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>Achievements and Performance Prospects of the Upgraded LHC Injectors - 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/2845730" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2845730?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2845730?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2845730?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2845730?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2845730?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2845730?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2845730?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2845730?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2845730?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2845730?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2845730?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2845730?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2845730?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2845730?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2845730?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2845730?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2845730?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2845730?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2845730?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="To provide HL-LHC performance, the CERN LHC injector chain underwent a major upgrade during an almost 2-year-long shutdown. In the first half of 2021 the injectors were gradually re-started with the aim to reach at least pre-shutdown parameters for LHC as well as for fixed target beams. The strategy of the commissioning across the complex, a summary of the many challenges and finally the achievements will be presented. Several lessons were learned and have been integrated to define the strategy for the performance ramp-up over the coming years. Remaining limitations and prospects for LHC beam parameters at the exit of the LHC injector chain in the years to come will be discussed. Finally, the emerging need for improved operability of the CERN complex will be addressed, with a description of the first efforts to meet the availability and flexibility requirements of the HL-LHC era while at the same time maximizing fixed target physics output. Kain, Verena; Albright, Simon; Alemany-Fernández, Reyes; Angoletta, Maria Elena; Antoniou, Fanouria; Argyropoulos, Theodoros; Asvesta, Foteini; Balhan, Bruno; Barnes, Michael; Barrientos, Diego; Bartosik, Hannes; Baudrenghien, Philippe; Bellodi, Giulia; Biancacci, Nicolo; Boccardi, Andrea; Borburgh, Jan; Bracco, Chiara; Carlier, Etienne; Cotte, Denis; Coupard, Julie; Damerau, Heiko; Di Giovanni, Gian Piero; Findlay, Alan; Fraser, Matthew; Funken, Anne; Goddard, Brennan; Hagmann, Gregoire; Hanke, Klaus; Huschauer, Alexander; Jaussi, Michael; Karpov, Ivan; Koevener, Toke; Küchler, Detlef; Lallement, Jean-Baptiste; Lasheen, Alexandre; Levens, Thomas; Li, Kevin; Lombardi, Alessandra; Madysa, Nico; Mahner, Edgar; Meddahi, Malika; Mether, Lotta; Mikulec, Bettina; Molendijk, John; Montesinos, Eric; Nisbet, David; Nuiry, Francois-Xavier; Papotti, Giulia; Paraschou, Konstantinos; Pedrosa, Fernando; Prebibaj, Tirsi; Prodon, Sylvie; Quartullo, Danilo; Renner, Elisabeth; Roncarolo, Federico; Rumolo, Giovanni; Salvant, Benoit; Schenk, Michael; Scrivens, Richard; Shaposhnikova, Elena; Skowroński, Piotr; Spierer, Arthur; Tecker, Frank; Valuch, Daniel; Velotti, Francesco; Wegner, Rolf; Zannini, Carlo" /> <meta name="keywords" content="MMI, injection, brightness, proton, kicker" /> <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="Achievements and Performance Prospects of the Upgraded LHC Injectors" name="citation_title" /> <meta content="Kain, Verena" name="citation_author" /> <meta content="Albright, Simon" name="citation_author" /> <meta content="Barrientos, Diego" name="citation_author" /> <meta content="Coupard, Julie" name="citation_author" /> <meta content="Meddahi, Malika" name="citation_author" /> <meta content="Baudrenghien, Philippe" name="citation_author" /> <meta content="Madysa, Nico" name="citation_author" /> <meta content="Asvesta, Foteini" name="citation_author" /> <meta content="Prodon, Sylvie" name="citation_author" /> <meta content="Schenk, Michael" name="citation_author" /> <meta content="Huschauer, Alexander" name="citation_author" /> <meta content="Lallement, Jean-Baptiste" name="citation_author" /> <meta content="Mikulec, Bettina" name="citation_author" /> <meta content="Scrivens, Richard" name="citation_author" /> <meta content="Angoletta, Maria Elena" name="citation_author" /> <meta content="Carlier, Etienne" name="citation_author" /> <meta content="Hanke, Klaus" name="citation_author" /> <meta content="Lasheen, Alexandre" name="citation_author" /> <meta content="Spierer, Arthur" name="citation_author" /> <meta content="Antoniou, Fanouria" name="citation_author" /> <meta content="Salvant, Benoit" name="citation_author" /> <meta content="Argyropoulos, Theodoros" name="citation_author" /> <meta content="Borburgh, Jan" name="citation_author" /> <meta content="Quartullo, Danilo" name="citation_author" /> <meta content="Bracco, Chiara" name="citation_author" /> <meta content="Prebibaj, Tirsi" name="citation_author" /> <meta content="Rumolo, Giovanni" name="citation_author" /> <meta