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="pl" xml:lang="pl" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Design, Fabrication, and Test of a 5 GHz Klystron Based on the Kladistron Principle - 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/2859812" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2859812?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2859812?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2859812?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2859812?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2859812?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2859812?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2859812?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2859812?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2859812?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2859812?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2859812?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2859812?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2859812?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2859812?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2859812?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2859812?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2859812?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2859812?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2859812?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=pl" /> <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="pl" /> <meta name="description" content="A new bunching method, named “kladistron” has been developed at CEA in order to provide high-efficiency klystrons. A first “kladistron” prototype was designed and realized. It was adapted from the 4.9-GHz TH2166 from Thales, where the interaction line was transformed from six to 16 cavities. The design and fabrication phases of this prototype are developed in this article. The kladistron prototype was tested in Thales facility. Its efficiency is finally lower (41%) than expected (55%), moreover it presents a spurious oscillation at 4.96 GHz. After analysis of the experimental results, it is concluded that the discrepancy between design and real frequencies is the cause for the low efficiency while the spurious oscillation results from a high gain peak at 4.96 GHz. A new bunching method, named "kladistron" has been developed at CEA in order to provide high efficiency klystrons. A first "kladistron" prototype was designed and realized. It was adapted from the 4.9 GHz TH2166 from Thales, where the interaction line was transformed from 6 to 16 cavities. The design and fabrication phases of this prototype are developed in this paper. The kladistron prototype was tested in Thales facility. Its efficiency is finally lower (41 %) than expected (55 %), moreover it presents a spurious oscillation at 4.96 GHz. After analysis of the experimental results, it is concluded that the discrepancy between design and real frequencies is the cause for the low efficiency while the spurious oscillation results from a high gain peak at 4.96 GHz. Plouin, Juliette; Marchand, Claude; Hamel, Pierrick; Arsenyev, Sergey; Mollard, Antoine; Beunas, Armel; Denis, Philippe; Peauger, Franck" /> <meta name="keywords" content="Klystrons, Radio frequency, Titanium, Prototypes, Brazing, Fabrication, Oscillators, klystrons, bunching method, frequency 4.96 GHz, frequency 5.0 GHz, high-efficiency klystrons, interaction line, kladistron principle, kladistron prototype, spurious oscillation results, High efficiency, klystron, manufacturing process, spurious oscillation" /> <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="IEEE : Design, Fabrication, and Test of a 5 GHz Klystron Based on the Kladistron Principle" name="citation_title" /> <meta content="Plouin, Juliette" name="citation_author" /> <meta content="Denis, Philippe" name="citation_author" /> <meta content="Beunas, Armel" name="citation_author" /> <meta content="Hamel, Pierrick" name="citation_author" /> <meta content="Mollard, Antoine" name="citation_author" /> <meta content="Marchand, Claude" name="citation_author" /> <meta content="Peauger, Franck" name="citation_author" /> <meta content="Arsenyev, Sergey" name="citation_author" /> <meta content="10.1109/TED.2023.3236590" name="citation_doi" /> <meta content="IEEE Trans. Electron Devices" name="citation_journal_title" /> <meta content="70" name="citation_volume" /> <meta content="1275-1282" name="citation_firstpage" /> <meta content="2024/04/08" name="citation_publication_date" /> <meta name="citation_online_date" content="2023/05/25"> <meta content="arXiv:2404.05493" name="citation_technical_report_number" /> <meta content="10.1109/TED.2023.3236590" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2859812/files/2404.05493.pdf" />  <meta content="Design, Fabrication, and Test of a 5 GHz Klystron Based on the Kladistron Principle" property="og:title" /> <meta content="IEEE" property="og:title" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2859812" property="og:url" /> <meta name="twitter:image" content="https://cds.cern.ch/record/2859812/files/Imod.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/Imod.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/Imod.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klad_demi_ligne.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klad_demi_ligne.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/EffPin.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/EffPin.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/spectra8and10.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/spectra8and10.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klys_velocities.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klys_velocities.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klys_applegates.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klys_applegates.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/ssgain2.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/ssgain2.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/cavities2to15.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/cavities2to15.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klad_whole.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klad_whole.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/bunching.