Accelerator Report: Lead ions take the stage

<!DOCTYPE html> <html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/ dc: http://purl.org/dc/terms/ foaf: http://xmlns.com/foaf/0.1/ og: http://ogp.me/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# schema: http://schema.org/ sioc: http://rdfs.org/sioc/ns# sioct: http://rdfs.org/sioc/types# skos: http://www.w3.org/2004/02/skos/core# xsd: http://www.w3.org/2001/XMLSchema# "> <head> <meta charset="utf-8" /> <script>var _paq = _paq || [];(function(){var u=(("https:" == document.location.protocol) ? "https://webanalytics.web.cern.ch/" : "http://webanalytics.web.cern.ch/");_paq.push(["setSiteId", "22"]);_paq.push(["setTrackerUrl", u+"matomo.php"]);_paq.push(["setDoNotTrack", 1]);if (!window.matomo_search_results_active) {_paq.push(["trackPageView"]);}_paq.push(["setIgnoreClasses", ["no-tracking","colorbox"]]);_paq.push(["enableLinkTracking"]);var d=document,g=d.createElement("script"),s=d.getElementsByTagName("script")[0];g.type="text/javascript";g.defer=true;g.async=true;g.src=u+"matomo.js";s.parentNode.insertBefore(g,s);})();</script> <meta name="keywords" content="physics, CERN, Large Hadron Collider, LHC, high-energy physics, particles, science" /> <link rel="canonical" href="https://home.cern/news/news/accelerators/accelerator-report-lead-ions-take-stage" /> <meta property="og:site_name" content="CERN" /> <meta property="og:type" content="website" /> <meta property="og:url" content="https://home.cern/news/news/accelerators/accelerator-report-lead-ions-take-stage" /> <meta property="og:title" content="Accelerator Report: Lead ions take the stage" /> <meta property="og:description" content="On 30 October at 8 a.m., the SPS delivered its final protons of the year to the North Area, marking the shift to the lead-ion physics run. To prepare for this transition, the BE departmental safety officer (DSO), with support from various experts, conducted this morning the SPS North Area lead-ion DSO test. This test involves verifying the additional safety measures required for lead-ion operations, ensuring that no protons can accidentally be directed to the North Area. The DSO test includes evaluating fault scenarios, confirming safety protocols and validating all the measures in place. Once it was completed, the lead-ion beam was extracted and directed towards the North Area, where beamline physicists are now adjusting the beam trajectories and optics to deliver high-quality lead-ion beam to the experiments. Approximately 30 hours after the last proton beam to the North Area was stopped, a radiation survey will be conducted in the early afternoon of 1 November. During this survey, radiation protection specialists will measure radiation levels along the machines (Linac4, PSB, PS and SPS). Annual comparisons of these measurements help track radiation level changes and identify areas where levels may have increased or decreased. Machine experts are then consulted to understand the potential causes of any changes. If any anomalies are detected, they can be investigated further and corrected for future runs. This approach helps to keep radiation levels as low as reasonably possible, minimising downtime and ensuring safe conditions for machine interventions following a predefined cooldown period. Over the weekend of 2 and 3 November, the final adjustments will be made to the SPS lead-ion beam production and North Area beamlines before starting the four-week lead-ion physics run in the North Area on 4 November, which will be concluded at 6 a.m. on 2 December. The lead-ion beam from the PS is also used in the PS East Area by the HEARTS (High-Energy Accelerators for Radiation Testing and Shielding) project, which will start its experiments on 11 November and will also conclude at 6 a.m. on 2 December. The lead-ion beam for the LHC is of a unique type and has been meticulously prepared over recent weeks. This involved five dedicated 10-hour sessions during which SPS proton physics was paused in order to allow expert teams to set up the LHC lead-ion beam in the SPS. This beam requires a series of 14 injections, each containing four lead-ion bunches from the PS, resulting in 56 bunches spaced by 100 ns. After an initial acceleration, a process called slip-stacking reduces the bunch spacing to 50 ns, allowing more bunches to be injected into the LHC. The beam then undergoes a final acceleration, reaching the final flat-top, after which it is extracted and injected into the LHC in either a clockwise or counterclockwise direction. The SPS display showing the LHC lead-ion production cycle. In white is the energy and in yellow the number of lead ions, clearly showing the 14 injections. The intermediate flat-top (red circle) is used to perform the slip-stacking and is followed by the acceleration to the final flat-top (green circle) where the beam is extracted. (Image: CERN) The initial set-up of lead ions in the LHC, using only a few bunches, took place over the weekend of 26 and 27 October. Currently, the LHC is colliding protons at 2.68 TeV – compared with the usual 6.8 TeV – for the proton–proton reference run, providing calibration data for the upcoming lead-ion collisions. Final adjustments for the lead-ion beam set-up in the LHC are scheduled for the coming weekend and should be concluded on 4 November, with lead-ion collisions for physics set to begin later that day. The LHC lead-ion run will conclude at 6 a.m. on 25 November, with the injector complex remaining operational