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<button class="button is-small 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/2310.08616">arXiv:2310.08616</a> <span> [<a href="https://arxiv.org/pdf/2310.08616">pdf</a>, <a href="https://arxiv.org/format/2310.08616">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="Atmospheric and Oceanic Physics">physics.ao-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Ground observations of a space laser for the assessment of its in-orbit performance </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Lux%2C+O">O. Lux</a>, <a href="/search/physics?searchtype=author&query=Krisch%2C+I">I. Krisch</a>, <a href="/search/physics?searchtype=author&query=Reitebuch%2C+O">O. Reitebuch</a>, <a href="/search/physics?searchtype=author&query=Huber%2C+D">D. Huber</a>, <a href="/search/physics?searchtype=author&query=Wernham%2C+D">D. Wernham</a>, <a href="/search/physics?searchtype=author&query=Parrinello%2C+T">T. Parrinello</a>, <a href="/search/physics?searchtype=author&query=%3A"> :</a>, <a href="/search/physics?searchtype=author&query=Halim%2C+A+A">A. Abdul Halim</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Cheminant%2C+K+A">K. Almeida Cheminant</a>, <a href="/search/physics?searchtype=author&query=Almela%2C+A">A. Almela</a>, <a href="/search/physics?searchtype=author&query=Aloisio%2C+R">R. Aloisio</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Yebra%2C+J+A">J. Ammerman Yebra</a>, <a href="/search/physics?searchtype=author&query=Anastasi%2C+G+A">G. A. Anastasi</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andrada%2C+B">B. Andrada</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Anukriti"> Anukriti</a>, <a href="/search/physics?searchtype=author&query=Apollonio%2C+L">L. Apollonio</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+P+R+A">P. R. Ara煤jo Ferreira</a> , et al. (358 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="2310.08616v1-abstract-short" style="display: inline;"> The wind mission Aeolus of the European Space Agency was a groundbreaking achievement for Earth observation. Between 2018 and 2023, the space-borne lidar instrument ALADIN onboard the Aeolus satellite measured atmospheric wind profiles with global coverage which contributed to improving the accuracy of numerical weather prediction. The precision of the wind observations, however, declined over the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.08616v1-abstract-full').style.display = 'inline'; document.getElementById('2310.08616v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.08616v1-abstract-full" style="display: none;"> The wind mission Aeolus of the European Space Agency was a groundbreaking achievement for Earth observation. Between 2018 and 2023, the space-borne lidar instrument ALADIN onboard the Aeolus satellite measured atmospheric wind profiles with global coverage which contributed to improving the accuracy of numerical weather prediction. The precision of the wind observations, however, declined over the course of the mission due to a progressive loss of the atmospheric backscatter signal. The analysis of the root cause was supported by the Pierre Auger Observatory in Argentina whose fluorescence detector registered the ultraviolet laser pulses emitted from the instrument in space, thereby offering an estimation of the laser energy at the exit of the instrument for several days in 2019, 2020 and 2021. The reconstruction of the laser beam not only allowed for an independent assessment of the Aeolus performance, but also helped to improve the accuracy in the determination of the laser beam's ground track on single pulse level. The results presented in this paper set a precedent for the monitoring of space lasers by ground-based telescopes and open new possibilities for the calibration of cosmic-ray observatories. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.08616v1-abstract-full').style.display = 'none'; document.getElementById('2310.08616v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 10 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.05131">arXiv:2212.05131</a> <span> [<a href="https://arxiv.org/pdf/2212.05131">pdf</a>, <a href="https://arxiv.org/format/2212.05131">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> </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.2023.168446">10.1016/j.nima.2023.168446 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Outdoor Systems Performace and Upgrade </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lopes%2C+L">L. Lopes</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Blanco%2C+A">A. Blanco</a>, <a href="/search/physics?searchtype=author&query=Carolino%2C+N">N. Carolino</a>, <a href="/search/physics?searchtype=author&query=Cerda%2C+M+A">M. A. Cerda</a>, <a href="/search/physics?searchtype=author&query=Clem%C3%AAncio%2C+F">F. Clem锚ncio</a>, <a href="/search/physics?searchtype=author&query=Concei%C3%A7%C3%A3o%2C+R">R. Concei莽茫o</a>, <a href="/search/physics?searchtype=author&query=Cunha%2C+O">O. Cunha</a>, <a href="/search/physics?searchtype=author&query=Dobrigkeit%2C+C">C. Dobrigkeit</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+M">M. Ferreira</a>, <a href="/search/physics?searchtype=author&query=Loureiro%2C+C">C. Loureiro</a>, <a href="/search/physics?searchtype=author&query=Mendes%2C+L">L. Mendes</a>, <a href="/search/physics?searchtype=author&query=Nogueira%2C+J+C">J. C. Nogueira</a>, <a href="/search/physics?searchtype=author&query=Pereira%2C+A">A. Pereira</a>, <a href="/search/physics?searchtype=author&query=Pimenta%2C+M">M. Pimenta</a>, <a href="/search/physics?searchtype=author&query=Saraiva%2C+J">J. Saraiva</a>, <a href="/search/physics?searchtype=author&query=Sarmento%2C+R">R. Sarmento</a>, <a href="/search/physics?searchtype=author&query=Teixeira%2C+P">P. Teixeira</a>, <a href="/search/physics?searchtype=author&query=Tom%C3%A9%2C+B">B. Tom茅</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="2212.05131v1-abstract-short" style="display: inline;"> Over the last two decades, the possibility of using RPCs in outdoors systems has increased considerably. Our group has participated in this effort having installed several systems and continues to work on their optimization, while simultaneously studying and developing new approaches that can to use of RPCs in outdoor applications. In particular, some detectors were deployed in the field at the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.05131v1-abstract-full').style.display = 'inline'; document.getElementById('2212.05131v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.05131v1-abstract-full" style="display: none;"> Over the last two decades, the possibility of using RPCs in outdoors systems has increased considerably. Our group has participated in this effort having installed several systems and continues to work on their optimization, while simultaneously studying and developing new approaches that can to use of RPCs in outdoor applications. In particular, some detectors were deployed in the field at the Pierre Auger Observatory in 2019 remained inactive, awaiting the commissioning of support systems. During the pandemic the detectors were left without gas flow for more than two years, but were recently reactivated with no major problems. The LouMu project combines particle physics and geophysics in order to map large geologic structures, using Muon Tomography. The development of the RPC system used and the data from the last two years will be presented. Finally, recent advances in a large area (1 m2) double gap-sealed RPC will be presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.05131v1-abstract-full').style.display = 'none'; document.getElementById('2212.05131v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.08782">arXiv:2203.08782</a> <span> [<a href="https://arxiv.org/pdf/2203.08782">pdf</a>, <a href="https://arxiv.org/format/2203.08782">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="High Energy Physics - Phenomenology">hep-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/10.1140/epjc/s10052-022-10857-1">10.1140/epjc/s10052-022-10857-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Mercedes water Cherenkov detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Bakalov%C3%A1%2C+A">A. Bakalov谩</a>, <a href="/search/physics?searchtype=author&query=de+Almeida%2C+U+B">U. Barres de Almeida</a>, <a href="/search/physics?searchtype=author&query=Brogueira%2C+P">P. Brogueira</a>, <a href="/search/physics?searchtype=author&query=Concei%C3%A7%C3%A3o%2C+R">R. Concei莽茫o</a>, <a href="/search/physics?searchtype=author&query=De+Angelis%2C+A">A. De Angelis</a>, <a href="/search/physics?searchtype=author&query=Gibilisco%2C+L">L. Gibilisco</a>, <a href="/search/physics?searchtype=author&query=Gonz%C3%A1lez%2C+B+S">B. S. Gonz谩lez</a>, <a href="/search/physics?searchtype=author&query=Guill%C3%A9n%2C+A">A. Guill茅n</a>, <a href="/search/physics?searchtype=author&query=La+Mura%2C+G">G. La Mura</a>, <a href="/search/physics?searchtype=author&query=Mendes%2C+L+M+D">L. M. D. Mendes</a>, <a href="/search/physics?searchtype=author&query=Mendes%2C+L+F">L. F. Mendes</a>, <a href="/search/physics?searchtype=author&query=Pimenta%2C+M">M. Pimenta</a>, <a href="/search/physics?searchtype=author&query=Shellard%2C+R+C">R. C. Shellard</a>, <a href="/search/physics?searchtype=author&query=Tom%C3%A9%2C+B">B. Tom茅</a>, <a href="/search/physics?searchtype=author&query=V%C3%ADcha%2C+J">J. V铆cha</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="2203.08782v2-abstract-short" style="display: inline;"> The concept of a small, single-layer water Cherenkov detector, with three photomultiplier tubes (PMTs), placed at its bottom in a $120^{\circ}$ star configuration (\emph{Mercedes} Water Cherenkov Detector) is presented. The PMTs are placed near the lateral walls of the