CINXE.COM

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">     <html xmlns="http://www.w3.org/1999/xhtml" lang="pl" xml:lang="pl" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Medium-Grain Niobium SRF Cavity Production Technology for Science Frontiers and Accelerator Applications - CERN Document Server</title> <link href='https://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTSansWeb.css' rel='stylesheet' type='text/css' /> <link rel="stylesheet" href="https://cds.cern.ch/img/invenio.css?v=20141127" type="text/css" /> <link rel="stylesheet" href="https://cds.cern.ch/img/cern_theme/css/cern_theme.css?v=20141127" type="text/css" /> <link rel="stylesheet"href="/css/font-awesome.min.css"> <meta http-equiv="X-UA-Compatible" content="IE=Edge"/> <link rel="stylesheet" href="https://cds.cern.ch/img/cern_toolbar/css/toolbar.css" type="text/css" />    <link rel="canonical" href="https://cds.cern.ch/record/2805598" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2805598?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2805598?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2805598?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2805598?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2805598?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2805598?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2805598?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2805598?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2805598?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2805598?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2805598?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2805598?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2805598?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2805598?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2805598?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2805598?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2805598?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2805598?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2805598?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=pl" /> <link rel="search" type="application/opensearchdescription+xml" href="https://cds.cern.ch/opensearchdescription" title="CERN Document Server" /> <link rel="unapi-server" type="application/xml" title="unAPI" href="https://cds.cern.ch/unapi" /> <link rel="apple-touch-icon" href="/apple-touch-icon.png"/> <link rel="apple-touch-icon-precomposed" href="/apple-touch-icon-precomposed.png"/> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Language" content="pl" /> <meta name="description" content="We present the cost-effective production of superconductingradio frequency (SRF) cavities made of medium grain (MG) niobium(Nb) discs directly sliced from forged and annealed billet. Thisproduction method provides clean surface conditions and reliablemechanical characteristics with sub-millimeter average grain sizeresulting in stable SRF cavity production. We propose to apply thismaterial to particle accelerator in the science and industrialapplications. The science applications require high fieldgradients(≥ 30 MV/m) particularly in pulsed mode. Theindustrial applications require high Q$_{0}$ values with moderategradients (∼ 20 MV/m) in CW mode operation. This paperdescribes the MG Nb disc production recently demonstrated anddiscusses future prospects for application in advanced particleaccelerators in the science and industrial applications. We propose cost-effective production of medium grain (MG) niobium (Nb) discs directly sliced from forged and annealed billet. This production method provides clean surface conditions and reliable mechanical characteristics with sub-millimeter average grain size resulting in stable SRF cavity production. We propose to apply this material to particle accelerator applications in the science and industrial frontiers. The science applications require high field gradients (>~40 MV/m) particularly in pulse mode. The industrial applications require high Q0 values with moderate gradients (~30 MV/m) in CW mode operation. This report describes the MG Nb disc production recently demonstrated and discusses future prospects for application in advanced particle accelerators in the science and industrial frontiers. Myneni, G.; Hani E. Elsayed-Ali; Islam, Md Obidul; Sayeed, Md Nizam; Ciovati, G.; Dhakal, P.; Rimmer, R.A.; Carl, M.; Fajardo, A.; Lannoy, N.; Khanal, B.D.; Dohmae, T.; Kumar, A.; Saeki, T.; Umemori, K.; Yamanaka, M.; Michizono, S.; Yamamoto, A." /> <meta name="keywords" content="Acceleration cavities and superconducting magnets (high-temperature superconductor, radiation hardened magnets, normal-conducting, permanent magnet devices, wigglers and undulators), Accelerator Applications" /> <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"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); </script> <script