Impedance and thermal studies of the CERN SPS wire scanners and mitigation of wire heating

<!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="bg" xml:lang="bg" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Impedance and thermal studies of the CERN SPS wire scanners and mitigation of wire heating - 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/2912932/export/hx" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2912932/export/hx?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2912932/export/hx?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2912932/export/hx?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2912932/export/hx?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2912932/export/hx?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2912932/export/hx?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2912932/export/hx?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2912932/export/hx?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2912932/export/hx?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2912932/export/hx?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2912932/export/hx?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2912932/export/hx?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2912932/export/hx?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2912932/export/hx?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2912932/export/hx?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2912932/export/hx?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2912932/export/hx?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2912932/export/hx?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2912932/export/hx?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=bg" /> <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="bg" /> <meta name="description" content="All wires of the four CERN SPS rotational wirescanners broke when increasing the beam intensity towards the target for the LHC Injector Upgrade in 2023. Impedance and thermal studies were immediately launched, with simulations and measurements indicating that beam induced heating from resonant modes on the thin wire could be sufficient to cause these breakages. Mitigation measures to displace electromagnetic losses away from the wire were proposed and implemented. This allowed a much higher beam intensity to be reached, close to the LIU target. Simulations now predict that the modified wirescanners can sustain the LIU beam parameters. de la Fuente, Elena; Papazoglou, I; Sito, Leonardo; Andreazza, William; Antuono, Chiara; Bruchon, N; Calaga, Rama; Carra, Federico; Emery, J; Harrison, Anthony; Karpov, Ivan; Li, K; Papotti, Giulia; Roncarolo, Federico; Rumolo, Giovanni; Salvant, Benoit; Sullivan, M; Veness, Raymond; Vanel, A; Vollinger, Christine; Zannini, Carlo" /> <meta name="keywords" content="impedance, bunching, timing, coupling, simulation" /> <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 : Impedance and thermal studies of the CERN SPS wire scanners and mitigation of wire heating" name="citation_title" /> <meta content="de la Fuente, Elena" name="citation_author" /> <meta content="Vollinger, Christine" name="citation_author" /> <meta content="Sito, Leonardo" name="citation_author" /> <meta content="Salvant, Benoit" name="citation_author" /> <meta content="Vanel, A" name="citation_author" /> <meta content="Papotti, Giulia" name="citation_author" /> <meta content="Papazoglou, I" name="citation_author" /> <meta content="Bruchon, N" name="citation_author" /> <meta content="Sullivan, M" name="citation_author" /> <meta content="Veness, Raymond" name="citation_author" /> <meta content="Li, K" name="citation_author" /> <meta content="Harrison, Anthony" name="citation_author" /> <meta content="Karpov, Ivan" name="citation_author" /> <meta content="Roncarolo, Federico" name="citation_author" /> <meta content="Carra, Federico" name="citation_author" /> <meta content="Emery, J" name="citation_author" /> <meta content="Calaga, Rama" name="citation_author" /> <meta content="Rumolo, Giovanni" name="citation_author" /> <meta content="Andreazza, William" name="citation_author" /> <meta content="Zannini, Carlo" name="citation_author" /> <meta content="Antuono, Chiara" name="citation_author" /> <meta content="10.18429/JACoW-IPAC2024-WEPG29" name="citation_doi" /> <meta content="JACoW IPAC" name="citation_journal_title" /> <meta content="2024" name="citation_volume" /> <meta content="WEPG29" name="citation_firstpage" /> <meta content="2024" name="citation_publication_date" /> <meta name="citation_online_date" content="2024/10/09"> <meta content="10.18429/JACoW-IPAC2024-WEPG29" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2912932/files/document.pdf" />  <meta content="JACOW" property="og:title" /> <meta content="Impedance and thermal studies of the CERN SPS wire scanners and mitigation of wire heating" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2912932" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="JACOW" property="og:description" /> <meta content="All wires of the four CERN SPS rotational wirescanners broke when increasing the beam intensity towards the target for the LHC Injector Upgrade in 2023. Impedance and thermal studies were immediately launched, with simulations and measurements indicating that beam induced heating from resonant modes on the thin wire could be sufficient to cause these breakages. Mitigation measures to displace electromagnetic losses away from the wire were proposed and implemented. This allowed a much higher beam intensity to be reached, close to the LIU target. Simulations now predict that the modified wirescanners can sustain the LIU beam parameters." property="og:description" />  <meta content="summary" name="twitter:card" /> <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="bg">  <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=bg&referer=https%3A//cds.cern.ch/record/2912932/export/hx%3Fln%3Dbg" 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=bg">Търсене</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=bg">Изпращане</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=bg">Помощ</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=bg">Персонализиране</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=bg">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=bg">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=bg">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=bg">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=bg" class="navtrail">Начало</a> > <a class="navtrail" href="/record/2912932">Impedance and thermal studies of the CERN SPS wire scanners and mitigation of wire heating</a> > BibTeX </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <pre> @article{delaFuente:2912932, author = "de la Fuente, Elena and Papazoglou, I and Sito, Leonardo and Andreazza, William and Antuono, Chiara and Bruchon, N and Calaga, Rama and Carra, Federico and Emery, J and Harrison, Anthony and Karpov, Ivan and Li, K and Papotti, Giulia and Roncarolo, Federico and Rumolo, Giovanni and Salvant, Benoit and Sullivan, M and Veness, Raymond and Vanel, A and Vollinger, Christine and Zannini, Carlo", title = "{Impedance and thermal studies of the CERN SPS wire scanners and mitigation of wire heating}", journal = "JACoW IPAC", volume = "2024", pages = "WEPG29", year = "2024", url = "https://cds.cern.ch/record/2912932", doi = "10.18429/JACoW-IPAC2024-WEPG29", } </pre></div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=bg">Търсене</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=bg">Изпращане</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=bg">Персонализиране</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=bg">Помощ</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 /> Поддръжка от <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"> Този сайт е достъпен на следните езици:<br /><span class="langinfo">Български</span>  <a href="/record/2912932/export/hx?ln=ca" class="langinfo">Català</a>  <a href="/record/2912932/export/hx?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2912932/export/hx?ln=el" class="langinfo">Ελληνικά</a>  <a href="/record/2912932/export/hx?ln=en" class="langinfo">English</a>  <a href="/record/2912932/export/hx?ln=es" class="langinfo">Español</a>  <a href="/record/2912932/export/hx?ln=fr" class="langinfo">Français</a>  <a href="/record/2912932/export/hx?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2912932/export/hx?ln=it" class="langinfo">Italiano</a>  <a href="/record/2912932/export/hx?ln=ja" class="langinfo">日本語</a>  <a href="/record/2912932/export/hx?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2912932/export/hx?ln=no" class="langinfo">Norsk/Bokmål</a>  <a href="/record/2912932/export/hx?ln=pl" class="langinfo">Polski</a>  <a href="/record/2912932/export/hx?ln=pt" class="langinfo">Português</a>  <a href="/record/2912932/export/hx?ln=ru" class="langinfo">Русский</a>  <a href="/record/2912932/export/hx?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2912932/export/hx?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2912932/export/hx?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2912932/export/hx?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>

CINXE.COM

Impedance and thermal studies of the CERN SPS wire scanners and mitigation of wire heating - CERN Document Server