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The thicknesses of the concrete and steel shielding blocks ranged from 40 cm to 200 cm and from 20 cm to 80 cm, respectively. The BSS consisted of a spherical 3He proportional counter and five polyethylene moderators with diameters of 7.62 cm, 10.2 cm, 12.7 cm, 17.8 cm, and 24.1 cm, respectively. In addition, polyethylene moderators combined with a lead or copper inner shell were used to increase the sensitivity to high-energy neutrons. The neutron energy spectra were deduced using an unfolding method. The initial guesses were obtained using the PHITS code for each experimental geometry. The response function for the BSS was determined using the MCNP6.2 code with JENDL-4.0/HE. The neutron energy spectra over the entire energy region from 10−4 eV to 10 GeV were successfully obtained for the different shielding conditions. The validity of the response function and the contribution of each moderator are discussed referring to previous studies and tests at the standard neutron fields of AIST. Matsumoto, Tetsuro; Masuda, Akihiko; Lee, Eunji; Sanami, Toshiya; Oyama, Takahiro; Kajimoto, Tsuyoshi; Nakao, Noriaki; Yashima, Hiroshi; Nagaguro, Seiji; Uwamino, Yoshitomo; Manabe, Seiya; Shigyo, Nobuhiro; Harano, Hideki; Froeschl, Robert; Iliopoulou, Elpida; Infantino, Angelo; Roesler, Stefan; Brugger, Markus" /> <meta name="keywords" content="Neutrons, concrete shielding, steel shielding, high-energy neutrons, Bonner sphere spectrometer, unfolding" /> <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="Taylor and Francis : Measurement of neutron spectra for various thicknesses of concrete and steel shielding at 24-GeV/c proton beam facility using Bonner sphere spectrometer" name="citation_title" /> <meta content="Matsumoto, Tetsuro" name="citation_author" /> <meta content="Uwamino, Yoshitomo" name="citation_author" /> <meta content="Manabe, Seiya" name="citation_author" /> <meta content="Shigyo, Nobuhiro" name="citation_author" /> <meta content="Oyama, Takahiro" name="citation_author" /> <meta content="Iliopoulou, Elpida" name="citation_author" /> <meta content="Nakao, Noriaki" name="citation_author" /> <meta content="Lee, Eunji" name="citation_author" /> <meta content="Nagaguro, Seiji" name="citation_author" /> <meta content="Roesler, Stefan" name="citation_author" /> <meta content="Kajimoto, Tsuyoshi" name="citation_author" /> <meta content="Froeschl, Robert" name="citation_author" /> <meta content="Sanami, Toshiya" name="citation_author" /> <meta content="Harano, Hideki" name="citation_author" /> <meta content="Masuda, Akihiko" name="citation_author" /> <meta content="Yashima, Hiroshi" name="citation_author" /> <meta content="Brugger, Markus" name="citation_author" /> <meta content="Infantino, Angelo" name="citation_author" /> <meta content="10.1080/00223131.2023.2274933" name="citation_doi" /> <meta content="J. 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Tech." name="citation_journal_title" /> <meta content="61" name="citation_volume" /> <meta content="98-110" name="citation_firstpage" /> <meta content="2024" name="citation_publication_date" /> <meta name="citation_online_date" content="2024/03/09"> <meta content="10.1080/00223131.2023.2274933" name="citation_doi" />  <meta content="Taylor and Francis" property="og:title" /> <meta content="Measurement of neutron spectra for various thicknesses of concrete and steel shielding at 24-GeV/c proton beam facility using Bonner sphere spectrometer" property="og:title" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2891203" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="Taylor and Francis" property="og:description" /> <meta content="Neutron energy spectra down to thermal energy were measured using a Bonner sphere spectrometer (BSS) for various thicknesses of concrete and steel shielding at the CERN/CHARM facility, where high-energy neutrons were produced by 24-GeV/c protons incident on a thick copper target. The thicknesses of the concrete and steel shielding blocks ranged from 40 cm to 200 cm and from 20 cm to 80 cm, respectively. The BSS consisted of a spherical 3He proportional counter and five polyethylene moderators with diameters of 7.62 cm, 10.2 cm, 12.7 cm, 17.8 cm, and 24.1 cm, respectively. In addition, polyethylene moderators combined with a lead or copper inner shell were used to increase the sensitivity to high-energy neutrons. The neutron energy spectra were deduced using an unfolding method. The initial guesses were obtained using the PHITS code for each experimental geometry. The response function for the BSS was determined using the MCNP6.2 code with JENDL-4.0/HE. The neutron energy spectra over the entire energy region from 10−4 eV to 10 GeV were successfully obtained for the different shielding conditions. The validity of the response function and the contribution of each moderator are discussed referring to previous studies and tests at the standard neutron fields of AIST." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="es">  <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=es&referer=https%3A//cds.cern.ch/record/2891203/export/hm%3Fln%3Des" 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=es">Buscar</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=es">Enviar</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=es">Ayuda</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=es">Personalizar</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=es">Sus alertas</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=es">Sus cestas</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=es">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=es">Sus búsquedas</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=es" class="navtrail">Página principal</a> > <a class="navtrail" href="/record/2891203">Measurement of neutron spectra for various thicknesses of concrete and steel shielding at 24-GeV/c proton beam facility using Bonner sphere spectrometer</a> > HTML MARC </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <pre style="margin: 1em 0px;">002891203 001__ 2891203 002891203 003__ SzGeCERN 002891203 005__ 20240309214653.0 002891203 0247_ $$2DOI$$9Taylor and Francis$$a10.1080/00223131.2023.2274933 002891203 0248_ $$aoai:cds.cern.ch:2891203$$pcerncds:CERN 002891203 035__ $$9https://inspirehep.net/api/oai2d$$aoai:inspirehep.net:2763284$$d2024-03-08T13:28:56Z$$h2024-03-09T05:00:09Z$$mmarcxml 002891203 035__ $$9Inspire$$a2763284 002891203 041__ $$aeng 002891203 100__ $$aMatsumoto, Tetsuro$$jORCID:0000-0003-2047-7028$$mt-matsumoto@aist.go.jp$$uAIST, Tsukuba 002891203 245__ $$9Taylor and Francis$$aMeasurement of neutron spectra for various thicknesses of concrete and steel shielding at 24-GeV/c proton beam facility using Bonner sphere spectrometer 002891203 260__ $$c2024 002891203 300__ $$a13 p 002891203 520__ $$9Taylor and Francis$$aNeutron energy spectra down to thermal energy were measured using a Bonner sphere spectrometer (BSS) for various thicknesses of concrete and steel shielding at the CERN/CHARM facility, where high-energy neutrons were produced by 24-GeV/c protons incident on a thick copper target. The thicknesses of the concrete and steel shielding blocks ranged from 40 cm to 200 cm and from 20 cm to 80 cm, respectively. The BSS consisted of a spherical 3He proportional counter and five polyethylene moderators with diameters of 7.62 cm, 10.2 cm, 12.7 cm, 17.8 cm, and 24.1 cm, respectively. In addition, polyethylene moderators combined with a lead or copper inner shell were used to increase the sensitivity to high-energy neutrons. The neutron energy spectra were deduced using an unfolding method. The initial guesses were obtained using the PHITS code for each experimental geometry. The response function for the BSS was determined using the MCNP6.2 code with JENDL-4.0/HE. The neutron energy spectra over the entire energy region from 10−4 eV to 10 GeV were successfully obtained for the different shielding conditions. The validity of the response function and the contribution of each moderator are discussed referring to previous studies and tests at the standard neutron fields of AIST. 002891203 542__ $$dAtomic Energy Society of Japan$$g2023 002891203 6531_ $$9author$$aNeutrons 002891203 6531_ $$9author$$aconcrete shielding 002891203 6531_ $$9author$$asteel shielding 002891203 6531_ $$9author$$ahigh-energy neutrons 002891203 6531_ $$9author$$aBonner sphere spectrometer 002891203 6531_ $$9author$$aunfolding 002891203 690C_ $$aARTICLE 002891203 690C_ $$aCERN 002891203 693__ $$aCERN CHARM 002891203 700__ $$aMasuda, Akihiko$$jORCID:0000-0003-0572-0341$$uAIST, Tsukuba 002891203 700__ $$aLee, Eunji$$jORCID:0000-0002-0600-2571$$uKEK, Tsukuba$$uKyushu U.$$vc Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka, Japan 002891203 700__ $$aSanami, Toshiya$$jORCID:0000-0003-2255-8008$$uKEK, Tsukuba 002891203 700__ $$aOyama, Takahiro$$jORCID:0000-0002-9425-0275$$uKEK, Tsukuba 002891203 700__ $$aKajimoto, Tsuyoshi$$jORCID:0009-0003-6133-3888$$uHiroshima U. 002891203 700__ $$aNakao, Noriaki$$jORCID:0000-0002-5910-8222$$uShimizu, Tokyo 002891203 700__ $$aYashima, Hiroshi$$jORCID:0000-0003-0931-5984$$uKyoto U. 002891203 700__ $$aNagaguro, Seiji$$uKEK, Tsukuba 002891203 700__ $$aUwamino, Yoshitomo$$jORCID:0000-0002-8359-3520$$uShimizu, Tokyo 002891203 700__ $$aManabe, Seiya$$jORCID:0000-0003-4265-7089$$uAIST, Tsukuba 002891203 700__ $$aShigyo, Nobuhiro$$jORCID:0000-0001-6453-179X$$uKyushu U. 002891203 700__ $$aHarano, Hideki$$jORCID:0000-0002-8804-4184$$uAIST, Tsukuba 002891203 700__ $$aFroeschl, Robert$$jORCID:0000-0002-2194-5869$$uCERN 002891203 700__ $$aIliopoulou, Elpida$$jORCID:0000-0003-0895-9227$$uCERN 002891203 700__ $$aInfantino, Angelo$$jORCID:0000-0002-7854-3502$$uCERN 002891203 700__ $$aRoesler, Stefan$$jORCID:0000-0002-5920-0459$$uCERN 002891203 700__ $$aBrugger, Markus$$jORCID:0000-0002-3645-7091$$uCERN 002891203 773__ $$c98-110$$n1$$pJ. Nucl. Sci. Tech.$$v61$$y2024 002891203 960__ $$a13 002891203 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=es">Buscar</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=es">Enviar</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=es">Personalizar</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=es">Ayuda</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> <br /> Powered by <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Mantenido por <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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