stations with an adjustable inclination and may be installed inside or outside the water volume. To illustrate the technical viabi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.08782v2-abstract-full').style.display = 'inline'; document.getElementById('2203.08782v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.08782v2-abstract-full" style="display: none;"> The concept of a small, single-layer water Cherenkov detector, with three photomultiplier tubes (PMTs), placed at its bottom in a $120^{\circ}$ star configuration (\emph{Mercedes} Water Cherenkov Detector) is presented. The PMTs are placed near the lateral walls of the stations with an adjustable inclination and may be installed inside or outside the water volume. To illustrate the technical viability of this concept and obtain a first-order estimation of its cost, an engineering design was elaborated. The sensitivity of these stations to low energy Extensive Air Shower (EAS) electrons, photons and muons is discussed, both in compact and sparse array configurations. It is shown that the analysis of the intensity and time patterns of the PMT signals, using machine learning techniques, enables the tagging of muons, achieving an excellent gamma/hadron discrimination for TeV showers. This concept minimises the station production and maintenance costs, allowing for a highly flexible and fast installation. Mercedes Water Cherenkov Detectors (WCDs) are thus well-suited for use in high-altitude large gamma-ray observatories covering an extended energy range from the low energies, closing the gap between satellite and ground-based measurements, to very high energy regions, beyond the PeV scale. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.08782v2-abstract-full').style.display = 'none'; document.getElementById('2203.08782v2-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 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 11 figures, accepted in Eur.Phys.J.C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.06633">arXiv:2011.06633</a> <span> [<a href="https://arxiv.org/pdf/2011.06633">pdf</a>, <a href="https://arxiv.org/format/2011.06633">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/10.1088/1748-0221/16/01/P01026">10.1088/1748-0221/16/01/P01026 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Design, upgrade and characterization of the silicon photomultiplier front-end for the AMIGA detector at the Pierre Auger Observatory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aab%2C+A">A. Aab</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Albury%2C+J+M">J. M. Albury</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Almela%2C+A">A. Almela</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Batista%2C+R+A">R. Alves Batista</a>, <a href="/search/physics?searchtype=author&query=Anastasi%2C+G+A">G. A. Anastasi</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andrada%2C+B">B. Andrada</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+P+R+A">P. R. Ara煤jo Ferreira</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+G">G. Avila</a>, <a href="/search/physics?searchtype=author&query=Badescu%2C+A+M">A. M. Badescu</a>, <a href="/search/physics?searchtype=author&query=Bakalova%2C+A">A. Bakalova</a>, <a href="/search/physics?searchtype=author&query=Balaceanu%2C+A">A. Balaceanu</a>, <a href="/search/physics?searchtype=author&query=Barbato%2C+F">F. Barbato</a>, <a href="/search/physics?searchtype=author&query=Luz%2C+R+J+B">R. J. Barreira Luz</a>, <a href="/search/physics?searchtype=author&query=Becker%2C+K+H">K. H. Becker</a>, <a href="/search/physics?searchtype=author&query=Bellido%2C+J+A">J. A. Bellido</a> , et al. (335 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="2011.06633v2-abstract-short" style="display: inline;"> AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to complement the study of ultra-high-energy cosmic rays (UHECR) by measuring the muon content of extensive air showers (EAS). It consists of an array of 61 water Cherenkov detectors on a denser spacing in combination with underground scintillation detectors used for muon density measurement. Each det… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.06633v2-abstract-full').style.display = 'inline'; document.getElementById('2011.06633v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.06633v2-abstract-full" style="display: none;"> AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to complement the study of ultra-high-energy cosmic rays (UHECR) by measuring the muon content of extensive air showers (EAS). It consists of an array of 61 water Cherenkov detectors on a denser spacing in combination with underground scintillation detectors used for muon density measurement. Each detector is composed of three scintillation modules, with 10 m$^2$ detection area per module, buried at 2.3 m depth, resulting in a total detection area of 30 m$^2$. Silicon photomultiplier sensors (SiPM) measure the amount of scintillation light generated by charged particles traversing the modules. In this paper, the design of the front-end electronics to process the signals of those SiPMs and test results from the laboratory and from the Pierre Auger Observatory are described. Compared to our previous prototype, the new electronics shows a higher performance, higher efficiency and lower power consumption, and it has a new acquisition system with increased dynamic range that allows measurements closer to the shower core. The new acquisition system is based on the measurement of the total charge signal that the muonic component of the cosmic ray shower generates in the detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.06633v2-abstract-full').style.display = 'none'; document.getElementById('2011.06633v2-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 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">40 pages, 33 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-20-605-AD-E-TD </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 16 (2021) P01026 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.09840">arXiv:2008.09840</a> <span> [<a href="https://arxiv.org/pdf/2008.09840">pdf</a>, <a href="https://arxiv.org/format/2008.09840">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-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/10.1063/5.0055201">10.1063/5.0055201 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Accurate modeling and characterization of photothermal forces in optomechanics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Primo%2C+A+G">Andr茅 G. Primo</a>, <a href="/search/physics?searchtype=author&query=Kersul%2C+C+M">Cau锚 M. Kersul</a>, <a href="/search/physics?searchtype=author&query=Benevides%2C+R">Rodrigo Benevides</a>, <a href="/search/physics?searchtype=author&query=Carvalho%2C+N+C">Nat谩lia C. Carvalho</a>, <a href="/search/physics?searchtype=author&query=M%C3%A9nard%2C+M">Micha毛l M茅nard</a>, <a href="/search/physics?searchtype=author&query=Frateschi%2C+N+C">Newton C. Frateschi</a>, <a href="/search/physics?searchtype=author&query=de+Assis%2C+P">Pierre-Louis de Assis</a>, <a href="/search/physics?searchtype=author&query=Wiederhecker%2C+G+S">Gustavo S. Wiederhecker</a>, <a href="/search/physics?searchtype=author&query=Alegre%2C+T+P+M">Thiago P. Mayer Alegre</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="2008.09840v2-abstract-short" style="display: inline;"> Photothermal effects have been pointed out as prominent sources of forces in optomechanical systems, competing with the standard radiation pressure interactions. In this Article, we derive a novel and accurate model for the prediction of photothermal forces and establish how some previous proposals can be complemented to yield precise results. As a proof-of-concept, we perform numerical and experi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.09840v2-abstract-full').style.display = 'inline'; document.getElementById('2008.09840v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.09840v2-abstract-full" style="display: none;"> Photothermal effects have been pointed out as prominent sources of forces in optomechanical systems, competing with the standard radiation pressure interactions. In this Article, we derive a novel and accurate model for the prediction of photothermal forces and establish how some previous proposals can be complemented to yield precise results. As a proof-of-concept, we perform numerical and experimental tests on GaAs microdisks cavities and obtain striking agreement with our framework, revealing the importance of considering surface photothermal forces and the effects of multiple thermal modes in microphotonic devices. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.09840v2-abstract-full').style.display = 'none'; document.getElementById('2008.09840v2-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 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.04139">arXiv:2007.04139</a> <span> [<a href="https://arxiv.org/pdf/2007.04139">pdf</a>, <a href="https://arxiv.org/format/2007.04139">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/10.1088/1748-0221/15/09/P09002">10.1088/1748-0221/15/09/P09002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Studies on the response of a water-Cherenkov detector of the Pierre Auger Observatory to atmospheric muons using an RPC hodoscope </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aab%2C+A">A. Aab</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Albury%2C+J+M">J. M. Albury</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Almela%2C+A">A. Almela</a>, <a href="/search/physics?searchtype=author&query=Castillo%2C+J+A">J. Alvarez Castillo</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Batista%2C+R+A">R. Alves Batista</a>, <a href="/search/physics?searchtype=author&query=Anastasi%2C+G+A">G. A. Anastasi</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andrada%2C+B">B. Andrada</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+P+R+A">P. R. Ara煤jo Ferreira</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+G">G. Avila</a>, <a href="/search/physics?searchtype=author&query=Badescu%2C+A+M">A. M. Badescu</a>, <a href="/search/physics?searchtype=author&query=Bakalova%2C+A">A. Bakalova</a>, <a href="/search/physics?searchtype=author&query=Balaceanu%2C+A">A. Balaceanu</a>, <a href="/search/physics?searchtype=author&query=Barbato%2C+F">F. Barbato</a>, <a href="/search/physics?searchtype=author&query=Luz%2C+R+J+B">R. J. Barreira Luz</a>, <a href="/search/physics?searchtype=author&query=Becker%2C+K+H">K. H. Becker</a> , et al. (353 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="2007.04139v2-abstract-short" style="display: inline;"> Extensive air showers, originating from ultra-high energy cosmic rays, have been successfully measured through the use of arrays of water-Cherenkov detectors (WCDs). Sophisticated analyses exploiting WCD data have made it possible to demonstrate that shower simulations, based on different hadronic-interaction models, cannot reproduce the observed number of muons at the ground. The accurate knowled… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.04139v2-abstract-full').style.display = 'inline'; document.getElementById('2007.04139v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.04139v2-abstract-full" style="display: none;"> Extensive air showers, originating from ultra-high energy cosmic rays, have been successfully measured through the use of arrays of water-Cherenkov detectors (WCDs). Sophisticated analyses exploiting WCD data have made it possible to demonstrate that shower simulations, based on different hadronic-interaction models, cannot reproduce the observed number of muons at the ground. The accurate knowledge of the WCD response to muons is paramount in establishing the exact level of this discrepancy. In this work, we report on a study of the response of a WCD of the Pierre Auger Observatory to atmospheric muons performed with a hodoscope made of resistive plate chambers (RPCs), enabling us to select and reconstruct nearly 600 thousand single muon trajectories with zenith angles ranging from 0$^\circ$ to 55$^\circ$. Comparison of distributions of key observables between the hodoscope data and the predictions of dedicated simulations allows us to demonstrate the accuracy of the latter at a level of 2%. As the WCD calibration is based on its response to atmospheric muons, the hodoscope data are also exploited to show the long-term stability of the procedure. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.04139v2-abstract-full').style.display = 'none'; document.getElementById('2007.04139v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published version, 25 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-20-285-PPD-TD </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15 (2020) P09002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.08291">arXiv:2006.08291</a> <span> [<a href="https://arxiv.org/pdf/2006.08291">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/10.1088/1748-0221/15/11/C11009">10.1088/1748-0221/15/11/C11009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Towards Sealed Resistive Plate Chambers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Assis%2C+L+L+P">L. Lopes P. Assis</a>, <a href="/search/physics?searchtype=author&query=Blanco%2C+A">A. Blanco</a>, <a href="/search/physics?searchtype=author&query=Fonte%2C+P">P. Fonte</a>, <a href="/search/physics?searchtype=author&query=Pimenta%2C+M">M. Pimenta</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="2006.08291v1-abstract-short" style="display: inline;"> The mitigation of human-induced climate change is of crucial importance for the sustainability of humankind. For this aim the RPC community has exerted considerable effort over the last decade to reduce the emission of greenhouse gases from our detectors. These included searching for new eco-friendly gases, implementing recovery and/or recirculation systems, improving gastightness and using new ma… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.08291v1-abstract-full').style.display = 'inline'; document.getElementById('2006.08291v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.08291v1-abstract-full" style="display: none;"> The mitigation of human-induced climate change is of crucial importance for the sustainability of humankind. For this aim the RPC community has exerted considerable effort over the last decade to reduce the emission of greenhouse gases from our detectors. These included searching for new eco-friendly gases, implementing recovery and/or recirculation systems, improving gastightness and using new materials and approaches in detector conception and operation for the reduction of gas flow rates. Along this line of work, we present here an RPC architecture aimed at a dramatic reduction of gas use in chambers meant for low-rate operation. Two chambers were tested for more than six months with zero gas flow showing no evidence of time-related effects, allowing to consider that permanently sealed RPCs may be within reach, with obvious practical and environmental advantages. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.08291v1-abstract-full').style.display = 'none'; document.getElementById('2006.08291v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.07352">arXiv:1810.07352</a> <span> [<a href="https://arxiv.org/pdf/1810.07352">pdf</a>, <a href="https://arxiv.org/ps/1810.07352">ps</a>, <a href="https://arxiv.org/format/1810.07352">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevA.100.013835">10.1103/PhysRevA.100.013835 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Optical force laws for guided light in linear media </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Fernandes%2C+T+F+D">Thales F. D. Fernandes</a>, <a href="/search/physics?searchtype=author&query=de+Assis%2C+P">Pierre-Louis de Assis</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="1810.07352v1-abstract-short" style="display: inline;"> The mechanical response of transparent materials to optical forces is a topic that concerns a wide range of fields, from the manipulation of biological material by optical tweezers to the design of nano-optomechanical systems (NOMS). However, the fundamental aspects of such forces have always been surrounded by controversies, and several different formulations have been proposed. In this work, we… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.07352v1-abstract-full').style.display = 'inline'; document.getElementById('1810.07352v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.07352v1-abstract-full" style="display: none;"> The mechanical response of transparent materials to optical forces is a topic that concerns a wide range of fields, from the manipulation of biological material by optical tweezers to the design of nano-optomechanical systems (NOMS). However, the fundamental aspects of such forces have always been surrounded by controversies, and several different formulations have been proposed. In this work, we focus on the specific case of light propagating as a superposition of guided modes in lossless dielectric waveguides as a physical example upon which to build a general stress tensor. We use this formalism to calculate optical forces for straight and curved waveguide sections and all possible excitation configurations for a given set of coupled eigenmodes, and then compare the results for each of the known proposed optical force laws as well as a novel one derived from this general stress tensor. We show that proper use of the divergence theorem is crucial to account for all force terms, many of which vanish if the procedure most commonly used is applied for situations other than eigenmodes in straight waveguides. A better understanding of how different stress tensors predict very different forces for certain waveguide geometries opens a pathway for new experimental tests of each formulation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.07352v1-abstract-full').style.display = 'none'; document.getElementById('1810.07352v1-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 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">14 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. A 100, 013835 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1712.07685">arXiv:1712.07685</a> <span> [<a href="https://arxiv.org/pdf/1712.07685">pdf</a>, <a href="https://arxiv.org/format/1712.07685">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 Astrophysical Phenomena">astro-ph.HE</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/10.1140/epjc/s10052-018-5820-2">10.1140/epjc/s10052-018-5820-2 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> MARTA: A high-energy cosmic-ray detector concept with high-accuracy muon measurement </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Blanco%2C+A">A. Blanco</a>, <a href="/search/physics?searchtype=author&query=Martins%2C+V+B">V. Barbosa Martins</a>, <a href="/search/physics?searchtype=author&query=Brogueira%2C+P">P. Brogueira</a>, <a href="/search/physics?searchtype=author&query=Carolino%2C+N">N. Carolino</a>, <a href="/search/physics?searchtype=author&query=Cazon%2C+L">L. Cazon</a>, <a href="/search/physics?searchtype=author&query=Cerda%2C+M">M. Cerda</a>, <a href="/search/physics?searchtype=author&query=Cernicchiaro%2C+G">G. Cernicchiaro</a>, <a href="/search/physics?searchtype=author&query=Colalillo%2C+R">R. Colalillo</a>, <a href="/search/physics?searchtype=author&query=Concei%C3%A7%C3%A3o%2C+R">R. Concei莽茫o</a>, <a href="/search/physics?searchtype=author&query=Cunha%2C+O">O. Cunha</a>, <a href="/search/physics?searchtype=author&query=de+Almeida%2C+R+M">R. M. de Almeida</a>, <a