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<!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="de" xml:lang="de" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Improvements to the SPS Slow Extraction for High Intensity Operation - 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/2668989/export/hx" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2668989/export/hx?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2668989/export/hx?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2668989/export/hx?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2668989/export/hx?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2668989/export/hx?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2668989/export/hx?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2668989/export/hx?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2668989/export/hx?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2668989/export/hx?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2668989/export/hx?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2668989/export/hx?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2668989/export/hx?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2668989/export/hx?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2668989/export/hx?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2668989/export/hx?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2668989/export/hx?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2668989/export/hx?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2668989/export/hx?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2668989/export/hx?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=de" /> <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="de" /> <meta name="description" content="Slow extraction using the third-integer resonance and thin electrostatic septa as used in the SPS to serve the North Area is a process with inherent beam loss. For high-ﬂux 400 GeV protons, the beam losses result in high machine activation, reduced component lifetime and severe limitations on personnel access and maintenance. The instantaneous and integrated loss levels are strong limitations on the annual attainable POT for present operation and for the much higher ﬂuxes requested by SHiP at the proposed BDF facility. In this report the present constraints and potential improvements to the slow extraction system in the SPS are described along with the recent theoretical studies and practical implementation of prospective operational improvements. Machine results of testing of new extraction loss reduction techniques and hardware are presented in the context of SHiP POT requests, SPS BDF and the PBC project and the potential extraction loss reduction factor is evaluated with an outlook to future high intensity operation. The prospects of deployment on the present operational beams and the resulting improvement factors are discussed. Balhan, Bruno; Bestmann, Patrick; Bjorkman, Daniel; Borburgh, Jan; Butcher, Mark; Calviani, Marco; Di Castro, Mario; Donze, Mathieu; Esposito, Luigi Salvatore; Fraser, Matthew Alexander; Galluccio, Francesca; Gavrikov, Yury; Gilardoni, Simone; Goddard, Brennan; Jorat, Louise Olivia; Harrison, Anthony; Hirlander, Simon; Jacobsson, Richard; Kain, Verena; Lamas Garcia, Inigo; Lendaro, Jerome; Masi, Alessandro; Mirarchi, Daniele; Pari, Michelangelo; Prieto Prieto, Javier; Redaelli, Stefano; Rossi, Roberto; Scandale, Walter; Seidenbinder, Regis; Serrano Galvez, Pablo; Stoel, Linda; Velotti, Francesco Maria; Zamantzas, Christos" /> <meta name="keywords" content="Slow extraction,, resonance,, beam loss,, diffuser,, bent crystal,, activation,, radiation,, electrostatic septum" /> <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="Improvements to the SPS Slow Extraction for High Intensity Operation" name="citation_title" /> <meta content="Balhan, Bruno" name="citation_author" /> <meta content="Galluccio, Francesca" name="citation_author" /> <meta content="Bestmann, Patrick" name="citation_author" /> <meta content="Mirarchi, Daniele" name="citation_author" /> <meta content="Fraser, Matthew Alexander" name="citation_author" /> <meta content="Serrano Galvez, Pablo" name="citation_author" /> <meta content="Masi, Alessandro" name="citation_author" /> <meta content="Borburgh, Jan" name="citation_author" /> <meta content="Pari, Michelangelo" name="citation_author" /> <meta content="Redaelli, Stefano" name="citation_author" /> <meta content="Gavrikov, Yury" name="citation_author" /> <meta content="Jacobsson, Richard" name="citation_author" /> <meta content="Rossi, Roberto" name="citation_author" /> <meta content="Kain, Verena" name="citation_author" /> <meta content="Butcher, Mark" name="citation_author" /> <meta content="Scandale, Walter" name="citation_author" /> <meta content="Hirlander, Simon" name="citation_author" /> <meta content="Lamas Garcia, Inigo" name="citation_author" /> <meta content="Di Castro, Mario" name="citation_author" /> <meta content="Stoel, Linda" name="citation_author" /> <meta content="Donze, Mathieu" name="citation_author" /> <meta