content="Nuiry, Francois-Xavier" name="citation_author" /> <meta content="Biancacci, Nicolo" name="citation_author" /> <meta content="Di Giovanni, Gian Piero" name="citation_author" /> <meta content="Mether, Lotta" name="citation_author" /> <meta content="Bartosik, Hannes" name="citation_author" /> <meta content="Levens, Thomas" name="citation_author" /> <meta content="Koevener, Toke" name="citation_author" /> <meta content="Papotti, Giulia" name="citation_author" /> <meta content="Mahner, Edgar" name="citation_author" /> <meta content="Molendijk, John" name="citation_author" /> <meta content="Zannini, Carlo" name="citation_author" /> <meta content="Alemany-Fernández, Reyes" name="citation_author" /> <meta content="Fraser, Matthew" name="citation_author" /> <meta content="Pedrosa, Fernando" name="citation_author" /> <meta content="Damerau, Heiko" name="citation_author" /> <meta content="Bellodi, Giulia" name="citation_author" /> <meta content="Balhan, Bruno" name="citation_author" /> <meta content="Valuch, Daniel" name="citation_author" /> <meta content="Nisbet, David" name="citation_author" /> <meta content="Findlay, Alan" name="citation_author" /> <meta content="Li, Kevin" name="citation_author" /> <meta content="Jaussi, Michael" name="citation_author" /> <meta content="Roncarolo, Federico" name="citation_author" /> <meta content="Karpov, Ivan" name="citation_author" /> <meta content="Tecker, Frank" name="citation_author" /> <meta content="Montesinos, Eric" name="citation_author" /> <meta content="Wegner, Rolf" name="citation_author" /> <meta content="Cotte, Denis" name="citation_author" /> <meta content="Shaposhnikova, Elena" name="citation_author" /> <meta content="Küchler, Detlef" name="citation_author" /> <meta content="Funken, Anne" name="citation_author" /> <meta content="Boccardi, Andrea" name="citation_author" /> <meta content="Goddard, Brennan" name="citation_author" /> <meta content="Paraschou, Konstantinos" name="citation_author" /> <meta content="Skowroński, Piotr" name="citation_author" /> <meta content="Renner, Elisabeth" name="citation_author" /> <meta content="Velotti, Francesco" name="citation_author" /> <meta content="Lombardi, Alessandra" name="citation_author" /> <meta content="Barnes, Michael" name="citation_author" /> <meta content="Hagmann, Gregoire" name="citation_author" /> <meta content="10.18429/JACoW-IPAC2022-WEIYGD1" name="citation_doi" /> <meta content="JACoW IPAC" name="citation_journal_title" /> <meta content="2022" name="citation_volume" /> <meta content="1610-1615" name="citation_firstpage" /> <meta content="2022" name="citation_publication_date" /> <meta name="citation_online_date" content="2023/01/11"> <meta content="10.18429/JACoW-IPAC2022-WEIYGD1" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2845730/files/document.pdf" />  <meta content="Achievements and Performance Prospects of the Upgraded LHC Injectors" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2845730" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="To provide HL-LHC performance, the CERN LHC injector chain underwent a major upgrade during an almost 2-year-long shutdown. In the first half of 2021 the injectors were gradually re-started with the aim to reach at least pre-shutdown parameters for LHC as well as for fixed target beams. The strategy of the commissioning across the complex, a summary of the many challenges and finally the achievements will be presented. Several lessons were learned and have been integrated to define the strategy for the performance ramp-up over the coming years. Remaining limitations and prospects for LHC beam parameters at the exit of the LHC injector chain in the years to come will be discussed. Finally, the emerging need for improved operability of the CERN complex will be addressed, with a description of the first efforts to meet the availability and flexibility requirements of the HL-LHC era while at the same time maximizing fixed target physics output." 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/2845730" 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> > Achievements and Performance Prospects of the Upgraded LHC Injectors </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/2845730/?ln=en">Information </a></li><li class=""><a href="/record/2845730/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="2845730"></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"> Title </td><td style="padding-left:5px;"><b>Achievements and Performance Prospects of the Upgraded LHC Injectors</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 67 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=Kain%2C%20Verena&ln=en">Kain, Verena</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Albright%2C%20Simon&ln=en">Albright, Simon</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Alemany-Fern%C3%A1ndez%2C%20Reyes&ln=en">Alemany-Fernández, Reyes</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Angoletta%2C%20Maria%20Elena&ln=en">Angoletta, Maria