for another week to provide beam to the experimental facilities. The LHC display showing the proton–proton reference runs. In the bottom left-hand graph in blue and red are the clockwise and counterclockwise proton beams. In black is the energy, with the right-hand scale indicating 2.68 TeV. The small spike at the end of the flat-top, which occurs after the beams are dumped and goes up to 3.5 TeV, is required to ensure that the magnetic conditions of the LHC machine are correct for the next beam to be injected. (Image: CERN) As mentioned in my previous report, additional enhancements to the lead-ion beam’s performance as well as efforts to reduce background, particularly for the ALICE experiment, are essential. Last weekend offered the first promising signs of these improvements, and there is much anticipation for the final outcomes with full beams. Next week will bring further answers, hopefully confirming these positive developments." /> <meta property="og:image" content="https://cds.cern.ch/images//file?size=medium" /> <meta name="twitter:card" content="summary_large_image" /> <meta name="twitter:description" content="On 30 October at 8 a.m., the SPS delivered its final protons of the year to the North Area, marking the shift to the lead-ion physics run. To prepare for this transition, the BE departmental safety officer (DSO), with support from various experts, conducted this morning the SPS North Area lead-ion DSO test. This test involves verifying the additional safety measures required for lead-ion operations, ensuring that no protons can accidentally be directed to the North Area. The DSO test includes evaluating fault scenarios, confirming safety protocols and validating all the measures in place. Once it was completed, the lead-ion beam was extracted and directed towards the North Area, where beamline physicists are now adjusting the beam trajectories and optics to deliver high-quality lead-ion beam to the experiments. Approximately 30 hours after the last proton beam to the North Area was stopped, a radiation survey will be conducted in the early afternoon of 1 November. During this survey, radiation protection specialists will measure radiation levels along the machines (Linac4, PSB, PS and SPS). Annual comparisons of these measurements help track radiation level changes and identify areas where levels may have increased or decreased. Machine experts are then consulted to understand the potential causes of any changes. If any anomalies are detected, they can be investigated further and corrected for future runs. This approach helps to keep radiation levels as low as reasonably possible, minimising downtime and ensuring safe conditions for machine interventions following a predefined cooldown period. Over the weekend of 2 and 3 November, the final adjustments will be made to the SPS lead-ion beam production and North Area beamlines before starting the four-week lead-ion physics run in the North Area on 4 November, which will be concluded at 6 a.m. on 2 December. The lead-ion beam from the PS is also used in the PS East Area by the HEARTS (High-Energy Accelerators for Radiation Testing and Shielding) project, which will start its experiments on 11 November and will also conclude at 6 a.m. on 2 December. The lead-ion beam for the LHC is of a unique type and has been meticulously prepared over recent weeks. This involved five dedicated 10-hour sessions during which SPS proton physics was paused in order to allow expert teams to set up the LHC lead-ion beam in the SPS. This beam requires a series of 14 injections, each containing four lead-ion bunches from the PS, resulting in 56 bunches spaced by 100 ns. After an initial acceleration, a process called slip-stacking reduces the bunch spacing to 50 ns, allowing more bunches to be injected into the LHC. The beam then undergoes a final acceleration, reaching the final flat-top, after which it is extracted and injected into the LHC in either a clockwise or counterclockwise direction. The SPS display showing the LHC lead-ion production cycle. In white is the energy and in yellow the number of lead ions, clearly showing the 14 injections. The intermediate flat-top (red circle) is used to perform the slip-stacking and is followed by the acceleration to the final flat-top (green circle) where the beam is extracted. (Image: CERN) The initial set-up of lead ions in the LHC, using only a few bunches, took place over the weekend of 26 and 27 October. Currently, the LHC is colliding protons at 2.68 TeV – compared with the usual 6.8 TeV – for the proton–proton reference run, providing calibration data for the upcoming lead-ion collisions. Final adjustments for the lead-ion beam set-up in the LHC are scheduled for the coming weekend and should be concluded on 4 November, with lead-ion collisions for physics set to begin later that day. The LHC lead-ion run will conclude at 6 a.m. on 25 November, with the injector complex remaining operational for another week to provide beam to the experimental facilities. The LHC display showing the proton–proton reference runs. In the bottom left-hand graph in blue and red are the clockwise and counterclockwise proton beams. In black is the energy, with the right-hand scale indicating 2.68 TeV. The small spike at the end of the flat-top, which occurs after the beams are dumped and goes up to 3.5 TeV, is required to ensure that the magnetic conditions of the LHC machine are correct for the next beam to be injected. (Image: CERN) As