href="/search/physics?searchtype=author&query=de+Souza%2C+V">V. de Souza</a>, <a href="/search/physics?searchtype=author&query=Diogo%2C+F">F. Diogo</a>, <a href="/search/physics?searchtype=author&query=Dobrigkeit%2C+C">C. Dobrigkeit</a>, <a href="/search/physics?searchtype=author&query=Espadanal%2C+J">J. Espadanal</a>, <a href="/search/physics?searchtype=author&query=Espirito-Santo%2C+C">C. Espirito-Santo</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+M">M. Ferreira</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+P">P. Ferreira</a>, <a href="/search/physics?searchtype=author&query=Fonte%2C+P">P. Fonte</a>, <a href="/search/physics?searchtype=author&query=Giaccari%2C+U">U. Giaccari</a>, <a href="/search/physics?searchtype=author&query=Gon%C3%A7alves%2C+P">P. Gon莽alves</a>, <a href="/search/physics?searchtype=author&query=Guarino%2C+F">F. Guarino</a> , et al. (20 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="1712.07685v2-abstract-short" style="display: inline;"> A new concept for the direct measurement of muons in air showers is presented. The concept is based on resistive plate chambers (RPCs), which can directly measure muons with very good space and time resolution. The muon detector is shielded by placing it under another detector able to absorb and measure the electromagnetic component of the showers such as a water-Cherenkov detector, commonly used… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.07685v2-abstract-full').style.display = 'inline'; document.getElementById('1712.07685v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1712.07685v2-abstract-full" style="display: none;"> A new concept for the direct measurement of muons in air showers is presented. The concept is based on resistive plate chambers (RPCs), which can directly measure muons with very good space and time resolution. The muon detector is shielded by placing it under another detector able to absorb and measure the electromagnetic component of the showers such as a water-Cherenkov detector, commonly used in air shower arrays. The combination of the two detectors in a single, compact detector unit provides a unique measurement that opens rich possibilities in the study of air showers. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.07685v2-abstract-full').style.display = 'none'; document.getElementById('1712.07685v2-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 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">11 pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1709.09624">arXiv:1709.09624</a> <span> [<a href="https://arxiv.org/pdf/1709.09624">pdf</a>, <a href="https://arxiv.org/format/1709.09624">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 Astrophysical Phenomena">astro-ph.HE</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="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> LATTES: a novel detector concept for a gamma-ray experiment in the Southern hemisphere </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=de+Almeida%2C+U+B">U. Barres de Almeida</a>, <a href="/search/physics?searchtype=author&query=Blanco%2C+A">A. Blanco</a>, <a href="/search/physics?searchtype=author&query=Concei%C3%A7%C3%A3o%2C+R">R. Concei莽茫o</a>, <a href="/search/physics?searchtype=author&query=Piazzoli%2C+B+D">B. D'Ettore Piazzoli</a>, <a href="/search/physics?searchtype=author&query=De+Angelis%2C+A">A. De Angelis</a>, <a href="/search/physics?searchtype=author&query=Doro%2C+M">M. Doro</a>, <a href="/search/physics?searchtype=author&query=Fonte%2C+P">P. Fonte</a>, <a href="/search/physics?searchtype=author&query=Lopes%2C+L">L. Lopes</a>, <a href="/search/physics?searchtype=author&query=Matthiae%2C+G">G. Matthiae</a>, <a href="/search/physics?searchtype=author&query=Pimenta%2C+M">M. Pimenta</a>, <a href="/search/physics?searchtype=author&query=Shellard%2C+R">R. Shellard</a>, <a href="/search/physics?searchtype=author&query=Tom%C3%A9%2C+B">B. Tom茅</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="1709.09624v2-abstract-short" style="display: inline;"> The Large Array Telescope for Tracking Energetic Sources (LATTES), is a novel concept for an array of hybrid EAS array detectors, composed of a Resistive Plate Counter array coupled to a Water Cherenkov Detector, planned to cover gamma rays from less than 100 GeV up to 100 TeVs. This experiment, to be installed at high altitude in South America, could cover the existing gap in sensitivity between… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.09624v2-abstract-full').style.display = 'inline'; document.getElementById('1709.09624v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.09624v2-abstract-full" style="display: none;"> The Large Array Telescope for Tracking Energetic Sources (LATTES), is a novel concept for an array of hybrid EAS array detectors, composed of a Resistive Plate Counter array coupled to a Water Cherenkov Detector, planned to cover gamma rays from less than 100 GeV up to 100 TeVs. This experiment, to be installed at high altitude in South America, could cover the existing gap in sensitivity between satellite and ground arrays. The low energy threshold, large duty cycle and wide field of view of LATTES makes it a powerful tool to detect transient phenomena and perform long term observations of variable sources. Moreover, given its characteristics, it would be fully complementary to the planned Cherenkov Telescope Array (CTA) as it would be able to issue alerts. In this talk, a description of its main features and capabilities, as well as results on its expected performance, and sensitivity, will be presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.09624v2-abstract-full').style.display = 'none'; document.getElementById('1709.09624v2-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 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">Proceedings of the 35th International Cosmic Ray Conference (ICRC2017), Busan, South Korea. Presented by R. Concei莽茫o. 8 pages; v2: correct affiliation + journal reference</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> PoS ICRC2017 784 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1709.09619">arXiv:1709.09619</a> <span> [<a href="https://arxiv.org/pdf/1709.09619">pdf</a>, <a href="https://arxiv.org/format/1709.09619">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"> Autonomous RPCs for a Cosmic Ray ground array </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Assis%2C+P">Pedro Assis</a>, <a href="/search/physics?searchtype=author&query=Blanco%2C+A">Alberto Blanco</a>, <a href="/search/physics?searchtype=author&query=Carolino%2C+N">Nuno Carolino</a>, <a href="/search/physics?searchtype=author&query=Concei%C3%A7%C3%A3o%2C+R">Ruben Concei莽茫o</a>, <a href="/search/physics?searchtype=author&query=Cunha%2C+O">Orlando Cunha</a>, <a href="/search/physics?searchtype=author&query=Dobrigkeit%2C+C">Carola Dobrigkeit</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+M">Miguel Ferreira</a>, <a href="/search/physics?searchtype=author&query=Fonte%2C+P">Paulo Fonte</a>, <a href="/search/physics?searchtype=author&query=Lopes%2C+L">Luis Lopes</a>, <a href="/search/physics?searchtype=author&query=Luz%2C+R">Ricardo Luz</a>, <a href="/search/physics?searchtype=author&query=Martins%2C+V+B">Victor Barbosa Martins</a>, <a href="/search/physics?searchtype=author&query=Mendes%2C+L">Luis Mendes</a>, <a href="/search/physics?searchtype=author&query=Pereira%2C+A">Am茅rico Pereira</a>, <a href="/search/physics?searchtype=author&query=Pimenta%2C+M">M谩rio Pimenta</a>, <a href="/search/physics?searchtype=author&query=Sarmento%2C+R">Raul Sarmento</a>, <a href="/search/physics?searchtype=author&query=Shellard%2C+R">Ronald Shellard</a>, <a href="/search/physics?searchtype=author&query=de+Souza%2C+V">Vitor de Souza</a>, <a href="/search/physics?searchtype=author&query=Tom%C3%A9%2C+B">Bernardo Tom茅</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="1709.09619v1-abstract-short" style="display: inline;"> We report on the behaviour of Resistive Plate Chambers (RPC) developed for muon detection in ultra-high energy cosmic ray (UHECR) experiments. The RPCs were developed for the MARTA project and were tested on field conditions. These RPCs cover an area of $1.5 \times 1.2\,{m^2}$ and are instrumented with 64 pickup electrodes providing a segmentation better than $20\,$cm. By shielding the detector un… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.09619v1-abstract-full').style.display = 'inline'; document.getElementById('1709.09619v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.09619v1-abstract-full" style="display: none;"> We report on the behaviour of Resistive Plate Chambers (RPC) developed for muon detection in ultra-high energy cosmic ray (UHECR) experiments. The RPCs were developed for the MARTA project and were tested on field conditions. These RPCs cover an area of $1.5 \times 1.2\,{m^2}$ and are instrumented with 64 pickup electrodes providing a segmentation better than $20\,$cm. By shielding the detector units with enough slant mass to absorb the electromagnetic component in the air showers, a clean measurement of the muon content is allowed, a concept to be implemented in a next generation of UHECR experiments. The operation of a ground array detector poses challenging demands, as the RPC must operate remotely under extreme environmental conditions, with limited budgets for power and minimal maintenance. The RPC, DAQ, High Voltage and monitoring systems are enclosed in an aluminium-sealed case, providing a compact and robust unit suited for outdoor environments, which can be easily deployed and connected. The RPCs developed at LIP-Coimbra are able to operate using a very low gas flux, which allows running them for few years with a small gas reservoir. Several prototypes have already been built and tested both in the laboratory and outdoors. We report on the most recent tests done in the field that show that the developed RPCs have operated in a stable way for more than 2 years in field conditions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.09619v1-abstract-full').style.display = 'none'; document.getElementById('1709.09619v1-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 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">To appear in the proceedings of the 35th International Cosmic Ray Conference (ICRC2017), Busan, South Korea. Presented by R. Concei莽茫o. 