High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility

<!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>High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility - 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/2135830" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2135830?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2135830?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2135830?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2135830?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2135830?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2135830?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2135830?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2135830?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2135830?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2135830?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2135830?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2135830?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2135830?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2135830?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2135830?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2135830?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2135830?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2135830?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2135830?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 correct functioning of a collimation system is crucial to safely operate highly energetic particle accelerators, such as the Large Hadron Collider (LHC). The requirements to handle high intensity beams can be demanding. In this respect, investigating the consequences of LHC particle beams hitting tertiary collimators (TCTs) in the experimental regions is a fundamental issue for machine protection. An experimental test was designed to investigate the robustness and effects of beam accidents on a fully assembled collimator, based on accident scenarios in the LHC. This experiment, carried out at the CERN High-Radiation to Materials (HiRadMat) facility, involved 440 GeV proton beam impacts of different intensities on the jaws of a horizontal TCT. This paper presents the experimental setup and the preliminary results obtained, together with some first outcomes from visual inspection and a comparison of such results with numerical simulations. Cauchi, Marija; Aberle, O; Assmann, R W; Bertarelli, A; Carra, F; Cornelis, K; Dallocchio, A; Deboy, D; Lari, L; Redaelli, S; Rossi, A; Salvachua, B; Mollicone, P; Sammut, N" /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <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="High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility" name="citation_title" /> <meta content="Cauchi, Marija" name="citation_author" /> <meta content="Redaelli, S" name="citation_author" /> <meta content="Aberle, O" name="citation_author" /> <meta content="Cornelis, K" name="citation_author" /> <meta content="Sammut, N" name="citation_author" /> <meta content="Deboy, D" name="citation_author" /> <meta content="Salvachua, B" name="citation_author" /> <meta content="Lari, L" name="citation_author" /> <meta content="Rossi, A" name="citation_author" /> <meta content="Dallocchio, A" name="citation_author" /> <meta content="Carra, F" name="citation_author" /> <meta content="Assmann, R W" name="citation_author" /> <meta content="Mollicone, P" name="citation_author" /> <meta content="Bertarelli, A" name="citation_author" /> <meta content="10.1103/PhysRevSTAB.17.021004" name="citation_doi" /> <meta content="Phys. Rev. Spec. Top. Accel. Beams" name="citation_journal_title" /> <meta content="17" name="citation_volume" /> <meta content="021004" name="citation_firstpage" /> <meta content="2014" name="citation_publication_date" /> <meta name="citation_online_date" content="2016/03/02"> <meta content="10.1103/PhysRevSTAB.17.021004" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2135830/files/10.1103_PhysRevSTAB.17.021004.pdf" />  <meta content="High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility" property="og:title" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2135830" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="APS" property="og:description" /> <meta content="The correct functioning of a collimation system is crucial to safely operate highly energetic particle accelerators, such as the Large Hadron Collider (LHC). The requirements to handle high intensity beams can be demanding. In this respect, investigating the consequences of LHC particle beams hitting tertiary collimators (TCTs) in the experimental regions is a fundamental issue for machine protection. An experimental test was designed to investigate the robustness and effects of beam accidents on a fully assembled collimator, based on accident scenarios in the LHC. This experiment, carried out at the CERN High-Radiation to Materials (HiRadMat) facility, involved 440 GeV proton beam impacts of different intensities on the jaws of a horizontal TCT. This paper presents the experimental setup and the preliminary results obtained, together with some first outcomes from visual inspection and a comparison of such results with numerical simulations." 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/2135830%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> > High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility </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/2135830/?ln=en">Information </a></li><li class=""><a href="/record/2135830/files?ln=en">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="2135830"></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">  <a style="color:#fff;text-decoration:none" href="https://cds.cern.ch/collection/Published%20Articles">Published Articles</a> </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"> Title </td><td style="padding-left:5px;"><b>High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility</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 = "Hide" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Show all 14 authors" } 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=Cauchi%2C%20Marija&ln=en">Cauchi, Marija</a> (CERN ; Malta U.) ; <a href="https://cds.cern.ch/search?f=author&p=Aberle%2C%20O&ln=en">Aberle, O</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Assmann%2C%20R%20W&ln=en">Assmann, R