mentioned in my previous report, additional enhancements to the lead-ion beam’s performance as well as efforts to reduce background, particularly for the ALICE experiment, are essential. Last weekend offered the first promising signs of these improvements, and there is much anticipation for the final outcomes with full beams. Next week will bring further answers, hopefully confirming these positive developments." /> <meta name="twitter:site" content="@cern" /> <meta name="twitter:title" content="Accelerator Report: Lead ions take the stage" /> <meta name="twitter:image" content="https://cds.cern.ch/images//file?size=medium" /> <meta name="Generator" content="Drupal 10 (https://www.drupal.org)" /> <meta name="MobileOptimized" content="width" /> <meta name="HandheldFriendly" content="true" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="icon" href="/sites/default/themes/custom/cernpublic/favicon.ico" type="image/vnd.microsoft.icon" /> <link rel="alternate" hreflang="en" href="https://home.cern/news/news/accelerators/accelerator-report-lead-ions-take-stage" /> <link rel="alternate" hreflang="fr" href="https://home.cern/fr/news/news/accelerators/accelerator-report-lead-ions-take-stage" /> <title>Accelerator Report: Lead ions take the stage | CERN</title> <link rel="stylesheet" media="all" href="/modules/custom/cern-loading/css/cern_loading.css?sr5yaa" /> <link rel="stylesheet" media="all" href="//framework.web.cern.ch/framework/3.0/js/owlcarousel/css/owl.carousel.css" /> <link rel="stylesheet" media="all" href="//framework.web.cern.ch/framework/3.0/js/owlcarousel/css/owl.theme.default.css" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/align.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/fieldgroup.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/container-inline.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/clearfix.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/details.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/hidden.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/item-list.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/js.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/nowrap.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/position-container.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/reset-appearance.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/resize.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/system-status-counter.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/system-status-report-counters.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/system-status-report-general-info.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/system/css/components/tablesort.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/misc/components/progress.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/core/modules/views/css/views.module.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/modules/custom/cern-components/patterns/molecules/preview-card/css/component-preview-card.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/modules/custom/cern-components/patterns/molecules/news-display/css/news-display.component.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/modules/custom/cern-toolbar/assets/css/screen.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/modules/custom/cern-toolbar/assets/css/cookieconsent.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/modules/custom/cern-components/patterns/molecules/menu/css/menu.component.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/modules/contrib/paragraphs/css/paragraphs.unpublished.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/files/color/cernpublic-ac827e9a/colors.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/base.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/layout.css?sr5yaa" /> <link rel="stylesheet" media="all" href="//framework.web.cern.ch/framework/3.0/js/prism/prism.css" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/footer.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/header.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/pagination.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/forms.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/fields.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/dropdown.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/progress.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/accordion.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/components/social-sharing.css?sr5yaa" /> <link rel="stylesheet" media="all" href="//framework.web.cern.ch/framework/3.0/js/colorbox/colorbox.css" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/theme.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/cookies.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/viewspage.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/faq-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/agenda-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/news-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/stories-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/resources-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/taxonomies-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/search-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/common-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernbase/css/views/generic-views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernpublic/css/layout.