Elena</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Antoniou%2C%20Fanouria&ln=en">Antoniou, Fanouria</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Argyropoulos%2C%20Theodoros&ln=en">Argyropoulos, Theodoros</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Asvesta%2C%20Foteini&ln=en">Asvesta, Foteini</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Balhan%2C%20Bruno&ln=en">Balhan, Bruno</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Barnes%2C%20Michael&ln=en">Barnes, Michael</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Barrientos%2C%20Diego&ln=en">Barrientos, Diego</a> (CERN)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Bartosik%2C%20Hannes&ln=en">Bartosik, Hannes</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Baudrenghien%2C%20Philippe&ln=en">Baudrenghien, Philippe</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bellodi%2C%20Giulia&ln=en">Bellodi, Giulia</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Biancacci%2C%20Nicolo&ln=en">Biancacci, Nicolo</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Boccardi%2C%20Andrea&ln=en">Boccardi, Andrea</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Borburgh%2C%20Jan&ln=en">Borburgh, Jan</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bracco%2C%20Chiara&ln=en">Bracco, Chiara</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Carlier%2C%20Etienne&ln=en">Carlier, Etienne</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Cotte%2C%20Denis&ln=en">Cotte, Denis</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Coupard%2C%20Julie&ln=en">Coupard, Julie</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Damerau%2C%20Heiko&ln=en">Damerau, Heiko</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Di%20Giovanni%2C%20Gian%20Piero&ln=en">Di Giovanni, Gian Piero</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Findlay%2C%20Alan&ln=en">Findlay, Alan</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Fraser%2C%20Matthew&ln=en">Fraser, Matthew</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Funken%2C%20Anne&ln=en">Funken, Anne</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Goddard%2C%20Brennan&ln=en">Goddard, Brennan</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Hagmann%2C%20Gregoire&ln=en">Hagmann, Gregoire</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Hanke%2C%20Klaus&ln=en">Hanke, Klaus</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Huschauer%2C%20Alexander&ln=en">Huschauer, Alexander</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Jaussi%2C%20Michael&ln=en">Jaussi, Michael</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Karpov%2C%20Ivan&ln=en">Karpov, Ivan</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Koevener%2C%20Toke&ln=en">Koevener, Toke</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=K%C3%BCchler%2C%20Detlef&ln=en">Küchler, Detlef</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Lallement%2C%20Jean-Baptiste&ln=en">Lallement, Jean-Baptiste</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Lasheen%2C%20Alexandre&ln=en">Lasheen, Alexandre</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Levens%2C%20Thomas&ln=en">Levens, Thomas</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Li%2C%20Kevin&ln=en">Li, Kevin</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Lombardi%2C%20Alessandra&ln=en">Lombardi, Alessandra</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Madysa%2C%20Nico&ln=en">Madysa, Nico</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Mahner%2C%20Edgar&ln=en">Mahner, Edgar</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Meddahi%2C%20Malika&ln=en">Meddahi, Malika</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Mether%2C%20Lotta&ln=en">Mether, Lotta</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Mikulec%2C%20Bettina&ln=en">Mikulec, Bettina</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Molendijk%2C%20John&ln=en">Molendijk, John</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Montesinos%2C%20Eric&ln=en">Montesinos, Eric</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Nisbet%2C%20David&ln=en">Nisbet, David</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Nuiry%2C%20Francois-Xavier&ln=en">Nuiry, Francois-Xavier</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Papotti%2C%20Giulia&ln=en">Papotti, Giulia</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Paraschou%2C%20Konstantinos&ln=en">Paraschou, Konstantinos</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Pedrosa%2C%20Fernando&ln=en">Pedrosa, Fernando</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Prebibaj%2C%20Tirsi&ln=en">Prebibaj, Tirsi</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Prodon%2C%20Sylvie&ln=en">Prodon, Sylvie</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Quartullo%2C%20Danilo&ln=en">Quartullo, Danilo</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Renner%2C%20Elisabeth&ln=en">Renner, Elisabeth</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Roncarolo%2C%20Federico&ln=en">Roncarolo, Federico</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Rumolo%2C%20Giovanni&ln=en">Rumolo, Giovanni</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Salvant%2C%20Benoit&ln=en">Salvant, Benoit</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Schenk%2C%20Michael&ln=en">Schenk, Michael</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Scrivens%2C%20Richard&ln=en">Scrivens, Richard</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Shaposhnikova%2C%20Elena&ln=en">Shaposhnikova, Elena</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Skowro%C5%84ski%2C%20Piotr&ln=en">Skowroński, Piotr</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Spierer%2C%20Arthur&ln=en">Spierer, Arthur</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Tecker%2C%20Frank&ln=en">Tecker, Frank</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Valuch%2C%20Daniel&ln=en">Valuch, Daniel</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Velotti%2C%20Francesco&ln=en">Velotti, Francesco</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Wegner%2C%20Rolf&ln=en">Wegner, Rolf</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Zannini%2C%20Carlo&ln=en">Zannini, Carlo</a> (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;">2022</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">6</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.18429/JACoW-IPAC2022-WEIYGD1"><i>JACoW