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The positrons are produced by a 6 GeV electron drive-beam incident on a target-converter at 200 Hz. The drive beam comes in 2 bunches spaced by 25 ns with a maximum charge of ~5 nC per bunch. Two scenarios using conventional and hybrid targets are being studied for positron production. According to the FCC CDR, the Flux Concentrator is used as the matching device for the capture system, followed by several accelerating structures embedded in the solenoidal field. Then, the positrons are further accelerated to be injected into the damping ring. Recently, the feasibility study on using a SC solenoid for the positron capture has been started, and the design based on the HTS technology is under investigation. In addition, the large aperture 2 GHz RF structures, which have been specially designed for the FCC-ee positron capture system, are used with the goal of demonstrating accepted positron yield values well beyond the values obtained with state-of-the-art positron sources. The purpose of this paper is to review the current status of the FCC-ee positron source design, highlighting the recent research into the positron production, capture system, primary acceleration, and injection into the damping ring. Chaikovska, Iryna; Bacci, Alberto; Latina, Andrea; Lechner, Anton; Perillo Marcone, Antonio; Humann, Barbara; Auchmann, Bernhard; Alharthi, Fahad; Kosse, Jaap; Grenard, Jean-Louis; Rossetti Conti, Marcello; Schaer, Mattia; Duda, Michal; Craievich, Paolo; Martyshkin, Pavel; Mena Andrade, Ramiro; Zennaro, Riccardo; Chehab, Robert; Mytrochenko, Viktor; Zhao, Yongke; Enomoto, Yoshinori" /> <meta name="keywords" content="positron, target, linac, solenoid, bunching" /> <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 : Update on the FCC-ee positron source design studies" name="citation_title" /> <meta content="Chaikovska, Iryna" name="citation_author" /> <meta content="Chehab, Robert" name="citation_author" /> <meta content="Martyshkin, Pavel" name="citation_author" /> <meta content="Auchmann, Bernhard" name="citation_author" /> <meta content="Schaer, Mattia" name="citation_author" /> <meta content="Zennaro, Riccardo" name="citation_author" /> <meta content="Enomoto, Yoshinori" name="citation_author" /> <meta content="Craievich, Paolo" name="citation_author" /> <meta content="Mena Andrade, Ramiro" name="citation_author" /> <meta content="Rossetti Conti, Marcello" name="citation_author" /> <meta content="Latina, Andrea" name="citation_author" /> <meta content="Alharthi, Fahad" name="citation_author" /> <meta content="Grenard, Jean-Louis" name="citation_author" /> <meta content="Duda, Michal" name="citation_author" /> <meta content="Zhao, Yongke" name="citation_author" /> <meta content="Mytrochenko, Viktor" name="citation_author" /> <meta content="Kosse, Jaap" name="citation_author" /> <meta content="Humann, Barbara" name="citation_author" /> <meta content="Perillo Marcone, Antonio" name="citation_author" /> <meta content="Bacci, Alberto" name="citation_author" /> <meta content="Lechner, Anton" name="citation_author" /> <meta content="10.18429/JACoW-IPAC2023-MOPL095" name="citation_doi" /> <meta content="JACoW IPAC" name="citation_journal_title" /> <meta content="2023" name="citation_volume" /> <meta content="MOPL095" name="citation_firstpage" /> <meta content="2023" name="citation_publication_date" /> <meta name="citation_online_date" content="2024/01/11"> <meta content="10.18429/JACoW-IPAC2023-MOPL095" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2886196/files/document.pdf" />  <meta content="JACOW" property="og:title" /> <meta content="Update on the FCC-ee positron source design studies" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2886196" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="The studies and R&D; on the high-intensity positron source for the FCC-ee have been initiated for a while. 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The purpose of this paper is to review the current status of the FCC-ee positron source design, highlighting the recent research into the positron production, capture system, primary acceleration, and injection into the damping ring." 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/2886196" 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> > Update on the FCC-ee positron source design studies </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/2886196/?ln=en">Information </a></li><li class=""><a href="/record/2886196/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="2886196"></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>Update on the FCC-ee positron source design studies</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 21 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=Chaikovska%2C%20Iryna&ln=en">Chaikovska, Iryna</a> (IJCLab, Orsay) ; <a href="https://cds.cern.ch/search?f=author&p=Bacci%2C%20Alberto&ln=en">Bacci, Alberto</a> (INFN, Milan) ; <a href="https://cds.cern.ch/search?f=author&p=Latina%2C%20Andrea&ln=en">Latina, Andrea</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Lechner%2C%20Anton&ln=en">Lechner, Anton</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Perillo%20Marcone%2C%20Antonio&ln=en">Perillo Marcone, Antonio</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Humann%2C%20Barbara&ln=en">Humann, Barbara</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Auchmann%2C%20Bernhard&ln=en">Auchmann, Bernhard</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Alharthi%2C%20Fahad&ln=en">Alharthi, Fahad</a> (IJCLab, Orsay ; KACST, Riyadh) ; <a href="https://cds.cern.ch/search?f=author&p=Kosse%2C%20Jaap&ln=en">Kosse, Jaap</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Grenard%2C%20Jean-Louis&ln=en">Grenard, Jean-Louis</a> (CERN)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Rossetti%20Conti%2C%20Marcello&ln=en">Rossetti