Search | arXiv e-print repository

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1"/>  <link rel="apple-touch-icon" sizes="180x180" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-16x16.png"> <link rel="manifest" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/site.webmanifest"> <link rel="mask-icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/safari-pinned-tab.svg" color="#b31b1b"> <link rel="shortcut icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon.ico"> <meta name="msapplication-TileColor" content="#b31b1b"> <meta name="msapplication-config" content="images/icons/browserconfig.xml"> <meta name="theme-color" content="#b31b1b">  <title>Search | arXiv e-print repository</title> <script defer src="https://static.arxiv.org/static/base/1.0.0a5/fontawesome-free-5.11.2-web/js/all.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/base/1.0.0a5/css/arxivstyle.css" /> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ messageStyle: "none", extensions: ["tex2jax.js"], jax: ["input/TeX", "output/HTML-CSS"], tex2jax: { inlineMath: [ ['$','$'], ["\$","\$"] ], displayMath: [ ['$$','$$'], ["\\[","\\]"] ], processEscapes: true, ignoreClass: '.*', processClass: 'mathjax.*' }, TeX: { extensions: ["AMSmath.js", "AMSsymbols.js", "noErrors.js"], noErrors: { inlineDelimiters: ["$","$"], multiLine: false, style: { "font-size": "normal", "border": "" } } }, "HTML-CSS": { availableFonts: ["TeX"] } }); </script> <script src='//static.arxiv.org/MathJax-2.7.3/MathJax.js'></script> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/notification.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/bulma-tooltip.min.css" /> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/search.css" /> <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha256-k2WSCIexGzOj3Euiig+TlR8gA0EmPjuc79OEeY5L45g=" crossorigin="anonymous"></script> <script src="https://static.arxiv.org/static/search/0.5.6/js/fieldset.js"></script> <style> radio#cf-customfield_11400 { display: none; } </style> </head> <body> <header><a href="#main-container" class="is-sr-only">Skip to main content</a>  <div class="attribution level is-marginless" role="banner"> <div class="level-left"> <a class="level-item" href="https://cornell.edu/"><img src="https://static.arxiv.org/static/base/1.0.0a5/images/cornell-reduced-white-SMALL.svg" alt="Cornell University" width="200" aria-label="logo" /></a> </div> <div class="level-right is-marginless"><p class="sponsors level-item is-marginless"><span id="support-ack-url">We gratefully acknowledge support from<br /> the Simons Foundation, <a href="https://info.arxiv.org/about/ourmembers.html">member institutions</a>, and all contributors. <a href="https://info.arxiv.org/about/donate.html">Donate</a></span></p></div> </div>  <div class="identity level is-marginless"> <div class="level-left"> <div class="level-item"> <a class="arxiv" href="https://arxiv.org/" aria-label="arxiv-logo"> <img src="https://static.arxiv.org/static/base/1.0.0a5/images/arxiv-logo-one-color-white.svg" aria-label="logo" alt="arxiv logo" width="85" style="width:85px;"/> </a> </div> </div> <div class="search-block level-right"> <form class="level-item mini-search" method="GET" action="https://arxiv.org/search"> <div class="field has-addons"> <div class="control"> <input class="input is-small" type="text" name="query" placeholder="Search..." aria-label="Search term or terms" /> <p class="help"><a href="https://info.arxiv.org/help">Help</a> | <a href="https://arxiv.org/search/advanced">Advanced Search</a></p> </div> <div class="control"> <div class="select is-small"> <select name="searchtype" aria-label="Field to search"> <option value="all" selected="selected">All fields</option> <option value="title">Title</option> <option value="author">Author</option> <option value="abstract">Abstract</option> <option value="comments">Comments</option> <option value="journal_ref">Journal reference</option> <option value="acm_class">ACM classification</option> <option value="msc_class">MSC classification</option> <option value="report_num">Report number</option> <option value="paper_id">arXiv identifier</option> <option value="doi">DOI</option> <option value="orcid">ORCID</option> <option value="author_id">arXiv author ID</option> <option value="help">Help pages</option> <option value="full_text">Full text</option> </select> </div> </div> <input type="hidden" name="source" value="header"> <button class="button is-small is-cul-darker">Search</button> </div> </form> </div> </div>  <div class="container"> <div class="user-tools is-size-7 has-text-right has-text-weight-bold" role="navigation" aria-label="User menu"> <a href="https://arxiv.org/login">Login</a> </div> </div> </header> <main class="container" id="main-container"> <div class="level is-marginless"> <div class="level-left"> <h1 class="title is-clearfix"> Showing 1–50 of 59 results for author: <span class="mathjax">Bondar, A</span> </h1> </div> <div class="level-right is-hidden-mobile">  <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> <div class="content"> <form method="GET" action="/search/physics" aria-role="search"> Searching in archive <strong>physics</strong>. <a href="/search/?searchtype=author&query=Bondar%2C+A">Search in all archives.</a> <div class="field has-addons-tablet"> <div class="control is-expanded"> <label for="query" class="hidden-label">Search term or terms</label> <input class="input is-medium" id="query" name="query" placeholder="Search term..." type="text" value="Bondar, A"> </div> <div class="select control is-medium"> <label class="is-hidden" for="searchtype">Field</label> <select class="is-medium" id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> </div> <div class="control"> <button class="button is-link is-medium">Search</button> </div> </div> <div class="field"> <div class="control is-size-7"> <label class="radio"> <input checked id="abstracts-0" name="abstracts" type="radio" value="show"> Show abstracts </label> <label class="radio"> <input id="abstracts-1" name="abstracts" type="radio" value="hide"> Hide abstracts </label> </div> </div> <div class="is-clearfix" style="height: 2.5em"> <div class="is-pulled-right"> <a href="/search/advanced?terms-0-term=Bondar%2C+A&terms-0-field=author&size=50&order=-announced_date_first">Advanced Search</a> </div> </div> <input type="hidden" name="order" value="-announced_date_first"> <input type="hidden" name="size" value="50"> </form> <div class="level breathe-horizontal"> <div class="level-left"> <form method="GET" action="/search/"> <div style="display: none;"> <select id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> <input id="query" name="query" type="text" value="Bondar, A"> <ul id="abstracts"><li><input checked id="abstracts-0" name="abstracts" type="radio" value="show"> <label for="abstracts-0">Show abstracts</label></li><li><input id="abstracts-1" name="abstracts" type="radio" value="hide"> <label for="abstracts-1">Hide abstracts</label></li></ul> </div> <div class="box field is-grouped is-grouped-multiline level-item"> <div class="control"> <span class="select is-small"> <select id="size" name="size"><option value="25">25</option><option selected value="50">50</option><option value="100">100</option><option value="200">200</option></select> </span> <label for="size">results per page</label>. </div> <div class="control"> <label for="order">Sort results by</label> <span class="select is-small"> <select id="order" name="order"><option selected value="-announced_date_first">Announcement date (newest first)</option><option value="announced_date_first">Announcement date (oldest first)</option><option value="-submitted_date">Submission date (newest first)</option><option value="submitted_date">Submission date (oldest first)</option><option value="">Relevance</option></select> </span> </div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Bondar%2C+A&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Bondar%2C+A&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Bondar%2C+A&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.04483">arXiv:2411.04483</a> <span> [<a href="https://arxiv.org/pdf/2411.04483">pdf</a>, <a href="https://arxiv.org/format/2411.04483">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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Recent results on the low-pressure GEM-based TPC at an Accelerator Mass Spectrometer </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Parkhomchuk%2C+V">V. Parkhomchuk</a>, <a href="/search/physics?searchtype=author&query=Petrozhitsky%2C+A">A. Petrozhitsky</a>, <a href="/search/physics?searchtype=author&query=Shakirova%2C+T">T. Shakirova</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="2411.04483v1-abstract-short" style="display: inline;"> The Accelerator Mass Spectrometry technique makes it possible to measure rare long-lived isotopes such as $^{10}$Be, $^{14}$C, $^{26}$Al, $^{36}$Cl, $^{41}$Ca and $^{129}$I. The content of these isotopes can be at the level of 10$^{-15}$ of the total element content. The Accelerator Mass Spectrometer developed by Budker Institute of Nuclear Physics (BINP AMS) successfully measures the concentratio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.04483v1-abstract-full').style.display = 'inline'; document.getElementById('2411.04483v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.04483v1-abstract-full" style="display: none;"> The Accelerator Mass Spectrometry technique makes it possible to measure rare long-lived isotopes such as $^{10}$Be, $^{14}$C, $^{26}$Al, $^{36}$Cl, $^{41}$Ca and $^{129}$I. The content of these isotopes can be at the level of 10$^{-15}$ of the total element content. The Accelerator Mass Spectrometer developed by Budker Institute of Nuclear Physics (BINP AMS) successfully measures the concentration of $^{14}$C relative $^{12}$C. However, there is a problem of separating the $^{10}$B isobaric background from $^{10}$Be. Beryllium-10 is used to date geological objects on a time scale from 1 thousand years to 10 million years. To solve this problem we have proposed a new technique for ion identification based on measuring both ion track ranges and ion energies in a low-pressure Time-Projection Chamber (TPC) with Gas Electron Multiplier (GEM) readout. We have developed the TPC with a dedicated thin silicon nitride window for an efficient passage of ions. To begin with, the characteristic of the low-pressure TPC were studied in isobutane at a pressure of 50 torr using alpha particle sources. In this work, we set up the low-pressure TPC on BINP AMS facility and successfully measured track ranges and energies of ions from samples containing $^{14}$C. At the next stage, we are going to carry out measurements with samples containing $^{10}$Be. However, using the obtained results and SRIM simulation we have already shown that the isobaric boron and beryllium ions can be separated by more than 5 sigma. This technique is proposed to be applied in AMS for dating geological objects, namely for geochronology of Cenozoic era. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.04483v1-abstract-full').style.display = 'none'; document.getElementById('2411.04483v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.08084">arXiv:2305.08084</a> <span> [<a href="https://arxiv.org/pdf/2305.08084">pdf</a>, <a href="https://arxiv.org/format/2305.08084">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.131.241001">10.1103/PhysRevLett.131.241001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of neutral bremsstrahlung electroluminescence in liquid argon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Borisova%2C+E">E. Borisova</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="2305.08084v2-abstract-short" style="display: inline;"> A recent discovery of additional mechanism of electroluminescence (EL) in noble gases due to the neutral bremsstrahlung (NBrS) effect led to a prediction that NBrS EL should be present in noble liquids as well. A theoretical model of NBrS EL in noble liquids was developed accordingly in the frameworks of Cohen-Lekner and Atrazhev. In this work, we confirm this prediction: for the first time, visib… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.08084v2-abstract-full').style.display = 'inline'; document.getElementById('2305.08084v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.08084v2-abstract-full" style="display: none;"> A recent discovery of additional mechanism of electroluminescence (EL) in noble gases due to the neutral bremsstrahlung (NBrS) effect led to a prediction that NBrS EL should be present in noble liquids as well. A theoretical model of NBrS EL in noble liquids was developed accordingly in the frameworks of Cohen-Lekner and Atrazhev. In this work, we confirm this prediction: for the first time, visible-range EL has been observed in liquid argon at electric fields reaching 90~kV/cm, using Gas Electron Multiplier (GEM) and Thick GEM (THGEM) structures. Absolute light yields of the EL were measured and found to be in excellent agreement with the theory, provided that the momentum-transfer cross section of electron scattering is used for calculation of NBrS cross section (instead of the energy-transfer one). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.08084v2-abstract-full').style.display = 'none'; document.getElementById('2305.08084v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">6 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 131, 241001 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.06684">arXiv:2305.06684</a> <span> [<a href="https://arxiv.org/pdf/2305.06684">pdf</a>, <a href="https://arxiv.org/format/2305.06684">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/18/05/C05015">10.1088/1748-0221/18/05/C05015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> New technique of ion identification in Accelerator Mass Spectrometry using low-pressure TPC with GEM readout </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Parkhomchuk%2C+V">V. Parkhomchuk</a>, <a href="/search/physics?searchtype=author&query=Petrozhitsky%2C+A">A. Petrozhitsky</a>, <a href="/search/physics?searchtype=author&query=Shakirova%2C+T">T. Shakirova</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="2305.06684v1-abstract-short" style="display: inline;"> We have developed and successfully tested a low-pressure Time Projection Chamber (TPC) with Gas Electron Multiplier (GEM) readout for Accelerator Mass Spectrometry (AMS). AMS facility in Novosibirsk has a problem of separating isobar ions of different chemical elements that have the same atomic mass. The typical example is radioactive isotopes 10Be and 10B that are used to date geological object… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.06684v1-abstract-full').style.display = 'inline'; document.getElementById('2305.06684v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.06684v1-abstract-full" style="display: none;"> We have developed and successfully tested a low-pressure Time Projection Chamber (TPC) with Gas Electron Multiplier (GEM) readout for Accelerator Mass Spectrometry (AMS). AMS facility in Novosibirsk has a problem of separating isobar ions of different chemical elements that have the same atomic mass. The typical example is radioactive isotopes 10Be and 10B that are used to date geological objects at a time scale of ten million years. To solve this problem, a new ion identification technique, namely that based on measuring both ion track ranges and ion energies in low-pressure TPCs with GEM readout, has been developed. This technique is proposed to be applied in AMS for dating geological objects, namely for geochronology of Cenozoic era. In this work, we developed a new larger version of the TPC with a dedicated thin silicon nitride window for an efficient passage of ions. The TPC characteristics were studied in isobutane at low pressures using alpha particle sources. In addition, the use of GEM instead of THGEM has been shown to substantially improve the energy resolution at a nominal pressure (50 torr). Using these results and SRIM code simulations, it is shown that isobaric boron and beryllium ions can be effectively separated at AMS, providing efficient dating on a scale of ten million years. This technique will be applied in the AMS facility in Novosibirsk in the near future. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.06684v1-abstract-full').style.display = 'none'; document.getElementById('2305.06684v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.15790">arXiv:2303.15790</a> <span> [<a href="https://arxiv.org/pdf/2303.15790">pdf</a>, <a href="https://arxiv.org/format/2303.15790">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s11467-023-1333-z">10.1007/s11467-023-1333-z <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> STCF Conceptual Design Report: Volume 1 -- Physics & Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Achasov%2C+M">M. Achasov</a>, <a href="/search/physics?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/physics?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/physics?searchtype=author&query=An%2C+L+P">L. P. An</a>, <a href="/search/physics?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/physics?searchtype=author&query=Bai%2C+X+Z">X. Z. Bai</a>, <a href="/search/physics?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/physics?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/physics?searchtype=author&query=Barnyakov%2C+A">A. Barnyakov</a>, <a href="/search/physics?searchtype=author&query=Blinov%2C+V">V. Blinov</a>, <a href="/search/physics?searchtype=author&query=Bobrovnikov%2C+V">V. Bobrovnikov</a>, <a href="/search/physics?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/physics?searchtype=author&query=Bogomyagkov%2C+A">A. Bogomyagkov</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/physics?searchtype=author&query=Bu%2C+Z+H">Z. H. Bu</a>, <a href="/search/physics?searchtype=author&query=Cai%2C+F+M">F. M. Cai</a>, <a href="/search/physics?searchtype=author&query=Cai%2C+H">H. Cai</a>, <a href="/search/physics?searchtype=author&query=Cao%2C+J+J">J. J. Cao</a>, <a href="/search/physics?searchtype=author&query=Cao%2C+Q+H">Q. H. Cao</a>, <a href="/search/physics?searchtype=author&query=Cao%2C+Z">Z. Cao</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+Q">Q. Chang</a>, <a href="/search/physics?searchtype=author&query=Chao%2C+K+T">K. T. Chao</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+D+Y">D. Y. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+H">H. Chen</a> , et al. (413 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="2303.15790v3-abstract-short" style="display: inline;"> The Super $蟿$-Charm facility (STCF) is an electron-positron collider proposed by the Chinese particle physics community. It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of $0.5\times 10^{35}{\rm cm}^{-2}{\rm s}^{-1}$ or higher. The STCF will produce a data sample about a factor of 100 larger than that by the present $蟿$-Charm factory -- the BEPCII,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.15790v3-abstract-full').style.display = 'inline'; document.getElementById('2303.15790v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.15790v3-abstract-full" style="display: none;"> The Super $蟿$-Charm facility (STCF) is an electron-positron collider proposed by the Chinese particle physics community. It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of $0.5\times 10^{35}{\rm cm}^{-2}{\rm s}^{-1}$ or higher. The STCF will produce a data sample about a factor of 100 larger than that by the present $蟿$-Charm factory -- the BEPCII, providing a unique platform for exploring the asymmetry of matter-antimatter (charge-parity violation), in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions, as well as searching for exotic hadrons and physics beyond the Standard Model. The STCF project in China is under development with an extensive R\&D program. This document presents the physics opportunities at the STCF, describes conceptual designs of the STCF detector system, and discusses future plans for detector R\&D and physics case studies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.15790v3-abstract-full').style.display = 'none'; document.getElementById('2303.15790v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Front. Phys. 19(1), 14701 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.01177">arXiv:2209.01177</a> <span> [<a href="https://arxiv.org/pdf/2209.01177">pdf</a>, <a href="https://arxiv.org/format/2209.01177">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.107.112006">10.1103/PhysRevD.107.112006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agnes%2C+P">P. Agnes</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+I">I. Ahmad</a>, <a href="/search/physics?searchtype=author&query=Albergo%2C+S">S. Albergo</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=Alexander%2C+T">T. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alton%2C+A+K">A. K. Alton</a>, <a href="/search/physics?searchtype=author&query=Amaudruz%2C+P">P. Amaudruz</a>, <a href="/search/physics?searchtype=author&query=Corona%2C+M+A">M. Atzori Corona</a>, <a href="/search/physics?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Avetisov%2C+I+C">I. Ch. Avetisov</a>, <a href="/search/physics?searchtype=author&query=Avetisov%2C+R+I">R. I. Avetisov</a>, <a href="/search/physics?searchtype=author&query=Azzolini%2C+O">O. Azzolini</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H+O">H. O. Back</a>, <a href="/search/physics?searchtype=author&query=Balmforth%2C+Z">Z. Balmforth</a>, <a href="/search/physics?searchtype=author&query=Barbarian%2C+V">V. Barbarian</a>, <a href="/search/physics?searchtype=author&query=Olmedo%2C+A+B">A. Barrado Olmedo</a>, <a href="/search/physics?searchtype=author&query=Barrillon%2C+P">P. Barrillon</a>, <a href="/search/physics?searchtype=author&query=Basco%2C+A">A. Basco</a>, <a href="/search/physics?searchtype=author&query=Batignani%2C+G">G. Batignani</a>, <a href="/search/physics?searchtype=author&query=Berzin%2C+E">E. Berzin</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Bonivento%2C+W+M">W. M. Bonivento</a>, <a href="/search/physics?searchtype=author&query=Borisova%2C+E">E. Borisova</a>, <a href="/search/physics?searchtype=author&query=Bottino%2C+B">B. Bottino</a> , et al. (274 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="2209.01177v2-abstract-short" style="display: inline;"> Dark matter lighter than 10 GeV/c$^2$ encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50 detector and progress toward DarkSide-20k, optimized for a low-threshold electron-counting measurement. Sensitivity to light dark matter is explored for various potential energy thresholds and background rates. These stu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.01177v2-abstract-full').style.display = 'inline'; document.getElementById('2209.01177v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.01177v2-abstract-full" style="display: none;"> Dark matter lighter than 10 GeV/c$^2$ encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50 detector and progress toward DarkSide-20k, optimized for a low-threshold electron-counting measurement. Sensitivity to light dark matter is explored for various potential energy thresholds and background rates. These studies show that DarkSide-LowMass can achieve sensitivity to light dark matter down to the solar neutrino floor for GeV-scale masses and significant sensitivity down to 10 MeV/c$^2$ considering the Migdal effect or interactions with electrons. Requirements for optimizing the detector's sensitivity are explored, as are potential sensitivity gains from modeling and mitigating spurious electron backgrounds that may dominate the signal at the lowest energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.01177v2-abstract-full').style.display = 'none'; document.getElementById('2209.01177v2-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 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 107, 112006 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.09154">arXiv:2202.09154</a> <span> [<a href="https://arxiv.org/pdf/2202.09154">pdf</a>, <a href="https://arxiv.org/format/2202.09154">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/17/09/P09009">10.1088/1748-0221/17/09/P09009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of visible-light emission in pure and methane-doped liquid argon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Borisova%2C+E">E. Borisova</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="2202.09154v2-abstract-short" style="display: inline;"> In liquid argon TPCs for dark matter search and neutrino detection experiments, primary scintillation light is used as a prompt signal of particle scattering, being intensively produced in the vacuum ultraviolet (VUV) due to excimer emission mechanism. On the other hand, there were indications on the production of visible-light emission in liquid argon, albeit at a much lower intensity, the origin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.09154v2-abstract-full').style.display = 'inline'; document.getElementById('2202.09154v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.09154v2-abstract-full" style="display: none;"> In liquid argon TPCs for dark matter search and neutrino detection experiments, primary scintillation light is used as a prompt signal of particle scattering, being intensively produced in the vacuum ultraviolet (VUV) due to excimer emission mechanism. On the other hand, there were indications on the production of visible-light emission in liquid argon, albeit at a much lower intensity, the origin of which is still not clear. The closely related issue is visible-light emission in liquid argon doped with methane, the interest in which is due to the possible use in neutron veto detectors for those experiments. In this work we study in detail the properties of such light emission in pure liquid argon and its mixtures with methane. In particular, the absolute photon yield of visible-light emission in pure liquid argon was measured to be about 200 and 90 photon/MeV for X-rays and alpha particles respectively. In liquid argon doped with methane the photon yield dropped down significantly, by about an order of magnitude at a methane molar content varying from 0.01 to 1%, and then almost did not change when further increasing the methane content up to 10%. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.09154v2-abstract-full').style.display = 'none'; document.getElementById('2202.09154v2-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 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">22 pages, 15 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 17 (2022) P09009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2101.08686">arXiv:2101.08686</a> <span> [<a href="https://arxiv.org/pdf/2101.08686">pdf</a>, <a href="https://arxiv.org/format/2101.08686">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/10.1140/epjc/s10052-021-09121-9">10.1140/epjc/s10052-021-09121-9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Separating $^{39}$Ar from $^{40}$Ar by cryogenic distillation with Aria for dark matter searches </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=DarkSide+Collaboration"> DarkSide Collaboration</a>, <a href="/search/physics?searchtype=author&query=Agnes%2C+P">P. Agnes</a>, <a href="/search/physics?searchtype=author&query=Albergo%2C+S">S. Albergo</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=Alexander%2C+T">T. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alici%2C+A">A. Alici</a>, <a href="/search/physics?searchtype=author&query=Alton%2C+A+K">A. K. Alton</a>, <a href="/search/physics?searchtype=author&query=Amaudruz%2C+P">P. Amaudruz</a>, <a href="/search/physics?searchtype=author&query=Arba%2C+M">M. Arba</a>, <a href="/search/physics?searchtype=author&query=Arpaia%2C+P">P. Arpaia</a>, <a href="/search/physics?searchtype=author&query=Arcelli%2C+S">S. Arcelli</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Avetissov%2C+I+C">I. Ch. Avetissov</a>, <a href="/search/physics?searchtype=author&query=Avetisov%2C+R+I">R. I. Avetisov</a>, <a href="/search/physics?searchtype=author&query=Azzolini%2C+O">O. Azzolini</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H+O">H. O. Back</a>, <a href="/search/physics?searchtype=author&query=Balmforth%2C+Z">Z. Balmforth</a>, <a href="/search/physics?searchtype=author&query=Barbarian%2C+V">V. Barbarian</a>, <a href="/search/physics?searchtype=author&query=Olmedo%2C+A+B">A. Barrado Olmedo</a>, <a href="/search/physics?searchtype=author&query=Barrillon%2C+P">P. Barrillon</a>, <a href="/search/physics?searchtype=author&query=Basco%2C+A">A. Basco</a>, <a href="/search/physics?searchtype=author&query=Batignani%2C+G">G. Batignani</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Bonivento%2C+W+M">W. M. Bonivento</a>, <a href="/search/physics?searchtype=author&query=Borisova%2C+E">E. Borisova</a> , et al. (287 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="2101.08686v2-abstract-short" style="display: inline;"> The Aria project consists of a plant, hosting a 350 m cryogenic isotopic distillation column, the tallest ever built, which is currently in the installation phase in a mine shaft at Carbosulcis S.p.A., Nuraxi-Figus (SU), Italy. Aria is one of the pillars of the argon dark-matter search experimental program, lead by the Global Argon Dark Matter Collaboration. Aria was designed to reduce the isotopi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.08686v2-abstract-full').style.display = 'inline'; document.getElementById('2101.08686v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2101.08686v2-abstract-full" style="display: none;"> The Aria project consists of a plant, hosting a 350 m cryogenic isotopic distillation column, the tallest ever built, which is currently in the installation phase in a mine shaft at Carbosulcis S.p.A., Nuraxi-Figus (SU), Italy. Aria is one of the pillars of the argon dark-matter search experimental program, lead by the Global Argon Dark Matter Collaboration. Aria was designed to reduce the isotopic abundance of $^{39}$Ar, a $尾$-emitter of cosmogenic origin, whose activity poses background and pile-up concerns in the detectors, in the argon used for the dark-matter searches, the so-called Underground Argon (UAr). In this paper, we discuss the requirements, design, construction, tests, and projected performance of the plant for the isotopic cryogenic distillation of argon. We also present the successful results of isotopic cryogenic distillation of nitrogen with a prototype plant, operating the column at total reflux. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.08686v2-abstract-full').style.display = 'none'; document.getElementById('2101.08686v2-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> 23 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur.Phys.J.C 81 (2021) 4, 359 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.07819">arXiv:2011.07819</a> <span> [<a href="https://arxiv.org/pdf/2011.07819">pdf</a>, <a href="https://arxiv.org/format/2011.07819">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div 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/10.1088/1475-7516/2021/03/043">10.1088/1475-7516/2021/03/043 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agnes%2C+P">P. Agnes</a>, <a href="/search/physics?searchtype=author&query=Albergo%2C+S">S. Albergo</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=Alexander%2C+T">T. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alici%2C+A">A. Alici</a>, <a href="/search/physics?searchtype=author&query=Alton%2C+A+K">A. K. Alton</a>, <a href="/search/physics?searchtype=author&query=Amaudruz%2C+P">P. Amaudruz</a>, <a href="/search/physics?searchtype=author&query=Arcelli%2C+S">S. Arcelli</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Avetissov%2C+I+C">I. Ch. Avetissov</a>, <a href="/search/physics?searchtype=author&query=Avetisov%2C+R+I">R. I. Avetisov</a>, <a href="/search/physics?searchtype=author&query=Azzolini%2C+O">O. Azzolini</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H+O">H. O. Back</a>, <a href="/search/physics?searchtype=author&query=Balmforth%2C+Z">Z. Balmforth</a>, <a href="/search/physics?searchtype=author&query=Barbarian%2C+V">V. Barbarian</a>, <a href="/search/physics?searchtype=author&query=Olmedo%2C+A+B">A. Barrado Olmedo</a>, <a href="/search/physics?searchtype=author&query=Barrillon%2C+P">P. Barrillon</a>, <a href="/search/physics?searchtype=author&query=Basco%2C+A">A. Basco</a>, <a href="/search/physics?searchtype=author&query=Batignani%2C+G">G. Batignani</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Bonivento%2C+W+M">W. M. Bonivento</a>, <a href="/search/physics?searchtype=author&query=Borisova%2C+E">E. Borisova</a>, <a href="/search/physics?searchtype=author&query=Bottino%2C+B">B. Bottino</a>, <a href="/search/physics?searchtype=author&query=Boulay%2C+M+G">M. G. Boulay</a>, <a href="/search/physics?searchtype=author&query=Buccino%2C+G">G. Buccino</a> , et al. (251 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="2011.07819v2-abstract-short" style="display: inline;"> Future liquid-argon DarkSide-20k and ARGO detectors, designed for direct dark matter search, will be sensitive also to core-collapse supernova neutrinos, via coherent elastic neutrino-nucleus scattering. This interaction channel is flavor-insensitive with a high-cross section, enabling for a high-statistics neutrino detection with target masses of $\sim$50~t and $\sim$360~t for DarkSide-20k and AR… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.07819v2-abstract-full').style.display = 'inline'; document.getElementById('2011.07819v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.07819v2-abstract-full" style="display: none;"> Future liquid-argon DarkSide-20k and ARGO detectors, designed for direct dark matter search, will be sensitive also to core-collapse supernova neutrinos, via coherent elastic neutrino-nucleus scattering. This interaction channel is flavor-insensitive with a high-cross section, enabling for a high-statistics neutrino detection with target masses of $\sim$50~t and $\sim$360~t for DarkSide-20k and ARGO, respectively. Thanks to the low-energy threshold of $\sim$0.5~keV$_{nr}$ achievable by exploiting the ionization channel, DarkSide-20k and ARGO have the potential to discover supernova bursts throughout our galaxy and up to the Small Magellanic Cloud, respectively, assuming a 11-M$_{\odot}$ progenitor star. We report also on the sensitivity to the neutronization burst, whose electron neutrino flux is suppressed by oscillations when detected via charged current and elastic scattering. Finally, the accuracies in the reconstruction of the average and total neutrino energy in the different phases of the supernova burst, as well as its time profile, are also discussed, taking into account the expected background and the detector response. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.07819v2-abstract-full').style.display = 'none'; document.getElementById('2011.07819v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 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">21 pages, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JCAP 03 (2021) 043 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.05548">arXiv:2008.05548</a> <span> [<a href="https://arxiv.org/pdf/2008.05548">pdf</a>, <a href="https://arxiv.org/format/2008.05548">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"> Charged particle identification with the liquid xenon calorimeter of the CMD-3 detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ivanov%2C+V+L">V. L. Ivanov</a>, <a href="/search/physics?searchtype=author&query=Fedotovich%2C+G+V">G. V. Fedotovich</a>, <a href="/search/physics?searchtype=author&query=Akhmetshin%2C+R+R">R. R. Akhmetshin</a>, <a href="/search/physics?searchtype=author&query=Amirkhanov%2C+A+N">A. N. Amirkhanov</a>, <a href="/search/physics?searchtype=author&query=Anisenkov%2C+A+V">A. V. Anisenkov</a>, <a href="/search/physics?searchtype=author&query=Aulchenko%2C+V+M">V. M. Aulchenko</a>, <a href="/search/physics?searchtype=author&query=Bashtovoy%2C+N+S">N. S. Bashtovoy</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A+E">A. E. Bondar</a>, <a href="/search/physics?searchtype=author&query=Bragin%2C+A+V">A. V. Bragin</a>, <a href="/search/physics?searchtype=author&query=Eidelman%2C+S+I">S. I. Eidelman</a>, <a href="/search/physics?searchtype=author&query=Epifanov%2C+D+A">D. A. Epifanov</a>, <a href="/search/physics?searchtype=author&query=Epshteyn%2C+L+B">L. B. Epshteyn</a>, <a href="/search/physics?searchtype=author&query=Erofeev%2C+A+L">A. L. Erofeev</a>, <a href="/search/physics?searchtype=author&query=Gayazov%2C+S+E">S. E. Gayazov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A+A">A. A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Gribanov%2C+S+S">S. S. Gribanov</a>, <a href="/search/physics?searchtype=author&query=Grigoriev%2C+D+N">D. N. Grigoriev</a>, <a href="/search/physics?searchtype=author&query=Ignatov%2C+F+V">F. V. Ignatov</a>, <a href="/search/physics?searchtype=author&query=Karpov%2C+S+V">S. V. Karpov</a>, <a href="/search/physics?searchtype=author&query=Kazanin%2C+V+F">V. F. Kazanin</a>, <a href="/search/physics?searchtype=author&query=Korobov%2C+A+A">A. A. Korobov</a>, <a href="/search/physics?searchtype=author&query=Kozyrev%2C+A+N">A. N. Kozyrev</a>, <a href="/search/physics?searchtype=author&query=Kozyrev%2C+E+A">E. A. Kozyrev</a>, <a href="/search/physics?searchtype=author&query=Krokovny%2C+P+P">P. P. Krokovny</a>, <a href="/search/physics?searchtype=author&query=Kuzmenko%2C+A+E">A. E. Kuzmenko</a> , et al. (21 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="2008.05548v1-abstract-short" style="display: inline;"> The paper describes a method of the charged particle identification, developed for the \mbox{CMD-3} detector, installed at the VEPP-2000 $e^{+}e^{-}$ collider. The method is based on the application of the boosted decision trees classifiers, trained for the optimal separation of electrons, muons, pions and kaons in the momentum range from 100 to $1200~{\rm MeV}/c$. The input variables for the clas… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.05548v1-abstract-full').style.display = 'inline'; document.getElementById('2008.05548v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.05548v1-abstract-full" style="display: none;"> The paper describes a method of the charged particle identification, developed for the \mbox{CMD-3} detector, installed at the VEPP-2000 $e^{+}e^{-}$ collider. The method is based on the application of the boosted decision trees classifiers, trained for the optimal separation of electrons, muons, pions and kaons in the momentum range from 100 to $1200~{\rm MeV}/c$. The input variables for the classifiers are linear combinations of the energy depositions of charged particles in 12 layers of the liquid xenon calorimeter of the \mbox{CMD-3}. The event samples for training of the classifiers are taken from the simulation. Various issues of the detector response tuning in simulation and calibration of the calorimeter strip channels are considered. Application of the method is illustrated by the examples of separation of the $e^+e^-(纬)$ and $蟺^+蟺^-(纬)$ final states and of selection of the $K^+K^-$ final state at high energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.05548v1-abstract-full').style.display = 'none'; document.getElementById('2008.05548v1-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 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/2004.13355">arXiv:2004.13355</a> <span> [<a href="https://arxiv.org/pdf/2004.13355">pdf</a>, <a href="https://arxiv.org/format/2004.13355">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/15/06/C06064">10.1088/1748-0221/15/06/C06064 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of unusual slow components in electroluminescence signal of two-phase argon detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Borisova%2C+E">E. Borisova</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="2004.13355v2-abstract-short" style="display: inline;"> Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter search to record ionization signals in the gas phase induced by particle scattering in the liquid phase (S2 signals). In this work, the EL pulse-shapes in a two-phase argon detector have for the first time been studied systematically in a wide range of reduced electric field, varying from 3 to 9 Td.