src="/MathJax/MathJax.js?config=TeX-AMS_CHTML" type="text/javascript"> </script>  <meta content="IOP : Medium grain niobium SRF cavity production technology for science frontiers and accelerator applications" name="citation_title" /> <meta content="arXiv : Medium-Grain Niobium SRF Cavity Production Technology for Science Frontiers and Accelerator Applications" name="citation_title" /> <meta content="Myneni, G." name="citation_author" /> <meta content="Saeki, T." name="citation_author" /> <meta content="Kumar, A." name="citation_author" /> <meta content="Yamamoto, A." name="citation_author" /> <meta content="Michizono, S." name="citation_author" /> <meta content="Fajardo, A." name="citation_author" /> <meta content="Islam, Md Obidul" name="citation_author" /> <meta content="Khanal, B.D." name="citation_author" /> <meta content="Hani E. Elsayed-Ali" name="citation_author" /> <meta content="Ciovati, G." name="citation_author" /> <meta content="Carl, M." name="citation_author" /> <meta content="Dhakal, P." name="citation_author" /> <meta content="Yamanaka, M." name="citation_author" /> <meta content="Sayeed, Md Nizam" name="citation_author" /> <meta content="Dohmae, T." name="citation_author" /> <meta content="Rimmer, R.A." name="citation_author" /> <meta content="Umemori, K." name="citation_author" /> <meta content="Lannoy, N." name="citation_author" /> <meta content="10.1088/1748-0221/18/04/T04005" name="citation_doi" /> <meta content="JINST" name="citation_journal_title" /> <meta content="18" name="citation_volume" /> <meta content="T04005" name="citation_firstpage" /> <meta content="2022/03/11" name="citation_publication_date" /> <meta name="citation_online_date" content="2022/04/01"> <meta content="arXiv:2203.07371" name="citation_technical_report_number" /> <meta content="10.1088/1748-0221/18/04/T04005" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2805598/files/2203.07371.pdf" />  <meta content="arXiv" property="og:title" /> <meta content="Medium grain niobium SRF cavity production technology for science frontiers and accelerator applications" property="og:title" /> <meta content="Medium-Grain Niobium SRF Cavity Production Technology for Science Frontiers and Accelerator Applications" property="og:title" /> <meta content="IOP" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2805598" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="arXiv" property="og:description" /> <meta content="We propose cost-effective production of medium grain (MG) niobium (Nb) discs directly sliced from forged and annealed billet. This production method provides clean surface conditions and reliable mechanical characteristics with sub-millimeter average grain size resulting in stable SRF cavity production. We propose to apply this material to particle accelerator applications in the science and industrial frontiers. The science applications require high field gradients (&gt;~40 MV/m) particularly in pulse mode. The industrial applications require high Q0 values with moderate gradients (~30 MV/m) in CW mode operation. This report describes the MG Nb disc production recently demonstrated and discusses future prospects for application in advanced particle accelerators in the science and industrial frontiers." property="og:description" /> <meta content="We present the cost-effective production of superconductingradio frequency (SRF) cavities made of medium grain (MG) niobium(Nb) discs directly sliced from forged and annealed billet. Thisproduction method provides clean surface conditions and reliablemechanical characteristics with sub-millimeter average grain sizeresulting in stable SRF cavity production. We propose to apply thismaterial to particle accelerator in the science and industrialapplications. The science applications require high fieldgradients(≥ 30 MV/m) particularly in pulsed mode. Theindustrial applications require high Q$_{0}$ values with moderategradients (∼ 20 MV/m) in CW mode operation. This paperdescribes the MG Nb disc production recently demonstrated anddiscusses future prospects for application in advanced particleaccelerators in the science and industrial applications." property="og:description" /> <meta content="IOP" property="og:description" />  <meta content="summary" name="twitter:card" /> <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="pl">  <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=pl&referer=https%3A//cds.cern.ch/record/2805598%3Fln%3Dpl" 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=pl">Szukaj</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=pl">Dodaj</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=pl">Pomoc</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=pl">Ustawienia</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=pl">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=pl">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=pl">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=pl">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=pl" class="navtrail">Główna</a> > Medium-Grain