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</div> <div class="control"> <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/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/2010.08370">arXiv:2010.08370</a> <span> [<a href="https://arxiv.org/pdf/2010.08370">pdf</a>, <a href="https://arxiv.org/format/2010.08370">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/10.1088/1748-0221/16/03/P03007">10.1088/1748-0221/16/03/P03007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of scintillation light collection, production and propagation in a 4 tonne dual-phase LArTPC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Aimard%2C+B">B. Aimard</a>, <a href="/search/physics?searchtype=author&query=Aizawa%2C+L">L. Aizawa</a>, <a href="/search/physics?searchtype=author&query=Alt%2C+C">C. Alt</a>, <a href="/search/physics?searchtype=author&query=Asaadi%2C+J">J. Asaadi</a>, <a href="/search/physics?searchtype=author&query=Auger%2C+M">M. Auger</a>, <a href="/search/physics?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/physics?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/physics?searchtype=author&query=Balaceanu%2C+A">A. Balaceanu</a>, <a href="/search/physics?searchtype=author&query=Balik%2C+G">G. Balik</a>, <a href="/search/physics?searchtype=author&query=Balleyguier%2C+L">L. Balleyguier</a>, <a href="/search/physics?searchtype=author&query=Bechetoille%2C+E">E. Bechetoille</a>, <a href="/search/physics?searchtype=author&query=Belver%2C+D">D. Belver</a>, <a href="/search/physics?searchtype=author&query=Blebea-Apostu%2C+A+M">A. M. Blebea-Apostu</a>, <a href="/search/physics?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/physics?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/physics?searchtype=author&query=Bourgeois%2C+N">N. Bourgeois</a>, <a href="/search/physics?searchtype=author&query=Bourguille%2C+B">B. Bourguille</a>, <a href="/search/physics?searchtype=author&query=Bremer%2C+J">J. Bremer</a>, <a href="/search/physics?searchtype=author&query=Brown%2C+G">G. Brown</a>, <a href="/search/physics?searchtype=author&query=Brunetti%2C+G">G. Brunetti</a>, <a href="/search/physics?searchtype=author&query=Brunetti%2C+L">L. Brunetti</a>, <a href="/search/physics?searchtype=author&query=Caiulo%2C+D">D. Caiulo</a>, <a href="/search/physics?searchtype=author&query=Calin%2C+M">M. Calin</a>, <a href="/search/physics?searchtype=author&query=Calvo%2C+E">E. Calvo</a>, <a href="/search/physics?searchtype=author&query=Campanelli%2C+M">M. Campanelli</a> , et al. (138 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="2010.08370v3-abstract-short" style="display: inline;"> The $3 \times 1 \times 1$ m$^3$ demonstrator is a dual phase liquid argon time projection chamber that has recorded cosmic rays events in 2017 at CERN. The light signal in these detectors is crucial to provide precise timing capabilities. The performances of the photon detection system, composed of five PMTs, are discussed. The collected scintillation and electroluminescence light created by passi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.08370v3-abstract-full').style.display = 'inline'; document.getElementById('2010.08370v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.08370v3-abstract-full" style="display: none;"> The $3 \times 1 \times 1$ m$^3$ demonstrator is a dual phase liquid argon time projection chamber that has recorded cosmic rays events in 2017 at CERN. The light signal in these detectors is crucial to provide precise timing capabilities. The performances of the photon detection system, composed of five PMTs, are discussed. The collected scintillation and electroluminescence light created by passing particles has been studied in various detector conditions. In particular, the scintillation light production and propagation processes have been analyzed and compared to simulations, improving the understanding of some liquid argon properties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.08370v3-abstract-full').style.display = 'none'; document.getElementById('2010.08370v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">30 pages, 26 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/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/1806.03317">arXiv:1806.03317</a> <span> [<a href="https://arxiv.org/pdf/1806.03317">pdf</a>, <a href="https://arxiv.org/format/1806.03317">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/10.1088/1748-0221/13/11/P11003">10.1088/1748-0221/13/11/P11003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A 4 tonne demonstrator for large-scale dual-phase liquid argon time projection chambers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Aimard%2C+B">B. Aimard</a>, <a href="/search/physics?searchtype=author&query=Alt%2C+C">Ch. Alt</a>, <a href="/search/physics?searchtype=author&query=Asaadi%2C+J">J. Asaadi</a>, <a href="/search/physics?searchtype=author&query=Auger%2C+M">M. Auger</a>, <a href="/search/physics?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/physics?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/physics?searchtype=author&query=Badoi%2C+M+M">M. M. Badoi</a>, <a href="/search/physics?searchtype=author&query=Balaceanu%2C+A">A. Balaceanu</a>, <a href="/search/physics?searchtype=author&query=Balik%2C+G">G. Balik</a>, <a href="/search/physics?searchtype=author&query=Balleyguier%2C+L">L. Balleyguier</a>, <a href="/search/physics?searchtype=author&query=Bechetoille%2C+E">E. Bechetoille</a>, <a href="/search/physics?searchtype=author&query=Belver%2C+D">D. Belver</a>, <a href="/search/physics?searchtype=author&query=Blebea-Apostu%2C+A+M">A. M. Blebea-Apostu</a>, <a href="/search/physics?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/physics?