IPAC</i> 2022 (2022) 1610-1615</a> </a></td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2806400">13th International Particle Accelerator Conference (IPAC 2022)</a>, Bangkok, Thailand, 12 - 17 Jun 2022, pp.1610-1615</td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.18429/JACoW-IPAC2022-WEIYGD1" title="DOI" target="_blank">10.18429/JACoW-IPAC2022-WEIYGD1</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Project </td><td style="padding-left:5px;"><a href='https://cds.cern.ch/search?p=693__p:"CERN HL-LHC"'>CERN HL-LHC</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">To provide HL-LHC performance, the CERN LHC injector chain underwent a major upgrade during an almost 2-year-long shutdown. In the first half of 2021 the injectors were gradually re-started with the aim to reach at least pre-shutdown parameters for LHC as well as for fixed target beams. The strategy of the commissioning across the complex, a summary of the many challenges and finally the achievements will be presented. Several lessons were learned and have been integrated to define the strategy for the performance ramp-up over the coming years. Remaining limitations and prospects for LHC beam parameters at the exit of the LHC injector chain in the years to come will be discussed. Finally, the emerging need for improved operability of the CERN complex will be addressed, with a description of the first efforts to meet the availability and flexibility requirements of the HL-LHC era while at the same time maximizing fixed target physics output.</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/2137133">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 2023-01-11, last modified 2023-06-07</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%3A2845730&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">Fulltext:</small> <br /><a href="/record/2845730/files/document.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=2845730">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2845730/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2845730/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2845730/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2845730/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2845730/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2845730/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2845730/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:2845730/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2845730', addEmail: true, title: "Achievements and Performance Prospects of the Upgraded LHC Injectors", description: "To provide HL-LHC performance, the CERN LHC injector chain underwent a major upgrade during an almost 2-year-long shutdown. In the first half of 2021 the injectors were gradually re-started with the aim to reach at least pre-shutdown parameters for LHC as well as for fixed target beams. The strategy of the commissioning across the complex, a summary of the many challenges and finally the achievements will be presented. Several lessons were learned and have been integrated to define the strategy for the performance ramp-up over the coming years. Remaining limitations and prospects for LHC beam parameters at the exit of the LHC injector chain in the years to come will be discussed. Finally, the emerging need for improved operability of the CERN complex will be addressed, with a description of the first efforts to meet the availability and flexibility requirements of the HL-LHC era while at the same time maximizing fixed target physics output." }); // ]]> </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/2845730?ln=bg" class="langinfo">Български</a>  <a href="/record/2845730?ln=ca" class="langinfo">Català</a>  <a href="/record/2845730?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2845730?ln=el" class="langinfo">Ελληνικά</a>  <span class="langinfo">English</span>  <a href="/record/2845730?ln=es" class="langinfo">Español</a>  <a href="/record/2845730?ln=fr" class="langinfo">Français</a>  <a href="/record/2845730?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2845730?ln=it" class="langinfo">Italiano</a>  <a href="/record/2845730?ln=ja" class="langinfo">日本語</a>  <a href="/record/2845730?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2845730?ln=no" class="langinfo">Norsk/Bokmål</a>  <a href="/record/2845730?ln=pl" class="langinfo">Polski</a>  <a href="/record/2845730?ln=pt" class="langinfo">Português</a>  <a href="/record/2845730?ln=ru" class="langinfo">Русский</a>  <a href="/record/2845730?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2845730?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2845730?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2845730?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>