Niobium SRF Cavity Production Technology for Science Frontiers and Accelerator Applications </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <div class="detailedrecordbox"> <div class="detailedrecordtabs"> <div> <ul class="detailedrecordtabs"><li class="on first"><a href="/record/2805598/?ln=pl">Informacja </a></li><li class=""><a href="/record/2805598/files?ln=pl">Files </a></li></ul> <div id="tabsSpacer" style="clear:both;height:0px"> </div></div> </div> <div class="detailedrecordboxcontent"> <div class="top-left-folded"></div> <div class="top-right-folded"></div> <div class="inside">  <abbr class="unapi-id" title="2805598"></abbr> <style type="text/css">  </style> <table class="formatRecordTableFullWidth" > <tr> <td class="formatRecordHeader" style="background-image: url('https://cds.cern.ch/img/journals.jpg');" colspan="2">  Article </td> </tr> <script type="text/javascript"> $( document ).ready(function() { $('.showAuthor').on('click', function() { var author = '<p>' + $(this).data('name') + '</p>'; var affiliation = $(this).data('affiliation') + '</br>'; var contribution = $(this).data('contribution') + '</br>'; $.magnificPopup.open({ items: { src: '<div id="ovelary-mathjax" class="overlay-white oc-content overlay-white-500">' + author + affiliation + contribution + '</div>', type: 'inline' }, callbacks: { open: function() { var div = document.getElementById("overlay-mathjax") MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]); }, } }) }) }); </script> <tr><td class="formatRecordLabel"> Report number </td><td style="padding-left:5px;"><a href="http://arxiv.org/abs/arXiv:2203.07371">arXiv:2203.07371</a></td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Medium-Grain Niobium SRF Cavity Production Technology for Science Frontiers and Accelerator Applications Medium grain niobium SRF cavity production technology for science frontiers and accelerator applications</b></td></tr> <tr><td class="formatRecordLabel"><span style="white-space:nowrap;"> Author(s) </span> </td><td style="padding-left:5px;"> <script type="text/javascript"> function toggle_authors_visibility(){ var more = document.getElementById('more'); var link = document.getElementById('link'); var extension = document.getElementById('extension'); if (more.style.display=='none'){ more.style.display = ''; extension.style.display = 'none'; link.innerHTML = "Ukryj" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Pokaż wszystkich 18 autorów" } link.style.color = "rgb(204,0,0);" } function set_up(){ var extension = document.getElementById('extension'); extension.innerHTML = ""; toggle_authors_visibility(); } </script> <a name="show_hide" /><a href="https://cds.cern.ch/search?f=author&p=Myneni%2C%20G.&ln=pl">Myneni, G.</a> (Old Dominion U. ; Unlisted, US ; Old Dominion U. (main) ; Jefferson Lab) ; <a href="https://cds.cern.ch/search?f=author&p=Hani%20E.%20Elsayed-Ali&ln=pl">Hani E. Elsayed-Ali</a> (Old Dominion U. ; Old Dominion U. (main)) ; <a href="https://cds.cern.ch/search?f=author&p=Islam%2C%20Md%20Obidul&ln=pl">Islam, Md Obidul</a> (Old Dominion U. ; Old Dominion U. (main)) ; <a href="https://cds.cern.ch/search?f=author&p=Sayeed%2C%20Md%20Nizam&ln=pl">Sayeed, Md Nizam</a> (Old Dominion U. ; Old Dominion U. (main)) ; <a href="https://cds.cern.ch/search?f=author&p=Ciovati%2C%20G.&ln=pl">Ciovati, G.</a> (Jefferson Lab ; Old Dominion U.) ; <a href="https://cds.cern.ch/search?f=author&p=Dhakal%2C%20P.&ln=pl">Dhakal, P.</a> (Jefferson Lab) ; <a href="https://cds.cern.ch/search?f=author&p=Rimmer%2C%20R.A.&ln=pl">Rimmer, R.A.</a> (Jefferson Lab) ; <a href="https://cds.cern.ch/search?f=author&p=Carl%2C%20M.&ln=pl">Carl, M.</a> (Unlisted, US) ; <a href="https://cds.cern.ch/search?f=author&p=Fajardo%2C%20A.&ln=pl">Fajardo, A.</a> (Unlisted, US) ; <a href="https://cds.cern.ch/search?f=author&p=Lannoy%2C%20N.&ln=pl">Lannoy, N.</a> (Unlisted, US)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Khanal%2C%20B.D.&ln=pl">Khanal, B.D.</a> (Old Dominion U.) ; <a href="https://cds.cern.ch/search?f=author&p=Dohmae%2C%20T.&ln=pl">Dohmae, T.</a> (KEK, Tsukuba) ; <a href="https://cds.cern.ch/search?f=author&p=Kumar%2C%20A.&ln=pl">Kumar, A.</a> (KEK, Tsukuba) ; <a href="https://cds.cern.ch/search?f=author&p=Saeki%2C%20T.&ln=pl">Saeki, T.</a> (KEK, Tsukuba) ; <a href="https://cds.cern.ch/search?f=author&p=Umemori%2C%20K.&ln=pl">Umemori, K.</a> (KEK, Tsukuba) ; <a href="https://cds.cern.ch/search?f=author&p=Yamanaka%2C%20M.&ln=pl">Yamanaka, M.</a> (KEK, Tsukuba) ; <a href="https://cds.cern.ch/search?f=author&p=Michizono%2C%20S.&ln=pl">Michizono, S.</a> (KEK, Tsukuba) ; <a href="https://cds.cern.ch/search?f=author&p=Yamamoto%2C%20A.&ln=pl">Yamamoto, A.