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In the scope of this study, a future operation of the NA62 experiment using the existing K12 beam line operated in beam dump mode is discussed. Such a setup allows for a search for dark sector particles, e.g. heavy neutral leptons, dark photons and axions. Production of these hypothetical particles requires the 400GeV/c proton beam extracted from the Super Proton Synchrotron (SPS) to be dumped on a massive dump collimator located in the first part of the K12 beam line. The decay of these dark sector particles, for example, into muons could be detected by the NA62 experimental setup. However, muons created in particle interactions with material and from in-flight decays of secondary hadrons pose a critical background for this kind of experiment. Magnetic sweeping serves as an efficient tool for reducing this background. This paper discusses the simulation studies conducted with the software framework G4beamline to reduce the expected single-muon rate for this experiment. The required beam line modifications, in particular the removal of the beryllium target and repositioning of the dump, have been implemented into this model. A comparison of simulated muon distributions and spectra available experimental data, already taken in test runs, has been made in order to validate the beam line simulation. Finally, additional beam line modifications to further suppress the muon background are elaborated upon. These studies show a potential further reduction of a factor four of the total single-muon rate relative to the nominal setup over the full momentum range, and up to a factor twenty considering only muons with momenta p > 15GeV/c. Rosenthal, M; Banerjee, D; Bernhard, J; Brugger, M; Charitonidis, N; van Dijk, M; Döbrich, B; Gatignon, L; Gerbershagen, A; Montbarbon, E; Rae, B; Spadaro, T" /> <meta name="keywords" content="Physics beyond colliders, G4beamline, CERN North area, NA62 experiment" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/>  <meta content="WSP : Single-muon rate reduction for beam dump operation of the K12 beam line at CERN" name="citation_title" /> <meta content="Rosenthal, M" name="citation_author" /> <meta content="Spadaro, T" name="citation_author" /> <meta content="van Dijk, M" name="citation_author" /> <meta content="Rae, B" name="citation_author" /> <meta content="Brugger, M" name="citation_author" /> <meta content="Banerjee, D" name="citation_author" /> <meta content="Charitonidis, N" name="citation_author" /> <meta content="Gerbershagen, A" name="citation_author" /> <meta content="Döbrich, B" name="citation_author" /> <meta content="Bernhard, J" name="citation_author" /> <meta content="Montbarbon, E" name="citation_author" /> <meta content="Gatignon, L" name="citation_author" /> <meta content="10.1142/S0217751X19420260" name="citation_doi" /> <meta content="Int. J. Mod. Phys. A" name="citation_journal_title" /> <meta content="34" name="citation_volume" /> <meta content="1942026" name="citation_firstpage" /> <meta content="2019" name="citation_publication_date" /> <meta name="citation_online_date" content="2020/03/04"> <meta content="10.1142/S0217751X19420260" name="citation_doi" />  <meta content="WSP" property="og:title" /> <meta content="Single-muon rate reduction for beam dump operation of the K12 beam line at CERN" property="og:title" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2712062" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="WSP" property="og:description" /> <meta content="The Physics Beyond Colliders study investigates the feasibility of future projects and experiments using CERN facilities. In the scope of this study, a future operation of the NA62 experiment using the existing K12 beam line operated in beam dump mode is discussed. Such a setup allows for a search for dark sector particles, e.g. heavy neutral leptons, dark photons and axions. Production of these hypothetical particles requires the 400GeV/c proton beam extracted from the Super Proton Synchrotron (SPS) to be dumped on a massive dump collimator located in the first part of the K12 beam line. The decay of these dark sector particles, for example, into muons could be detected by the NA62 experimental setup. However, muons created in particle interactions with material and from in-flight decays of secondary hadrons pose a critical background for this kind of experiment. Magnetic sweeping serves as an efficient tool for reducing this background. This paper discusses the simulation studies conducted with the software framework G4beamline to reduce the expected single-muon rate for this experiment. The required beam line modifications, in particular the removal of the beryllium target and repositioning of the dump, have been implemented into this model. A comparison of simulated muon distributions and spectra available experimental data, already taken in test runs, has been made in order to validate the beam line simulation. Finally, additional beam line modifications to further suppress the muon background are elaborated upon. These studies show a potential further reduction of a factor four of the total single-muon rate relative to the nominal setup over the full momentum range, and up to a factor twenty considering only muons with momenta p &gt; 15GeV/c." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="en">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accelerating science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=en&referer=https%3A//cds.cern.ch/record/2712062/export/hm%3Fln%3Den" title="Sign in to your CERN account">Sign in</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div>   <div role="banner" class="clearfix" id="header"> <div class="header-inner inner"> <hgroup class="clearfix"> <h2 id="site-name"> <a rel="home" title="Home" href="/"><span>CERN Document Server</span></a> </h2> <h3 id="site-slogan">Access articles, reports and multimedia content in HEP</h3> </hgroup> <div role="navigation" id="main-navigation" class="cdsmenu"> <h2 class="element-invisible">Main menu</h2><ul class="links inline clearfix"> <li class="menu-386 first active-trail"><a class="active-trail" href="https://cds.cern.ch/?ln=en">Search</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=en">Submit</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=en">Help</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=en">Personalize</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=en">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=en">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=en">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=en">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=en" class="navtrail">Home</a> > <a class="navtrail" href="/record/2712062">Single-muon rate reduction for beam dump operation of the K12 beam line at CERN</a> > HTML MARC </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <pre style="margin: 1em 0px;">002712062 001__ 2712062 002712062 003__ SzGeCERN 002712062 005__ 20200401111602.0 002712062 0247_ $$2DOI$$9WSP$$a10.1142/S0217751X19420260 002712062 0248_ $$aoai:inspirehep.net:1782110$$pcerncds:CERN$$qINSPIRE:HEP$$qForCDS 002712062 035__ $$9http://inspirehep.net/oai2d$$aoai:inspirehep.net:1782110$$d2020-03-03T16:05:34Z$$h2020-03-04T05:00:25Z$$mmarcxml 002712062 035__ $$9Inspire$$a1782110 002712062 041__ $$aeng 002712062 100__ $$aRosenthal, M$$mmarcel.rosenthal@cern.ch$$uCERN 002712062 245__ $$9WSP$$aSingle-muon rate reduction for beam dump operation of the K12 beam line at CERN 002712062 260__ $$c2019 002712062 300__ $$a12 p 002712062 520__ $$9WSP$$aThe Physics Beyond Colliders study investigates the feasibility of future projects and experiments using CERN facilities. In the scope of this study, a future operation of the NA62 experiment using the existing K12 beam line operated in beam dump mode is discussed. Such a setup allows for a search for dark sector particles, e.g. heavy neutral leptons, dark photons and axions. Production of these hypothetical particles requires the 400GeV/c proton beam extracted from the Super Proton Synchrotron (SPS) to be dumped on a massive dump collimator located in the first part of the K12 beam line. The decay of these dark sector particles, for example, into muons could be detected by the NA62 experimental setup. However, muons created in particle interactions with material and from in-flight decays of secondary hadrons pose a critical background for this kind of experiment. Magnetic sweeping serves as an efficient tool for reducing this background. This paper discusses the simulation studies conducted with the software framework G4beamline to reduce the expected single-muon rate for this experiment. The required beam line modifications, in particular the removal of the beryllium target and repositioning of the dump, have been implemented into this model. A comparison of simulated muon distributions and spectra available experimental data, already taken in test runs, has been made in order to validate the beam line simulation. Finally, additional beam line modifications to further suppress the muon background are elaborated upon. These studies show a potential further reduction of a factor four of the total single-muon rate relative to the nominal setup over the full momentum range, and up to a factor twenty considering only muons with momenta p > 15GeV/c. 002712062 542__ $$3publication$$dWorld Scientific Publishing Company$$g2019 002712062 65017 $$2SzGeCERN$$aAccelerators and Storage Rings 002712062 6531_ $$9author$$aPhysics beyond colliders 002712062 6531_ $$9author$$aG4beamline 002712062 6531_ $$9author$$aCERN North area 002712062 6531_ $$9author$$aNA62 experiment 002712062 690C_ $$aCERN 002712062 693__ $$aCERN SPS$$bK12$$eNA62 002712062 700__ $$aBanerjee, D$$uCERN 002712062 700__ $$aBernhard, J$$uCERN 002712062 700__ $$aBrugger, M$$uCERN 002712062 700__ $$aCharitonidis, N$$uCERN 002712062 700__ $$avan Dijk, M$$uCERN 002712062 700__ $$aDöbrich, B$$uCERN 002712062 700__ $$aGatignon, L$$uCERN 002712062 700__ $$aGerbershagen, A$$uCERN 002712062 700__ $$aMontbarbon, E$$uCERN 002712062 700__ $$aRae, B$$uCERN 002712062 700__ $$aSpadaro, T$$uLNF, Dafne Light 002712062 773__ $$c1942026$$n36$$pInt. J. Mod. Phys. A$$v34$$y2019 002712062 960__ $$a13 002712062 980__ $$aARTICLE</pre></div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=en">Search</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=en">Submit</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=en">Personalize</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=en">Help</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> :: <a class="footer" href="https://repository.cern/content-policy" target="_blank">Content Policy</a> :: <a class="footer" href="https://repository.cern/terms" target="_blank">Terms and Conditions</a> <br /> Powered by <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Maintained by <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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