</a>, <a href="/search/physics?searchtype=author&query=Kataoka%2C+J">J. Kataoka</a>, <a href="/search/physics?searchtype=author&query=Konno%2C+Y">Y. Konno</a>, <a href="/search/physics?searchtype=author&query=Koyama%2C+S">S. Koyama</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+T">T. Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Kushida%2C+J">J. Kushida</a>, <a href="/search/physics?searchtype=author&query=Martinez%2C+G">G. Martinez</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="1307.3386v1-abstract-short" style="display: inline;"> We have developed a prototype of the photomultiplier tube (PMT) readout system for the Cherenkov Telescope Array (CTA) Large Size Telescope (LST). Two thousand PMTs along with their readout systems are arranged on the focal plane of each telescope, with one readout system per 7-PMT cluster. The Cherenkov light pulses generated by the air showers are detected by the PMTs and amplified in a compact,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.3386v1-abstract-full').style.display = 'inline'; document.getElementById('1307.3386v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.3386v1-abstract-full" style="display: none;"> We have developed a prototype of the photomultiplier tube (PMT) readout system for the Cherenkov Telescope Array (CTA) Large Size Telescope (LST). Two thousand PMTs along with their readout systems are arranged on the focal plane of each telescope, with one readout system per 7-PMT cluster. The Cherenkov light pulses generated by the air showers are detected by the PMTs and amplified in a compact, low noise and wide dynamic range gain block. The output of this block is then digitized at a sampling rate of the order of GHz using the Domino Ring Sampler DRS4, an analog memory ASIC developed at Paul Scherrer Institute. The sampler has 1,024 capacitors per channel and four channels are cascaded for increased depth. After a trigger is generated in the system, the charges stored in the capacitors are digitized by an external slow sampling ADC and then transmitted via Gigabit Ethernet. An onboard FPGA controls the DRS4, trigger threshold, and Ethernet transfer. In addition, the control and monitoring of the Cockcroft-Walton circuit that provides high voltage for the 7-PMT cluster are performed by the same FPGA. A prototype named Dragon has been developed that has successfully sampled PMT signals at a rate of 2 GHz, and generated single photoelectron spectra. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.3386v1-abstract-full').style.display = 'none'; document.getElementById('1307.3386v1-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> 12 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">In Proceedings of the 33rd International Cosmic Ray Conference (ICRC2013), Rio de Janeiro (Brazil). All CTA contributions at arXiv:1307.2232</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.0162">arXiv:1307.0162</a> <span> [<a href="https://arxiv.org/pdf/1307.0162">pdf</a>, <a href="https://arxiv.org/format/1307.0162">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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.2013.11.081">10.1016/j.nima.2013.11.081 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Calibration of the Super-Kamiokande 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=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/physics?searchtype=author&query=Iida%2C+T">T. Iida</a>, <a href="/search/physics?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/physics?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Koshio%2C+Y">Y. Koshio</a>, <a href="/search/physics?searchtype=author&query=Marti%2C+L">Ll. Marti</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=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/physics?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/physics?searchtype=author&query=Obayashi%2C+Y">Y. Obayashi</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=Takenaga%2C+Y">Y. Takenaga</a>, <a href="/search/physics?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a>, <a href="/search/physics?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+K">K. Ueno</a>, <a href="/search/physics?searchtype=author&query=Wendell%2C+R+A">R. A. Wendell</a>, <a href="/search/physics?searchtype=author&query=Yokozawa%2C+T">T. Yokozawa</a>, <a href="/search/physics?searchtype=author&query=Irvine%2C+T+J">T. J. Irvine</a> , et al. (108 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="1307.0162v2-abstract-short" style="display: inline;"> Procedures and results on hardware level detector calibration in Super-Kamiokande (SK) are presented in this paper. In particular, we report improvements made in our calibration methods for the experimental phase IV in which new readout electronics have been operating since 2008. The topics are separated into two parts. The first part describes the determination of constants needed to interpret th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.0162v2-abstract-full').style.display = 