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.13355v2-abstract-full').style.display = 'inline'; document.getElementById('2004.13355v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.13355v2-abstract-full" style="display: none;"> Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter search to record ionization signals in the gas phase induced by particle scattering in the liquid phase (S2 signals). In this work, the EL pulse-shapes in a two-phase argon detector have for the first time been studied systematically in a wide range of reduced electric field, varying from 3 to 9 Td. The pulse-shapes were studied at different readout configurations and spectral ranges: using cryogenic PMTs and SiPMs, with and without a wavelength shifter (WLS), in the VUV and visible range. We observed the fast component and two unusual slow components, with time constants of about 5 $渭$s and 40 $渭$s. The unusual characteristic property of slow components was that their contribution and time constants increased with electric field. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.13355v2-abstract-full').style.display = 'none'; document.getElementById('2004.13355v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">18 pages, 14 figures, 1 equation. Proceedings paper of the INSTR20 conference</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15 (2020) C06064 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.13296">arXiv:2004.13296</a> <span> [<a href="https://arxiv.org/pdf/2004.13296">pdf</a>, <a href="https://arxiv.org/format/2004.13296">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/15/06/C06053">10.1088/1748-0221/15/06/C06053 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of primary scintillations in the visible range in liquid argon doped with methane </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Borisova%2C+E">E. Borisova</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="2004.13296v1-abstract-short" style="display: inline;"> Neutron veto detector based on liquid scintillator containing hydrogen atoms is an integral part of any underground experiment for dark matter search. So far, a flammable mixture of liquid hydrocarbons was used as a liquid scintillator in such detectors. A safe alternative might be a liquid scintillator based on liquid argon doped with methane. In this work, we have studied the primary scintillati… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.13296v1-abstract-full').style.display = 'inline'; document.getElementById('2004.13296v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.13296v1-abstract-full" style="display: none;"> Neutron veto detector based on liquid scintillator containing hydrogen atoms is an integral part of any underground experiment for dark matter search. So far, a flammable mixture of liquid hydrocarbons was used as a liquid scintillator in such detectors. A safe alternative might be a liquid scintillator based on liquid argon doped with methane. In this work, we have studied the primary scintillations in pure liquid argon and its mixtures with methane, the CH4 content varying from 100 ppm to 5%. The primary scintillations have for the first time been observed in liquid argon doped with methane, in the visible and near infrared range, and their relative light yields have been measured as a function of the CH4 content. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.13296v1-abstract-full').style.display = 'none'; document.getElementById('2004.13296v1-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> 28 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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, 6 figures. Presented at Instrumentation for Colliding Beam Physics Conference (INSTR20)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15 (2020) C06053 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.02024">arXiv:2004.02024</a> <span> [<a href="https://arxiv.org/pdf/2004.02024">pdf</a>, <a href="https://arxiv.org/format/2004.02024">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-020-08801-2">10.1140/epjc/s10052-020-08801-2 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+DarkSide+collaboration"> The DarkSide collaboration</a>, <a href="/search/physics?searchtype=author&query=Aalseth%2C+C+E">C. E. Aalseth</a>, <a href="/search/physics?searchtype=author&query=Abdelhakim%2C+S">S. Abdelhakim</a>, <a href="/search/physics?searchtype=author&query=Agnes%2C+P">P. Agnes</a>, <a href="/search/physics?searchtype=author&query=Ajaj%2C+R">R. Ajaj</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=Alexander%2C+T">T. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alici%2C+A">A. Alici</a>, <a href="/search/physics?searchtype=author&query=Alton%2C+A+K">A. K. Alton</a>, <a href="/search/physics?searchtype=author&query=Amaudruz%2C+P">P. Amaudruz</a>, <a href="/search/physics?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/physics?searchtype=author&query=Anstey%2C+J">J. Anstey</a>, <a href="/search/physics?searchtype=author&query=Antonioli%2C+P">P. Antonioli</a>, <a href="/search/physics?searchtype=author&query=Arba%2C+M">M. Arba</a>, <a href="/search/physics?searchtype=author&query=Arcelli%2C+S">S. Arcelli</a>, <a href="/search/physics?searchtype=author&query=Ardito%2C+R">R. Ardito</a>, <a href="/search/physics?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/physics?searchtype=author&query=Arpaia%2C+P">P. Arpaia</a>, <a href="/search/physics?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/physics?searchtype=author&query=Asunskis%2C+A">A. Asunskis</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H+O">H. O. Back</a>, <a href="/search/physics?searchtype=author&query=Barbaryan%2C+V">V. Barbaryan</a>, <a href="/search/physics?searchtype=author&query=Olmedo%2C+A+B">A. Barrado Olmedo</a>, <a href="/search/physics?searchtype=author&query=Batignani%2C+G">G. Batignani</a> , et al. (290 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="2004.02024v2-abstract-short" style="display: inline;"> Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter searches to record (in the gas phase) the ionization signal induced by particle scattering in the liquid phase. The "standard" EL mechanism is considered to be due to noble gas excimer emission in the vacuum ultraviolet (VUV). In addition, there are two alternative mechanisms, producing light in the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.02024v2-abstract-full').style.display = 'inline'; document.getElementById('2004.02024v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.02024v2-abstract-full" style="display: none;"> Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter searches to record (in the gas phase) the ionization signal induced by particle scattering in the liquid phase. The "standard" EL mechanism is considered to be due to noble gas excimer emission in the vacuum ultraviolet (VUV). In addition, there are two alternative mechanisms, producing light in the visible and near infrared (NIR) ranges. The first is due to bremsstrahlung of electrons scattered on neutral atoms ("neutral bremsstrahlung", NBrS). The second, responsible for electron avalanche scintillation in the NIR at higher electric fields, is due to transitions between excited atomic states. In this work, we have for the first time demonstrated two alternative techniques of the optical readout of two-phase argon detectors, in the visible and NIR range, using a silicon photomultiplier matrix and electroluminescence due to either neutral bremsstrahlung or avalanche scintillation. The amplitude yield and position resolution were measured for these readout techniques, which allowed to assess the detection threshold for electron and nuclear recoils in two-phase argon detectors for dark matter searches. To the best of our knowledge, this is the first practical application of the NBrS effect in detection science. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.02024v2-abstract-full').style.display = 'none'; document.getElementById('2004.02024v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">26 pages, 22 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C (2021) 81: 153 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.08106">arXiv:2001.08106</a> <span> [<a href="https://arxiv.org/pdf/2001.08106">pdf</a>, <a href="https://arxiv.org/format/2001.08106">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/10.1088/1748-0221/15/02/P02024">10.1088/1748-0221/15/02/P02024 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Design and construction of a new detector to measure ultra-low radioactive-isotope contamination of argon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+DarkSide+Collaboration"> The DarkSide Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aalseth%2C+C+E">C. E. Aalseth</a>, <a href="/search/physics?searchtype=author&query=Abdelhakim%2C+S">S. Abdelhakim</a>, <a href="/search/physics?searchtype=author&query=Acerbi%2C+F">F. Acerbi</a>, <a href="/search/physics?searchtype=author&query=Agnes%2C+P">P. Agnes</a>, <a href="/search/physics?searchtype=author&query=Ajaj%2C+R">R. Ajaj</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=Alexander%2C+T">T. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alici%2C+A">A. Alici</a>, <a href="/search/physics?searchtype=author&query=Alton%2C+A+K">A. K. Alton</a>, <a href="/search/physics?searchtype=author&query=Amaudruz%2C+P">P. Amaudruz</a>, <a href="/search/physics?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/physics?searchtype=author&query=Anstey%2C+J">J. Anstey</a>, <a href="/search/physics?searchtype=author&query=Antonioli%2C+P">P. Antonioli</a>, <a href="/search/physics?searchtype=author&query=Arba%2C+M">M. Arba</a>, <a href="/search/physics?searchtype=author&query=Arcelli%2C+S">S. Arcelli</a>, <a href="/search/physics?searchtype=author&query=Ardito%2C+R">R. Ardito</a>, <a href="/search/physics?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/physics?searchtype=author&query=Arpaia%2C+P">P. Arpaia</a>, <a href="/search/physics?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/physics?searchtype=author&query=Asunskis%2C+A">A. Asunskis</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H+O">H. O. Back</a>, <a href="/search/physics?searchtype=author&query=Olmedo%2C+A+B">A. Barrado Olmedo</a>, <a href="/search/physics?searchtype=author&query=Batignani%2C+G">G. Batignani</a> , et al. (306 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="2001.08106v1-abstract-short" style="display: inline;"> Large liquid argon detectors offer one of the best avenues for the detection of galactic weakly interacting massive particles (WIMPs) via their scattering on atomic nuclei. The liquid argon target allows exquisite discrimination between nuclear and electron recoil signals via pulse-shape discrimination of the scintillation signals. Atmospheric argon (AAr), however, has a naturally occurring radioa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.08106v1-abstract-full').style.display = 'inline'; document.getElementById('2001.08106v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.08106v1-abstract-full" style="display: none;"> Large liquid argon detectors offer one of the best avenues for the detection of galactic weakly interacting massive particles (WIMPs) via their scattering on atomic nuclei. The liquid argon target allows exquisite discrimination between nuclear and electron recoil signals via pulse-shape discrimination of the scintillation signals. Atmospheric argon (AAr), however, has a naturally occurring radioactive isotope, $^{39}$Ar, a $尾$ emitter of cosmogenic origin. For large detectors, the atmospheric $^{39}$Ar activity poses pile-up concerns. The use of argon extracted from underground wells, deprived of $^{39}$Ar, is key to the physics potential of these experiments. The DarkSide-20k dark matter search experiment will operate a dual-phase time projection chamber with 50 tonnes of radio-pure underground argon (UAr), that was shown to be depleted of $^{39}$Ar with respect to AAr by a factor larger than 1400. Assessing the $^{39}$Ar content of the UAr during extraction is crucial for the success of DarkSide-20k, as well as for future experiments of the Global Argon Dark Matter Collaboration (GADMC). This will be carried out by the DArT in ArDM experiment, a small chamber made with extremely radio-pure materials that will be placed at the centre of the ArDM detector, in the Canfranc Underground Laboratory (LSC) in Spain. The ArDM LAr volume acts as an active veto for background radioactivity, mostly $纬$-rays from the ArDM detector materials and the surrounding rock. This article describes the DArT in ArDM project, including the chamber design and construction, and reviews the background required to achieve the expected performance of the detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.08106v1-abstract-full').style.display = 'none'; document.getElementById('2001.08106v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">13 pages, 8 figures. Corresponding author: E. S谩nchez Garc铆a</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.13535">arXiv:1909.13535</a> <span> [<a href="https://arxiv.org/pdf/1909.13535">pdf</a>, <a href="https://arxiv.org/format/1909.13535">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="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/15/07/C07025">10.1088/1748-0221/15/07/C07025 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Ion detector for Accelerator Mass Spectrometry based on low-pressure TPC with THGEM readout </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Parkhomchuk%2C+V">V. Parkhomchuk</a>, <a href="/search/physics?searchtype=author&query=Petrozhitskiy%2C+A">A. Petrozhitskiy</a>, <a href="/search/physics?searchtype=author&query=Shakirova%2C+T">T. Shakirova</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1909.13535v1-abstract-short" style="display: inline;"> A new technique for ion identification in Accelerator Mass Spectrometry (AMS) has been proposed by measuring the ion track ranges using a low-pressure TPC. As a proof of principle, a low-pressure TPC with charge readout using a THGEM multiplier was developed. The tracks of alpha particles from various radioactive sources were successfully recorded in the TPC. The track ranges were measured with a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.13535v1-abstract-full').style.display = 'inline'; document.getElementById('1909.13535v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.13535v1-abstract-full" style="display: none;"> A new technique for ion identification in Accelerator Mass Spectrometry (AMS) has been proposed by measuring the ion track ranges using a low-pressure TPC. As a proof of principle, a low-pressure TPC with charge readout using a THGEM multiplier was developed. The tracks of alpha particles from various radioactive sources were successfully recorded in the TPC. The track ranges were measured with a high accuracy, reaching the 2% resolution level. Using these results and the SRIM code simulation, it is shown that the isobaric boron and beryllium ions can be effectively separated at ten sigma level. It is expected that this technique will be applied in the AMS facility in Novosibirsk for dating geological objects, in particular for the geochronology of Cenozoic Era. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.13535v1-abstract-full').style.display = 'none'; document.getElementById('1909.13535v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 13 figures, 2 tables. Short paper version will be published in Nucl. Instr. Meth. A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.00619">arXiv:1909.00619</a> <span> [<a href="https://arxiv.org/pdf/1909.00619">pdf</a>, <a href="https://arxiv.org/format/1909.00619">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.2019.162431">10.1016/j.nima.2019.162431 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Electron transport and electric field simulations in two-phase detectors with THGEM electrodes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">Alexander Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">Alexei Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">Egor Frolov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">Vladislav Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">Ekaterina Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">Andrey Sokolov</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="1909.00619v1-abstract-short" style="display: inline;"> One of the main features of two-phase detectors with electroluminescence (EL) gap being developed in our laboratory for dark matter search is the extensive use of THGEMs (Thick Gas Electron Multipliers). In various versions of the detector, the THGEMs are used as electrodes in the gas and liquid phases to form the drift, electron emission and EL regions, as well as for avalanche amplification of a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.00619v1-abstract-full').style.display = 'inline'; document.getElementById('1909.00619v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.00619v1-abstract-full" style="display: none;"> One of the main features of two-phase detectors with electroluminescence (EL) gap being developed in our laboratory for dark matter search is the extensive use of THGEMs (Thick Gas Electron Multipliers). In various versions of the detector, the THGEMs are used as electrodes in the gas and liquid phases to form the drift, electron emission and EL regions, as well as for avalanche amplification of a signal in the gas phase. In this work the simulations of the electric field and electron transport through such THGEM electrodes were performed. In the liquid phase, these simulations allowed to determine the optimal parameters, such as the hole diameter of THGEM and applied voltage across it, that can provide effective transmission of the electrons from the drift region to that of the EL gap. In the gas phase, the effect of the THGHEM voltage on the electric field uniformity in the EL gap was studied. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.00619v1-abstract-full').style.display = 'none'; document.getElementById('1909.00619v1-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 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 11 figures, 1 table</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instrum. Meth. A 943 (2019) 162431 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.05502">arXiv:1905.05502</a> <span> [<a href="https://arxiv.org/pdf/1905.05502">pdf</a>, <a href="https://arxiv.org/format/1905.05502">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2019.162432">10.1016/j.nima.2019.162432 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutral bremsstrahlung in two-phase argon electroluminescence: further studies and possible applications </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1905.05502v1-abstract-short" style="display: inline;"> We further study the effect of neutral bremsstrahlung (NBrS) in two-phase argon electroluminescence (EL), revealed recently in [1]. The absolute EL yield due to NBrS effect, in the visible and NIR range, was remeasured in pure gaseous argon in the two-phase mode, using a two-phase detector with EL gap read out directly by cryogenic PMTs and SiPMs. Possible applications of the NBrS effect in detect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.05502v1-abstract-full').style.display = 'inline'; document.getElementById('1905.05502v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.05502v1-abstract-full" style="display: none;"> We further study the effect of neutral bremsstrahlung (NBrS) in two-phase argon electroluminescence (EL), revealed recently in [1]. The absolute EL yield due to NBrS effect, in the visible and NIR range, was remeasured in pure gaseous argon in the two-phase mode, using a two-phase detector with EL gap read out directly by cryogenic PMTs and SiPMs. Possible applications of the NBrS effect in detection science are discussed, including those in two-phase dark matter detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.05502v1-abstract-full').style.display = 'none'; document.getElementById('1905.05502v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 5 figures, presented at VCI2019 conference, to be published in NIM A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1812.09018">arXiv:1812.09018</a> <span> [<a href="https://arxiv.org/pdf/1812.09018">pdf</a>, <a href="https://arxiv.org/format/1812.09018">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptz125">10.1093/ptep/ptz125 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> COMET Phase-I Technical Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+COMET+Collaboration"> The COMET Collaboration</a>, <a href="/search/physics?searchtype=author&query=Abramishvili%2C+R">R. Abramishvili</a>, <a href="/search/physics?searchtype=author&query=Adamov%2C+G">G. Adamov</a>, <a href="/search/physics?searchtype=author&query=Akhmetshin%2C+R+R">R. R. Akhmetshin</a>, <a href="/search/physics?searchtype=author&query=Allin%2C+A">A. Allin</a>, <a href="/search/physics?searchtype=author&query=Ang%C3%A9lique%2C+J+C">J. C. Ang茅lique</a>, <a href="/search/physics?searchtype=author&query=Anishchik%2C+V">V. Anishchik</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+M">M. Aoki</a>, <a href="/search/physics?searchtype=author&query=Aznabayev%2C+D">D. Aznabayev</a>, <a href="/search/physics?searchtype=author&query=Bagaturia%2C+I">I. Bagaturia</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Bauer%2C+D">D. Bauer</a>, <a href="/search/physics?searchtype=author&query=Baygarashev%2C+D">D. Baygarashev</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A+E">A. E. Bondar</a>, <a href="/search/physics?searchtype=author&query=C%C3%A2rloganu%2C+C">C. C芒rloganu</a>, <a href="/search/physics?searchtype=author&query=Carniol%2C+B">B. Carniol</a>, <a href="/search/physics?searchtype=author&query=Chau%2C+T+T">T. T. Chau</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+K">J. K. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+S+J">S. J. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheung%2C+Y+E">Y. E. Cheung</a>, <a href="/search/physics?searchtype=author&query=da+Silva%2C+W">W. da Silva</a>, <a href="/search/physics?searchtype=author&query=Dauncey%2C+P+D">P. D. Dauncey</a>, <a href="/search/physics?searchtype=author&query=Densham%2C+C">C. Densham</a>, <a href="/search/physics?searchtype=author&query=Devidze%2C+G">G. Devidze</a> , et al. (170 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="1812.09018v3-abstract-short" style="display: inline;"> The Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminium nucleus ($渭-e$ conversion, $渭^- N \to e^- N$); a lepton flavor violating process. The experimental sensitivity goal for this process in the Phase-I experiment is… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.09018v3-abstract-full').style.display = 'inline'; document.getElementById('1812.09018v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1812.09018v3-abstract-full" style="display: none;"> The Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminium nucleus ($渭-e$ conversion, $渭^- N \to e^- N$); a lepton flavor violating process. The experimental sensitivity goal for this process in the Phase-I experiment is $3.1\times10^{-15}$, or 90 % upper limit of branching ratio of $7\times 10^{-15}$, which is a factor of 100 improvement over the existing limit. The expected number of background events is 0.032. To achieve the target sensitivity and background level, the 3.2 kW 8 GeV proton beam from J-PARC will be used. Two types of detectors, CyDet and StrECAL, will be used for detecting the \mue conversion events, and for measuring the beam-related background events in view of the Phase-II experiment, respectively. Results from simulation on signal and background estimations are also described. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.09018v3-abstract-full').style.display = 'none'; document.getElementById('1812.09018v3-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 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 December, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">A minor correction applied in Eq. 3</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Progress of Theoretical and Experimental Physics, Volume 2020, Issue 3, March 2020, 033C01 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.02839">arXiv:1805.02839</a> <span> [<a href="https://arxiv.org/pdf/1805.02839">pdf</a>, <a href="https://arxiv.org/format/1805.02839">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"> Characterization of a 109Cd gamma-ray source for the two-phase argon detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Legkodymov%2C+A">A. Legkodymov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Porosev%2C+V">V. Porosev</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1805.02839v2-abstract-short" style="display: inline;"> At present, a two-phase argon detector is being developed in our laboratory for dark matter search and low-energy neutrino experiments. To calibrate its energy scale a $^{109}$Cd gamma-ray source was used. In this work a detailed emission spectrum of the $^{109}$Cd source was measured using YAP:Ce scintillator and high-purity germanium (HPGe) detectors. It is shown that the $^{109}$Cd source, equi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.02839v2-abstract-full').style.display = 'inline'; document.getElementById('1805.02839v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.02839v2-abstract-full" style="display: none;"> At present, a two-phase argon detector is being developed in our laboratory for dark matter search and low-energy neutrino experiments. To calibrate its energy scale a $^{109}$Cd gamma-ray source was used. In this work a detailed emission spectrum of the $^{109}$Cd source was measured using YAP:Ce scintillator and high-purity germanium (HPGe) detectors. It is shown that the $^{109}$Cd source, equipped with a W substrate and a Cu filter, can provide a complete set of gamma-ray lines, ranging from 8 to 90 keV, for the energy calibration of two-phase detectors. These measurements allowed us to successfully quantify the shape of the amplitude spectra observed in the two-phase argon detector when irradiated with the $^{109}$Cd source. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.02839v2-abstract-full').style.display = 'none'; document.getElementById('1805.02839v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 4 figures, 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.05329">arXiv:1803.05329</a> <span> [<a href="https://arxiv.org/pdf/1803.05329">pdf</a>, <a href="https://arxiv.org/format/1803.05329">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.astropartphys.2018.06.005">10.1016/j.astropartphys.2018.06.005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Revealing neutral bremsstrahlung in two-phase argon electroluminescence </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1803.05329v3-abstract-short" style="display: inline;"> Proportional electroluminescence (EL) in noble gases has long been used in two-phase detectors for dark matter search, to record ionization signals induced by particle scattering in the noble-gas liquid (S2 signals). Until recently, it was believed that proportional electroluminescence was fully due to VUV emission of noble gas excimers produced in atomic collisions with excited atoms, the latter… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.05329v3-abstract-full').style.display = 'inline'; document.getElementById('1803.05329v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.05329v3-abstract-full" style="display: none;"> Proportional electroluminescence (EL) in noble gases has long been used in two-phase detectors for dark matter search, to record ionization signals induced by particle scattering in the noble-gas liquid (S2 signals). Until recently, it was believed that proportional electroluminescence was fully due to VUV emission of noble gas excimers produced in atomic collisions with excited atoms, the latter being in turn produced by drifting electrons. In this work we consider an additional mechanism of proportional electroluminescence, namely that of bremsstrahlung of drifting electrons scattered on neutral atoms (so-called neutral bremsstrahlung); it is systemically studied here both theoretically and experimentally. In particular, the absolute EL yield has for the first time been measured in pure gaseous argon in the two-phase mode, using a dedicated two-phase detector with EL gap optically read out by cryogenic PMTs and SiPMs. We show that the neutral bremsstrahlung effect can explain two intriguing observations in EL radiation: that of the substantial contribution of the non-VUV spectral component, extending from the UV to NIR, and that of the photon emission at lower electric fields, below the Ar excitation threshold. Possible applications of neutral bremsstrahlung effect in two-phase dark matter detectors are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.05329v3-abstract-full').style.display = 'none'; document.getElementById('1803.05329v3-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 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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, 21 figures. Version3: new several paragraphs and references and a new figure added</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Astroparticle Physics 103 (2018) 29 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1802.00200">arXiv:1802.00200</a> <span> [<a href="https://arxiv.org/pdf/1802.00200">pdf</a>, <a href="https://arxiv.org/format/1802.00200">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2018)195">10.1007/JHEP03(2018)195 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A method for model-independent measurement of the CKM angle $尾$ via time-dependent analysis of the $B^0\to D蟺^+蟺^-$, $D\to K_S^0蟺^+蟺^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Kuzmin%2C+A">A. Kuzmin</a>, <a href="/search/physics?searchtype=author&query=Vorobyev%2C+V">V. Vorobyev</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="1802.00200v2-abstract-short" style="display: inline;"> A new method for model-independent measurement of the CKM angle $尾$ is proposed, that employs time-dependent analysis of flavour-tagged $B^0\to D蟺^+蟺^-$ decays with $D$ meson decays into CP-specific and~$K_S^0蟺^+蟺^-$ final states. This method can be used to measure the angle $尾$ with future data from the Belle II and LHCb experiments with the precision level of one degree. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1802.00200v2-abstract-full" style="display: none;"> A new method for model-independent measurement of the CKM angle $尾$ is proposed, that employs time-dependent analysis of flavour-tagged $B^0\to D蟺^+蟺^-$ decays with $D$ meson decays into CP-specific and~$K_S^0蟺^+蟺^-$ final states. This method can be used to measure the angle $尾$ with future data from the Belle II and LHCb experiments with the precision level of one degree. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.00200v2-abstract-full').style.display = 'none'; document.getElementById('1802.00200v2-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> 23 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 February, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">24 pages, submitted to JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP03(2018)195 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1707.08145">arXiv:1707.08145</a> <span> [<a href="https://arxiv.org/pdf/1707.08145">pdf</a>, <a href="https://arxiv.org/format/1707.08145">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjp/i2018-11973-4">10.1140/epjp/i2018-11973-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> DarkSide-20k: A 20 Tonne Two-Phase LAr TPC for Direct Dark Matter Detection at LNGS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Aalseth%2C+C+E">C. E. Aalseth</a>, <a href="/search/physics?searchtype=author&query=Acerbi%2C+F">F. Acerbi</a>, <a href="/search/physics?searchtype=author&query=Agnes%2C+P">P. Agnes</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=Alexander%2C+T">T. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alici%2C+A">A. Alici</a>, <a href="/search/physics?searchtype=author&query=Alton%2C+A+K">A. K. Alton</a>, <a href="/search/physics?searchtype=author&query=Antonioli%2C+P">P. Antonioli</a>, <a href="/search/physics?searchtype=author&query=Arcelli%2C+S">S. Arcelli</a>, <a href="/search/physics?searchtype=author&query=Ardito%2C+R">R. Ardito</a>, <a href="/search/physics?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/physics?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/physics?searchtype=author&query=Ave%2C+M">M. Ave</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H+O">H. O. Back</a>, <a href="/search/physics?searchtype=author&query=Olmedo%2C+A+I+B">A. I. Barrado Olmedo</a>, <a href="/search/physics?searchtype=author&query=Batignani%2C+G">G. Batignani</a>, <a href="/search/physics?searchtype=author&query=Bertoldo%2C+E">E. Bertoldo</a>, <a href="/search/physics?searchtype=author&query=Bettarini%2C+S">S. Bettarini</a>, <a href="/search/physics?searchtype=author&query=Bisogni%2C+M+G">M. G. Bisogni</a>, <a href="/search/physics?searchtype=author&query=Bocci%2C+V">V. Bocci</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bonivento%2C+W">W. Bonivento</a>, <a href="/search/physics?searchtype=author&query=Bossa%2C+M">M. Bossa</a>, <a href="/search/physics?searchtype=author&query=Bottino%2C+B">B. Bottino</a> , et al. (260 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="1707.08145v1-abstract-short" style="display: inline;"> Building on the successful experience in operating the DarkSide-50 detector, the DarkSide Collaboration is going to construct DarkSide-20k, a direct WIMP search detector using a two-phase Liquid Argon Time Projection Chamber (LArTPC) with an active (fiducial) mass of 23 t (20 t). The DarkSide-20k LArTPC will be deployed within a shield/veto with a spherical Liquid Scintillator Veto (LSV) inside a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.08145v1-abstract-full').style.display = 'inline'; document.getElementById('1707.08145v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1707.08145v1-abstract-full" style="display: none;"> Building on the successful experience in operating the DarkSide-50 detector, the DarkSide Collaboration is going to construct DarkSide-20k, a direct WIMP search detector using a two-phase Liquid Argon Time Projection Chamber (LArTPC) with an active (fiducial) mass of 23 t (20 t). The DarkSide-20k LArTPC will be deployed within a shield/veto with a spherical Liquid Scintillator Veto (LSV) inside a cylindrical Water Cherenkov Veto (WCV). Operation of DarkSide-50 demonstrated a major reduction in the dominant $^{39}$Ar background when using argon extracted from an underground source, before applying pulse shape analysis. Data from DarkSide-50, in combination with MC simulation and analytical modeling, shows that a rejection factor for discrimination between electron and nuclear recoils of $\gt3\times10^9$ is achievable. This, along with the use of the veto system, is the key to unlocking the path to large LArTPC detector masses, while maintaining an "instrumental background-free" experiment, an experiment in which less than 0.1 events (other than $谓$-induced nuclear recoils) is expected to occur within the WIMP search region during the planned exposure. DarkSide-20k will have ultra-low backgrounds than can be measured in situ. This will give sensitivity to WIMP-nucleon cross sections of $1.2\times10^{-47}$ cm$^2$ ($1.1\times10^{-46}$ cm$^2$) for WIMPs of $1$ TeV$/c^2$ ($10$ TeV$/c^2$) mass, to be achieved during a 5 yr run producing an exposure of 100 t yr free from any instrumental background. DarkSide-20k could then extend its operation to a decade, increasing the exposure to 200 t yr, reaching a sensitivity of $7.4\times10^{-48}$ cm$^2$ ($6.9\times10^{-47}$ cm$^2$) for WIMPs of $1$ TeV$/c^2$ ($10$ TeV$/c^2$) mass. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.08145v1-abstract-full').style.display = 'none'; document.getElementById('1707.08145v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 July, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-17-298-PPD </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Aalseth, C.E., Acerbi, F., Agnes, P. et al. Eur. Phys. J. Plus (2018) 133: 131 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.07028">arXiv:1705.07028</a> <span> [<a href="https://arxiv.org/pdf/1705.07028">pdf</a>, <a href="https://arxiv.org/format/1705.07028">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/12/09/P09030">10.1088/1748-0221/12/09/P09030 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cryogenic Characterization of FBK RGB-HD SiPMs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Aalseth%2C+C+E">C. E. Aalseth</a>, <a href="/search/physics?searchtype=author&query=Acerbi%2C+F">F. Acerbi</a>, <a href="/search/physics?searchtype=author&query=Agnes%2C+P">P. Agnes</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=Alexander%2C+T">T. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alici%2C+A">A. Alici</a>, <a href="/search/physics?searchtype=author&query=Alton%2C+A+K">A. K. Alton</a>, <a href="/search/physics?searchtype=author&query=Ampudia%2C+P">P. Ampudia</a>, <a href="/search/physics?searchtype=author&query=Antonioli%2C+P">P. Antonioli</a>, <a href="/search/physics?searchtype=author&query=Arcelli%2C+S">S. Arcelli</a>, <a href="/search/physics?searchtype=author&query=Ardito%2C+R">R. Ardito</a>, <a href="/search/physics?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/physics?