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/bunching.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/design_efficiency.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/design_efficiency.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klys_currents.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klys_currents.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/freq_rend.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/freq_rend.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/tuners2.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/tuners2.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/tuners1.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/tuners1.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klys_EffPin.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klys_EffPin.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klad_scheme2.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klad_scheme2.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/tit1.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/tit1.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klad_ligne_braz.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klad_ligne_braz.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/tit2.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/tit2.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/klad_prelim_simul.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/klad_prelim_simul.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/freqs123.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/freqs123.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/loop.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/loop.png" /> <meta property="og:image" content="https://cds.cern.ch/record/2859812/files/multipactor.png" /> <meta property="og:image:secure_url" content="https://cds.cern.ch/record/2859812/files/multipactor.png" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="arXiv" property="og:description" /> <meta content="IEEE" property="og:description" /> <meta content="A new bunching method, named &quot;kladistron&quot; has been developed at CEA in order to provide high efficiency klystrons. A first &quot;kladistron&quot; prototype was designed and realized. It was adapted from the 4.9 GHz TH2166 from Thales, where the interaction line was transformed from 6 to 16 cavities. The design and fabrication phases of this prototype are developed in this paper. The kladistron prototype was tested in Thales facility. Its efficiency is finally lower (41 %) than expected (55 %), moreover it presents a spurious oscillation at 4.96 GHz. After analysis of the experimental results, it is concluded that the discrepancy between design and real frequencies is the cause for the low efficiency while the spurious oscillation results from a high gain peak at 4.96 GHz." property="og:description" /> <meta content="A new bunching method, named “kladistron” has been developed at CEA in order to provide high-efficiency klystrons. A first “kladistron” prototype was designed and realized. It was adapted from the 4.9-GHz TH2166 from Thales, where the interaction line was transformed from six to 16 cavities. The design and fabrication phases of this prototype are developed in this article. The kladistron prototype was tested in Thales facility. Its efficiency is finally lower (41%) than expected (55%), moreover it presents a spurious oscillation at 4.96 GHz. After analysis of the experimental results, it is concluded that the discrepancy between design and real frequencies is the cause for the low efficiency while the spurious oscillation results from a high gain peak at 4.96 GHz." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="pl">  <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=pl&referer=https%3A//cds.cern.ch/record/2859812%3Fln%3Dpl" 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=pl">Szukaj</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=pl">Dodaj</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=pl">Pomoc</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=pl">Ustawienia</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=pl">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=pl">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=pl">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=pl">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=pl" class="navtrail">Główna</a> > Design, Fabrication, and Test of a 5 GHz Klystron Based on the Kladistron Principle </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/2859812/?ln=pl">Informacja </a></li><li class=""><a href="/record/2859812/files?ln=pl">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="2859812"></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"> Report number </td><td style="padding-left:5px;"><a href="http://arxiv.org/abs/arXiv:2404.05493">arXiv:2404.05493</a></td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Design, Fabrication, and Test of a 5 GHz Klystron Based on the Kladistron Principle</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=Plouin%2C%20Juliette&ln=pl">Plouin, Juliette</a> (Saclay) ; <a href="https://cds.cern.ch/search?f=author&p=Marchand%2C%20Claude&ln=pl">Marchand, Claude</a> (Saclay) ; <a href="https://cds.cern.ch/search?f=author&p=Hamel%2C%20Pierrick&ln=pl">Hamel, Pierrick</a> (Saclay) ; <a href="https://cds.cern.ch/search?f=author&p=Arsenyev%2C%20Sergey&ln=pl">Arsenyev, Sergey</a> (Saclay) ; <a href="https://cds.cern.ch/search?f=author&p=Mollard%2C%20Antoine&ln=pl">Mollard, Antoine</a> (Thales Electron Devices, Velizy) ; <a href="https://cds.cern.ch/search?f=author&p=Beunas%2C%20Armel&ln=pl">Beunas, Armel</a> (Thales Electron Devices, Velizy) ; <a href="https://cds.cern.ch/search?f=author&p=Denis%2C%20Philippe&ln=pl">Denis, Philippe</a> (Thales Electron Devices, Velizy) ; <a href="https://cds.cern.ch/search?f=author&p=Peauger%2C%20Franck&ln=pl">Peauger, Franck</a> (CERN)</td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2023-03</td></tr> <tr><td class="formatRecordLabel"> Imprint </td><td style="padding-left:5px;">2024-04-08</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">8</td></tr> <tr><td class="formatRecordLabel"> Note </td><td style="padding-left:5px;">9 pages, 24 figures</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1109/TED.2023.3236590"><i>IEEE Trans. Electron Devices</i> 70 (2023) 