'inline'; document.getElementById('1307.0162v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.0162v2-abstract-full" style="display: none;"> Procedures and results on hardware level detector calibration in Super-Kamiokande (SK) are presented in this paper. In particular, we report improvements made in our calibration methods for the experimental phase IV in which new readout electronics have been operating since 2008. The topics are separated into two parts. The first part describes the determination of constants needed to interpret the digitized output of our electronics so that we can obtain physical numbers such as photon counts and their arrival times for each photomultiplier tube (PMT). In this context, we developed an in-situ procedure to determine high-voltage settings for PMTs in large detectors like SK, as well as a new method for measuring PMT quantum efficiency and gain in such a detector. The second part describes the modeling of the detector in our Monte Carlo simulation, including in particular the optical properties of its water target and their variability over time. Detailed studies on the water quality are also presented. As a result of this work, we achieved a precision sufficient for physics analysis over a wide energy range (from a few MeV to above a TeV). For example, the charge determination was understood at the 1% level, and the timing resolution was 2.1 nsec at the one-photoelectron charge level and 0.5 nsec at the 100-photoelectron charge level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.0162v2-abstract-full').style.display = 'none'; document.getElementById('1307.0162v2-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> 20 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 June, 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">75 pages, 35 figures</span> </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 737C (2014), pp. 253-272 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1305.4701">arXiv:1305.4701</a> <span> [<a href="https://arxiv.org/pdf/1305.4701">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</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> <p class="title is-5 mathjax"> Development of a Time-resolved Neutron Imaging Detector Based on the 渭PIC Micro-Pixel Chamber </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Parker%2C+J+D">Joseph D Parker</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">Masahide Harada</a>, <a href="/search/physics?searchtype=author&query=Hattori%2C+K">Kaori Hattori</a>, <a href="/search/physics?searchtype=author&query=Iwaki%2C+S">Satoru Iwaki</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">Shigeto Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+Y">Yuji Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">Shunsuke Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+Y">Yoshihiro Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Mizumoto%2C+T">Tetsuya Mizumoto</a>, <a href="/search/physics?searchtype=author&query=Nishimura%2C+H">Hironobu Nishimura</a>, <a href="/search/physics?searchtype=author&query=Oku%2C+T">Takayuki Oku</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">Tatsuya Sawano</a>, <a href="/search/physics?searchtype=author&query=Shinohara%2C+T">Takenao Shinohara</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+J">Jun-ichi Suzuki</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+K">Kazuki Ueno</a>, <a href="/search/physics?searchtype=author&query=Ikeno%2C+M">Masahiro Ikeno</a>, <a href="/search/physics?searchtype=author&query=Tanaka%2C+M">Manobu Tanaka</a>, <a href="/search/physics?searchtype=author&query=Uchida%2C+T">Tomohisa Uchida</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="1305.4701v1-abstract-short" style="display: inline;"> We have developed a prototype time-resolved neutron imaging detector employing a micro-pattern gaseous detector known as the micro-pixel chamber (渭PIC) coupled with a field-programmable-gate-array-based data acquisition system. Our detector system combines 100渭m-level spatial and sub-渭s time resolutions with a low gamma sensitivity of less than 10^-12 and high data rates, making it well suited for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.4701v1-abstract-full').style.display = 'inline'; document.getElementById('1305.4701v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1305.4701v1-abstract-full" style="display: none;"> We have developed a prototype time-resolved neutron imaging detector employing a micro-pattern gaseous detector known as the micro-pixel chamber (渭PIC) coupled with a field-programmable-gate-array-based data acquisition system. Our detector system combines 100渭m-level spatial and sub-渭s time resolutions with a low gamma sensitivity of less than 10^-12 and high data rates, making it well suited for applications in neutron radiography at high-intensity, pulsed neutron sources. In the present paper, we introduce the detector system and present several test measurements performed at NOBORU (BL10), J-PARC to demonstrate the capabilities of our prototype. We also discuss future improvements to the spatial resolution and rate