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/physics?searchtype=author&query=Bourgeois%2C+N">N. Bourgeois</a>, <a href="/search/physics?searchtype=author&query=Bourguille%2C+B">B. Bourguille</a>, <a href="/search/physics?searchtype=author&query=Bremer%2C+J">J. Bremer</a>, <a href="/search/physics?searchtype=author&query=Brown%2C+G">G. Brown</a>, <a href="/search/physics?searchtype=author&query=Brunetti%2C+G">G. Brunetti</a>, <a href="/search/physics?searchtype=author&query=Brunetti%2C+L">L. Brunetti</a>, <a href="/search/physics?searchtype=author&query=Caiulo%2C+D">D. Caiulo</a>, <a href="/search/physics?searchtype=author&query=Calin%2C+M">M. Calin</a>, <a href="/search/physics?searchtype=author&query=Calvo%2C+E">E. Calvo</a>, <a href="/search/physics?searchtype=author&query=Campanelli%2C+M">M. Campanelli</a> , et al. (147 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1806.03317v3-abstract-short" style="display: inline;"> A 10 kilo-tonne dual-phase liquid argon TPC is one of the detector options considered for the Deep Underground Neutrino Experiment (DUNE). The detector technology relies on amplification of the ionisation charge in ultra-pure argon vapour and oers several advantages compared to the traditional single-phase liquid argon TPCs. A 4.2 tonne dual-phase liquid argon TPC prototype, the largest of its kin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.03317v3-abstract-full').style.display = 'inline'; document.getElementById('1806.03317v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1806.03317v3-abstract-full" style="display: none;"> A 10 kilo-tonne dual-phase liquid argon TPC is one of the detector options considered for the Deep Underground Neutrino Experiment (DUNE). The detector technology relies on amplification of the ionisation charge in ultra-pure argon vapour and oers several advantages compared to the traditional single-phase liquid argon TPCs. A 4.2 tonne dual-phase liquid argon TPC prototype, the largest of its kind, with an active volume of 3x1x1 $m^3$ has been constructed and operated at CERN. In this paper we describe in detail the experimental setup and detector components as well as report on the operation experience. We also present the first results on the achieved charge amplification, prompt scintillation and electroluminescence detection, and purity of the liquid argon from analyses of a collected sample of cosmic ray muons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.03317v3-abstract-full').style.display = 'none'; document.getElementById('1806.03317v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2018. </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/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/1603.05650">arXiv:1603.05650</a> <span> [<a href="https://arxiv.org/pdf/1603.05650">pdf</a>, <a href="https://arxiv.org/format/1603.05650">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> A feasibility study to track cosmic muons using a detector with SiPM devices based on amplitude discrimination </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Stanca%2C+D">D. Stanca</a>, <a href="/search/physics?searchtype=author&query=Niculescu-Oglinzanu%2C+M">M. Niculescu-Oglinzanu</a>, <a href="/search/physics?searchtype=author&query=Brancus%2C+I">I. Brancus</a>, <a href="/search/physics?searchtype=author&query=Mitrica%2C+B">B. Mitrica</a>, <a href="/search/physics?searchtype=author&query=Balaceanu%2C+A">A. Balaceanu</a>, <a href="/search/physics?searchtype=author&query=Cautisanu%2C+B">B. Cautisanu</a>, <a href="/search/physics?searchtype=author&query=Gherghel-Lascu%2C+A">A. Gherghel-Lascu</a>, <a href="/search/physics?searchtype=author&query=Haungs%2C+A">A. Haungs</a>, <a href="/search/physics?searchtype=author&query=Mathes%2C+H+-">H. -J. Mathes</a>, <a href="/search/physics?searchtype=author&query=Rebel%2C+H">H. Rebel</a>, <a href="/search/physics?searchtype=author&query=Saftoiu%2C+A">A. Saftoiu</a>, <a href="/search/physics?searchtype=author&query=Sima%2C+O">O. Sima</a>, <a href="/search/physics?searchtype=author&query=Mosu%2C+T">T. Mosu</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="1603.05650v1-abstract-short" style="display: inline;"> The possibility to build a SiPM-readout muon detector (SiRO), using plastic scintillators with optical fibers as sensitive volume and readout by SiPM photo-diodes, is investigated. SiRO shall be used for tracking cosmic muons based on amplitude discrimination. The detector concept foresees a stack of 6 active layers, grouped in 3 sandwiches for determining the muon trajectories through 3 planes. A… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.05650v1-abstract-full').style.display = 'inline'; document.getElementById('1603.05650v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.05650v1-abstract-full" style="display: none;"> The possibility to build a SiPM-readout muon detector (SiRO), using plastic scintillators with optical fibers as sensitive volume and readout by SiPM photo-diodes, is investigated. SiRO shall be used for tracking cosmic muons based on amplitude discrimination. The detector concept foresees a stack of 6 active layers, grouped in 3 sandwiches for determining the muon trajectories through 3 planes. After investigating the characteristics of the photodiodes, tests have been performed using two detection modules, each being composed from a plastic scintillator sheet, $100 \times 25 \times 1\,$cm$^{3}$, with 12 parallel, equidistant ditches; each ditch filled with an optical fiber of $1.5\,$mm thickness and always two fibers connected to form a channel. The attenuation of the light response along the optical fiber and across the channels have been tested. The measurements of the incident muons based on the input amplitude discrimination indicate that this procedure is not efficient and therefore not sufficient, as only about 30\% of the measured events could be used in the reconstruction of the muon trajectories. Based on the studies presented in this paper, the layout used for building the SiRO detector will be changed as well as the analog acquisition technique will be replaced by a digital one. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.05650v1-abstract-full').style.display = 'none'; document.getElementById('1603.05650v1-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 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </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 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