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="en" xml:lang="en" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Operation Experience with the LHC ACS RF System - 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/2712616/export/hm" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2712616/export/hm?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2712616/export/hm?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2712616/export/hm?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2712616/export/hm?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2712616/export/hm?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2712616/export/hm?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2712616/export/hm?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2712616/export/hm?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2712616/export/hm?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2712616/export/hm?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2712616/export/hm?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2712616/export/hm?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2712616/export/hm?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2712616/export/hm?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2712616/export/hm?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2712616/export/hm?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2712616/export/hm?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2712616/export/hm?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2712616/export/hm?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=en" /> <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="en" /> <meta name="description" content="The LHC accelerating RF system consists of two cryomodules per beam, each containing four single-cell niobium sputtered 400.8 MHz superconducting cavities working at 4.5 K and an average accelerating voltage of 2 MV. The paper summarises the experience, availability and evolution of the system within 10 years of operation. The lessons learned from the successful replacement and re-commissioning of one cryomodule with a spare module, and the recent re-test of the originally installed module on the test stand are also included. Finally, a review of currently launched spare cavity production and long-term developments are presented. Turaj, Katarzyna; Arnaudon, Luca; Baudrenghien, Philippe; Brunner, Olivier; Butterworth, Andrew; Gerigk, Frank; Karppinen, Mikko; Maesen, Pierre; Montesinos, Eric; Peauger, Franck; Rosaz, Guillaume; Shaposhnikova, Elena; Smekens, David; Taborelli, Mauro; Therasse, Mathieu; Timko, Helga; Valuch, Daniel; Valverde Alonso, Nuria; Venturini Delsolaro, Walter" /> <meta name="keywords" content="cavity, cryomodule, operation, injection, MMI" /> <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="JACoW : Operation Experience with the LHC ACS RF System" name="citation_title" /> <meta content="Turaj, Katarzyna" name="citation_author" /> <meta content="Montesinos, Eric" name="citation_author" /> <meta content="Smekens, David" name="citation_author" /> <meta content="Therasse, Mathieu" name="citation_author" /> <meta content="Taborelli, Mauro" name="citation_author" /> <meta content="Karppinen, Mikko" name="citation_author" /> <meta content="Venturini Delsolaro, Walter" name="citation_author" /> <meta content="Brunner, Olivier" name="citation_author" /> <meta content="Baudrenghien, Philippe" name="citation_author" /> <meta content="Rosaz, Guillaume" name="citation_author" /> <meta content="Shaposhnikova, Elena" name="citation_author" /> <meta content="Butterworth, Andrew" name="citation_author" /> <meta content="Timko, Helga" name="citation_author" /> <meta content="Valuch, Daniel" name="citation_author" /> <meta content="Arnaudon, Luca" name="citation_author" /> <meta content="Peauger, Franck" name="citation_author" /> <meta content="Valverde Alonso, Nuria" name="citation_author" /> <meta content="Gerigk, Frank" name="citation_author" /> <meta content="Maesen, Pierre" name="citation_author" /> <meta content="10.18429/JACoW-SRF2019-THP031" name="citation_doi" /> <meta content="913-916" name="citation_firstpage" /> <meta content="2019" name="citation_publication_date" /> <meta name="citation_online_date" content="2020/03/10"> <meta content="SRF2019" name="citation_technical_report_number" /> <meta