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernpublic/css/overrides.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernpublic/css/header.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernpublic/css/views.css?sr5yaa" /> <link rel="stylesheet" media="all" href="/sites/default/themes/custom/cernpublic/css/blocks.css?sr5yaa" /> <link rel="preload" href="//framework.web.cern.ch/framework/3.0/images/loader.gif" as="image"> </head> <body class="page-node-191233 page-node-type-news_page cern-theme-on path-node page-node-type-news-page has-glyphicons"> <a href="#main-content" class="visually-hidden focusable skip-link"> Skip to main content </a> <div id="cern-global-loading-layout"><span><span></span></span><span></span></div><div id="cern-toolbar" role="group" aria-label="CERN Toolbar" class="user-not-authenticated"> <h1> <a href="//home.cern" title="CERN"> CERN <span>Accelerating science</span> </a> </h1> <ul> <li class="signin"> <div class="item-list item-list-length-1"> <ul class="cern-signedin toolbar-submenu"><li class="cern-account-links"><a href="https://home.cern/user/login?destination=news/news/accelerators/accelerator-report-lead-ions-take-stage" class="cern-account cern-signin cern-single-mobile-signin">Sign in</a></li></ul> </div> </li> <li><a href="//cern.ch/directory" class="cern-directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div> <div class="dialog-off-canvas-main-canvas" data-off-canvas-main-canvas> <header role="banner"> <div class="header-wrapper"> <div class="site-info col-xs-12 col-sm-2 col-md-3 col-lg-4"> <div class="site-info__logo col-lg-3 col-md-3 col-sm-3"> <a href="/" title="Home" rel="home"> <img src="/sites/default/files/logo/cern-logo.png" alt="home"/> </a> </div> <div class="site-info__text col-lg-9 col-md-9 col-sm-0 col-xs-9"> </div> </div> <div class="site-nav col-xs-12 col-sm-10 col-md-9 col-lg-8"> <div class="region region-header"> <section id="block-cernmegamenu" class="block block-block-content block-block-content51503ac3-f37a-4ef6-9d9e-34cac1020012 clearfix"> <div class="field field--name-field-b-menu field--type-entity-reference-revisions field--label-hidden field--item"><nav role="navigation" aria-labelledby="block-mainnavigation-menu" id="block-mainnavigation" class="block-mainnavigation-cern-megamenu"> <nav class="navbar navbar-default"> <div class="container-fluid">  <div class="navbar-header"> <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div>  <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> <ul class="nav navbar-nav"> <li class="cern-dropdown"> <a class="dropdown-toggle"> About </a> <div class="cern-dropdown-menu row"> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <div class="block-custom-wrapper block-content block-content--type-basic block-content--view-mode-default ds-1col clearfix"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><h2>CERN</h2> <p>At CERN, we probe the fundamental structure of particles that make up everything around us. We do so using the world's largest and most complex scientific instruments.</p> <p class="cern-btn"><a class="cern-btn" href="/about">Know more</a></p> </div> </div> </div> <div class="col-xs-0 col-sm-0 col-md-8 col-lg-8 col-item-megamenu"> <div class="row"> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/about/who-we-are" data-drupal-link-system-path="node/5898">Who we are</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/who-we-are/our-mission" data-drupal-link-system-path="node/5273">Our Mission</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/who-we-are/our-governance" data-drupal-link-system-path="node/5277">Our Governance</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/who-we-are/our-governance/member-states" data-drupal-link-system-path="node/5278">Our Member States</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/who-we-are/our-history" data-drupal-link-system-path="node/5028">Our History</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/who-we-are/our-people" data-drupal-link-system-path="node/5430">Our People</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/about/what-we-do" data-drupal-link-system-path="node/5899">What we do</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/what-we-do/fundamental-research" data-drupal-link-system-path="node/5920">Fundamental research</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/what-we-do/our-impact" data-drupal-link-system-path="node/5435">Contribute to society</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/what-we-do/environmentally-responsible-research" data-drupal-link-system-path="node/185640">Environmentally responsible research</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/what-we-do/bring-nations-together" data-drupal-link-system-path="node/157979">Bring nations together</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/about/what-we-do/inspire-educate" data-drupal-link-system-path="node/9390">Inspire and educate</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources/faqs" data-drupal-link-system-path="resources/faqs">Fast facts and FAQs</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0 cernmenu-level-last "> <a href="/about/key-achievements" data-drupal-link-system-path="node/5497">Key Achievements</a> </p> </li> </ul> <div class="block-custom-wrapper block-content block-content--type-basic block-content--view-mode-default ds-1col clearfix"> <div class="field field--name-field-visible-title field--type-string field--label-hidden field--item"> <p>Key achievements