W</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bertarelli%2C%20A&ln=en">Bertarelli, A</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Carra%2C%20F&ln=en">Carra, F</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Cornelis%2C%20K&ln=en">Cornelis, K</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Dallocchio%2C%20A&ln=en">Dallocchio, A</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Deboy%2C%20D&ln=en">Deboy, D</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Lari%2C%20L&ln=en">Lari, L</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Redaelli%2C%20S&ln=en">Redaelli, S</a> (CERN)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Rossi%2C%20A&ln=en">Rossi, A</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Salvachua%2C%20B&ln=en">Salvachua, B</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Mollicone%2C%20P&ln=en">Mollicone, P</a> (Malta U.) ; <a href="https://cds.cern.ch/search?f=author&p=Sammut%2C%20N&ln=en">Sammut, N</a> (Malta U.)</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;">2014</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">14</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1103/PhysRevSTAB.17.021004"><i>Phys. Rev. Spec. Top. Accel. Beams</i> 17 (2014) 021004</a> </a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1103/PhysRevSTAB.17.021004" title="DOI" target="_blank">10.1103/PhysRevSTAB.17.021004</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">High-Energy Accelerators and Colliders ; Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">The correct functioning of a collimation system is crucial to safely operate highly energetic particle accelerators, such as the Large Hadron Collider (LHC). The requirements to handle high intensity beams can be demanding. In this respect, investigating the consequences of LHC particle beams hitting tertiary collimators (TCTs) in the experimental regions is a fundamental issue for machine protection. An experimental test was designed to investigate the robustness and effects of beam accidents on a fully assembled collimator, based on accident scenarios in the LHC. This experiment, carried out at the CERN High-Radiation to Materials (HiRadMat) facility, involved 440 GeV proton beam impacts of different intensities on the jaws of a horizontal TCT. This paper presents the experimental setup and the preliminary results obtained, together with some first outcomes from visual inspection and a comparison of such results with numerical simulations.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">publication: © 2014-2024 The Author(s) (License: <a href="http://creativecommons.org/licenses/by/3.0/">CC-BY-3.0</a>)</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/1317544">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"> Record created 2016-03-02, last modified 2022-08-10</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=en&p=recid%3A2135830&rm=wrd" class="moreinfo">Similar records</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">APS Open Access article:</small> <br /><a href="/record/2135830/files/10.1103_PhysRevSTAB.17.021004.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Download fulltext" /><br />PDF</a><br /></div> </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=en&recid=2135830">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2135830/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2135830/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2135830/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2135830/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2135830/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2135830/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2135830/export/xw?ln=en">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/cds:2135830/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2135830', addEmail: true, title: "High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility", description: "The correct functioning of a collimation system is crucial to safely operate highly energetic particle accelerators, such as the Large Hadron Collider (LHC). The requirements to handle high intensity beams can be demanding. In this respect, investigating the consequences of LHC particle beams hitting tertiary collimators (TCTs) in the experimental regions is a fundamental issue for machine protection. An experimental test was designed to investigate the robustness and effects of beam accidents on a fully assembled collimator, based on accident scenarios in the LHC. This experiment, carried out at the CERN High-Radiation to Materials (HiRadMat) facility, involved 440\u00a0GeV proton beam impacts of different intensities on the jaws of a horizontal TCT. This paper presents the experimental setup and the preliminary results obtained, together with some first outcomes from visual inspection and a comparison of such results with numerical simulations." }); // ]]> </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=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> <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/2135830?ln=bg" class="langinfo">Български</a>  <a href="/record/2135830?ln=ca" class="langinfo">Català</a>  <a href="/record/2135830?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2135830?ln=el" class="langinfo">Ελληνικά</a>  <span class="langinfo">English</span>  <a href="/record/2135830?ln=es" class="langinfo">Español</a>  <a href="/record/2135830?ln=fr" class="langinfo">Français</a>  <a href="/record/2135830?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2135830?ln=it" class="langinfo">Italiano</a>  <a href="/record/2135830?ln=ja" class="langinfo">日本語</a>  <a href="/record/2135830?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2135830?ln=no" class="langinfo">Norsk/Bokmål</a>  <a href="/record/2135830?ln=pl" class="langinfo">Polski</a>  <a href="/record/2135830?ln=pt" class="langinfo">Português</a>  <a href="/record/2135830?ln=ru" class="langinfo">Русский</a>  <a href="/record/2135830?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2135830?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2135830?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2135830?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

High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility - CERN Document Server