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="es" xml:lang="es" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Mechanical Strain Measurements Based on Fiber Bragg Grating Down to Cryogenic Temperature - R&D; Study and 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/2672619" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2672619?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2672619?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2672619?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2672619?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2672619?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2672619?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2672619?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2672619?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2672619?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2672619?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2672619?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2672619?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2672619?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2672619?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2672619?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2672619?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2672619?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2672619?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2672619?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=es" /> <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="es" /> <meta name="description" content="In recent years, optical fiber sensors have been increasingly used due to their outstanding performances. Their application is preferable in case of special requirements that exclude the application of conventional electrical sensors. The scientific background of optical fiber sensors is well developed. However, the characteristic of sensors employed in rather harsh environments is often different from the one determined in laboratory conditions or prior to their installation. In order to achieve long-term stable functioning and reliable measurement under severe working environments, such as those occurring at CERN (radiation, cryogenics, high magnetic and electrical field), a statistical measurement campaign was carried out following the international standard ISO 5725. The paper describes the ongoing study to define the accuracy of optical fiber sensors based on Fiber Bragg Grating (FBG) for strain measurements, from room temperature down to 4.2 K. It also describes some of the demanding applications for which optical fiber sensors have been deployed to perform experimental strain measurements (e.g. detectors components, high-energy beam targets and dumps, superconducting magnets). Guinchard, Michael; Bertarelli, Alessandro; Bianchi, Laura; Boyer, Francois; Cabon, Morgane; Calviani, Marco; Capatina, Ofelia; Catinaccio, Andrea; Ferracin, Paolo; Grosclaude, Philippe" /> <meta name="keywords" content="radiation, cryogenics, superconducting-magnet, GUI, experiment" /> <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="JACoW : Mechanical Strain Measurements Based on Fiber Bragg Grating Down to Cryogenic Temperature - R&D; Study and Applications" name="citation_title" /> <meta content="Guinchard, Michael" name="citation_author" /> <meta content="Bertarelli, Alessandro" name="citation_author" /> <meta content="Catinaccio, Andrea" name="citation_author" /> <meta content="Bianchi, Laura" name="citation_author" /> <meta content="Capatina, Ofelia" name="citation_author" /> <meta content="Ferracin, Paolo" name="citation_author" /> <meta content="Boyer, Francois" name="citation_author" /> <meta content="Calviani, Marco" name="citation_author" /> <meta content="Grosclaude, Philippe" name="citation_author" /> <meta content="Cabon, Morgane" name="citation_author" /> <meta content="10.18429/JACoW-IPAC2018-WEPMF081" name="citation_doi" /> <meta content="WEPMF081" name="citation_firstpage" /> <meta content="2018" name="citation_publication_date" /> <meta name="citation_online_date" content="2019/04/26"> <meta content="10.18429/JACoW-IPAC2018-WEPMF081" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2672619/files/wepmf081.pdf" />  <meta content="Mechanical Strain Measurements Based on Fiber Bragg Grating Down to Cryogenic Temperature - R&D; Study and Applications" 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/2672619" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="JACoW" property="og:description" /> <meta content="In recent years, optical fiber sensors have been increasingly used due to their outstanding performances. Their application is preferable in case of special requirements that exclude the application of conventional electrical sensors. The scientific background of optical fiber sensors is well developed. However, the characteristic of sensors employed in rather harsh environments is often different from the one determined in laboratory conditions or prior to their installation. In order to achieve long-term stable functioning and reliable measurement under severe working environments, such as those occurring at CERN (radiation, cryogenics, high magnetic and electrical field), a statistical measurement campaign was carried out following the international standard ISO 5725. The paper describes the ongoing study to define the accuracy of optical fiber sensors based on Fiber Bragg Grating (FBG) for strain measurements, from room temperature down to 4.2 K. It also describes some of the demanding applications for which optical fiber sensors have been deployed to perform experimental strain measurements (e.g. detectors components, high-energy beam targets and dumps, superconducting magnets)." property="og:description" />  <meta content="summary" name="twitter:card" /> <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/2672619%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> > Mechanical Strain Measurements Based on Fiber Bragg Grating Down to Cryogenic Temperature - R&D; Study and 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/2672619/?ln=es">Información: </a></li><li class=""><a href="/record/2672619/files?ln=es">Ficheros </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="2672619"></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>Mechanical Strain Measurements Based on Fiber Bragg Grating Down to Cryogenic Temperature - R&D; Study and Applications</b></td></tr> <tr><td class="formatRecordLabel"><span