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="bg" xml:lang="bg" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Measurements of beam correlations induced via coupled resonance crossing in the CERN PSB - 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/2913149/export/hm" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2913149/export/hm?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2913149/export/hm?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2913149/export/hm?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2913149/export/hm?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2913149/export/hm?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2913149/export/hm?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2913149/export/hm?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2913149/export/hm?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2913149/export/hm?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2913149/export/hm?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2913149/export/hm?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2913149/export/hm?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2913149/export/hm?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2913149/export/hm?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2913149/export/hm?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2913149/export/hm?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2913149/export/hm?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2913149/export/hm?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2913149/export/hm?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=bg" /> <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="bg" /> <meta name="description" content="Beam profile measurements in the LHC and its injector complex show heavy tails in both transverse planes. From standard profile measurements, it is not possible to determineif the underlying phase space distribution is statistically independent. A measurement campaign in the CERN PSB was carried out to introduce cross-plane dependence in bunched beams in controlled conditions, in view of characterizing the LHC operational beam distributions. The results of the measurement campaign demonstrate how heavy tails can be created via coupled resonance excitation of the lattice in the presence of space charge, in accordance with predictions from the fixed line theory. The coupled resonance introduces dependence between the different planes, which persists after the resonance excitation is removed. Lamb, Elleanor; Asvesta, Foteini; Franchetti, Giuliano; Sterbini, Guido; Bartosik, Hannes; Seidel, Mike; Albright, Simon; Prebibaj, Tirsi" /> <meta name="keywords" content="resonance, distributed, coupling, bunching, sextupole" /> <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="JACOW : Measurements of beam correlations induced via coupled resonance crossing in the CERN PSB" name="citation_title" /> <meta content="Lamb, Elleanor" name="citation_author" /> <meta content="Franchetti, Giuliano" name="citation_author" /> <meta content="Albright, Simon" name="citation_author" /> <meta content="Asvesta, Foteini" name="citation_author" /> <meta content="Sterbini, Guido" name="citation_author" /> <meta content="Bartosik, Hannes" name="citation_author" /> <meta content="Prebibaj, Tirsi" name="citation_author" /> <meta content="Seidel, Mike" name="citation_author" /> <meta content="10.18429/JACoW-IPAC2024-TUPC07" name="citation_doi" /> <meta content="JACoW IPAC" name="citation_journal_title" /> <meta content="2024" name="citation_volume" /> <meta content="TUPC07" name="citation_firstpage" /> <meta content="2024" name="citation_publication_date" /> <meta name="citation_online_date" content="2024/10/11"> <meta content="10.18429/JACoW-IPAC2024-TUPC07" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2913149/files/document.pdf" />  <meta content="JACOW" property="og:title" /> <meta content="Measurements of beam correlations induced via coupled resonance crossing in the CERN PSB" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2913149" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="JACOW" property="og:description" /> <meta content="Beam profile measurements in the LHC and its injector complex show heavy tails in both transverse planes. From standard profile measurements, it is not possible to determineif the underlying phase space distribution is statistically independent. A measurement campaign in the CERN PSB was carried out to introduce cross-plane dependence in bunched beams in controlled conditions, in view of characterizing the LHC operational beam distributions. The results of the measurement campaign demonstrate how heavy tails can be created via coupled resonance excitation of the lattice in the presence of space charge, in accordance with predictions from the fixed line theory. The coupled resonance introduces dependence between the different planes, which persists after the resonance excitation is removed." property="og:description" />  <meta content="summary" name="twitter:card" /> <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="bg">  <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=bg&referer=https%3A//cds.cern.ch/record/2913149/export/hm%3Fln%3Dbg" 