Conti, Marcello</a> (INFN, Milan) ; <a href="https://cds.cern.ch/search?f=author&p=Schaer%2C%20Mattia&ln=en">Schaer, Mattia</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Duda%2C%20Michal&ln=en">Duda, Michal</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Craievich%2C%20Paolo&ln=en">Craievich, Paolo</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Martyshkin%2C%20Pavel&ln=en">Martyshkin, Pavel</a> (ITAE, Moscow) ; <a href="https://cds.cern.ch/search?f=author&p=Mena%20Andrade%2C%20Ramiro&ln=en">Mena Andrade, Ramiro</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Zennaro%2C%20Riccardo&ln=en">Zennaro, Riccardo</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Chehab%2C%20Robert&ln=en">Chehab, Robert</a> (IJCLab, Orsay) ; <a href="https://cds.cern.ch/search?f=author&p=Mytrochenko%2C%20Viktor&ln=en">Mytrochenko, Viktor</a> (IJCLab, Orsay ; Kharkov, KIPT) ; <a href="https://cds.cern.ch/search?f=author&p=Zhao%2C%20Yongke&ln=en">Zhao, Yongke</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Enomoto%2C%20Yoshinori&ln=en">Enomoto, Yoshinori</a> (KEK, Tsukuba)</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;">2023</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">4</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.18429/JACoW-IPAC2023-MOPL095"><i>JACoW IPAC</i> 2023 (2023) MOPL095</a> </a></td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2858945">14th International Particle Accelerator Conference (IPAC 2023)</a>, Venice, Italy, 7 - 12 May 2023, pp.MOPL095</td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.18429/JACoW-IPAC2023-MOPL095" title="DOI" target="_blank">10.18429/JACoW-IPAC2023-MOPL095</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;">The studies and R&D; on the high-intensity positron source for the FCC-ee have been initiated for a while. The positrons are produced by a 6 GeV electron drive-beam incident on a target-converter at 200 Hz. The drive beam comes in 2 bunches spaced by 25 ns with a maximum charge of  5 nC per bunch. Two scenarios using conventional and hybrid targets are being studied for positron production. According to the FCC CDR, the Flux Concentrator is used as the matching device for the capture system, followed by several accelerating structures embedded in the solenoidal field. Then, the positrons are further accelerated to be injected into the damping ring. Recently, the feasibility study on using a SC solenoid for the positron capture has been started, and the design based on the HTS technology is under investigation. In addition, the large aperture 2 GHz RF structures, which have been specially designed for the FCC-ee positron capture system, are used with the goal of demonstrating accepted positron yield values well beyond the values obtained with state-of-the-art positron sources. The purpose of this paper is to review the current status of the FCC-ee positron source design, highlighting the recent research into the positron production, capture system, primary acceleration, and injection into the damping ring.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;"><a href="https://creativecommons.org/licenses/by/4.0">CC-BY-4.0</a></td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2718437">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 2024-01-11, last modified 2024-01-11</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"></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/2886196/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=2886196">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2886196/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886196/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886196/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886196/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886196/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2886196/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886196/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:2886196/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2886196', addEmail: true, title: "Update on the FCC-ee positron source design studies", description: "The studies and R&D; on the high-intensity positron source for the FCC-ee have been initiated for a while. The positrons are produced by a 6 GeV electron drive-beam incident on a target-converter at 200 Hz. The drive beam comes in 2 bunches spaced by 25 ns with a maximum charge of ~5 nC per bunch. Two scenarios using conventional and hybrid targets are being studied for positron production. According to the FCC CDR, the Flux Concentrator is used as the matching device for the capture system, followed by several accelerating structures embedded in the solenoidal field. Then, the positrons are further accelerated to be injected into the damping ring. Recently, the feasibility study on using a SC solenoid for the positron capture has been started, and the design based on the HTS technology is under investigation. In addition, the large aperture 2 GHz RF structures, which have been specially designed for the FCC-ee positron capture system, are used with the goal of demonstrating accepted positron yield values well beyond the values obtained with state-of-the-art positron sources. The purpose of this paper is to review the current status of the FCC-ee positron source design, highlighting the recent research into the positron production, capture system, primary acceleration, and injection into the damping ring." }); // ]]> </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> :: <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 /> Maintained by <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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