8 pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1709.01537">arXiv:1709.01537</a> <span> [<a href="https://arxiv.org/pdf/1709.01537">pdf</a>, <a href="https://arxiv.org/format/1709.01537">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.astropartphys.2017.09.001">10.1016/j.astropartphys.2017.09.001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectral Calibration of the Fluorescence Telescopes of the Pierre Auger Observatory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aab%2C+A">A. Aab</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Samarai%2C+I+A">I. Al Samarai</a>, <a href="/search/physics?searchtype=author&query=Albuquerque%2C+I+F+M">I. F. M. Albuquerque</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Almela%2C+A">A. Almela</a>, <a href="/search/physics?searchtype=author&query=Castillo%2C+J+A">J. Alvarez Castillo</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Anastasi%2C+G+A">G. A. Anastasi</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andrada%2C+B">B. Andrada</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Arqueros%2C+F">F. Arqueros</a>, <a href="/search/physics?searchtype=author&query=Arsene%2C+N">N. Arsene</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+G">G. Avila</a>, <a href="/search/physics?searchtype=author&query=Badescu%2C+A+M">A. M. Badescu</a>, <a href="/search/physics?searchtype=author&query=Balaceanu%2C+A">A. Balaceanu</a>, <a href="/search/physics?searchtype=author&query=Barbato%2C+F">F. Barbato</a>, <a href="/search/physics?searchtype=author&query=Luz%2C+R+J+B">R. J. Barreira Luz</a> , et al. (381 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="1709.01537v3-abstract-short" style="display: inline;"> We present a novel method to measure precisely the relative spectral response of the fluorescence telescopes of the Pierre Auger Observatory. We used a portable light source based on a xenon flasher and a monochromator to measure the relative spectral efficiencies of eight telescopes in steps of 5 nm from 280 nm to 440 nm. Each point in a scan had approximately 2 nm FWHM out of the monochromator.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.01537v3-abstract-full').style.display = 'inline'; document.getElementById('1709.01537v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.01537v3-abstract-full" style="display: none;"> We present a novel method to measure precisely the relative spectral response of the fluorescence telescopes of the Pierre Auger Observatory. We used a portable light source based on a xenon flasher and a monochromator to measure the relative spectral efficiencies of eight telescopes in steps of 5 nm from 280 nm to 440 nm. Each point in a scan had approximately 2 nm FWHM out of the monochromator. Different sets of telescopes in the observatory have different optical components, and the eight telescopes measured represent two each of the four combinations of components represented in the observatory. We made an end-to-end measurement of the response from different combinations of optical components, and the monochromator setup allowed for more precise and complete measurements than our previous multi-wavelength calibrations. We find an overall uncertainty in the calibration of the spectral response of most of the telescopes of 1.5% for all wavelengths; the six oldest telescopes have larger overall uncertainties of about 2.2%. We also report changes in physics measureables due to the change in calibration, which are generally small. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.01537v3-abstract-full').style.display = 'none'; document.getElementById('1709.01537v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">Published version. Added journal reference and DOI. Added Report Number</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-17-355 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Astroparticle Physics 95 (2017) 44-56 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1706.04051">arXiv:1706.04051</a> <span> [<a href="https://arxiv.org/pdf/1706.04051">pdf</a>, <a href="https://arxiv.org/format/1706.04051">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-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/10.1109/JLT.2017.2784856">10.1109/JLT.2017.2784856 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Center of mass acceleration in coupled nanowaveguides due to transverse optical beating force </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Fernandes%2C+T+F+D">Thales F. D. Fernandes</a>, <a href="/search/physics?searchtype=author&query=Carvalho%2C+C+K+M+C">Cau锚 K. M. C. Carvalho</a>, <a href="/search/physics?searchtype=author&query=Guimar%C3%A3es%2C+P+S+S">Paulo S茅rgio S. Guimar茫es</a>, <a href="/search/physics?searchtype=author&query=Neves%2C+B+R+A">Bernardo R. A. Neves</a>, <a href="/search/physics?searchtype=author&query=de+Assis%2C+P">Pierre-Louis de Assis</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="1706.04051v2-abstract-short" style="display: inline;"> Eigenmode optical forces arising in symmetrically coupled waveguides have opposite sign on opposite waveguides and thus can deform the waveguides by changing their relative separation, but cannot change any other degree of freedom on their own. It would be extremely desirable to have a way to act on the center of mass of such a system. In this work we show that it is possible to do so by injecting… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.04051v2-abstract-full').style.display = 'inline'; document.getElementById('1706.04051v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1706.04051v2-abstract-full" style="display: none;"> Eigenmode optical forces arising in symmetrically coupled waveguides have opposite sign on opposite waveguides and thus can deform the waveguides by changing their relative separation, but cannot change any other degree of freedom on their own. It would be extremely desirable to have a way to act on the center of mass of such a system. In this work we show that it is possible to do so by injecting a superposition of eigenmodes that are degenerate in frequency and have opposite parity along the desired direction, resulting in beating forces that have the same sign on opposite waveguides and therefore act on the center of mass. We have used both the Maxwell Stress Tensor formalism and the induced dipole force equation to numerically calculate this transverse beating force and have found its magnitude to be comparable to the eigenmode forces. We also show that the longitudinal variation caused by the spatial beating pattern on the time-averaged quantities used in the calculations must be taken into account in order to properly employ the divergence theorem and obtain the correct magnitudes. We then propose a heuristic model that shows good quantitative agreement with the numerical results and may be used as a prototyping tool for accurate and fast computation without relying on expensive numerical computation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.04051v2-abstract-full').style.display = 'none'; document.getElementById('1706.04051v2-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 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 June, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.04056">arXiv:1705.04056</a> <span> [<a href="https://arxiv.org/pdf/1705.04056">pdf</a>, <a href="https://arxiv.org/format/1705.04056">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Other Condensed Matter">cond-mat.other</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.97.201106">10.1103/PhysRevB.97.201106 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Giant non-linear interaction between two optical beams via a quantum dot embeddedin a photonic wire </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Nguyen%2C+H+A">H. A Nguyen</a>, <a href="/search/physics?searchtype=author&query=Grange%2C+T">T. Grange</a>, <a href="/search/physics?searchtype=author&query=Reznychenko%2C+B">B Reznychenko</a>, <a href="/search/physics?searchtype=author&query=Yeo%2C+I">I. Yeo</a>, <a href="/search/physics?searchtype=author&query=De+Assis%2C+P+-">P. -L De Assis</a>, <a href="/search/physics?searchtype=author&query=Tumanov%2C+D">D Tumanov</a>, <a href="/search/physics?searchtype=author&query=Fratini%2C+F">F Fratini</a>, <a href="/search/physics?searchtype=author&query=Malik%2C+N">N Malik</a>, <a href="/search/physics?searchtype=author&query=Dupuy%2C+E">E Dupuy</a>, <a href="/search/physics?searchtype=author&query=Gregersen%2C+N">N Gregersen</a>, <a href="/search/physics?searchtype=author&query=Auff%C3%A8ves%2C+A">A Auff猫ves</a>, <a href="/search/physics?searchtype=author&query=G%C3%A9rard%2C+J+-">J. -M G茅rard</a>, <a href="/search/physics?searchtype=author&query=Claudon%2C+J">J Claudon</a>, <a href="/search/physics?searchtype=author&query=Poizat%2C+J+-">J. -Ph Poizat</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="1705.04056v2-abstract-short" style="display: inline;"> Optical non-linearities usually appear for large intensities, but discrete transitions allow for giant non-linearities operating at the single photon level. This has been demonstrated in the last decade for a single optical mode with cold atomic gases, or single two-level systems coupled to light via a tailored photonic environment. Here we demonstrate a two-modes giant non-linearity by using a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.04056v2-abstract-full').style.display = 'inline'; document.getElementById('1705.04056v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.04056v2-abstract-full" style="display: none;"> Optical non-linearities usually appear for large intensities, but discrete transitions allow for giant non-linearities operating at the single photon level. This has been demonstrated in the last decade for a single optical mode with cold atomic gases, or single two-level systems coupled to light via a tailored photonic environment. Here we demonstrate a two-modes giant non-linearity by using a three-level structure in a single semiconductor quantum dot (QD) embedded in a photonic wire antenna. The large coupling efficiency and the broad operation bandwidth of the photonic wire enable us to have two different laser beams interacting with the QD in order to control the reflectivity of a laser beam with the other one using as few as 10 photons per QD lifetime. We discuss the possibilities offered by this easily integrable system for ultra-low power logical gates and optical quantum gates. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.04056v2-abstract-full').style.display = 'none'; document.getElementById('1705.04056v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 97, 201106 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1703.06193">arXiv:1703.06193</a> <span> [<a href="https://arxiv.org/pdf/1703.06193">pdf</a>, <a href="https://arxiv.org/format/1703.06193">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/10.1088/1748-0221/12/03/P03002">10.1088/1748-0221/12/03/P03002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Muon Counting using Silicon Photomultipliers in the AMIGA detector of the Pierre Auger Observatory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aab%2C+A">A. Aab</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Ahn%2C+E+J">E. J. Ahn</a>, <a href="/search/physics?searchtype=author&query=Samarai%2C+I+A">I. Al Samarai</a>, <a href="/search/physics?searchtype=author&query=Albuquerque%2C+I+F+M">I. F. M. Albuquerque</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Allison%2C+P">P. Allison</a>, <a href="/search/physics?searchtype=author&query=Almela%2C+A">A. Almela</a>, <a href="/search/physics?searchtype=author&query=Castillo%2C+J+A">J. Alvarez Castillo</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Ambrosio%2C+M">M. Ambrosio</a>, <a href="/search/physics?searchtype=author&query=Anastasi%2C+G+A">G. A. Anastasi</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andrada%2C+B">B. Andrada</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Arqueros%2C+F">F. Arqueros</a>, <a href="/search/physics?searchtype=author&query=Arsene%2C+N">N. Arsene</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+G">G. Avila</a>, <a href="/search/physics?searchtype=author&query=Badescu%2C+A+M">A. M. Badescu</a> , et al. (400 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="1703.06193v2-abstract-short" style="display: inline;"> AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory designed to extend its energy range of detection and to directly measure the muon content of the cosmic ray primary particle showers. The array will be formed by an infill of surface water-Cherenkov detectors associated with buried scintillation counters employed for muon counting. Each counter is com… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.06193v2-abstract-full').style.display = 'inline'; document.getElementById('1703.06193v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1703.06193v2-abstract-full" style="display: none;"> AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory designed to extend its energy range of detection and to directly measure the muon content of the cosmic ray primary particle showers. The array will be formed by an infill of surface water-Cherenkov detectors associated with buried scintillation counters employed for muon counting. Each counter is composed of three scintillation modules, with a 10 m$^2$ detection area per module. In this paper, a new generation of detectors, replacing the current multi-pixel photomultiplier tube (PMT) with silicon photo sensors (aka. SiPMs), is proposed. The selection of the new device and its front-end electronics is explained. A method to calibrate the counting system that ensures the performance of the detector is detailed. This method has the advantage of being able to be carried out in a remote place such as the one where the detectors are deployed. High efficiency results, i.e. 98 % efficiency for the highest tested overvoltage, combined with a low probability of accidental counting ($\sim$2 %), show a promising performance for this new system. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.06193v2-abstract-full').style.display = 'none'; document.getElementById('1703.06193v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 March, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">24 pages, 12 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-16-656-AD-CD-TD </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 12 (2017) P03002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1606.03240">arXiv:1606.03240</a> <span> [<a href="https://arxiv.org/pdf/1606.03240">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/10.1088/1748-0221/11/09/C09011">10.1088/1748-0221/11/09/C09011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Outdoor Field Experience with Autonomous RPC Based Stations </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lopes%2C+L">L. Lopes</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Blanco%2C+A">A. Blanco</a>, <a href="/search/physics?searchtype=author&query=Carolino%2C+N">N. Carolino</a>, <a href="/search/physics?searchtype=author&query=Cerda%2C+M+A">M. A. Cerda</a>, <a href="/search/physics?searchtype=author&query=Concei%C3%A7%C3%A3o%2C+R">R. Concei莽茫o</a>, <a href="/search/physics?searchtype=author&query=Cunha%2C+O">O. Cunha</a>, <a href="/search/physics?searchtype=author&query=Ferreira%2C+M">M. Ferreira</a>, <a href="/search/physics?searchtype=author&query=Fonte%2C+P">P. Fonte</a>, <a href="/search/physics?searchtype=author&query=Luz%2C+R">R. Luz</a>, <a href="/search/physics?searchtype=author&query=Mendes%2C+L">L. Mendes</a>, <a href="/search/physics?searchtype=author&query=Pereira%2C+A">A. Pereira</a>, <a href="/search/physics?searchtype=author&query=Pimenta%2C+M">M. Pimenta</a>, <a href="/search/physics?searchtype=author&query=Sarmento%2C+R">R. Sarmento</a>, <a href="/search/physics?searchtype=author&query=Tom%C3%A9%2C+B">B. Tom茅</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="1606.03240v2-abstract-short" style="display: inline;"> In the last two decades Resistive Plate Chambers were employed in the Cosmic Ray Experiments COVER-PLASTEX and ARGO/YBJ. In both experiments the detectors were housed indoors, likely owing to gas distribution requirements and the need to control environment variables that directly affect RPCs operational stability. But in experiments where Extended Air Shower (EAS) sampling is necessary, large are… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.03240v2-abstract-full').style.display = 'inline'; document.getElementById('1606.03240v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.03240v2-abstract-full" style="display: none;"> In the last two decades Resistive Plate Chambers were employed in the Cosmic Ray Experiments COVER-PLASTEX and ARGO/YBJ. In both experiments the detectors were housed indoors, likely owing to gas distribution requirements and the need to control environment variables that directly affect RPCs operational stability. But in experiments where Extended Air Shower (EAS) sampling is necessary, large area arrays composed by dispersed stations are deployed, rendering this kind of approach impossible. In this situation, it would be mandatory to have detectors that could be deployed in small standalone stations, with very rare opportunities for maintenance, and with good resilience to environmental conditions. Aiming to meet these requirements, we started some years ago the development of RPCs for Autonomous Stations. The results from indoor tests and measurements were very promising, both concerning performance and stability under very low gas flow rate, which is the main requirement for Autonomous Stations. In this work we update the indoor results and show the first ones concerning outdoor stable operation. In particular, a dynamic adjustment of the high voltage is applied to keep gas gain constant. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.03240v2-abstract-full').style.display = 'none'; document.getElementById('1606.03240v2-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 August, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 June, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2016. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.01625">arXiv:1605.01625</a> <span> [<a href="https://arxiv.org/pdf/1605.01625">pdf</a>, <a href="https://arxiv.org/format/1605.01625">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/11/02/P02012">10.1088/1748-0221/11/02/P02012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Prototype muon detectors for the AMIGA component of the Pierre Auger Observatory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aab%2C+A">A. Aab</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Ahn%2C+E+J">E. J. Ahn</a>, <a href="/search/physics?searchtype=author&query=Samarai%2C+I+A">I. Al Samarai</a>, <a href="/search/physics?searchtype=author&query=Albuquerque%2C+I+F+M">I. F. M. Albuquerque</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Allison%2C+P">P. Allison</a>, <a href="/search/physics?searchtype=author&query=Almela%2C+A">A. Almela</a>, <a href="/search/physics?searchtype=author&query=Castillo%2C+J+A">J. Alvarez Castillo</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Batista%2C+R+A">R. Alves Batista</a>, <a href="/search/physics?searchtype=author&query=Ambrosio%2C+M">M. Ambrosio</a>, <a href="/search/physics?searchtype=author&query=Aminaei%2C+A">A. Aminaei</a>, <a href="/search/physics?searchtype=author&query=Anastasi%2C+G+A">G. A. Anastasi</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andrada%2C+B">B. Andrada</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Arqueros%2C+F">F. Arqueros</a>, <a href="/search/physics?searchtype=author&query=Arsene%2C+N">N. Arsene</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Aublin%2C+J">J. Aublin</a> , et al. (429 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="1605.01625v2-abstract-short" style="display: inline;"> Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to extend its range of detection and to directly measure the muon content of the particle showers. It consists of an infill of surface water-Cherenkov detectors accompanied by buried scintillator detectors used for muon counting. The main objectives of the AMIGA engineering array, referred to as the Unitary… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.01625v2-abstract-full').style.display = 'inline'; document.getElementById('1605.01625v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.01625v2-abstract-full" style="display: none;"> Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to extend its range of detection and to directly measure the muon content of the particle showers. It consists of an infill of surface water-Cherenkov detectors accompanied by buried scintillator detectors used for muon counting. The main objectives of the AMIGA engineering array, referred to as the Unitary Cell, are to identify and resolve all engineering issues as well as to understand the muon-number counting uncertainties related to the design of the detector. The mechanical design, fabrication and deployment processes of the muon counters of the Unitary Cell are described in this document. These muon counters modules comprise sealed PVC casings containing plastic scintillation bars, wavelength-shifter optical fibers, 64 pixel photomultiplier tubes, and acquisition electronics. The modules are buried approximately 2.25 m below ground level in order to minimize contamination from electromagnetic shower particles. The mechanical setup, which allows access to the electronics for maintenance, is also described in addition to tests of the modules' response and integrity. The completed Unitary Cell has measured a number of air showers of which a first analysis of a sample event is included here. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.01625v2-abstract-full').style.display = 'none'; document.getElementById('1605.01625v2-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 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">Replaced with published version. Added journal reference and DOI</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-16-164-AD-AE-CD-TD </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 11 (2016) P02012 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.02216">arXiv:1512.02216</a> <span> [<a href="https://arxiv.org/pdf/1512.02216">pdf</a>, <a href="https://arxiv.org/format/1512.02216">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/11/01/P01018">10.1088/1748-0221/11/01/P01018 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nanosecond-level time synchronization of autonomous radio detector stations for extensive air showers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aab%2C+A">A. Aab</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Ahn%2C+E+J">E. J. Ahn</a>, <a href="/search/physics?searchtype=author&query=Samarai%2C+I+A">I. Al Samarai</a>, <a href="/search/physics?searchtype=author&query=Albuquerque%2C+I+F+M">I. F. M. Albuquerque</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Allison%2C+P">P. Allison</a>, <a href="/search/physics?searchtype=author&query=Almela%2C+A">A. Almela</a>, <a href="/search/physics?searchtype=author&query=Castillo%2C+J+A">J. Alvarez Castillo</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Batista%2C+R+A">R. Alves Batista</a>, <a href="/search/physics?searchtype=author&query=Ambrosio%2C+M">M. Ambrosio</a>, <a href="/search/physics?searchtype=author&query=Aminaei%2C+A">A. Aminaei</a>, <a href="/search/physics?searchtype=author&query=Anastasi%2C+G+A">G. A. Anastasi</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Arqueros%2C+F">F. Arqueros</a>, <a href="/search/physics?searchtype=author&query=Arsene%2C+N">N. Arsene</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+G">G. Avila</a> , et al. (426 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="1512.02216v2-abstract-short" style="display: inline;"> To exploit the full potential of radio measurements of cosmic-ray air showers at MHz frequencies, a detector timing synchronization within 1 ns is needed. Large distributed radio detector arrays such as the Auger Engineering Radio Array (AERA) rely on timing via the Global Positioning System (GPS) for the synchronization of individual detector station clocks. Unfortunately, GPS timing is expected… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.02216v2-abstract-full').style.display = 'inline'; document.getElementById('1512.02216v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.02216v2-abstract-full" style="display: none;"> To exploit the full potential of radio measurements of cosmic-ray air showers at MHz frequencies, a detector timing synchronization within 1 ns is needed. Large distributed radio detector arrays such as the Auger Engineering Radio Array (AERA) rely on timing via the Global Positioning System (GPS) for the synchronization of individual detector station clocks. Unfortunately, GPS timing is expected to have an accuracy no better than about 5 ns. In practice, in particular in AERA, the GPS clocks exhibit drifts on the order of tens of ns. We developed a technique to correct for the GPS drifts, and an independent method is used for cross-checks that indeed we reach nanosecond-scale timing accuracy by this correction. First, we operate a "beacon transmitter" which emits defined sine waves detected by AERA antennas recorded within the physics data. The relative phasing of these sine waves can be used to correct for GPS clock drifts. In addition to this, we observe radio pulses emitted by commercial airplanes, the position of which we determine in real time from Automatic Dependent Surveillance Broadcasts intercepted with a software-defined radio. From the known source location and the measured arrival times of the pulses we determine relative timing offsets between radio detector stations. We demonstrate with a combined analysis that the two methods give a consistent timing calibration with an accuracy of 2 ns or better. Consequently, the beacon method alone can be used in the future to continuously determine and correct for GPS clock drifts in each individual event measured by AERA. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.02216v2-abstract-full').style.display = 'none'; document.getElementById('1512.02216v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">26 pages. Replaced with published version. Added journal reference and DOI</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-15-560-AD-CD-TD </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 11 (2016) P01018 11 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1107.4807">arXiv:1107.4807</a> <span> [<a href="https://arxiv.org/pdf/1107.4807">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 Methods for Astrophysics">astro-ph.IM</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="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1742-6596/375/1/052006">10.1088/1742-6596/375/1/052006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Pierre Auger Observatory V: Enhancements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Ahn%2C+E+J">E. J. Ahn</a>, <a href="/search/physics?searchtype=author&query=Albuquerque%2C+I+F+M">I. F. M. Albuquerque</a>, <a href="/search/physics?searchtype=author&query=Allard%2C+D">D. Allard</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Allen%2C+J">J. Allen</a>, <a href="/search/physics?searchtype=author&query=Allison%2C+P">P. Allison</a>, <a href="/search/physics?searchtype=author&query=Castillo%2C+J+A">J. Alvarez Castillo</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Ambrosio%2C+M">M. Ambrosio</a>, <a href="/search/physics?searchtype=author&query=Aminaei%2C+A">A. Aminaei</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Anti%C4%8Di%C4%87%2C+T">T. Anti膷i膰</a>, <a href="/search/physics?searchtype=author&query=Anzalone%2C+A">A. Anzalone</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Arganda%2C+E">E. Arganda</a>, <a href="/search/physics?searchtype=author&query=Arqueros%2C+F">F. Arqueros</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Avenier%2C+M">M. Avenier</a> , et al. (471 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="1107.4807v1-abstract-short" style="display: inline;"> Ongoing and planned enhancements of the Pierre Auger Observatory </span> <span class="abstract-full has-text-grey-dark mathjax" id="1107.4807v1-abstract-full" style="display: none;"> Ongoing and planned enhancements of the Pierre Auger Observatory <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1107.4807v1-abstract-full').style.display = 'none'; document.getElementById('1107.4807v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 July, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">Contributions to 32nd International Cosmic Ray Conference, Beijing, China, August 2011</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1107.4806">arXiv:1107.4806</a> <span> [<a