content="Seidenbinder, Regis" name="citation_author" /> <meta content="Bjorkman, Daniel" name="citation_author" /> <meta content="Zamantzas, Christos" name="citation_author" /> <meta content="Velotti, Francesco Maria" name="citation_author" /> <meta content="Prieto Prieto, Javier" name="citation_author" /> <meta content="Lendaro, Jerome" name="citation_author" /> <meta content="Esposito, Luigi Salvatore" name="citation_author" /> <meta content="Goddard, Brennan" name="citation_author" /> <meta content="Harrison, Anthony" name="citation_author" /> <meta content="Jorat, Louise Olivia" name="citation_author" /> <meta content="Calviani, Marco" name="citation_author" /> <meta content="Gilardoni, Simone" name="citation_author" /> <meta content="2019/03/26" name="citation_publication_date" /> <meta name="citation_online_date" content="2019/03/26"> <meta content="CERN-ACC-NOTE-2019-0010" name="citation_technical_report_number" /> <meta content="CERN-PBC-Notes-2021-007" name="citation_technical_report_number" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2668989/files/CERN-ACC-NOTE-2019-0010.pdf" />  <meta content="Improvements to the SPS Slow Extraction for High Intensity Operation" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2668989" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="Slow extraction using the third-integer resonance and thin electrostatic septa as used in the SPS to serve the North Area is a process with inherent beam loss. For high-ﬂux 400 GeV protons, the beam losses result in high machine activation, reduced component lifetime and severe limitations on personnel access and maintenance. The instantaneous and integrated loss levels are strong limitations on the annual attainable POT for present operation and for the much higher ﬂuxes requested by SHiP at the proposed BDF facility. In this report the present constraints and potential improvements to the slow extraction system in the SPS are described along with the recent theoretical studies and practical implementation of prospective operational improvements. Machine results of testing of new extraction loss reduction techniques and hardware are presented in the context of SHiP POT requests, SPS BDF and the PBC project and the potential extraction loss reduction factor is evaluated with an outlook to future high intensity operation. The prospects of deployment on the present operational beams and the resulting improvement factors are discussed." property="og:description" />  <meta content="summary" name="twitter:card" /> <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="ATS32Notes search" lang="de">  <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=de&referer=https%3A//cds.cern.ch/record/2668989/export/hx%3Fln%3Dde" 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=de">Suchen</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=de">Absenden</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=de">Hilfe</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=de">Personalisieren</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=de">Ihre Benachrichtigungen</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=de">Ihre Körbe</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=de">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=de">Ihre Suchanfragen</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=de" class="navtrail">Hauptseite</a> > <a href="/collection/Articles%20%26%20Preprints?ln=de" class="navtrail">Articles & Preprints</a> > <a href="/collection/CERN%20Internal%20Notes?ln=de" class="navtrail">CERN Notes</a> > <a href="/collection/ATS%20Notes?ln=de" class="navtrail">ATS Notes</a> > <a class="navtrail" href="/record/2668989">Improvements to the SPS Slow Extraction for High Intensity Operation</a> > BibTeX </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <pre> @article{Balhan:2668989, author = "Balhan, Bruno and Bestmann, Patrick and Bjorkman, Daniel and Borburgh, Jan and Butcher, Mark and Calviani, Marco and Di Castro, Mario and Donze, Mathieu and Esposito, Luigi Salvatore and Fraser, Matthew Alexander and Galluccio, Francesca and Gavrikov, Yury and Gilardoni, Simone and Goddard, Brennan and Jorat, Louise Olivia and Harrison, Anthony and Hirlander, Simon and Jacobsson, Richard and Kain, Verena and Lamas Garcia, Inigo and Lendaro, Jerome and Masi, Alessandro and Mirarchi, Daniele and Pari, Michelangelo and Prieto Prieto, Javier and Redaelli, Stefano and Rossi, Roberto and Scandale, Walter and Seidenbinder, Regis and Serrano Galvez, Pablo and Stoel, Linda and Velotti, Francesco Maria and Zamantzas, Christos", title = "{Improvements to the SPS Slow Extraction for High Intensity Operation}", year = "2019", url = "https://cds.cern.ch/record/2668989", } </pre></div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=de">Suchen</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=de">Absenden</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=de">Personalisieren</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=de">Hilfe</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 /> Verwaltet von <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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