content="10.18429/JACoW-SRF2019-THP031" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2712616/files/10.18429_JACoW-SRF2019-THP031.pdf" />  <meta content="Operation Experience with the LHC ACS RF System" property="og:title" /> <meta content="JACoW" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2712616" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="The LHC accelerating RF system consists of two cryomodules per beam, each containing four single-cell niobium sputtered 400.8 MHz superconducting cavities working at 4.5 K and an average accelerating voltage of 2 MV. The paper summarises the experience, availability and evolution of the system within 10 years of operation. The lessons learned from the successful replacement and re-commissioning of one cryomodule with a spare module, and the recent re-test of the originally installed module on the test stand are also included. Finally, a review of currently launched spare cavity production and long-term developments are presented." property="og:description" /> <meta content="JACoW" property="og:description" />  <meta content="summary" name="twitter:card" /> <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/2712616/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/2712616">Operation Experience with the LHC ACS RF System</a> > HTML MARC </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <pre style="margin: 1em 0px;">002712616 001__ 2712616 002712616 003__ SzGeCERN 002712616 005__ 20200310212646.0 002712616 0247_ $$2DOI$$9JACoW$$a10.18429/JACoW-SRF2019-THP031 002712616 0248_ $$aoai:inspirehep.net:1780592$$pcerncds:CERN:FULLTEXT$$pcerncds:FULLTEXT$$pcerncds:CERN$$qINSPIRE:HEP$$qForCDS 002712616 035__ $$9http://inspirehep.net/oai2d$$aoai:inspirehep.net:1780592$$d2020-03-09T14:15:59Z$$h2020-03-10T08:00:54Z$$mmarcxml 002712616 035__ $$9Inspire$$a1780592 002712616 041__ $$aeng 002712616 088__ $$aSRF2019 002712616 100__ $$aTuraj, Katarzyna$$jJACoW-00094998$$mkatarzyna.turaj@cern.ch$$uCERN 002712616 245__ $$9JACoW$$aOperation Experience with the LHC ACS RF System 002712616 260__ $$c2019 002712616 300__ $$a4 p 002712616 520__ $$9JACoW$$aThe LHC accelerating RF system consists of two cryomodules per beam, each containing four single-cell niobium sputtered 400.8 MHz superconducting cavities working at 4.5 K and an average accelerating voltage of 2 MV. The paper summarises the experience, availability and evolution of the system within 10 years of operation. The lessons learned from the successful replacement and re-commissioning of one cryomodule with a spare module, and the recent re-test of the originally installed module on the test stand are also included. Finally, a review of currently launched spare cavity production and long-term developments are presented. 002712616 540__ $$aCC-BY-3.0$$bJACoW$$uhttp://creativecommons.org/licenses/by/3.0/ 002712616 542__ $$3Publication$$fAny distribution of this work must maintain attribution to the author(s), title of the work, publisher, and DOI.$$g2019 002712616 65017 $$2SzGeCERN$$aAccelerators and Storage Rings 002712616 6531_ $$2JACoW$$acavity 002712616 6531_ $$2JACoW$$acryomodule 002712616 6531_ $$2JACoW$$aoperation 002712616 6531_ $$2JACoW$$ainjection 002712616 6531_ $$2JACoW$$aMMI 002712616 690C_ $$aCERN 002712616 693__ $$aCERN LHC 002712616 700__ $$aArnaudon, Luca$$jJACoW-00006922$$mluca.arnaudon@cern.ch$$uCERN 002712616 700__ $$aBaudrenghien, Philippe$$jJACoW-00001644$$mphilippe.baudrenghien@cern.ch$$uCERN 002712616 700__ $$aBrunner, Olivier$$jJACoW-00046019$$molivier.brunner@cern.ch$$uCERN 002712616 700__ $$aButterworth, Andrew$$jJACoW-00001682$$mandrew.butterworth@cern.ch$$uCERN 002712616 700__ $$aGerigk, Frank$$iINSPIRE-00406170$$jJACoW-00003184$$kORCID:0000-0001-8158-7920$$uCERN 002712616 700__ $$aKarppinen, Mikko$$jJACoW-00001725$$kORCID:0000-0002-7336-031X$$memail:mikko.karppinen@cern.ch$$uCERN 002712616 700__ $$aMaesen, Pierre$$jJACoW-00007023$$mpierre.maesen@cern.ch$$uCERN 002712616 700__ $$aMontesinos, Eric$$jJACoW-00019509$$meric.montesinos@cern.ch$$uCERN 002712616 700__ $$aPeauger, Franck$$jJACoW-00025309$$mfranck.peauger@cea.fr$$uCERN 002712616 700__ $$aRosaz, Guillaume$$jJACoW-00074653$$kORCID:0000-0001-5987-128X$$memail:guillaume.rosaz@cern.ch$$uCERN 002712616 700__ $$aShaposhnikova, Elena$$iINSPIRE-00186954$$jJACoW-00001642$$uCERN 002712616 700__ $$aSmekens, David$$jJACoW-00055386$$mdavid.smekens@cern.ch$$uCERN 002712616 700__ $$aTaborelli, Mauro$$iINSPIRE-00342580$$jJACoW-00003742$$uCERN 002712616 700__ $$aTherasse, Mathieu$$jJACoW-00046578$$mmathieu.therasse@cern.ch$$uCERN 002712616 700__ $$aTimko, Helga$$jJACoW-00046591$$mhelga.timko@cern.ch$$uCERN 002712616 700__ $$aValuch, Daniel$$jJACoW-00004360$$mdaniel.valuch@cern.ch$$uCERN 002712616 700__ $$aValverde Alonso, Nuria$$jJACoW-00051982$$mnuria.valverde@cern.ch$$uCERN 002712616 700__ $$aVenturini Delsolaro, Walter$$jJACoW-00003806$$mwalter.venturini@cern.ch$$uCERN 002712616 773__ $$c913-916$$qSRF2019$$wC19-06-30.1$$y2019 002712616 8564_ $$81603662$$s18910453$$uhttps://cds.cern.ch/record/2712616/files/10.18429_JACoW-SRF2019-THP031.pdf$$yFulltext 002712616 960__ $$a13 002712616 962__ $$b2710755$$k913-916$$ndresden20190630 002712616 980__ $$aARTICLE 002712616 980__ $$aConferencePaper 002712616 999C5 $$9refextract$$hE. Ciapala et al.$$min Proc. EPAC’08, Genoa, Italy, Jun., paper MOPP124, pp. 847-849$$o1$$tCommissioning of the 400 MHz LHC RF System$$y2008 002712616 999C5 $$9refextract$$adoi:10.1103/PhysRevSTAB.14.029901$$hT. Mastorides, C. Rivetta, J.D. Fox, D. Van Winkle, and P. Baudrenghien$$mTHP031 915$$o2$$sPhys.Rev.ST Accel.Beams,14,029901$$tRF system models for the CERN Large Hadron Collider with application to longitudinal dynamics$$y2011 002712616 999C5 $$9refextract$$adoi:10.1103/PhysRevAccelBeams.20.101003$$hT. Mastorides, P. Baudrenghien, J. Molendijk$$mPhys. Rev. Accel. Beams, vol. 20, p. 101003$$o3$$tCavity voltage phase modulation to reduce the high-luminosity Large Hadron Collider rf power requirements$$y2017 002712616 999C5 $$9refextract$$hT. Mastorides, P. Baudrenghien, O. Brunner, E. Shaposhnikova$$min Proc. 4th Evian workshop, Evian, France$$o4$$tLHC RF: 2012 Performance and preparation for LS 1 Operation$$y2012 002712616 999C5 $$9refextract$$hK. Turaj et al.$$min Proc. 9th Evian workshop, Evian, France$$o5$$tRF System availability and performance during Run II$$y2019 002712616 999C5 $$9refextract$$hP. Baudrenghien et al.$$min Proc. 5th Evian workshop, Evian, France,. THP031 916$$o6$$tStatus and commissioning plans for LHC Run 2. The RF System$$y2014 002712616 999C5 $$9refextract$$hK. Turaj, F. Peauger$$mCERN internal note to be published$$o7$$tHigh power RF tests results of the spare LHC cryomodule in SM18$$y2019 002712616 999C5 $$9refextract$$adoi:10.1109/TASC.2018.2792528$$hF. Gerigk$$min$$o8$$sIEEE Trans.Appl.Supercond.,28,3500205$$tSuperconducting RF at CERN: operation, projects, and R$$y2018 002712616 999C5 $$9refextract$$hH. Timko et al.$$min Proc. 9th Evian workshop, Evian, France$$o9$$tLHC Longitudinal beam dynamics during during Run II$$y2019 002712616 999C5 $$9refextract$$hH. Timko, E. Shaposhnikova, K. Turaj$$m’Estimated LHC RF system performance reach at injection during Run III and beyond’, CERN, Geneva, Switzerland, Rep$$mFacilities - Progress operational experiences$$o10$$rCERN-ACC-NOTE-2019-0005$$y2019</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? 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"> This site is also available in the following languages:<br /><a href="/record/2712616/export/hm?ln=bg" class="langinfo">Български</a>  <a href="/record/2712616/export/hm?ln=ca" class="langinfo">Català</a>  <a href="/record/2712616/export/hm?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2712616/export/hm?ln=el" class="langinfo">Ελληνικά</a>  <span class="langinfo">English</span>  <a href="/record/2712616/export/hm?ln=es" class="langinfo">Español</a>  <a href="/record/2712616/export/hm?ln=fr" class="langinfo">Français</a>  <a href="/record/2712616/export/hm?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2712616/export/hm?ln=it" class="langinfo">Italiano</a>  <a href="/record/2712616/export/hm?ln=ja" class="langinfo">日本語</a>  <a href="/record/2712616/export/hm?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2712616/export/hm?ln=no" class="langinfo">Norsk/Bokmål</a>  <a href="/record/2712616/export/hm?ln=pl" class="langinfo">Polski</a>  <a href="/record/2712616/export/hm?ln=pt" class="langinfo">Português</a>  <a href="/record/2712616/export/hm?ln=ru" class="langinfo">Русский</a>  <a href="/record/2712616/export/hm?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2712616/export/hm?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2712616/export/hm?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2712616/export/hm?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>