1275-1282</a> </a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1109/TED.2023.3236590" title="DOI" target="_blank">10.1109/TED.2023.3236590</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">physics.plasm-ph ; Other Fields of Physics ; physics.acc-ph ; Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">A new bunching method, named "kladistron" has been developed at CEA in order to provide high efficiency klystrons. A first "kladistron" prototype was designed and realized. It was adapted from the 4.9 GHz TH2166 from Thales, where the interaction line was transformed from 6 to 16 cavities. The design and fabrication phases of this prototype are developed in this paper. The kladistron prototype was tested in Thales facility. Its efficiency is finally lower (41 %) than expected (55 %), moreover it presents a spurious oscillation at 4.96 GHz. After analysis of the experimental results, it is concluded that the discrepancy between design and real frequencies is the cause for the low efficiency while the spurious oscillation results from a high gain peak at 4.96 GHz.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">preprint: (License: <a href="http://creativecommons.org/licenses/by-nc-nd/4.0/">CC BY-NC-ND 4.0</a>)<br/>© 2023-2025 IEEE</td></tr> </table> <br /><div style="max-width:1024px;margin:auto"><div style="overflow-x:auto;display:inline;width:100%;"><a href="/record/2859812/plots#0"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/2859812/files/klad_prelim_simul.png" title=" Figures of merit of a 10 cavities (left) and a 20 cavities (right) 12~GHz kladistron. Top : phase, medium : first (blue) and second (red) relative harmonic modulation current, bottom : normalized velocity, versus position in the interaction line. The cavities positions are represented by purple vertical lines." width="200px"/></a> <a href="/record/2859812/plots#1"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/2859812/files/klad_scheme2.png" title=" Principle of adaptation of the TH2166 to the kladistron. The elements in blue are kept from the TH2166 whereas the elements in orange (the intermediate cavities) are redesigned for the kladistron." width="200px"/></a> <a href="/record/2859812/plots#2"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/2859812/files/design_efficiency.png" title=" Efficiency comparison between the TH2166 klystron and the optimized kladistron." width="200px"/></a> <a href='/record/2859812/plots'>Show more plots</a></div></div><br /> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2656533">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"> Rekord stworzony 2023-05-25, ostatnia modyfikacja 2024-04-11</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=pl&p=recid%3A2859812&rm=wrd" class="moreinfo">Podobne rekordy</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">Pełny tekst:</small> <br /><a href="/record/2859812/files/2404.05493.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Pobierz pełny tekst" /><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=pl&recid=2859812">Dodaj do koszyka osobistego</a></li> <li>Wyeksportuj jako <a style="text-decoration:underline;font-weight:normal" href="/record/2859812/export/hx?ln=pl">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2859812/export/hm?ln=pl">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2859812/export/xm?ln=pl">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2859812/export/xd?ln=pl">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2859812/export/xe?ln=pl">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2859812/export/xn?ln=pl">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2859812/export/xw?ln=pl">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/2404.0549/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2859812', addEmail: true, title: "Design, Fabrication, and Test of a 5 GHz Klystron Based on the Kladistron Principle", description: "A new bunching method, named \u201ckladistron\u201d has been developed at CEA in order to provide high-efficiency klystrons. A first \u201ckladistron\u201d prototype was designed and realized. It was adapted from the 4.9-GHz TH2166 from Thales, where the interaction line was transformed from six to 16 cavities. The design and fabrication phases of this prototype are developed in this article. The kladistron prototype was tested in Thales facility. Its efficiency is finally lower (41%) than expected (55%), moreover it presents a spurious oscillation at 4.96 GHz. After analysis of the experimental results, it is concluded that the discrepancy between design and real frequencies is the cause for the low efficiency while the spurious oscillation results from a high gain peak at 4.96 GHz." }); // ]]> </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=pl">Szukaj</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=pl">Dodaj</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=pl">Ustawienia</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=pl">Pomoc</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 /> System <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Administrator <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"> Ta strona jest również dostępna w następujących językach:<br /><a href="/record/2859812?ln=bg" class="langinfo">Български</a>  <a href="/record/2859812?ln=ca" class="langinfo">Català</a>  <a href="/record/2859812?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2859812?ln=el" class="langinfo">Ελληνικά</a>  <a href="/record/2859812?ln=en" class="langinfo">English</a>  <a href="/record/2859812?ln=es" class="langinfo">Español</a>  <a href="/record/2859812?ln=fr" class="langinfo">Français</a>  <a href="/record/2859812?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2859812?ln=it" class="langinfo">Italiano</a>  <a href="/record/2859812?ln=ja" class="langinfo">日本語</a>  <a href="/record/2859812?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2859812?ln=no" class="langinfo">Norsk/Bokmål</a>  <span class="langinfo">Polski</span>  <a href="/record/2859812?ln=pt" class="langinfo">Português</a>  <a href="/record/2859812?ln=ru" class="langinfo">Русский</a>  <a href="/record/2859812?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2859812?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2859812?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2859812?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>