</a> (KEK, Tsukuba ; CERN)</span> <span id="extension"></span> <small><i><a id="link" href="#" onclick="toggle_authors_visibility()" style="color:rgb(204,0,0);"></a></i></small><script type="text/javascript">set_up()</script></td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2023-04-21</td></tr> <tr><td class="formatRecordLabel"> Imprint </td><td style="padding-left:5px;">2022-03-11</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">14</td></tr> <tr><td class="formatRecordLabel"> Note </td><td style="padding-left:5px;">Contribution to Snowmass 2021</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1088/1748-0221/18/04/T04005"><i>JINST</i> 18 (2023) T04005</a> </a></td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2722743">2021 Snowmass Summer Study</a>, Seattle, WA, United States, 11 - 20 July 2021, pp.T04005</td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1088/1748-0221/18/04/T04005" title="DOI" target="_blank">10.1088/1748-0221/18/04/T04005</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings ; Detectors and Experimental Techniques</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">We propose cost-effective production of medium grain (MG) niobium (Nb) discs directly sliced from forged and annealed billet. This production method provides clean surface conditions and reliable mechanical characteristics with sub-millimeter average grain size resulting in stable SRF cavity production. We propose to apply this material to particle accelerator applications in the science and industrial frontiers. The science applications require high field gradients (> 40 MV/m) particularly in pulse mode. The industrial applications require high Q0 values with moderate gradients ( 30 MV/m) in CW mode operation. This report describes the MG Nb disc production recently demonstrated and discusses future prospects for application in advanced particle accelerators in the science and industrial frontiers.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">preprint: (License: <a href="http://arxiv.org/licenses/nonexclusive-distrib/1.0/">arXiv nonexclusive-distrib 1.0</a>)<br/>publication: © 2023-2024 IOP Publishing Ltd and Sissa Medialab</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2653913">Inspire</a> <small> </small> <br/> <br/><br/><div align="right"><div style="padding-bottom:2px;padding-top:30px;"><span class="moreinfo" style="margin-right:10px;"> <a href="" class="moreinfo">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Rekord stworzony 2022-04-01, ostatnia modyfikacja 2023-11-02</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"><a href="/search?ln=pl&p=recid%3A2805598&rm=wrd" class="moreinfo">Podobne rekordy</a></span></div> </div> </div> </div> <br/> <br /> <div class="detailedrecordminipanel"> <div class="top-left"></div><div class="top-right"></div> <div class="inside"> <div id="detailedrecordminipanelfile" style="width:33%;float:left;text-align:center;margin-top:0"> <div><small class="detailedRecordActions">Pełny tekst:</small> <br /><a href="/record/2805598/files/2203.07371.pdf"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Pobierz pełny tekst"/>PDF</a><br /></div><small class="detailedRecordActions">Link zewnętrzny:</small><br /><small><a href="https://www.slac.stanford.edu/econf/C210711/"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Pobierz pełny tekst"/>eConf</a></small> </div> <div id="detailedrecordminipanelreview" style="width:30%;float:left;text-align:center"> </div> <div id="detailedrecordminipanelactions" style="width:36%;float:right;text-align:right;"> <ul class="detailedrecordactions"> <li><a href="/yourbaskets/add?ln=pl&recid=2805598">Dodaj do koszyka osobistego</a></li> <li>Wyeksportuj jako <a style="text-decoration:underline;font-weight:normal" href="/record/2805598/export/hx?ln=pl">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2805598/export/hm?ln=pl">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2805598/export/xm?ln=pl">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2805598/export/xd?ln=pl">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2805598/export/xe?ln=pl">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2805598/export/xn?ln=pl">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2805598/export/xw?ln=pl">RefWorks</a> </li> </ul> <div style='padding-left: 13px;'>  <div id="bookmark"></div> <div id="bookmark_sciencewise"></div> <style type="text/css"> #bookmark_sciencewise, #bookmark {float: left;} #bookmark_sciencewise li {padding: 2px; width: 25px;} #bookmark_sciencewise ul, #bookmark ul {list-style-image: none;} </style> <script type="text/javascript" src="/js/jquery.bookmark.min.js"></script> <style type="text/css">@import "/css/jquery.bookmark.css";</style> <script type="text/javascript">// <![CDATA[ $.bookmark.addSite('sciencewise', 'ScienceWise.info', 'https://cds.cern.ch/img/sciencewise.png', 'en', 'bookmark', 