href="https://arxiv.org/pdf/1107.4806">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 Methods for Astrophysics">astro-ph.IM</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="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"> The Pierre Auger Observatory IV: Operation and Monitoring </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Pierre+Auger+Collaboration"> The Pierre Auger Collaboration</a>, <a href="/search/physics?searchtype=author&query=Abreu%2C+P">P. Abreu</a>, <a href="/search/physics?searchtype=author&query=Aglietta%2C+M">M. Aglietta</a>, <a href="/search/physics?searchtype=author&query=Ahn%2C+E+J">E. J. Ahn</a>, <a href="/search/physics?searchtype=author&query=Albuquerque%2C+I+F+M">I. F. M. Albuquerque</a>, <a href="/search/physics?searchtype=author&query=Allard%2C+D">D. Allard</a>, <a href="/search/physics?searchtype=author&query=Allekotte%2C+I">I. Allekotte</a>, <a href="/search/physics?searchtype=author&query=Allen%2C+J">J. Allen</a>, <a href="/search/physics?searchtype=author&query=Allison%2C+P">P. Allison</a>, <a href="/search/physics?searchtype=author&query=Castillo%2C+J+A">J. Alvarez Castillo</a>, <a href="/search/physics?searchtype=author&query=Alvarez-Mu%C3%B1iz%2C+J">J. Alvarez-Mu帽iz</a>, <a href="/search/physics?searchtype=author&query=Ambrosio%2C+M">M. Ambrosio</a>, <a href="/search/physics?searchtype=author&query=Aminaei%2C+A">A. Aminaei</a>, <a href="/search/physics?searchtype=author&query=Anchordoqui%2C+L">L. Anchordoqui</a>, <a href="/search/physics?searchtype=author&query=Andringa%2C+S">S. Andringa</a>, <a href="/search/physics?searchtype=author&query=Anti%C4%8Di%C4%87%2C+T">T. Anti膷i膰</a>, <a href="/search/physics?searchtype=author&query=Anzalone%2C+A">A. Anzalone</a>, <a href="/search/physics?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/physics?searchtype=author&query=Arganda%2C+E">E. Arganda</a>, <a href="/search/physics?searchtype=author&query=Arqueros%2C+F">F. Arqueros</a>, <a href="/search/physics?searchtype=author&query=Asorey%2C+H">H. Asorey</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Avenier%2C+M">M. Avenier</a> , et al. (471 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="1107.4806v1-abstract-short" style="display: inline;"> Technical reports on operations and monitoring of the Pierre Auger Observatory </span> <span class="abstract-full has-text-grey-dark mathjax" id="1107.4806v1-abstract-full" style="display: none;"> Technical reports on operations and monitoring of the Pierre Auger Observatory <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1107.4806v1-abstract-full').style.display = 'none'; document.getElementById('1107.4806v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 July, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">Constributions to 32nd International Cosmic Ray Conference, Beijing, China, August 2011</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1002.3300">arXiv:1002.3300</a> <span> [<a href="https://arxiv.org/pdf/1002.3300">pdf</a>, <a href="https://arxiv.org/ps/1002.3300">ps</a>, <a href="https://arxiv.org/format/1002.3300">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-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/10.1063/1.3356059">10.1063/1.3356059 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Temporal dynamics in the one-dimensional quantum Zakharov equations for plasmas </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Misra%2C+A+P">A. P. Misra</a>, <a href="/search/physics?searchtype=author&query=Banerjee%2C+S">S. Banerjee</a>, <a href="/search/physics?searchtype=author&query=Haas%2C+F">F. Haas</a>, <a href="/search/physics?searchtype=author&query=Shukla%2C+P+K">P. K. Shukla</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+L+P+G">L. P. G. Assis</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="1002.3300v1-abstract-short" style="display: inline;"> The temporal dynamics of the quantum Zakharov equations (QZEs) in one spatial dimension, which describes the nonlinear interaction of quantum Langmuir waves (QLWs) and quantum ion-acoustic waves (QIAWs) is revisited by considering their solution as a superposition of three interacting wave modes in Fourier space. Previous results in the literature are modified and rectified. Periodic, chaotic as… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1002.3300v1-abstract-full').style.display = 'inline'; document.getElementById('1002.3300v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1002.3300v1-abstract-full" style="display: none;"> The temporal dynamics of the quantum Zakharov equations (QZEs) in one spatial dimension, which describes the nonlinear interaction of quantum Langmuir waves (QLWs) and quantum ion-acoustic waves (QIAWs) is revisited by considering their solution as a superposition of three interacting wave modes in Fourier space. Previous results in the literature are modified and rectified. Periodic, chaotic as well as hyperchaotic behaviors of the Fourier-mode amplitudes are identified by the analysis of Lyapunov exponent spectra and the power spectrum. The periodic route to chaos is explained through an one-parameter bifurcation analysis. The system is shown to be destabilized via a supercritical Hopf-bifurcation. The adiabatic limits of the fully spatio-temporal and reduced systems are compared from the viewpoint of integrability properties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1002.3300v1-abstract-full').style.display = 'none'; document.getElementById('1002.3300v1-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> 17 February, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">7 pages, 8 figures. Physics of Plasmas, in press (2010)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics of Plasmas 17, 032307 (2010) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0712.1548">arXiv:0712.1548</a> <span> [<a href="https://arxiv.org/pdf/0712.1548">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Astrophysics">astro-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> </div> <p class="title is-5 mathjax"> Science with the new generation high energy gamma- ray experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/physics?searchtype=author&query=D%27Armiento%2C+D">D. D'Armiento</a>, <a href="/search/physics?searchtype=author&query=Agnetta%2C+G">G. Agnetta</a>, <a href="/search/physics?searchtype=author&query=Alberdi%2C+A">A. Alberdi</a>, <a href="/search/physics?searchtype=author&query=Antonelli%2C+A">A. Antonelli</a>, <a href="/search/physics?searchtype=author&query=Argan%2C+A">A. Argan</a>, <a href="/search/physics?searchtype=author&query=Assis%2C+P">P. Assis</a>, <a href="/search/physics?searchtype=author&query=Baltz%2C+E+A">E. A. Baltz</a>, <a href="/search/physics?searchtype=author&query=Bambi%2C+C">C. Bambi</a>, <a href="/search/physics?searchtype=author&query=Barbiellini%2C+G">G. Barbiellini</a>, <a href="/search/physics?searchtype=author&query=Bartko%2C+H">H. Bartko</a>, <a href="/search/physics?searchtype=author&query=Basset%2C+M">M. Basset</a>, <a href="/search/physics?searchtype=author&query=Bastieri%2C+D">D. Bastieri</a>, <a href="/search/physics?searchtype=author&query=Belli%2C+P">P. Belli</a>, <a href="/search/physics?searchtype=author&query=Benford%2C+G">G. Benford</a>, <a href="/search/physics?searchtype=author&query=Bergstrom%2C+L">L. Bergstrom</a>, <a href="/search/physics?searchtype=author&query=Bernabei%2C+R">R. Bernabei</a>, <a href="/search/physics?searchtype=author&query=Bertone%2C+G">G. Bertone</a>, <a href="/search/physics?searchtype=author&query=Biland%2C+A">A. Biland</a>, <a href="/search/physics?searchtype=author&query=Biondo%2C+B">B. Biondo</a>, <a href="/search/physics?searchtype=author&query=Bocchino%2C+F">F. Bocchino</a>, <a href="/search/physics?searchtype=author&query=Branchini%2C+E">E. Branchini</a>, <a href="/search/physics?searchtype=author&query=Brigida%2C+M">M. Brigida</a>, <a href="/search/physics?searchtype=author&query=Bringmann%2C+T">T. Bringmann</a>, <a href="/search/physics?searchtype=author&query=Brogueira%2C+P">P. Brogueira</a> , et al. (175 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="0712.1548v1-abstract-short" style="display: inline;"> This Conference is the fifth of a series of Workshops on High Energy Gamma- ray Experiments, following the Conferences held in Perugia 2003, Bari 2004, Cividale del Friuli 2005, Elba Island 2006. This year the focus was on the use of gamma-ray to study the Dark Matter component of the Universe, the origin and propagation of Cosmic Rays, Extra Large Spatial Dimensions and Tests of Lorentz Invaria… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0712.1548v1-abstract-full').style.display = 'inline'; document.getElementById('0712.1548v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0712.1548v1-abstract-full" style="display: none;"> This Conference is the fifth of a series of Workshops on High Energy Gamma- ray Experiments, following the Conferences held in Perugia 2003, Bari 2004, Cividale del Friuli 2005, Elba Island 2006. This year the focus was on the use of gamma-ray to study the Dark Matter component of the Universe, the origin and propagation of Cosmic Rays, Extra Large Spatial Dimensions and Tests of Lorentz Invariance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0712.1548v1-abstract-full').style.display = 'none'; document.getElementById('0712.1548v1-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 December, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">328 pages, 7.8Mb, Proceedings of the 5th SCINEGHE Workshop, June 18-20, 2007 http://www.roma2.infn.it/SciNeGHE07/</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Frascati Physics Series vol.45 (2007) A.Lionetto, A.Morselli editors ISBN 978-88-86409-54-0 </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 is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 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