performance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.4701v1-abstract-full').style.display = 'none'; document.getElementById('1305.4701v1-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> 20 May, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">5 pages, 7 figures, submitted to Hamon - Journal of the Japan Society for Neutron Science</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1305.3687">arXiv:1305.3687</a> <span> [<a href="https://arxiv.org/pdf/1305.3687">pdf</a>, <a href="https://arxiv.org/ps/1305.3687">ps</a>, <a href="https://arxiv.org/format/1305.3687">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="Materials Science">cond-mat.mtrl-sci</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.2013.06.001">10.1016/j.nima.2013.06.001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spatial resolution of a 渭PIC-based neutron imaging detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Parker%2C+J+D">Joseph D. Parker</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">Masahide Harada</a>, <a href="/search/physics?searchtype=author&query=Hattori%2C+K">Kaori Hattori</a>, <a href="/search/physics?searchtype=author&query=Iwaki%2C+S">Satoru Iwaki</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">Shigeto Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+Y">Yuji Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">Shunsuke Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+Y">Yoshihiro Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Mizumoto%2C+T">Tetsuya Mizumoto</a>, <a href="/search/physics?searchtype=author&query=Nishimura%2C+H">Hironobu Nishimura</a>, <a href="/search/physics?searchtype=author&query=Oku%2C+T">Takayuki Oku</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">Tatsuya Sawano</a>, <a href="/search/physics?searchtype=author&query=Shinohara%2C+T">Takenao Shinohara</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+J">Jun-ichi Suzuki</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+K">Kazuki Ueno</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="1305.3687v1-abstract-short" style="display: inline;"> We present a detailed study of the spatial resolution of our time-resolved neutron imaging detector utilizing a new neutron position reconstruction method that improves both spatial resolution and event reconstruction efficiency. Our prototype detector system, employing a micro-pattern gaseous detector known as the micro-pixel chamber (渭PIC) coupled with a field-programmable-gate-array-based data… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.3687v1-abstract-full').style.display = 'inline'; document.getElementById('1305.3687v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1305.3687v1-abstract-full" style="display: none;"> We present a detailed study of the spatial resolution of our time-resolved neutron imaging detector utilizing a new neutron position reconstruction method that improves both spatial resolution and event reconstruction efficiency. Our prototype detector system, employing a micro-pattern gaseous detector known as the micro-pixel chamber (渭PIC) coupled with a field-programmable-gate-array-based data acquisition system, combines 100渭m-level spatial and sub-渭s time resolutions with excellent gamma rejection and high data rates, making it well suited for applications in neutron radiography at high-intensity, pulsed neutron sources. From data taken at the Materials and Life Science Experimental Facility within the Japan Proton Accelerator Research Complex (J-PARC), the spatial resolution was found to be approximately Gaussian with a sigma of 103.48 +/- 0.77 渭m (after correcting for beam divergence). This is a significant improvement over that achievable with our previous reconstruction method (334 +/- 13 渭m), and compares well with conventional neutron imaging detectors and with other high-rate detectors currently under development. Further, a detector simulation indicates that a spatial resolution of less than 60 渭m may be possible with optimization of the gas characteristics and 渭PIC structure. We also present an example of imaging combined with neutron resonance absorption spectroscopy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.3687v1-abstract-full').style.display = 'none'; document.getElementById('1305.3687v1-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> 16 May, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">8 pages, 8 figures, submitted to Nuclear Instruments 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/1209.5856">arXiv:1209.5856</a> <span> [<a href="https://arxiv.org/pdf/1209.5856">pdf</a>, <a href="https://arxiv.org/ps/1209.5856">ps</a>, <a href="https://arxiv.org/format/1209.5856">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="Materials Science">cond-mat.mtrl-sci</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.2012.08.036">10.1016/j.nima.2012.08.036 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutron imaging detector based on the muPIC micro-pixel chamber </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Parker%2C+J+D">J. D. Parker</a>, <a href="/search/physics?searchtype=author&query=Hattori%2C+K">K. Hattori</a>, <a href="/search/physics?searchtype=author&query=Fujioka%2C+H">H. Fujioka</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/physics?searchtype=author&query=Iwaki%2C+S">S. Iwaki</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">S. Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">S. Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">K. Miuchi</a>, <a href="/search/physics?searchtype=author&query=Nagae%2C+T">T. Nagae</a>, <a href="/search/physics?searchtype=author&query=Nishimura%2C+H">H. Nishimura</a>, <a href="/search/physics?searchtype=author&query=Oku%2C+T">T. Oku</a>, <a href="/search/physics?searchtype=author&query=Sawano%2C+T">T. Sawano</a>, <a href="/search/physics?searchtype=author&query=Shinohara%2C+T">T. Shinohara</a>, <a href="/search/physics?searchtype=author&query=Suzuki%2C+J">J. Suzuki</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">A. Takada</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">T. Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+K">K. Ueno</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="1209.5856v1-abstract-short" style="display: inline;"> We have developed a prototype time-resolved neutron imaging detector employing the micro-pixel chamber (muPIC), a micro-pattern gaseous detector, coupled with a field programmable gate array-based data acquisition system for applications in neutron radiography at high-intensity neutron sources. The prototype system, with an active area of 10cm x 10cm and operated at a gas pressure of 2 atm, measur… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1209.5856v1-abstract-full').style.display = 'inline'; document.getElementById('1209.5856v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1209.5856v1-abstract-full" style="display: none;"> We have developed a prototype time-resolved neutron imaging detector employing the micro-pixel chamber (muPIC), a micro-pattern gaseous detector, coupled with a field programmable gate array-based data acquisition system for applications in neutron radiography at high-intensity neutron sources. The prototype system, with an active area of 10cm x 10cm and operated at a gas pressure of 2 atm, measures both the energy deposition (via time-over-threshold) and 3-dimensional track of each neutron-induced event, allowing the reconstruction of the neutron interaction point with improved accuracy. Using a simple position reconstruction algorithm, a spatial resolution of 349 +/- 36 microns was achieved, with further improvement expected. The detailed tracking allows strong rejection of background gamma-rays, resulting in an effective gamma sensitivity of 10^-12 or less, coupled with stable, robust neutron identification. The detector also features a time resolution of 0.6 microseconds. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1209.5856v1-abstract-full').style.display = 'none'; document.getElementById('1209.5856v1-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 September, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">10 pages, 13 figures; accepted for publication in NIMA</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/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/physics/0701118">arXiv:physics/0701118</a> <span> [<a href="https://arxiv.org/pdf/physics/0701118">pdf</a>, <a href="https://arxiv.org/ps/physics/0701118">ps</a>, <a href="https://arxiv.org/format/physics/0701118">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/10.1142/9789812770288_0042">10.1142/9789812770288_0042 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Detector performance of the NEWAGE experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Hattori%2C+K">Kaori Hattori</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">Shigeto Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">Shunsuke Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Nishimura%2C+H">Hironobu Nishimura</a>, <a href="/search/physics?searchtype=author&query=Okada%2C+Y">Yoko Okada</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Tsuchiya%2C+K">Ken'ichi Tsuchiya</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+K">Kazuki Ueno</a>, <a href="/search/physics?searchtype=author&query=Sekiya%2C+H">Hiroyuki Sekiya</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Atsushi Takeda</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="physics/0701118v1-abstract-short" style="display: inline;"> NEWAGE(NEw generation WIMP search with an Advanced Gaseous tracking device Experiment) project is a direction-sensitive dark matter search experiment with a gaseous micro time-projection-chamber(micro-TPC). We report on the performance of the micro-TPC with a detection volume of 23x28x30 cm3 operated with a carbon-tetra uoride (CF4) of 0.2 bar. </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0701118v1-abstract-full" style="display: none;"> NEWAGE(NEw generation WIMP search with an Advanced Gaseous tracking device Experiment) project is a direction-sensitive dark matter search experiment with a gaseous micro time-projection-chamber(micro-TPC). We report on the performance of the micro-TPC with a detection volume of 23x28x30 cm3 operated with a carbon-tetra uoride (CF4) of 0.2 bar. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0701118v1-abstract-full').style.display = 'none'; document.getElementById('physics/0701118v1-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> 10 January, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2007. </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">6 pages, 4 figutres, proceedings of IDM 2006</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0701085">arXiv:physics/0701085</a> <span> [<a href="https://arxiv.org/pdf/physics/0701085">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 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.2007.01.117">10.1016/j.nima.2007.01.117 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of a Time-Projection-Chamber with a Large-Area Micro-Pixel-Chamber Readout </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Hattori%2C+K">Kaori Hattori</a>, <a href="/search/physics?searchtype=author&query=Kabuki%2C+S">Shigeto Kabuki</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Kurosawa%2C+S">Shunsuke Kurosawa</a>, <a href="/search/physics?searchtype=author&query=Nishimura%2C+H">Hironobu Nishimura</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Tsuchiya%2C+K">Ken'ichi Tsuchiya</a>, <a href="/search/physics?searchtype=author&query=Okada%2C+Y">Yoko Okada</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+K">Kazuki Ueno</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="physics/0701085v1-abstract-short" style="display: inline;"> A micro time-projection-chamber (micro-TPC) with a detection volume of 23*28*31 cm^3 was developed, and its fundamental performance was examined. The micro-TPC consists of a micro pixel chamber with a detection area of 31*31 cm^2 as a two-dimensional imaging device and a gas electron multiplier with an effective area of 23*28 cm^2 as a pre-gas-multiplier. The micro-TPC was operated at a gas gain… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0701085v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0701085v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0701085v1-abstract-full" style="display: none;"> A micro time-projection-chamber (micro-TPC) with a detection volume of 23*28*31 cm^3 was developed, and its fundamental performance was examined. The micro-TPC consists of a micro pixel chamber with a detection area of 31*31 cm^2 as a two-dimensional imaging device and a gas electron multiplier with an effective area of 23*28 cm^2 as a pre-gas-multiplier. The micro-TPC was operated at a gas gain of 50,000, and energy resolutions and spatial resolutions were measured. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0701085v1-abstract-full').style.display = 'none'; document.getElementById('physics/0701085v1-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 January, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2007. </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">4 pages, 7 figures, proceedings of IWORID 8</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A576:43-46,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0510221">arXiv:physics/0510221</a> <span> [<a href="https://arxiv.org/pdf/physics/0510221">pdf</a>, <a href="https://arxiv.org/ps/physics/0510221">ps</a>, <a href="https://arxiv.org/format/physics/0510221">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.2006.01.096">10.1016/j.nima.2006.01.096 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Studies of the performance of different front-end systems for flat-panel multi-anode PMTs with CsI(Tl) scintillator arrays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/physics?searchtype=author&query=Hattori%2C+K">K. Hattori</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">K. Miuchi</a>, <a href="/search/physics?searchtype=author&query=Nagayoshi%2C+T">T. Nagayoshi</a>, <a href="/search/physics?searchtype=author&query=Nishimura%2C+H">H. Nishimura</a>, <a href="/search/physics?searchtype=author&query=Okada%2C+Y">Y. Okada</a>, <a href="/search/physics?searchtype=author&query=Orito%2C+R">R. Orito</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">A. Takada</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">T. Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+K">K. Ueno</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="physics/0510221v1-abstract-short" style="display: inline;"> We have studied the performance of two different types of front-end systems for our gamma camera based on Hamamatsu H8500 (flat-panel 64 channels multi-anode PSPMT) with a CsI(Tl) scintillator array. The array consists of 64 pixels of $6\times6\times20{\rm mm}^3$ which corresponds to the anode pixels of H8500. One of the system is based on commercial ASIC chips in order to readout every anode. T… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0510221v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0510221v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0510221v1-abstract-full" style="display: none;"> We have studied the performance of two different types of front-end systems for our gamma camera based on Hamamatsu H8500 (flat-panel 64 channels multi-anode PSPMT) with a CsI(Tl) scintillator array. The array consists of 64 pixels of $6\times6\times20{\rm mm}^3$ which corresponds to the anode pixels of H8500. One of the system is based on commercial ASIC chips in order to readout every anode. The others are based on resistive charge divider network between anodes to reduce readout channels. In both systems, each pixel (6mm) was clearly resolved by flood field irradiation of $^{137}$Cs. We also investigated the energy resolution of these systems and showed the performance of the cascade connection of resistive network between some PMTs for large area detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0510221v1-abstract-full').style.display = 'none'; document.getElementById('physics/0510221v1-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, 2005; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2005. </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, 6 figures, proceedings of the 7th International Workshop on Radiation Imaging Detectors (IWORID7), submitted to NIMA</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0503223">arXiv:physics/0503223</a> <span> [<a href="https://arxiv.org/pdf/physics/0503223">pdf</a>, <a href="https://arxiv.org/ps/physics/0503223">ps</a>, <a href="https://arxiv.org/format/physics/0503223">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.2005.02.042">10.1016/j.nima.2005.02.042 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Simulation study of electron drift and gas multiplication in Micro Pixel Chamber </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Nagayoshi%2C+T">Tsutomu Nagayoshi</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Orito%2C+R">Reiko Orito</a>, <a href="/search/physics?searchtype=author&query=Okada%2C+Y">Yoko Okada</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Atsushi Takeda</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+M">Masaru Ueno</a>, <a href="/search/physics?searchtype=author&query=Bouianov%2C+O">Oleg Bouianov</a>, <a href="/search/physics?searchtype=author&query=Bouianov%2C+M">Marina Bouianov</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="physics/0503223v1-abstract-short" style="display: inline;"> The physical processes of charge collection and gas multiplication of a Micro Pixel Chamber (mu-PIC) were studied in detail using a three-dimensional simulation. The collection efficiencies of primary electrons and gas multiplication factors were calculated for several electrode structures. Based on those studies, we analyzed the optimization of the electrode structure of the mu-PIC, in order to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0503223v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0503223v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0503223v1-abstract-full" style="display: none;"> The physical processes of charge collection and gas multiplication of a Micro Pixel Chamber (mu-PIC) were studied in detail using a three-dimensional simulation. The collection efficiencies of primary electrons and gas multiplication factors were calculated for several electrode structures. Based on those studies, we analyzed the optimization of the electrode structure of the mu-PIC, in order to obtain a high gas gain of more than 10^4 and a simultaneous suppression of discharges. Consequently, we found that these characteristics strongly depend on the substrate thickness and the anode diameter of the mu-PIC. In addition, a gas gain of 10^5 would be expected for a mu-PIC having a thick substrate of > 150um. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0503223v1-abstract-full').style.display = 'none'; document.getElementById('physics/0503223v1-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 March, 2005; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2005. </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">16 pages, 14 figures, Submitted to Nucl. Instr. Methods A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth. A546 (2005) 457-465 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0403065">arXiv:physics/0403065</a> <span> [<a href="https://arxiv.org/pdf/physics/0403065">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 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/10.1109/TNS.2004.832673">10.1109/TNS.2004.832673 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development of an ASD IC for the Micro Pixel Chamber </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Orito%2C+R">R. Orito</a>, <a href="/search/physics?searchtype=author&query=Sasaki%2C+O">O. Sasaki</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">K. Miuchi</a>, <a href="/search/physics?searchtype=author&query=Nagayoshi%2C+T">T. Nagayoshi</a>, <a href="/search/physics?searchtype=author&query=Okada%2C+Y">Y. Okada</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">A. Takada</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">T. Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+M">M. Ueno</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="physics/0403065v1-abstract-short" style="display: inline;"> A new amplifier-shaper-discriminator (ASD) chip was designed and manufactured for the Micro Pixel Chamber ($渭$-PIC). The design of this ASD IC is based on the ASD IC (TGC-ASD) for the Thin Gap Chamber in the LHC Atlas Experiment. The decay time constant of the preamplifier is 5-times longer than that of the TGC-ASD, and some other modifications have been made in order to improve the signal-to-no… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0403065v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0403065v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0403065v1-abstract-full" style="display: none;"> A new amplifier-shaper-discriminator (ASD) chip was designed and manufactured for the Micro Pixel Chamber ($渭$-PIC). The design of this ASD IC is based on the ASD IC (TGC-ASD) for the Thin Gap Chamber in the LHC Atlas Experiment. The decay time constant of the preamplifier is 5-times longer than that of the TGC-ASD, and some other modifications have been made in order to improve the signal-to-noise ratio of the $渭$-PIC. The ASD IC uses SONY Analog Master Slice bipolar technology. The IC contains 4 channels in a QFP48 package. The decay time constant of the preamplifier is 80 ns and its gain is approximately 0.8 V/pC. The output from the preamplifier is received by a shaper (main-amplifier) with a gain of 7. A baseline restoration circuit is incorporated in the main-amplifier, and the current used for the baseline restoration is 5-times smaller than that of the TGC-ASD. The threshold voltage for the discriminator section is common to the 4 channels and their digital output level is LVDS-compatible. The ASD IC also has an analog output of the preamplifier. The equivalent noise charge at the input capacitance of 50 pF is around 2000 electrons. The power dissipation with LVDS outputs (100 $惟$ load) is 57 mW/ch. Using this ASD, the analog output voltage from the signal of the $渭$-PIC is about 2-times higher than the case of using the TGC-ASD.As a consequence, the MIPs tracking performance of the Time Projection Chamber (TPC) with the $渭$-PIC was improved.The performance of the ASD IC and an improved tracking performance of the TPC are reported. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0403065v1-abstract-full').style.display = 'none'; document.getElementById('physics/0403065v1-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> 10 March, 2004; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2004. </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">6 pages, 14 figures, submitted for IEEE/TNS 2003</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> IEEE Trans.Nucl.Sci. 51 (2004) 1337-1342 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0308097">arXiv:physics/0308097</a> <span> [<a href="https://arxiv.org/pdf/physics/0308097">pdf</a>, <a href="https://arxiv.org/ps/physics/0308097">ps</a>, <a href="https://arxiv.org/format/physics/0308097">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.2003.09.063">10.1016/j.nima.2003.09.063 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of a micro-TPC for a time-resolved neutron PSD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">Kentaro Miuchi</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">Hidetoshi Kubo</a>, <a href="/search/physics?searchtype=author&query=Nagayoshi%2C+T">Tsutomu Nagayoshi</a>, <a href="/search/physics?searchtype=author&query=Orito%2C+R">Reiko Orito</a>, <a href="/search/physics?searchtype=author&query=Takada%2C+A">Atsushi Takada</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Atsushi Takeda</a>, <a href="/search/physics?searchtype=author&query=Tanimori%2C+T">Toru Tanimori</a>, <a href="/search/physics?searchtype=author&query=Ueno%2C+M">Masaru Ueno</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="physics/0308097v1-abstract-short" style="display: inline;"> We report on the performance of a micro-TPC with a micro pixel chamber($渭$-PIC) readout for a time-resolved neutron position-sensitive detector(PSD). Three-dimensional tracks and the Bragg curves of protons with energies of around 1 MeV were clearly detected by the micro-TPC. More than 95% of gamma-rays of 511 keV were found to be discriminated by simple analysis. Simulation studies showed that… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0308097v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0308097v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0308097v1-abstract-full" style="display: none;"> We report on the performance of a micro-TPC with a micro pixel chamber($渭$-PIC) readout for a time-resolved neutron position-sensitive detector(PSD). Three-dimensional tracks and the Bragg curves of protons with energies of around 1 MeV were clearly detected by the micro-TPC. More than 95% of gamma-rays of 511 keV were found to be discriminated by simple analysis. Simulation studies showed that the total track length of proton and triton emitted from the $\rm {}^{3}He$(n,p(573 keV))$\rm {}^{3}H(191 keV)$ reaction is about 1.2 cm, and that both particles have large energy losses ($\rm > 200 keV/cm$) in 1 atm Ar+$\rm C_{2}H_{6}(10%)$+${}^{3}$He($< 1%$). These values suit the current performance of the micro-TPC, and we conclude that a time-resolved neutron PSD with spatial resolution of sub-millimeters shall be developed as an application of the micro-TPC. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0308097v1-abstract-full').style.display = 'none'; document.getElementById('physics/0308097v1-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 August, 2003; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2003. </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">13 pages, 10 figures, to appear in NIM 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/physics/9904014">arXiv:physics/9904014</a> <span> [<a href="https://arxiv.org/pdf/physics/9904014">pdf</a>, <a href="https://arxiv.org/ps/physics/9904014">ps</a>, <a href="https://arxiv.org/format/physics/9904014">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/S0168-9002(99)00603-8">10.1016/S0168-9002(99)00603-8 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The X-ray CCD camera of the MAXI Experiment on the ISS/JEM </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Miyata%2C+E">E. Miyata</a>, <a href="/search/physics?searchtype=author&query=Tsunemi%2C+H">H. Tsunemi</a>, <a href="/search/physics?searchtype=author&query=Ogata%2C+H">H. Ogata</a>, <a href="/search/physics?searchtype=author&query=Akutsu%2C+D">D. Akutsu</a>, <a href="/search/physics?searchtype=author&query=Yoshita%2C+K">K. Yoshita</a>, <a href="/search/physics?searchtype=author&query=Hashimoto%2C+Y">Y. Hashimoto</a>, <a href="/search/physics?searchtype=author&query=Torii%2C+K">K. Torii</a>, <a href="/search/physics?searchtype=author&query=Matsuoka%2C+M">M. Matsuoka</a>, <a href="/search/physics?searchtype=author&query=Kawai%2C+N">N. Kawai</a>, <a href="/search/physics?searchtype=author&query=Yoshida%2C+A">A. Yoshida</a>, <a href="/search/physics?searchtype=author&query=Mihara%2C+T">T. Mihara</a>, <a href="/search/physics?searchtype=author&query=Kotani%2C+T">T. Kotani</a>, <a href="/search/physics?searchtype=author&query=Negoro%2C+H">H. Negoro</a>, <a href="/search/physics?searchtype=author&query=Kubo%2C+H">H. Kubo</a>, <a href="/search/physics?searchtype=author&query=Matsumoto%2C+H">H. Matsumoto</a>, <a href="/search/physics?searchtype=author&query=Shirasaki%2C+Y">Y. Shirasaki</a>, <a href="/search/physics?searchtype=author&query=Rubin%2C+B+C">B. C. Rubin</a>, <a href="/search/physics?searchtype=author&query=Sakurai%2C+I">I. Sakurai</a>, <a href="/search/physics?searchtype=author&query=Yamauchi%2C+M">M. Yamauchi</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="physics/9904014v1-abstract-short" style="display: inline;"> MAXI, Monitor of All-sky X-ray Image, is the X-ray observatory on the Japanese experimental module (JEM) Exposed Facility (EF) on the International Space Station (ISS). MAXI is a slit scanning camera which consists of two kinds of X-ray detectors: one is a one-dimensional position-sensitive proportional counter with a total area of $\sim 5000 cm^2$, the Gas Slit Camera (GSC), and the other is an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/9904014v1-abstract-full').style.display = 'inline'; document.getElementById('physics/9904014v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/9904014v1-abstract-full" style="display: none;"> MAXI, Monitor of All-sky X-ray Image, is the X-ray observatory on the Japanese experimental module (JEM) Exposed Facility (EF) on the International Space Station (ISS). MAXI is a slit scanning camera which consists of two kinds of X-ray detectors: one is a one-dimensional position-sensitive proportional counter with a total area of $\sim 5000 cm^2$, the Gas Slit Camera (GSC), and the other is an X-ray CCD array with a total area $\sim 200 cm^2$, the Solid-state Slit Camera (SSC). The GSC subtends a field of view with an angular dimension of 1$^\circ\times 180^\circ$ while the SSC subtends a field of view with an angular dimension of 1$^\circ$ times a little less than 180$^\circ$. In the course of one station orbit, MAXI can scan almost the entire sky with a precision of 1$^\circ$ and with an X-ray energy range of 0.5-30 keV. We have developed the engineering model of CCD chips and the analogue electronics for the SSC. The energy resolution of EM CCD for Mn K$伪$ has a full-width at half maximum of $\simeq$ 182 eV. Readout noise is $\simeq$ 11 e^- rms. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/9904014v1-abstract-full').style.display = 'none'; document.getElementById('physics/9904014v1-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 April, 1999; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 1999. </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">10 pages, 4 figures Accepted for Nuclear Instruments and Method in Physics Research</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns 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