'http://sciencewise.info/bookmarks/2203.0737/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2805598', addEmail: true, title: "Medium-Grain Niobium SRF Cavity Production Technology for Science Frontiers and Accelerator Applications", description: "We present the cost-effective production of superconductingradio frequency (SRF) cavities made of medium grain (MG) niobium(Nb) discs directly sliced from forged and annealed billet. Thisproduction method provides clean surface conditions and reliablemechanical characteristics with sub-millimeter average grain sizeresulting in stable SRF cavity production. We propose to apply thismaterial to particle accelerator in the science and industrialapplications. The science applications require high fieldgradients(\u2265 30 MV/m) particularly in pulsed mode. Theindustrial applications require high Q$_{0}$ values with moderategradients (\u223c 20 MV/m) in CW mode operation. This paperdescribes the MG\u00a0Nb disc production recently demonstrated anddiscusses future prospects for application in advanced particleaccelerators in the science and industrial applications." }); // ]]> </script>  </div> </div> <div style="clear:both;margin-bottom: 0;"></div> </div> <div class="bottom-left"></div><div class="bottom-right"></div> </div> </div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=pl">Szukaj</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=pl">Dodaj</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=pl">Ustawienia</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=pl">Pomoc</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> <br /> System <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Administrator <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? Contact <a href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Support</a>. <br /> </div> <div class="pagefooterstriperight"> <div class="cern-logo"> <a id="logo" href="http://cern.ch" title="CERN" rel="CERN" ><img src="https://cds.cern.ch/img/cern_theme/img/cern-logo-large.png" alt="CERN" /></a> </div> <div class="cern-languagebox"> Ta strona jest również dostępna w następujących językach:<br /><a href="/record/2805598?ln=bg" class="langinfo">Български</a>  <a href="/record/2805598?ln=ca" class="langinfo">Català</a>  <a href="/record/2805598?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2805598?ln=el" class="langinfo">Ελληνικά</a>  <a href="/record/2805598?ln=en" class="langinfo">English</a>  <a href="/record/2805598?ln=es" class="langinfo">Español</a>  <a href="/record/2805598?ln=fr" class="langinfo">Français</a>  <a href="/record/2805598?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2805598?ln=it" class="langinfo">Italiano</a>  <a href="/record/2805598?ln=ja" class="langinfo">日本語</a>  <a href="/record/2805598?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2805598?ln=no" class="langinfo">Norsk/Bokmål</a>  <span class="langinfo">Polski</span>  <a href="/record/2805598?ln=pt" class="langinfo">Português</a>  <a href="/record/2805598?ln=ru" class="langinfo">Русский</a>  <a href="/record/2805598?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2805598?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2805598?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2805598?ln=zh_TW" class="langinfo">中文(繁)</a> </div> </div>  </footer> <script type="text/javascript"> var SyndeticsBookCovers = (function() { var SMALL_SIZE = "sc.gif", MEDIUM_SIZE = "mc.gif", RAW_URL = "https://secure.syndetics.com/index.aspx?isbn=THEISBN/THESIZE&client=cernlibrary"; replaceCover = function(imgElement, isbns, hdFormat) { var img = new Image(), size = hdFormat ? MEDIUM_SIZE : SMALL_SIZE; var _isbns = isbns.sort(function(a, b) { // sort from shortest to longest ISBN (more modern) return a.length > b.length ? 1 : -1; }); function next() { var isbn = _isbns.pop(); if (isbn) { var url = RAW_URL.replace("THEISBN", isbn).replace("THESIZE", size); img.src = url; } } function done() { imgElement.src = img.src; } img.onload = function() { if (this.width > 1) { done(); } else { next(); } }; next(); }; return { replaceCover: replaceCover }; })(); $(document).ready(function() { // get book covers $("img.book-cover").each(function() { var $this = $(this), strIsbns = $this.data("isbns") || "", isbnsArray = String(strIsbns).split(","), hdFormat = $this.hasClass("hd"); SyndeticsBookCovers.replaceCover(this, isbnsArray, hdFormat); }); // WebNews tooltips $.ajax({ url: "/news/tooltips", success: function(data) { create_tooltips(data); }, dataType: "json", cache: false }); }); </script>  <script src="//cds.cern.ch/js/feedback.js"></script>   <script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function() { var u="https://webanalytics.web.cern.ch/"; _paq.push(['setTrackerUrl', u+'matomo.php']); _paq.push(['setSiteId', '756']); var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0]; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s); })(); </script>  </body> </html>