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This R&D program covers both the laser and the photocathode side. Whereas the available laser pulse energy in ultra-violet (UV) is currently limited by the optical defects in the 4thharmonics frequency conversion crystal induced by the0.14 ms long pulse trains, recent measurements of Cs3Sbphotocathodes sensitive to green light showed their potential to overcome this limitation. Moreover, using visible laser beams leads to better stability of produced electron bunches and one can take advantages of the availability of higher quality optics. The studied Cs3Sbphotocathodes have been produced in the CERN photo emission laboratory using the co-deposition technique and tested in a DC gun set-up. The analysis of data acquired during the cathode production process will be presented in this paper, as well as the results of lifetime measurements in the DC gun Martini, Irene; Chevallay, Eric; Doebert, Steffen; Fedosseev, Valentine; Hessler, Christoph; Martyanov, Mikhail" /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); </script> <script src="/MathJax/MathJax.js?config=TeX-AMS_CHTML" type="text/javascript"> </script>  <meta content="Studies of Cs3Sb cathodes for the CLIC drive beam photo injector option" name="citation_title" /> <meta content="Martini, Irene" name="citation_author" /> <meta content="Doebert, Steffen" name="citation_author" /> <meta content="Chevallay, Eric" name="citation_author" /> <meta content="Fedosseev, Valentine" name="citation_author" /> <meta content="Martyanov, Mikhail" name="citation_author" /> <meta content="Hessler, Christoph" name="citation_author" /> <meta content="2013/05/12" name="citation_publication_date" /> <meta name="citation_online_date" content="2013/12/11"> <meta content="CERN-OPEN-2013-040" name="citation_technical_report_number" /> <meta content="CLIC-Note-1020" name="citation_technical_report_number" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/1635933/files/CERN-OPEN-2013-040.pdf" />  <meta content="Studies of Cs3Sb cathodes for the CLIC drive beam photo injector option" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/1635933" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="Within the CLIC (Compact Linear Collider) project, feasibility studies of a photo injector option for the drive beam as an alternative to its baseline design using a thermionic electron gun are on-going. 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min-height: 360px; } </style> <table class="formatRecordTableFullWidth"> <tr> <td class="formatRecordHeader" style="background-image: url('/img/journals.jpg');" colspan="2">  Preprint </td> </tr> <tr><td class="formatRecordLabel"> Report number </td><td style="padding-left:5px;">CERN-OPEN-2013-040 ; CLIC-Note-1020</td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Studies of Cs3Sb cathodes for the CLIC drive beam photo injector option</b></td></tr> <style> .video_control_container, #video_controlbutton { display: none; }#video_detailbox_download {display: none;}#video_detailbox_embed {display: none;}</style> <div class="video_control_container"> <div style="box-sizing: inherit;position: relative;min-height: 1em;margin: 1em 0;background: #f8f8f9;padding: 1em 1.5em;line-height: 1.4285em;transition: opacity .1s ease,color .1s ease,background .1s ease,box-shadow .1s ease,-webkit-box-shadow .1s ease;border-radius: .28571429rem;font-size: 1.1em;margin-top: 0;margin-bottom: 6px;background-color: #f8ffff;color: #276f86;box-shadow: 0 0 0 1px #a9d5de inset,0 0 0 0 transparent;"> <i class="fa fa-info"></i><span style="padding-left: 9px;">If you experience any problem watching the video, click the download button below</span> </div> <a id="video_controlbutton_download" rel="download_button" class="video_controlbutton" href="#">Download</a> <a id="video_controlbutton_embed" class="video_controlbutton" href="#">Embed</a> </div> <div id="video_detailbox_download" style="margin:10px"> </div> <div id="video_detailbox_embed" style="margin:10px"> </div> <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=Martini%2C%20Irene&ln=pt">Martini, Irene</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Chevallay%2C%20Eric&ln=pt">Chevallay, Eric</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Doebert%2C%20Steffen&ln=pt">Doebert, Steffen</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Fedosseev%2C%20Valentine&ln=pt">Fedosseev, Valentine</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Hessler%2C%20Christoph&ln=pt">Hessler, Christoph</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Martyanov%2C%20Mikhail&ln=pt">Martyanov, Mikhail</a> (CERN)</td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2013</td></tr>  <script type="text/javascript"> /* * Changes the Imprint title to Date - Duration as requested by RQF0820114 * This is a hack not to touch the general imprint format element */ $(document).ready(function() { var collections = 'PREPRINT ; ConferencePaper'; if (collections.indexOf('E-LEARNING') > -1) { $('.cern-imprint-label').text('Date - Duration'); } }) </script> <tr><td class="formatRecordLabel cern-imprint-label"> Imprint </td><td style="padding-left:5px;">12 May 2013</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">4</td></tr>  <tr><td class="formatRecordLabel"> Presented at </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/1562959">4th International Particle Accelerator Conference</a>, Shangai, China, 12 - 17 May 2013</td></tr> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Accelerator/Facility, Experiment </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?p=CLIC&f=693__a">CLIC</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">Within the CLIC (Compact Linear Collider) project, feasibility studies of a photo injector option for the drive beam as an alternative to its baseline design using a thermionic electron gun are on-going. This R&D; program covers both the laser and the photocathode side. Whereas the available laser pulse energy in ultra-violet (UV) is currently limited by the optical defects in the 4thharmonics frequency conversion crystal induced by the0.14 ms long pulse trains, recent measurements of Cs3Sbphotocathodes sensitive to green light showed their potential to overcome this limitation. Moreover, using visible laser beams leads to better stability of produced electron bunches and one can take advantages of the availability of higher quality optics. The studied Cs3Sbphotocathodes have been produced in the CERN photo emission laboratory using the co-deposition technique and tested in a DC gun set-up. The analysis of data acquired during the cathode production process will be presented in this paper, as well as the results of lifetime measurements in the DC gun</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">Preprint: © 2013-2025 CERN (License: <a href="http://creativecommons.org/licenses/by/3.0/">CC-BY-3.0</a>)</td></tr> <tr><td class="formatRecordLabel"> Submitted by </td><td style="padding-left:5px;"><a href="mailto:annabel.anxionnaz@cern.ch">annabel.anxionnaz@cern.ch</a></td></tr> </table> <br/><div><div style="clear: both;"> </div></div> <script type="text/javascript"> // Initially hide: $(".longCaption").hide(); // Allow to toggle visibility: $(".toggleLongCaption").toggle(function(){ $(this).siblings(".longCaption").show('fast'); var thisElem = $(this); thisElem.text(thisElem.text() === "mais" ? 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