style="white-space:nowrap;"> Author(s) </span> </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?f=author&p=Guinchard%2C%20Michael&ln=es">Guinchard, Michael</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bertarelli%2C%20Alessandro&ln=es">Bertarelli, Alessandro</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bianchi%2C%20Laura&ln=es">Bianchi, Laura</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Boyer%2C%20Francois&ln=es">Boyer, Francois</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Cabon%2C%20Morgane&ln=es">Cabon, Morgane</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Calviani%2C%20Marco&ln=es">Calviani, Marco</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Capatina%2C%20Ofelia&ln=es">Capatina, Ofelia</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Catinaccio%2C%20Andrea&ln=es">Catinaccio, Andrea</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Ferracin%2C%20Paolo&ln=es">Ferracin, Paolo</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Grosclaude%2C%20Philippe&ln=es">Grosclaude, Philippe</a> (CERN ; Unlisted, CH)</td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2018</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">3</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2317451">9th International Particle Accelerator Conference</a>, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF081</td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.18429/JACoW-IPAC2018-WEPMF081" title="DOI" target="_blank">10.18429/JACoW-IPAC2018-WEPMF081</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">In recent years, optical fiber sensors have been increasingly used due to their outstanding performances. Their application is preferable in case of special requirements that exclude the application of conventional electrical sensors. The scientific background of optical fiber sensors is well developed. However, the characteristic of sensors employed in rather harsh environments is often different from the one determined in laboratory conditions or prior to their installation. In order to achieve long-term stable functioning and reliable measurement under severe working environments, such as those occurring at CERN (radiation, cryogenics, high magnetic and electrical field), a statistical measurement campaign was carried out following the international standard ISO 5725. The paper describes the ongoing study to define the accuracy of optical fiber sensors based on Fiber Bragg Grating (FBG) for strain measurements, from room temperature down to 4.2 K. It also describes some of the demanding applications for which optical fiber sensors have been deployed to perform experimental strain measurements (e.g. detectors components, high-energy beam targets and dumps, superconducting magnets).</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;"><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/1690163">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">Volver a la búsqueda</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Registro creado el 2019-04-26, última modificación el 2019-04-27</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=es&p=recid%3A2672619&rm=wrd" class="moreinfo">Registros similares</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">Texto completo:</small> <br /><a href="/record/2672619/files/wepmf081.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Descargar el texto completo" /><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=es&recid=2672619">Añadir a la cesta personal</a></li> <li>Exportar como <a style="text-decoration:underline;font-weight:normal" href="/record/2672619/export/hx?ln=es">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2672619/export/hm?ln=es">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2672619/export/xm?ln=es">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2672619/export/xd?ln=es">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2672619/export/xe?ln=es">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2672619/export/xn?ln=es">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2672619/export/xw?ln=es">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:2672619/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2672619', addEmail: true, title: "Mechanical Strain Measurements Based on Fiber Bragg Grating Down to Cryogenic Temperature - R&D; Study and Applications", description: "In recent years, optical fiber sensors have been increasingly used due to their outstanding performances. Their application is preferable in case of special requirements that exclude the application of conventional electrical sensors. The scientific background of optical fiber sensors is well developed. However, the characteristic of sensors employed in rather harsh environments is often different from the one determined in laboratory conditions or prior to their installation. In order to achieve long-term stable functioning and reliable measurement under severe working environments, such as those occurring at CERN (radiation, cryogenics, high magnetic and electrical field), a statistical measurement campaign was carried out following the international standard ISO 5725. The paper describes the ongoing study to define the accuracy of optical fiber sensors based on Fiber Bragg Grating (FBG) for strain measurements, from room temperature down to 4.2 K. It also describes some of the demanding applications for which optical fiber sensors have been deployed to perform experimental strain measurements (e.g. detectors components, high-energy beam targets and dumps, superconducting magnets)." }); // ]]> </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=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> :: <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 /> Mantenido por <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"> Este sitio también está disponible en los siguientes idiomas:<br /><a href="/record/2672619?ln=bg" class="langinfo">Български</a>  <a href="/record/2672619?ln=ca" class="langinfo">Català</a>  <a href="/record/2672619?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2672619?ln=el" class="langinfo">Ελληνικά</a>  <a href="/record/2672619?ln=en" class="langinfo">English</a>  <span class="langinfo">Español</span>  <a href="/record/2672619?ln=fr" class="langinfo">Français</a>  <a href="/record/2672619?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2672619?ln=it" class="langinfo">Italiano</a>  <a href="/record/2672619?ln=ja" class="langinfo">日本語</a>  <a href="/record/2672619?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2672619?ln=no" class="langinfo">Norsk/Bokmål</a>  <a href="/record/2672619?ln=pl" class="langinfo">Polski</a>  <a href="/record/2672619?ln=pt" class="langinfo">Português</a>  <a href="/record/2672619?ln=ru" class="langinfo">Русский</a>  <a href="/record/2672619?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2672619?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2672619?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2672619?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>