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H+O">H. O. Back</a>, <a href="/search/physics?searchtype=author&query=Batignani%2C+G">G. Batignani</a>, <a href="/search/physics?searchtype=author&query=Bertoldo%2C+E">E. Bertoldo</a>, <a href="/search/physics?searchtype=author&query=Bettarini%2C+S">S. Bettarini</a>, <a href="/search/physics?searchtype=author&query=Bisogni%2C+M+G">M. G. Bisogni</a>, <a href="/search/physics?searchtype=author&query=Bocci%2C+V">V. Bocci</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bonivento%2C+W">W. Bonivento</a>, <a href="/search/physics?searchtype=author&query=Bossa%2C+M">M. Bossa</a>, <a href="/search/physics?searchtype=author&query=Bottino%2C+B">B. Bottino</a>, <a href="/search/physics?searchtype=author&query=Bunker%2C+R">R. Bunker</a> , et al. (246 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1705.07028v3-abstract-short" style="display: inline;"> We report on the cryogenic characterization of Red Green Blue - High Density (RGB-HD) SiPMs developed at Fondazione Bruno Kessler (FBK) as part of the DarkSide program of dark matter searches with liquid argon time projection chambers. A dedicated setup was used to measure the primary dark noise, the correlated noise, and the gain of the SiPMs at varying temperatures. A custom-made data acquisitio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.07028v3-abstract-full').style.display = 'inline'; document.getElementById('1705.07028v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.07028v3-abstract-full" style="display: none;"> We report on the cryogenic characterization of Red Green Blue - High Density (RGB-HD) SiPMs developed at Fondazione Bruno Kessler (FBK) as part of the DarkSide program of dark matter searches with liquid argon time projection chambers. A dedicated setup was used to measure the primary dark noise, the correlated noise, and the gain of the SiPMs at varying temperatures. A custom-made data acquisition system and analysis software were used to precisely characterize these parameters. We demonstrate that FBK RGB-HD SiPMs with low quenching resistance (RGB-HD-LR$_q$) can be operated from 40 K to 300 K with gains in the range $10^5$ to $10^6$ and noise rates on the order of a few Hz/mm$^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.07028v3-abstract-full').style.display = 'none'; document.getElementById('1705.07028v3-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 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.05107">arXiv:1705.05107</a> <span> [<a href="https://arxiv.org/pdf/1705.05107">pdf</a>, <a href="https://arxiv.org/format/1705.05107">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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/10.1088/1748-0221/12/05/C05010">10.1088/1748-0221/12/05/C05010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the ionization yield of nuclear recoils in liquid argon using a two-phase detector with electroluminescence gap </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Grishnyaev%2C+E">E. Grishnyaev</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Polosatkin%2C+S">S. Polosatkin</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1705.05107v1-abstract-short" style="display: inline;"> A measurement of ionization yields in noble-gas liquids is relevant to the energy calibration of nuclear recoil detectors for dark matter search and coherent neutrino-nucleus scattering experiments. In this work we further study the ionization yield of nuclear recoils in liquid Ar, using a two-phase detector with an electroluminescence gap and DD neutron generator. The ionization yields of nuclear… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.05107v1-abstract-full').style.display = 'inline'; document.getElementById('1705.05107v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.05107v1-abstract-full" style="display: none;"> A measurement of ionization yields in noble-gas liquids is relevant to the energy calibration of nuclear recoil detectors for dark matter search and coherent neutrino-nucleus scattering experiments. In this work we further study the ionization yield of nuclear recoils in liquid Ar, using a two-phase detector with an electroluminescence gap and DD neutron generator. The ionization yields of nuclear recoils in liquid Ar were measured at 233 keV and electric fields of 0.56 and 0.62 kV/cm; their values amounted to 5.9 $\pm$ 0.8 and 7.4 $\pm$ 1 e$^-$/keV, respectively. The characteristic dependences of the ionization yield on energy and electric field were determined, while comparing the results obtained to those at lower energies and higher fields. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.05107v1-abstract-full').style.display = 'none'; document.getElementById('1705.05107v1-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 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">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 8 figures, 1 table. Submitted to the Proceedings of the Instrumentation for Colliding Beam Physics (INSTR17) Conference. To be published in JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 12 (2017) C05010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.05101">arXiv:1705.05101</a> <span> [<a href="https://arxiv.org/pdf/1705.05101">pdf</a>, <a href="https://arxiv.org/format/1705.05101">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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/10.1088/1748-0221/12/05/C05016">10.1088/1748-0221/12/05/C05016 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Further studies of proportional electroluminescence in two-phase argon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Oleynikov%2C+V">V. Oleynikov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1705.05101v1-abstract-short" style="display: inline;"> The study of proportional electroluminescence in two-phase argon is relevant in the field of noble-gas liquid detectors for dark matter search and low-energy neutrino experiments. In this work, we continued to study proportional electroluminescence (EL) in two-phase argon doped with a minor (9 ppm) admixture of nitrogen, in the VUV, UV and visible spectral ranges. We confirmed the effect of enhanc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.05101v1-abstract-full').style.display = 'inline'; document.getElementById('1705.05101v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.05101v1-abstract-full" style="display: none;"> The study of proportional electroluminescence in two-phase argon is relevant in the field of noble-gas liquid detectors for dark matter search and low-energy neutrino experiments. In this work, we continued to study proportional electroluminescence (EL) in two-phase argon doped with a minor (9 ppm) admixture of nitrogen, in the VUV, UV and visible spectral ranges. We confirmed the effect of enhancement of the EL yield, as well as the presence of non-VUV component in addition to that of VUV, in proportional electroluminescence in two-phase Ar. On the other hand, the contribution of non-VUV component determined here within the model of N2 emission in the UV, turned out to be insufficient to explain the EL yield enhancement effect. Accordingly, the problem of proportional electroluminescence in two-phase Ar remains unresolved. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.05101v1-abstract-full').style.display = 'none'; document.getElementById('1705.05101v1-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 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">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 7 figures, 1 table. Presented at Instrumentation for Colliding Beam Physics Conference (INSTR17). To be published in JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 12 (2017) C05016 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.01250">arXiv:1705.01250</a> <span> [<a href="https://arxiv.org/pdf/1705.01250">pdf</a>, <a href="https://arxiv.org/format/1705.01250">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/10.1088/1748-0221/12/05/C05002">10.1088/1748-0221/12/05/C05002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of cryogenic photomultiplier tubes for the future two-phase cryogenic avalanche detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Frolov%2C+E">E. Frolov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1705.01250v2-abstract-short" style="display: inline;"> We report the results of a characterization study of several types of cryogenic photomultipliers manufactured by Hamamatsu Photonics and intended for operation in liquid Ar conditions, namely: compact 2-inch R6041-506MOD tubes, 3-inch R11065-10 and R11065-MOD tubes for operation in liquid Ar and 3-inch R11410-20 tubes originally designed for operation in liquid Xe. These types of PMT are proposed… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.01250v2-abstract-full').style.display = 'inline'; document.getElementById('1705.01250v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.01250v2-abstract-full" style="display: none;"> We report the results of a characterization study of several types of cryogenic photomultipliers manufactured by Hamamatsu Photonics and intended for operation in liquid Ar conditions, namely: compact 2-inch R6041-506MOD tubes, 3-inch R11065-10 and R11065-MOD tubes for operation in liquid Ar and 3-inch R11410-20 tubes originally designed for operation in liquid Xe. These types of PMT are proposed for installation into the future two-phase cryogenic avalanche detector that is developed in the Laboratory of Cosmology and Particle Physics of the Novosibirsk State University jointly with the Budker Institute of Nuclear Physics. Eight R11065 PMTs and seven R11410-20 tubes were tested and all demonstrated excellent performance in liquid Ar in terms of gain and relative single electron efficiency. All 3-inch PMTs showed a maximal gain in liquid Ar above 5x10^6 and relative single electron efficiency higher than 95%. Compact R6041-506MOD tubes have dynode system different from that of the 3-inch photomultipliers and thus their single electron energy resolution and relative efficiency is much worse than that of 3-inch tubes. From 21 2-inch PMTs only 12 tubes were selected with acceptable, i.e. higher than 75%, relative single electron efficiency and the maximal gain higher than 5x10^6. However, these PMTs are very attractive because they are the only compact type of tubes that can operate in liquid Ar. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.01250v2-abstract-full').style.display = 'none'; document.getElementById('1705.01250v2-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> 3 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 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">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to the Proceedings of the Instrumentation for Colliding Beam Physics INSTR17 Conference, to be published in JINST</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.08729">arXiv:1605.08729</a> <span> [<a href="https://arxiv.org/pdf/1605.08729">pdf</a>, <a href="https://arxiv.org/ps/1605.08729">ps</a>, <a href="https://arxiv.org/format/1605.08729">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2016.05.109">10.1016/j.nima.2016.05.109 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Two-phase Cryogenic Avalanche Detector with electroluminescence gap operated in argon doped with nitrogen </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1605.08729v1-abstract-short" style="display: inline;"> A two-phase Cryogenic Avalanche Detector (CRAD) with electroluminescence (EL) gap, operated in argon doped with a minor (49$\pm$7 ppm) admixture of nitrogen, has been studied. The EL gap was optically read out using cryogenic PMTs located on the perimeter of the gap. We present the results of the measurements of the N$_2$ content, detector sensitivity to X-ray-induced signals, EL gap yield and ele… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.08729v1-abstract-full').style.display = 'inline'; document.getElementById('1605.08729v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.08729v1-abstract-full" style="display: none;"> A two-phase Cryogenic Avalanche Detector (CRAD) with electroluminescence (EL) gap, operated in argon doped with a minor (49$\pm$7 ppm) admixture of nitrogen, has been studied. The EL gap was optically read out using cryogenic PMTs located on the perimeter of the gap. We present the results of the measurements of the N$_2$ content, detector sensitivity to X-ray-induced signals, EL gap yield and electron lifetime in the liquid. The detector sensitivity, at a drift field in liquid Ar of 0.6 kV/cm, was measured to be 9 and 16 photoelectrons recorded at the PMTs per keV of deposited energy at 23 and 88 keV respectively. Such two-phase detectors, with enhanced sensitivity to the S2 (ionization-induced) signal, are relevant in the field of argon detectors for dark matter search and low energy neutrino detection. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.08729v1-abstract-full').style.display = 'none'; document.getElementById('1605.08729v1-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 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">4 pages, 5 figures. Presented at Vienna Conference of Instrumentation (2016). To be published in Nucl. Instr. Meth. A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instr. Meth. A 845 (2017) 206 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.02724">arXiv:1509.02724</a> <span> [<a href="https://arxiv.org/pdf/1509.02724">pdf</a>, <a href="https://arxiv.org/format/1509.02724">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/10/10/P10010">10.1088/1748-0221/10/10/P10010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Characterization of photo-multiplier tubes for the Cryogenic Avalanche Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1509.02724v1-abstract-short" style="display: inline;"> New Cryogenic Avalanche Detector (CRAD) with ultimate sensitivity, that will be able to detect one primary electron released in the cryogenic liquid, is under development in the Laboratory of Cosmology and Particle Physics of the Novosibirsk State University jointly with the Budker Institute of Nuclear Physics. The CRAD will use two sets of cryogenic PMTs in order to get trigger signal either from… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.02724v1-abstract-full').style.display = 'inline'; document.getElementById('1509.02724v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.02724v1-abstract-full" style="display: none;"> New Cryogenic Avalanche Detector (CRAD) with ultimate sensitivity, that will be able to detect one primary electron released in the cryogenic liquid, is under development in the Laboratory of Cosmology and Particle Physics of the Novosibirsk State University jointly with the Budker Institute of Nuclear Physics. The CRAD will use two sets of cryogenic PMTs in order to get trigger signal either from primary scintillations in liquid Ar or from secondary scintillations in high field gap above the liquid. Two types of cryogenic PMTs produced by Hamamatsu Photonics were tested and the results are presented in this paper. Low background 3 inch PMT R11065- 10 demonstrated excellent performance according to its specifications provided by the producer. The gain measured with single electron response (SER) in liquid Ar reached 10^7, dark count rate rate did not exceed 300 Hz and pulse height resolution of single electron signals was close to 50%(FWHM). However, two R11065-10 PMTs out of 7 tested stopped functioning after several tens minutes of operation immersed completely into liquid Ar. The remaining 5 devices and one R11065-MOD were operated successfully for several hours each with all the parameters according to the producer specifications. Compact 2 inch PMT R6041-506-MOD with metal-channel dynode structure is a candidate for side wall PMT system that will look at electroluminescence in high field region above liquid. Four of these PMTs were tested in liquid Ar and demonstrated gain up to 2x10^7, dark count rate rate below 100 Hz and pulse height resolution of single electron signals of about 110% (FWHM). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.02724v1-abstract-full').style.display = 'none'; document.getElementById('1509.02724v1-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, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to JINST</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.00664">arXiv:1509.00664</a> <span> [<a href="https://arxiv.org/pdf/1509.00664">pdf</a>, <a href="https://arxiv.org/ps/1509.00664">ps</a>, <a href="https://arxiv.org/format/1509.00664">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1209/0295-5075/112/19001">10.1209/0295-5075/112/19001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Proportional electroluminescence in two-phase argon and its relevance to rare-event experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Nosov%2C+V">V. Nosov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1509.00664v2-abstract-short" style="display: inline;"> Proportional electroluminescence (EL) in gaseous Ar has for the first time been systematically studied in the two-phase mode, at 87 K and 1.00 atm. Liquid argon had a minor (56 ppm) admixture of nitrogen, which allowed to understand, inter alia, the effect of N2 doping on the EL mechanism in rare-event experiments using two-phase Ar detectors. The measurements were performed in a two-phase Cryogen… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.00664v2-abstract-full').style.display = 'inline'; document.getElementById('1509.00664v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.00664v2-abstract-full" style="display: none;"> Proportional electroluminescence (EL) in gaseous Ar has for the first time been systematically studied in the two-phase mode, at 87 K and 1.00 atm. Liquid argon had a minor (56 ppm) admixture of nitrogen, which allowed to understand, inter alia, the effect of N2 doping on the EL mechanism in rare-event experiments using two-phase Ar detectors. The measurements were performed in a two-phase Cryogenic Avalanche Detector (CRAD) with EL gap located directly above the liquid-gas interface. The EL gap was optically read out in the Vacuum Ultraviolet (VUV), near 128 nm (Ar excimer emission), and in the near Ultraviolet (UV), at 300-450 nm (N2 Second Positive System emission), via cryogenic PMTs and a Geiger-mode APD (GAPD). Proportional electroluminescence was measured to have an amplification parameter of 109+-10 photons per drifting electron per kV overall in the VUV and UV, of which 51+-6% were emitted in the UV. The measured EL threshold, at an electric field of 3.7+-0.2 kV/cm, was in accordance with that predicted by the theory. The latter result is particularly relevant to DarkSide and SCENE dark matter search-related experiments, where the operation electric field was thereby on the verge of appearance of the S2 (ionization-induced) signal. The results obtained pave the way to the development of N2-doped two-phase Ar detectors with enhanced sensitivity to the S2 signal. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.00664v2-abstract-full').style.display = 'none'; document.getElementById('1509.00664v2-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 October, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">6 pages, 4 figures. Replaced to match journal version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> EPL, 112 (2015) 19001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.02296">arXiv:1505.02296</a> <span> [<a href="https://arxiv.org/pdf/1505.02296">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2016.02.010">10.1016/j.nima.2016.02.010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> X-ray ionization yields and energy spectra in liquid argon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1505.02296v2-abstract-short" style="display: inline;"> The main purpose of this work is to provide reference data on X-ray ionization yields and energy spectra in liquid Ar to the studies in the field of Cryogenic Avalanche Detectors (CRADs) for rare-event and other experiments, based on liquid Ar detectors. We present the results of two related researches. First, the X-ray recombination coefficients in the energy range of 10-1000 keV and ionization y… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.02296v2-abstract-full').style.display = 'inline'; document.getElementById('1505.02296v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.02296v2-abstract-full" style="display: none;"> The main purpose of this work is to provide reference data on X-ray ionization yields and energy spectra in liquid Ar to the studies in the field of Cryogenic Avalanche Detectors (CRADs) for rare-event and other experiments, based on liquid Ar detectors. We present the results of two related researches. First, the X-ray recombination coefficients in the energy range of 10-1000 keV and ionization yields at different electric fields, between 0.6 and 2.3 kV/cm, are determined in liquid Ar based on the results of a dedicated experiment. Second, the energy spectra of pulsed X-rays in liquid Ar in the energy range of 15-40 keV, obtained in given experiments including that with the two-phase CRAD, are interpreted and compared to those calculated using a computer program, to correctly determine the absorbed X-ray energy. The X-ray recombination coefficients and ionization yields have for the first time been presented for liquid Ar in systematic way. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.02296v2-abstract-full').style.display = 'none'; document.getElementById('1505.02296v2-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 January, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">13 pages, 9 figures, 3 tables. Submitted to NIM. 2nd version: substantially modified. New Fig. 7: summary of ionization yields in liquid Ar</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instr. Meth. A 816 (2016) 119 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.03663">arXiv:1502.03663</a> <span> [<a href="https://arxiv.org/pdf/1502.03663">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/10.1088/1748-0221/10/04/P04013">10.1088/1748-0221/10/04/P04013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> MPPC versus MRS APD in two-phase Cryogenic Avalanche Detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.03663v1-abstract-short" style="display: inline;"> Two-phase Cryogenic Avalanche Detectors (CRADs) with combined THGEM/GAPD multiplier have become an emerging potential technique for dark matter search and coherent neutrino-nucleus scattering experiments. In such a multiplier the THGEM hole avalanches are optically recorded in the Near Infrared (NIR) using a matrix of Geiger-mode APDs (GAPDs). To select the proper sensor, the performances of six G… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.03663v1-abstract-full').style.display = 'inline'; document.getElementById('1502.03663v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.03663v1-abstract-full" style="display: none;"> Two-phase Cryogenic Avalanche Detectors (CRADs) with combined THGEM/GAPD multiplier have become an emerging potential technique for dark matter search and coherent neutrino-nucleus scattering experiments. In such a multiplier the THGEM hole avalanches are optically recorded in the Near Infrared (NIR) using a matrix of Geiger-mode APDs (GAPDs). To select the proper sensor, the performances of six GAPD types manufactured by different companies, namely by Hamamatsu (MPPCs), CPTA (MRS APDs) and SensL (SiPMs), have been comparatively studied at cryogenic temperatures when operated in two-phase CRADs in Ar at 87 K. While the GAPDs with ceramic packages failed to operate properly at cryogenic temperatures, those with plastic packages, namely MPPC S10931-100P and MRS APD 149-35, showed satisfactory performances at 87 K. In addition, MPPC S10931-100P turned out to be superior in terms of the higher detection efficiency, lower nose rate, lower pixel quenching resistor and better characteristics reproducibility. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.03663v1-abstract-full').style.display = 'none'; document.getElementById('1502.03663v1-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 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 8 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2015 JINST 10 P04013 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1407.7348">arXiv:1407.7348</a> <span> [<a href="https://arxiv.org/pdf/1407.7348">pdf</a>, <a href="https://arxiv.org/ps/1407.7348">ps</a>, <a href="https://arxiv.org/format/1407.7348">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1209/0295-5075/108/12001">10.1209/0295-5075/108/12001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Grishnyaev%2C+E">E. Grishnyaev</a>, <a href="/search/physics?searchtype=author&query=Polosatkin%2C+S">S. Polosatkin</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1407.7348v3-abstract-short" style="display: inline;"> The energy calibration of nuclear recoil detectors is of primary importance to rare-event experiments such as those of direct dark matter search and coherent neutrino-nucleus scattering. In particular, such a calibration is performed by measuring the ionization yield of nuclear recoils in liquid Ar and Xe detection media, using neutron elastic scattering off nuclei. In the present work, the ioniza… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.7348v3-abstract-full').style.display = 'inline'; document.getElementById('1407.7348v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1407.7348v3-abstract-full" style="display: none;"> The energy calibration of nuclear recoil detectors is of primary importance to rare-event experiments such as those of direct dark matter search and coherent neutrino-nucleus scattering. In particular, such a calibration is performed by measuring the ionization yield of nuclear recoils in liquid Ar and Xe detection media, using neutron elastic scattering off nuclei. In the present work, the ionization yield for nuclear recoils in liquid Ar has for the first time been measured in the higher energy range, at 80 and 233 keV, using a two-phase Cryogenic Avalanche Detector (CRAD) and DD neutron generator. The ionization yield in liquid Ar at an electric field of 2.3 kV/cm amounted to 7.8+/-1.1 and 9.7+/-1.3 e-/keV at 80 and 233 keV respectively. The Jaffe model for nuclear recoil-induced ionization, in contrast to that Thomas-Imel, can probably consistently describe the energy dependence of the ionization yield. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.7348v3-abstract-full').style.display = 'none'; document.getElementById('1407.7348v3-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> 23 September, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 July, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 6 figures. Fig. 6 changed. Submitted to EPL</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> EPL 108:12001,2014 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.4633">arXiv:1406.4633</a> <span> [<a href="https://arxiv.org/pdf/1406.4633">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/10.1088/1748-0221/9/08/P08006">10.1088/1748-0221/9/08/P08006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance degradation of Geiger-mode APDs at cryogenic temperatures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a>, <a href="/search/physics?searchtype=author&query=Breskin%2C+A">A. Breskin</a>, <a href="/search/physics?searchtype=author&query=Thers%2C+D">D. Thers</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="1406.4633v1-abstract-short" style="display: inline;"> Two-phase Cryogenic Avalanche Detectors (CRADs) with THGEM multipliers, optically read out with Geiger-mode APDs (GAPDs), were proposed as potential technique for charge recording in rare-event experiments. In this work we report on the degradation of the GAPD performance at cryogenic temperatures revealed in the course of the study of two-phase CRAD in Ar, with combined THGEM/GAPD-matrix multipli… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.4633v1-abstract-full').style.display = 'inline'; document.getElementById('1406.4633v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.4633v1-abstract-full" style="display: none;"> Two-phase Cryogenic Avalanche Detectors (CRADs) with THGEM multipliers, optically read out with Geiger-mode APDs (GAPDs), were proposed as potential technique for charge recording in rare-event experiments. In this work we report on the degradation of the GAPD performance at cryogenic temperatures revealed in the course of the study of two-phase CRAD in Ar, with combined THGEM/GAPD-matrix multiplier; the GAPDs recorded secondary scintillation photons from the THGEM holes in the Near Infrared. The degradation effect, namely the loss of the GAPD pulse amplitude, depended on the incident X-ray photon flux. The critical counting rate of photoelectrons produced at the 4.4 mm2 GAPD, degrading its performance at 87 K, was estimated as 10000 per second. This effect was shown to result from the considerable increase of the pixel quenching resistor of this CPTA-made GAPD type. Though not affecting low-rate rare-event experiments, the observed effect may impose some limitations on the performance of CRADs with GAPD-based optical readout at higher-rate applications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.4633v1-abstract-full').style.display = 'none'; document.getElementById('1406.4633v1-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 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 9 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 9:P08006,2014 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1303.4817">arXiv:1303.4817</a> <span> [<a href="https://arxiv.org/pdf/1303.4817">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2013.07.089">10.1016/j.nima.2013.07.089 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First demonstration of THGEM/GAPD-matrix optical readout in two-phase Cryogenic Avalanche Detector in Ar </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a>, <a href="/search/physics?searchtype=author&query=Breskin%2C+A">A. Breskin</a>, <a href="/search/physics?searchtype=author&query=Thers%2C+D">D. Thers</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="1303.4817v1-abstract-short" style="display: inline;"> The multi-channel optical readout of a THGEM multiplier coupled to a matrix of 3x3 Geiger-mode APDs (GAPDs) was demonstrated in a two-phase Cryogenic Avalanche Detector (CRAD) in Ar. The GAPDs recorded THGEM-hole avalanches in the Near Infrared (NIR). At an avalanche charge gain of 160, the yield of the combined THGEM/GAPD-matrix multiplier amounted at ~80 photoelectrons per 20 keV X-ray absorbed… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.4817v1-abstract-full').style.display = 'inline'; document.getElementById('1303.4817v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1303.4817v1-abstract-full" style="display: none;"> The multi-channel optical readout of a THGEM multiplier coupled to a matrix of 3x3 Geiger-mode APDs (GAPDs) was demonstrated in a two-phase Cryogenic Avalanche Detector (CRAD) in Ar. The GAPDs recorded THGEM-hole avalanches in the Near Infrared (NIR). At an avalanche charge gain of 160, the yield of the combined THGEM/GAPD-matrix multiplier amounted at ~80 photoelectrons per 20 keV X-ray absorbed in the liquid phase. A spatial resolution of 2.5 mm (FWHM) has been measured for the impinging X-rays. This technique has potential applications in coherent neutrino-nucleus scattering and dark matter search experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.4817v1-abstract-full').style.display = 'none'; document.getElementById('1303.4817v1-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 March, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 6 figures. Presented at Vienna Conference of Instrumentation (Feb 15-20, 2013, Vienna, Austria). Submitted to the Proceedings</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A732:213-216,2013 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1210.0649">arXiv:1210.0649</a> <span> [<a href="https://arxiv.org/pdf/1210.0649">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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/10.1088/1748-0221/8/02/P02008">10.1088/1748-0221/8/02/P02008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Two-phase Cryogenic Avalanche Detectors with THGEM and hybrid THGEM/GEM multipliers operated in Ar and Ar+N2 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a>, <a href="/search/physics?searchtype=author&query=Akimov%2C+D">D. Akimov</a>, <a href="/search/physics?searchtype=author&query=Breskin%2C+A">A. Breskin</a>, <a href="/search/physics?searchtype=author&query=Thers%2C+D">D. Thers</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="1210.0649v1-abstract-short" style="display: inline;"> Two-phase Cryogenic Avalanche Detectors (CRADs) with GEM and THGEM multipliers have become an emerging potential technique for charge recording in rare-event experiments. In this work we present the performance of two-phase CRADs operated in Ar and Ar+N2. Detectors with sensitive area of 10x10 cm2, reaching a litre-scale active volume, yielded gains of the order of 1000 with a double-THGEM multipl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.0649v1-abstract-full').style.display = 'inline'; document.getElementById('1210.0649v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1210.0649v1-abstract-full" style="display: none;"> Two-phase Cryogenic Avalanche Detectors (CRADs) with GEM and THGEM multipliers have become an emerging potential technique for charge recording in rare-event experiments. In this work we present the performance of two-phase CRADs operated in Ar and Ar+N2. Detectors with sensitive area of 10x10 cm2, reaching a litre-scale active volume, yielded gains of the order of 1000 with a double-THGEM multiplier. Higher gains, of about 5000, have been attained in two-phase Ar CRADs with a hybrid triple-stage multiplier, comprising of a double-THGEM followed by a GEM. The performance of two-phase CRADs in Ar doped with N2 (0.1-0.6%) yielded faster signals and similar gains compared to the operation in two-phase Ar. The applicability to rare-event experiments is discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.0649v1-abstract-full').style.display = 'none'; document.getElementById('1210.0649v1-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, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 13 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 8:P02008,2013 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1204.0580">arXiv:1204.0580</a> <span> [<a href="https://arxiv.org/pdf/1204.0580">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/7/06/P06014">10.1088/1748-0221/7/06/P06014 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of infrared scintillations in gaseous and liquid argon - Part II: light yield and possible applications </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Peleganchuk%2C+S">S. Peleganchuk</a>, <a href="/search/physics?searchtype=author&query=Porosev%2C+V">V. Porosev</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1204.0580v2-abstract-short" style="display: inline;"> We present here a comprehensive study of the light yield of primary and secondary scintillations produced in gaseous and liquid Ar in the near infrared (NIR) and visible region, at cryogenic temperatures. The measurements were performed using Geiger-mode avalanche photodiodes (GAPDs) and pulsed X-ray irradiation. The primary scintillation yield of the fast emission component in gaseous Ar was foun… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.0580v2-abstract-full').style.display = 'inline'; document.getElementById('1204.0580v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1204.0580v2-abstract-full" style="display: none;"> We present here a comprehensive study of the light yield of primary and secondary scintillations produced in gaseous and liquid Ar in the near infrared (NIR) and visible region, at cryogenic temperatures. The measurements were performed using Geiger-mode avalanche photodiodes (GAPDs) and pulsed X-ray irradiation. The primary scintillation yield of the fast emission component in gaseous Ar was found to be independent of temperature in the range of 87-160 K; it amounted to 17000+/-3000 photon/MeV in the NIR in the range of 690-1000 nm. In liquid Ar at 87 K, the primary scintillation yield of the fast component was considerably reduced, amounting to 510+/-90 photon/MeV, in the range of 400-1000 nm. Proportional NIR scintillations (electroluminescence) in gaseous Ar were also observed; their amplification parameter at 160 K was measured to be 13 photons per drifting electron per kV. No proportional scintillations were observed in liquid Ar up to the electric fields of 30 kV/cm. The applications of NIR scintillations in dark matter search and coherent neutrino-nucleus scattering experiments and in ion beam radiotherapy are considered. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.0580v2-abstract-full').style.display = 'none'; document.getElementById('1204.0580v2-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> 28 May, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 April, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages, 11 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 7:P06014,2012 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1204.0180">arXiv:1204.0180</a> <span> [<a href="https://arxiv.org/pdf/1204.0180">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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/10.1088/1748-0221/7/06/P06015">10.1088/1748-0221/7/06/P06015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of infrared scintillations in gaseous and liquid argon - Part I: methodology and time measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Dolgov%2C+A">A. Dolgov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</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="1204.0180v1-abstract-short" style="display: inline;"> A methodology to measure Near Infrared (NIR) scintillations in gaseous and liquid Ar, using Geiger-mode APDs (GAPDs) sensitive in the NIR and pulsed X-ray irradiation, is described. This study has been triggered by the development of Cryogenic Avalanche Detectors (CRADs) with optical readout in the NIR using combined THGEM/GAPD multiplier, which may come to be in demand in coherent neutrino-nucleu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.0180v1-abstract-full').style.display = 'inline'; document.getElementById('1204.0180v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1204.0180v1-abstract-full" style="display: none;"> A methodology to measure Near Infrared (NIR) scintillations in gaseous and liquid Ar, using Geiger-mode APDs (GAPDs) sensitive in the NIR and pulsed X-ray irradiation, is described. This study has been triggered by the development of Cryogenic Avalanche Detectors (CRADs) with optical readout in the NIR using combined THGEM/GAPD multiplier, which may come to be in demand in coherent neutrino-nucleus scattering and dark matter search experiments. A new approach to measure the NIR scintillation yield at cryogenic temperatures has been developed, namely using GAPDs in single photoelectron counting mode with time resolution. The time structure of NIR scintillations and their light yield were measured both for primary scintillations and that of secondary at moderate electric fields (electroluminescence), in gaseous and liquid Ar. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1204.0180v1-abstract-full').style.display = 'none'; document.getElementById('1204.0180v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 April, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages, 15 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 7:P06015,2012 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1110.2866">arXiv:1110.2866</a> <span> [<a href="https://arxiv.org/pdf/1110.2866">pdf</a>, <a href="https://arxiv.org/format/1110.2866">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/7/01/P01010">10.1088/1748-0221/7/01/P01010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Absolute luminosity measurements with the LHCb detector at the LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+LHCb+Collaboration"> The LHCb Collaboration</a>, <a href="/search/physics?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/physics?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/physics?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/physics?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/physics?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/physics?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/physics?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/physics?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/physics?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/physics?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/physics?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/physics?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/physics?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/physics?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/physics?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/physics?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/physics?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/physics?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/physics?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/physics?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a>, <a href="/search/physics?searchtype=author&query=Artuso%2C+M">M. Artuso</a>, <a href="/search/physics?searchtype=author&query=Aslanides%2C+E">E. Aslanides</a>, <a href="/search/physics?searchtype=author&query=Auriemma%2C+G">G. Auriemma</a>, <a href="/search/physics?searchtype=author&query=Bachmann%2C+S">S. Bachmann</a> , et al. (549 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="1110.2866v2-abstract-short" style="display: inline;"> Absolute luminosity measurements are of general interest for colliding-beam experiments at storage rings. These measurements are necessary to determine the absolute cross-sections of reaction processes and are valuable to quantify the performance of the accelerator. Using data taken in 2010, LHCb has applied two methods to determine the absolute scale of its luminosity measurements for proton-prot… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.2866v2-abstract-full').style.display = 'inline'; document.getElementById('1110.2866v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.2866v2-abstract-full" style="display: none;"> Absolute luminosity measurements are of general interest for colliding-beam experiments at storage rings. These measurements are necessary to determine the absolute cross-sections of reaction processes and are valuable to quantify the performance of the accelerator. Using data taken in 2010, LHCb has applied two methods to determine the absolute scale of its luminosity measurements for proton-proton collisions at the LHC with a centre-of-mass energy of 7 TeV. In addition to the classic "van der Meer scan" method a novel technique has been developed which makes use of direct imaging of the individual beams using beam-gas and beam-beam interactions. This beam imaging method is made possible by the high resolution of the LHCb vertex detector and the close proximity of the detector to the beams, and allows beam parameters such as positions, angles and widths to be determined. The results of the two methods have comparable precision and are in good agreement. Combining the two methods, an overall precision of 3.5% in the absolute luminosity determination is reached. The techniques used to transport the absolute luminosity calibration to the full 2010 data-taking period are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.2866v2-abstract-full').style.display = 'none'; document.getElementById('1110.2866v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 January, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 October, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">48 pages, 19 figures. Results unchanged, improved clarity of Table 6, 9 and 10 and corresponding explanation in the text</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2011-015; CERN-PH-EP-2011-157 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2012 JINST 7 P01010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1103.6126">arXiv:1103.6126</a> <span> [<a href="https://arxiv.org/pdf/1103.6126">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/6/07/P07008">10.1088/1748-0221/6/07/P07008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> On the low-temperature performances of THGEM and THGEM/G-APD multipliers in gaseous and two-phase Xe </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Shemyakina%2C+E">E. Shemyakina</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a>, <a href="/search/physics?searchtype=author&query=Akimov%2C+D">D. Akimov</a>, <a href="/search/physics?searchtype=author&query=Alexandrov%2C+I">I. Alexandrov</a>, <a href="/search/physics?searchtype=author&query=Breskin%2C+A">A. Breskin</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="1103.6126v2-abstract-short" style="display: inline;"> The performances of THGEM multipliers in two-phase Xe avalanche mode are presented for the first time. Additional results on THGEM operation in gaseous Xe at cryogenic temperatures are provided. Stable operation of a double-THGEM multiplier was demonstrated in two-phase Xe with gains reaching 600. These are compared to existing data, summarized here for two-phase Ar, Kr and Xe avalanche detectors… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1103.6126v2-abstract-full').style.display = 'inline'; document.getElementById('1103.6126v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1103.6126v2-abstract-full" style="display: none;"> The performances of THGEM multipliers in two-phase Xe avalanche mode are presented for the first time. Additional results on THGEM operation in gaseous Xe at cryogenic temperatures are provided. Stable operation of a double-THGEM multiplier was demonstrated in two-phase Xe with gains reaching 600. These are compared to existing data, summarized here for two-phase Ar, Kr and Xe avalanche detectors incorporating GEM and THGEM multipliers. The optical readout of THGEMs with Geiger-mode Avalanche Photodiodes (G-APDs) has been investigated in gaseous Xe at cryogenic temperature; avalanche scintillations were recorded in the Near Infrared (NIR) at wavelengths of up to 950 nm. At avalanche charge gain of 350, the double-THGEM/G-APD multiplier yielded 0.07 photoelectrons per initial ionization electron, corresponding to an avalanche scintillation yield of 0.7 NIR photons per avalanche electron over 4pi. The results are compared with those of two-phase Ar avalanche detectors. The advantages, limitations and possible applications are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1103.6126v2-abstract-full').style.display = 'none'; document.getElementById('1103.6126v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 July, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 March, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">22 pages, 14 figures. Revised Figs. 10,11 and Table 1. To be published in JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 6:P07008,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1102.1825">arXiv:1102.1825</a> <span> [<a href="https://arxiv.org/pdf/1102.1825">pdf</a>, <a href="https://arxiv.org/ps/1102.1825">ps</a>, <a href="https://arxiv.org/format/1102.1825">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1209/0295-5075/94/52001">10.1209/0295-5075/94/52001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Infrared scintillation yield in gaseous and liquid argon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</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="1102.1825v2-abstract-short" style="display: inline;"> The study of primary and secondary scintillations in noble gases and liquids is of paramount importance to rare-event experiments using noble gas media. In the present work, the scintillation yield in gaseous and liquid Ar has for the first time been measured in the near infrared (NIR) and visible region, both for primary and secondary (proportional) scintillations, using Geiger-mode avalanche pho… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.1825v2-abstract-full').style.display = 'inline'; document.getElementById('1102.1825v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1102.1825v2-abstract-full" style="display: none;"> The study of primary and secondary scintillations in noble gases and liquids is of paramount importance to rare-event experiments using noble gas media. In the present work, the scintillation yield in gaseous and liquid Ar has for the first time been measured in the near infrared (NIR) and visible region, both for primary and secondary (proportional) scintillations, using Geiger-mode avalanche photodiodes (G-APDs) and pulsed X-ray irradiation. The primary scintillation yield of the fast component was measured to be 17000 photon/MeV in gaseous Ar in the NIR, in the range of 690-1000 nm, and 510 photon/MeV in liquid Ar, in the range of 400-1000 nm. Proportional NIR scintillations (electroluminescence) in gaseous Ar have been also observed; their amplification parameter at 163 K was measured to be 13 photons per drifting electron per kV. Possible applications of NIR scintillations in high energy physics experiments are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.1825v2-abstract-full').style.display = 'none'; document.getElementById('1102.1825v2-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 April, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 February, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">6 pages, 5 figures. Submitted to Europhysics Letter. Revised Figs. 3 and 4</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Europhys.Lett.94:52001,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1011.0352">arXiv:1011.0352</a> <span> [<a href="https://arxiv.org/pdf/1011.0352">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Belle II Technical Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abe%2C+T">T. Abe</a>, <a href="/search/physics?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/physics?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/physics?searchtype=author&query=Ahn%2C+S">S. Ahn</a>, <a href="/search/physics?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/physics?searchtype=author&query=Akai%2C+K">K. Akai</a>, <a href="/search/physics?searchtype=author&query=Aloi%2C+M">M. Aloi</a>, <a href="/search/physics?searchtype=author&query=Andricek%2C+L">L. Andricek</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+K">K. Aoki</a>, <a href="/search/physics?searchtype=author&query=Arai%2C+Y">Y. Arai</a>, <a href="/search/physics?searchtype=author&query=Arefiev%2C+A">A. Arefiev</a>, <a href="/search/physics?searchtype=author&query=Arinstein%2C+K">K. Arinstein</a>, <a href="/search/physics?searchtype=author&query=Arita%2C+Y">Y. Arita</a>, <a href="/search/physics?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/physics?searchtype=author&query=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/physics?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/physics?searchtype=author&query=Aziz%2C+T">T. Aziz</a>, <a href="/search/physics?searchtype=author&query=Bakich%2C+A+M">A. M. Bakich</a>, <a href="/search/physics?searchtype=author&query=Balagura%2C+V">V. Balagura</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Barberio%2C+E">E. Barberio</a>, <a href="/search/physics?searchtype=author&query=Barvich%2C+T">T. Barvich</a>, <a href="/search/physics?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/physics?searchtype=author&query=Bergauer%2C+T">T. Bergauer</a>, <a href="/search/physics?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a> , et al. (387 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="1011.0352v1-abstract-short" style="display: inline;"> The Belle detector at the KEKB electron-positron collider has collected almost 1 billion Y(4S) events in its decade of operation. Super-KEKB, an upgrade of KEKB is under construction, to increase the luminosity by two orders of magnitude during a three-year shutdown, with an ultimate goal of 8E35 /cm^2 /s luminosity. To exploit the increased luminosity, an upgrade of the Belle detector has been pr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1011.0352v1-abstract-full').style.display = 'inline'; document.getElementById('1011.0352v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1011.0352v1-abstract-full" style="display: none;"> The Belle detector at the KEKB electron-positron collider has collected almost 1 billion Y(4S) events in its decade of operation. Super-KEKB, an upgrade of KEKB is under construction, to increase the luminosity by two orders of magnitude during a three-year shutdown, with an ultimate goal of 8E35 /cm^2 /s luminosity. To exploit the increased luminosity, an upgrade of the Belle detector has been proposed. A new international collaboration Belle-II, is being formed. The Technical Design Report presents physics motivation, basic methods of the accelerator upgrade, as well as key improvements of the detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1011.0352v1-abstract-full').style.display = 'none'; document.getElementById('1011.0352v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 November, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">Edited by: Z. Dole啪al and S. Uno</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> KEK Report 2010-1 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1005.5216">arXiv:1005.5216</a> <span> [<a href="https://arxiv.org/pdf/1005.5216">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/10.1088/1748-0221/5/08/P08002">10.1088/1748-0221/5/08/P08002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct observation of avalanche scintillations in a THGEM-based two-phase Ar avalanche detector using Geiger-mode APD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a>, <a href="/search/physics?searchtype=author&query=Akimov%2C+D">D. Akimov</a>, <a href="/search/physics?searchtype=author&query=Alexandrov%2C+I">I. Alexandrov</a>, <a href="/search/physics?searchtype=author&query=Breskin%2C+A">A. Breskin</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="1005.5216v1-abstract-short" style="display: inline;"> A novel concept of optical signal recording in two-phase avalanche detectors, with Geiger-mode Avalanche Photodiodes (G-APD) is described. Avalanche-scintillation photons were measured in a thick Gas Electron Multiplier (THGEM) in view of potential applications in rare-event experiments. The effective detection of avalanche scintillations in THGEM holes has been demonstrated in two-phase Ar with a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.5216v1-abstract-full').style.display = 'inline'; document.getElementById('1005.5216v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1005.5216v1-abstract-full" style="display: none;"> A novel concept of optical signal recording in two-phase avalanche detectors, with Geiger-mode Avalanche Photodiodes (G-APD) is described. Avalanche-scintillation photons were measured in a thick Gas Electron Multiplier (THGEM) in view of potential applications in rare-event experiments. The effective detection of avalanche scintillations in THGEM holes has been demonstrated in two-phase Ar with a bare G-APD without wavelength shifter, i.e. insensitive to VUV emission of Ar. At gas-avalanche gain of 400 and under \pm 70^\circ viewing-angle, the G-APD yielded 640 photoelectrons (pe) per 60 keV X-ray converted in liquid Ar; this corresponds to 0.7 pe per initial (prior to multiplication) electron. The avalanche-scintillation light yield measured by the G-APD was about 0.7 pe per avalanche electron, extrapolated to 4pi acceptance. The avalanche scintillations observed occurred presumably in the near infrared (NIR) where G-APDs may have high sensitivity. The measured scintillation yield is similar to that observed by others in the VUV. Other related topics discussed in this work are the G-APD's single-pixel and quenching resistor characteristics at cryogenic temperatures. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.5216v1-abstract-full').style.display = 'none'; document.getElementById('1005.5216v1-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> 28 May, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">21 pages, 18 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 5:P08002,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1003.1597">arXiv:1003.1597</a> <span> [<a href="https://arxiv.org/pdf/1003.1597">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2010.07.002">10.1016/j.nima.2010.07.002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Geiger Mode APD performance in a cryogenic two-phase Ar avalanche detector based on THGEMs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Sokolov%2C+A">A. Sokolov</a>, <a href="/search/physics?searchtype=author&query=Akimov%2C+D">D. Akimov</a>, <a href="/search/physics?searchtype=author&query=Alexandrov%2C+I">I. Alexandrov</a>, <a href="/search/physics?searchtype=author&query=Breskin%2C+A">A. Breskin</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="1003.1597v3-abstract-short" style="display: inline;"> Characteristic properties of a Geiger Mode APD (G-APD) in a THGEM-based cryogenic two-phase Ar avalanche detector were studied in view of potential applications in rare-event experiments. G-APD signal amplitude and noise characteristics at cryogenic temperatures turned out to be superior to those at room temperature. The effective detection of avalanche scintillations from THGEM-multiplier holes i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1003.1597v3-abstract-full').style.display = 'inline'; document.getElementById('1003.1597v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1003.1597v3-abstract-full" style="display: none;"> Characteristic properties of a Geiger Mode APD (G-APD) in a THGEM-based cryogenic two-phase Ar avalanche detector were studied in view of potential applications in rare-event experiments. G-APD signal amplitude and noise characteristics at cryogenic temperatures turned out to be superior to those at room temperature. The effective detection of avalanche scintillations from THGEM-multiplier holes in two-phase Ar has been demonstrated using a G-APD without wavelength shifter. At an avalanche gain of 60, the avalanche scintillation yield measured by the G-APD was as high as 0.9 photoelectrons per avalanche electron, extrapolated to 4pi acceptance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1003.1597v3-abstract-full').style.display = 'none'; document.getElementById('1003.1597v3-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 May, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 March, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">4 pages, 8 figures. Presented at Vienna Conference on Instrumentation (Feb 15-20, 2010, Vienna, Austria). Submitted to the Proceedings</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A628:364-368,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0908.2915">arXiv:0908.2915</a> <span> [<a href="https://arxiv.org/pdf/0908.2915">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/10.1088/1748-0221/4/09/P09013">10.1088/1748-0221/4/09/P09013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Electron emission properties of two-phase argon and argon-nitrogen avalanche detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Pavlyuchenko%2C+D">D. Pavlyuchenko</a>, <a href="/search/physics?searchtype=author&query=Tikhonov%2C+Y">Y. Tikhonov</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="0908.2915v1-abstract-short" style="display: inline;"> Electron emission properties of two-phase Ar avalanche detectors are studied. The detectors investigated comprised a liquid Ar or Ar+N2 layer followed by a multi-GEM multiplier operated in the saturated vapour at 84 K. Two components of the electron emission through the liquid-gas interface were observed: fast and slow. In Ar, the slow emission component dominated even at higher fields, reaching… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0908.2915v1-abstract-full').style.display = 'inline'; document.getElementById('0908.2915v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0908.2915v1-abstract-full" style="display: none;"> Electron emission properties of two-phase Ar avalanche detectors are studied. The detectors investigated comprised a liquid Ar or Ar+N2 layer followed by a multi-GEM multiplier operated in the saturated vapour at 84 K. Two components of the electron emission through the liquid-gas interface were observed: fast and slow. In Ar, the slow emission component dominated even at higher fields, reaching 2 kV/cm. In Ar+N2 on the contrary, the fast emission component dominated at higher fields, the slow component being disappeared. This is explained by the electron backscattering effect in the gas phase. The slow component decay time constant was inversely proportional to the electric field, which is compatible with thermionic emission model. The electron emission efficiencies in two-phase Ar and Ar+N2 were estimated to be close to each other. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0908.2915v1-abstract-full').style.display = 'none'; document.getElementById('0908.2915v1-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 August, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 15 figures, to be submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 4:P09013,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0807.0530">arXiv:0807.0530</a> <span> [<a href="https://arxiv.org/pdf/0807.0530">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2008.08.016">10.1016/j.nima.2008.08.016 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Recent results on the properties of two-phase argon avalanche detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Pavlyuchenko%2C+D">D. Pavlyuchenko</a>, <a href="/search/physics?searchtype=author&query=Tikhonov%2C+Y">Y. Tikhonov</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="0807.0530v1-abstract-short" style="display: inline;"> The characteristic properties of two-phase Ar avalanche detectors, including those obtained with CsI photocathode, are further studied. Such detectors are relevant in the field of coherent neutrino-nucleus scattering and dark matter search experiments. The detectors investigated comprised a 1 cm thick liquid Ar layer followed by a triple-GEM multiplier. In these detectors, typical gains reaching… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0807.0530v1-abstract-full').style.display = 'inline'; document.getElementById('0807.0530v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0807.0530v1-abstract-full" style="display: none;"> The characteristic properties of two-phase Ar avalanche detectors, including those obtained with CsI photocathode, are further studied. Such detectors are relevant in the field of coherent neutrino-nucleus scattering and dark matter search experiments. The detectors investigated comprised a 1 cm thick liquid Ar layer followed by a triple-GEM multiplier. In these detectors, typical gains reaching 10000 were obtained with good reproducibility and a stable operation for at least one day was demonstrated. Amplitude and pulse-shape characteristics are presented under irradiation with X-rays, gamma-rays and neutrons from different radioactive sources. The detection of both primary scintillation and ionization signals at higher gains, at a deposited energy of 60 keV, has been demonstrated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0807.0530v1-abstract-full').style.display = 'none'; document.getElementById('0807.0530v1-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> 3 July, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 11 figures. Presented at Xth Int. Conf. for Collid. Beam Phys., Feb 28 - March 6, 2008, Novosibirsk, to be published in Nucl. Instr. Meth. A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A598:121-125,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0805.2018">arXiv:0805.2018</a> <span> [<a href="https://arxiv.org/pdf/0805.2018">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/10.1088/1748-0221/3/07/P07001">10.1088/1748-0221/3/07/P07001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thick GEM versus thin GEM in two-phase argon avalanche detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Pavlyuchenko%2C+D">D. Pavlyuchenko</a>, <a href="/search/physics?searchtype=author&query=Tikhonov%2C+Y">Y. Tikhonov</a>, <a href="/search/physics?searchtype=author&query=Breskin%2C+A">A. Breskin</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="0805.2018v1-abstract-short" style="display: inline;"> The performance of thick GEMs (THGEMs) was compared to that of thin GEMs in two-phase Ar avalanche detectors, in view of their potential application in coherent neutrino-nucleus scattering, dark-matter search and in other rare-event experiments. The detectors comprised a 1 cm thick liquid-Ar layer followed by either a double-THGEM or a triple-GEM multiplier, operated in the saturated vapor above… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0805.2018v1-abstract-full').style.display = 'inline'; document.getElementById('0805.2018v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0805.2018v1-abstract-full" style="display: none;"> The performance of thick GEMs (THGEMs) was compared to that of thin GEMs in two-phase Ar avalanche detectors, in view of their potential application in coherent neutrino-nucleus scattering, dark-matter search and in other rare-event experiments. The detectors comprised a 1 cm thick liquid-Ar layer followed by either a double-THGEM or a triple-GEM multiplier, operated in the saturated vapor above the liquid phase. Three types of THGEMs were studied: those made of G10 and Kevlar and that with resistive electrodes (RETHGEM). Only the G10-made THGEM showed a stable performance in two-phase Ar with gains reaching 3000. Successful operation of two-phase Ar avalanche detectors with either thin- or thick-GEM multipliers was demonstrated at low detection thresholds, of 4 and 20 primary electrons respectively. Compared to the triple-GEM the double-THGEM multiplier yielded slower anode signals; this allowed applying a pulse-shape analysis to effectively reject noise signals. Noise rates of both multipliers were evaluated in two-phase Ar; with detection thresholds of 20 electrons and applying pulse-shape analysis noise levels as low as 0.007 Hz per 1 cm2 of active area were reached. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0805.2018v1-abstract-full').style.display = 'none'; document.getElementById('0805.2018v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 May, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 19 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2008 JINST 3 P07001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0702237">arXiv:physics/0702237</a> <span> [<a href="https://arxiv.org/pdf/physics/0702237">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2007.07.086">10.1016/j.nima.2007.07.086 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First results of the two-phase argon avalanche detector performance with CsI photocathode </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Pavlyuchenko%2C+D">D. Pavlyuchenko</a>, <a href="/search/physics?searchtype=author&query=Snopkov%2C+R">R. Snopkov</a>, <a href="/search/physics?searchtype=author&query=Tikhonov%2C+Y">Y. Tikhonov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0702237v1-abstract-short" style="display: inline;"> The performance of a two-phase Ar avalanche detector with CsI photocathode was studied, with regard to potential application in coherent neutrino-nucleus scattering and dark matter search experiments. The detector comprised a 1 cm thick liquid Ar layer and a triple-GEM multiplier operated in the saturated vapor above the liquid phase; the CsI photocathode was deposited on the first GEM. Successf… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0702237v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0702237v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0702237v1-abstract-full" style="display: none;"> The performance of a two-phase Ar avalanche detector with CsI photocathode was studied, with regard to potential application in coherent neutrino-nucleus scattering and dark matter search experiments. The detector comprised a 1 cm thick liquid Ar layer and a triple-GEM multiplier operated in the saturated vapor above the liquid phase; the CsI photocathode was deposited on the first GEM. Successful detection of both primary scintillation and ionization signals, produced by beta-particles in liquid Ar, has for the first time been demonstrated in the two-phase avalanche mode. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0702237v1-abstract-full').style.display = 'none'; document.getElementById('physics/0702237v1-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 February, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2007. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 8 figures. Presented at the 11th Vienna Conference on Instrumentation, Feb 19-24, 2007</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A581:241-245,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0611068">arXiv:physics/0611068</a> <span> [<a href="https://arxiv.org/pdf/physics/0611068">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2007.01.090">10.1016/j.nima.2007.01.090 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A two-phase argon avalanche detector operated in a single electron counting mode </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Grebenuk%2C+A">A. Grebenuk</a>, <a href="/search/physics?searchtype=author&query=Pavlyuchenko%2C+D">D. Pavlyuchenko</a>, <a href="/search/physics?searchtype=author&query=Snopkov%2C+R">R. Snopkov</a>, <a href="/search/physics?searchtype=author&query=Tikhonov%2C+Y">Y. Tikhonov</a>, <a href="/search/physics?searchtype=author&query=Kudryavtsev%2C+V+A">V. A. Kudryavtsev</a>, <a href="/search/physics?searchtype=author&query=Lightfoot%2C+P+K">P. K. Lightfoot</a>, <a href="/search/physics?searchtype=author&query=Spooner%2C+N+J+C">N. J. C. Spooner</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0611068v1-abstract-short" style="display: inline;"> The performance of a two-phase Ar avalanche detector in a single electron counting mode was studied, with regard to potential application in coherent neutrino-nucleus scattering and dark matter search experiments. The detector comprised of a 1 cm thick liquid Ar layer and a triple-GEM multiplier operated in the saturated vapour above the liquid phase. Successful operation of the detector in sing… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0611068v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0611068v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0611068v1-abstract-full" style="display: none;"> The performance of a two-phase Ar avalanche detector in a single electron counting mode was studied, with regard to potential application in coherent neutrino-nucleus scattering and dark matter search experiments. The detector comprised of a 1 cm thick liquid Ar layer and a triple-GEM multiplier operated in the saturated vapour above the liquid phase. Successful operation of the detector in single electron counting mode, in the gain range from 6000 to 40000, has for the first time been demonstrated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0611068v1-abstract-full').style.display = 'none'; document.getElementById('physics/0611068v1-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 November, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2006. </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, 9 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A574:493-499,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0610059">arXiv:physics/0610059</a> <span> [<a href="https://arxiv.org/pdf/physics/0610059">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Triple-GEM performance in He-based mixtures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a>, <a href="/search/physics?searchtype=author&query=Vasiljev%2C+A">A. Vasiljev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0610059v1-abstract-short" style="display: inline;"> The performance of triple-GEM detectors in He+N2 gas mixtures is studied in the range of 1-10 atm. The results obtained are relevant in the field of minimization of ionic space-charge effect in the TPC and neutron detection. </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0610059v1-abstract-full" style="display: none;"> The performance of triple-GEM detectors in He+N2 gas mixtures is studied in the range of 1-10 atm. The results obtained are relevant in the field of minimization of ionic space-charge effect in the TPC and neutron detection. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0610059v1-abstract-full').style.display = 'none'; document.getElementById('physics/0610059v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 October, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2006. </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">2 pages, 2 figures. Presented at the International Conference on Linear Colliders, Paris, April 19-23, 2004</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0606241">arXiv:physics/0606241</a> <span> [<a href="https://arxiv.org/pdf/physics/0606241">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/10.1088/1748-0221/1/08/P08006">10.1088/1748-0221/1/08/P08006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Electric and Photoelectric Gates for ion backflow suppression in multi-GEM structures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0606241v3-abstract-short" style="display: inline;"> A new approach to suppress ion backflow in multi-GEM structures is suggested. In this approach, the potential difference applied across the gap between two adjacent GEMs is reversed compared to the standard configuration. In such a gap structure, called Electric Gate, a signal transfer from the first to second GEM is presumably provided by the small residual field still existing at small gate vo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0606241v3-abstract-full').style.display = 'inline'; document.getElementById('physics/0606241v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0606241v3-abstract-full" style="display: none;"> A new approach to suppress ion backflow in multi-GEM structures is suggested. In this approach, the potential difference applied across the gap between two adjacent GEMs is reversed compared to the standard configuration. In such a gap structure, called Electric Gate, a signal transfer from the first to second GEM is presumably provided by the small residual field still existing at small gate voltages and connecting the holes of the two GEMs. On the other hand, ion backflow between the GEMs turned out to be substantially reduced. We also consider another configuration, called Photoelectric Gate, in which in addition to the Electric Gate configuration, a CsI photocathode is deposited on the second GEM. In the Photoelectric Gate, ion backflow through the gap is fully suppressed and the signal transfer through the gap is provided by the photoelectric mechanism due to either avalanche scintillations in the first GEM or proportional scintillations in the electroluminescence gap replacing the first GEM. The idea of the Electric Gate might find applications in the field of TPC detectors and gas photomultipliers. The idea of the Photoelectric Gate is more relevant in the field of two-phase avalanche detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0606241v3-abstract-full').style.display = 'none'; document.getElementById('physics/0606241v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 August, 2006; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 June, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2006. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 14 figures. Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST1:P08006,2006 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0511037">arXiv:physics/0511037</a> <span> [<a href="https://arxiv.org/pdf/physics/0511037">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2005.11.098">10.1016/j.nima.2005.11.098 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Light multi-GEM detector for high-resolution tracking systems </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/physics?searchtype=author&query=Buzulutskov%2C+A">A. Buzulutskov</a>, <a href="/search/physics?searchtype=author&query=de+Oliveira%2C+R">R. de Oliveira</a>, <a href="/search/physics?searchtype=author&query=Ropelewski%2C+L">L. Ropelewski</a>, <a href="/search/physics?searchtype=author&query=Sauli%2C+F">F. Sauli</a>, <a href="/search/physics?searchtype=author&query=Shekhtman%2C+L">L. Shekhtman</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0511037v1-abstract-short" style="display: inline;"> Controlled etching of copper electrodes in Gas Electron Multiplier foils allows a reduction of the material budget by more than a factor of two for a triple-GEM detector. Detectors making use of thinned foils provide performances similar to those obtained with standard devices: a gain above 10^4 for a double-GEM, with energy resolution of 27 % fwhm for 5.9 keV X-rays. </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0511037v1-abstract-full" style="display: none;"> Controlled etching of copper electrodes in Gas Electron Multiplier foils allows a reduction of the material budget by more than a factor of two for a triple-GEM detector. Detectors making use of thinned foils provide performances similar to those obtained with standard devices: a gain above 10^4 for a double-GEM, with energy resolution of 27 % fwhm for 5.9 keV X-rays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0511037v1-abstract-full').style.display = 'none'; document.getElementById('physics/0511037v1-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 November, 2005; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2005. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Nucl.Instr.& Meth. A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A556:495-497,2006 </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Bondar%2C+A&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Bondar%2C+A&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Bondar%2C+A&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <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 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><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 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

CINXE.COM

Search | arXiv e-print repository