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=bg">Търсене</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=bg">Изпращане</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=bg">Помощ</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=bg">Персонализиране</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=bg">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=bg">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=bg">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=bg">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=bg" class="navtrail">Начало</a> > <a class="navtrail" href="/record/2913149">Measurements of beam correlations induced via coupled resonance crossing in the CERN PSB</a> > HTML MARC </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <pre style="margin: 1em 0px;">002913149 001__ 2913149 002913149 003__ SzGeCERN 002913149 005__ 20241011212340.0 002913149 0247_ $$2DOI$$9JACOW$$a10.18429/JACoW-IPAC2024-TUPC07 002913149 0248_ $$aoai:cds.cern.ch:2913149$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN 002913149 035__ $$9https://inspirehep.net/api/oai2d$$aoai:inspirehep.net:2813377$$d2024-10-09T11:15:06Z$$h2024-10-11T04:00:09Z$$mmarcxml 002913149 035__ $$9Inspire$$a2813377 002913149 041__ $$aeng 002913149 100__ $$aLamb, Elleanor$$uCERN$$uEcole Polytechnique, Lausanne$$vEcole Polytechnique Fédérale de Lausanne 002913149 245__ $$9JACOW$$aMeasurements of beam correlations induced via coupled resonance crossing in the CERN PSB 002913149 260__ $$c2024 002913149 300__ $$a4 p 002913149 520__ $$9JACOW$$aBeam profile measurements in the LHC and its injector complex show heavy tails in both transverse planes. From standard profile measurements, it is not possible to determineif the underlying phase space distribution is statistically independent. A measurement campaign in the CERN PSB was carried out to introduce cross-plane dependence in bunched beams in controlled conditions, in view of characterizing the LHC operational beam distributions. The results of the measurement campaign demonstrate how heavy tails can be created via coupled resonance excitation of the lattice in the presence of space charge, in accordance with predictions from the fixed line theory. The coupled resonance introduces dependence between the different planes, which persists after the resonance excitation is removed. 002913149 540__ $$aCC-BY-4.0$$bJACOW$$uhttps://creativecommons.org/licenses/by/4.0 002913149 65017 $$2SzGeCERN$$aAccelerators and Storage Rings 002913149 6531_ $$9author$$aresonance 002913149 6531_ $$9author$$adistributed 002913149 6531_ $$9author$$acoupling 002913149 6531_ $$9author$$abunching 002913149 6531_ $$9author$$asextupole 002913149 690C_ $$aARTICLE 002913149 690C_ $$aCERN 002913149 693__ $$aCERN PSB 002913149 700__ $$aAsvesta, Foteini$$uCERN 002913149 700__ $$aFranchetti, Giuliano$$uDarmstadt, GSI 002913149 700__ $$aSterbini, Guido$$uCERN 002913149 700__ $$aBartosik, Hannes$$uCERN 002913149 700__ $$aSeidel, Mike$$uPSI, Villigen$$uEcole Polytechnique, Lausanne$$vEPFL, Lausanne, Switzerland 002913149 700__ $$aAlbright, Simon$$uCERN 002913149 700__ $$aPrebibaj, Tirsi$$uCERN 002913149 773__ $$cTUPC07$$pJACoW IPAC$$qIPAC2024$$v2024$$wC24-05-19$$y2024 002913149 8564_ $$82563703$$s798396$$uhttps://cds.cern.ch/record/2913149/files/document.pdf$$yFulltext 002913149 960__ $$a13 002913149 962__ $$b2903046$$kTUPC07$$nnashville20240519 002913149 980__ $$aARTICLE 002913149 980__ $$aConferencePaper</pre></div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=bg">Търсене</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=bg">Изпращане</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=bg">Персонализиране</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=bg">Помощ</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 /> Поддръжка от <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"> Този сайт е достъпен на следните езици:<br /><span class="langinfo">Български</span>  <a href="/record/2913149/export/hm?ln=ca" class="langinfo">Català</a>  <a href="/record/2913149/export/hm?ln=de" class="langinfo">Deutsch</a>  <a href="/record/2913149/export/hm?ln=el" class="langinfo">Ελληνικά</a>  <a href="/record/2913149/export/hm?ln=en" class="langinfo">English</a>  <a href="/record/2913149/export/hm?ln=es" class="langinfo">Español</a>  <a href="/record/2913149/export/hm?ln=fr" class="langinfo">Français</a>  <a href="/record/2913149/export/hm?ln=hr" class="langinfo">Hrvatski</a>  <a href="/record/2913149/export/hm?ln=it" class="langinfo">Italiano</a>  <a href="/record/2913149/export/hm?ln=ja" class="langinfo">日本語</a>  <a href="/record/2913149/export/hm?ln=ka" class="langinfo">ქართული</a>  <a href="/record/2913149/export/hm?ln=no" class="langinfo">Norsk/Bokmål</a>  <a href="/record/2913149/export/hm?ln=pl" class="langinfo">Polski</a>  <a href="/record/2913149/export/hm?ln=pt" class="langinfo">Português</a>  <a href="/record/2913149/export/hm?ln=ru" class="langinfo">Русский</a>  <a href="/record/2913149/export/hm?ln=sk" class="langinfo">Slovensky</a>  <a href="/record/2913149/export/hm?ln=sv" class="langinfo">Svenska</a>  <a href="/record/2913149/export/hm?ln=zh_CN" class="langinfo">中文(简)</a>  <a href="/record/2913149/export/hm?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>