submenu</p> </div> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><ul class="cern-submenu custom-block-submenu"> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/science/physics/higgs-boson">The Higgs Boson</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/science/physics/w-boson-sunshine-and-stardust">The W boson</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/science/physics/z-boson">The Z boson</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/science/accelerators/large-hadron-collider">The Large Hadron Collider</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/science/computing/birth-web">The Birth of the web</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/science/physics/antimatter">Antimatter</a></p> </li> </ul> </div> </div> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> </div> </div> </div> <div class="close-cern-dropdown"></div> </div> </li> <li class="cern-dropdown"> <a class="dropdown-toggle"> News </a> <div class="cern-dropdown-menu row"> <div class="col-xs-12 col-sm-12 col-md-6 col-lg-6 col-item-megamenu"> <div class="views-element-container form-group"><div class="views-element-container form-group"> <div class="view view-cern-news-menu-featured view-id-cern_news_menu_featured view-display-id-block_1 js-view-dom-id-b3368385c1ce8f6ffee55be9b0e7e2e2da980cfdebb46f6df1a004abf981b6de cern-view-display-block cern-view-display-block_1 clearfix"> <div class="view-header"> Featured news, updates, stories, opinions, announcements </div> <div class="view-content clearfix"> <div class="views-row"> <div data-history-node-id="191722" id="preview-card" class="component-preview-cards box-pattern" style="background:url('/sites/default/files/styles/large/public/2025-01/Amanda%20Metzger_2%20%281%29.jpg?itok=ck8Q17Fu') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-01/Amanda%20Metzger_2%20%281%29.jpg?itok=ck8Q17Fu" class="component-preview-cards box-pattern"> <a class="box-link" target="" href="/news/news/cern/swiss-artist-amanda-e-metzger-selected-connect-residency"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/cern/swiss-artist-amanda-e-metzger-selected-connect-residency" hreflang="en" title="Swiss artist Amanda E. Metzger selected for the Connect residency"> <span> Swiss artist Amanda E. Metzger selected for t... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> At CERN </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2025-01-30T13:00:00Z">30 January, 2025</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191421" id="preview-card--2" class="component-preview-cards box-pattern" style="background:url('/sites/default/files/styles/large/public/2024-12/202204-064_375.jpg?itok=nP87BzBh') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-12/202204-064_375.jpg?itok=nP87BzBh" class="component-preview-cards box-pattern"> <a class="box-link" target="" href="/news/press-release/physics/cloud-experiment-resolves-puzzle-new-aerosol-particles-upper-troposphere"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/press-release/physics/cloud-experiment-resolves-puzzle-new-aerosol-particles-upper-troposphere" hreflang="en" title="CLOUD experiment resolves puzzle of new aerosol particles in upper troposphere"> <span> CLOUD experiment resolves puzzle of new aeros... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Physics </div> <div class="preview-card__category" style="color:"> Press release </div> <div class="preview-card__date" style="color:"> <time datetime="2024-12-04T16:00:10Z">4 December, 2024</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191397" id="preview-card--3" class="component-preview-cards box-pattern" style="background:url('/sites/default/files/styles/large/public/2024-11/Montclar.jpg?itok=1v3MFmuM') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-11/Montclar.jpg?itok=1v3MFmuM" class="component-preview-cards box-pattern"> <a class="box-link" target="" href="/news/news/engineering/cern-signs-long-term-solar-power-agreements"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/engineering/cern-signs-long-term-solar-power-agreements" hreflang="en" title="CERN signs long-term solar power agreements"> <span> CERN signs long-term solar power agreements </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Engineering </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-11-29T15:13:12Z">29 November, 2024</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191408" id="preview-card" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2024-11/Poster%20Formats_FR4_0.jpg?itok=yYzgz9Jw') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-11/Poster%20Formats_FR4_0.jpg?itok=yYzgz9Jw" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/cern/cern-launches-resonance-new-arts-collaboration-republic-and-canton-geneva-and-city"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/cern/cern-launches-resonance-new-arts-collaboration-republic-and-canton-geneva-and-city" hreflang="en" title="CERN launches Resonance, a new arts collaboration with the Republic and Canton of Geneva and the City of Geneva"> <span> CERN launches Resonance, a new arts collabora... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> At CERN </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-11-28T09:30:00Z">28 November, 2024</time> </div> </div> </div> </div> </div> </div> </div> <div class="view-footer"> <p class="cern-btn"><a class="cern-btn" href="/news?audience=23">Latest news</a></p> </div> </div> </div> </div> </div> <div class="col-xs-0 col-sm-0 col-md-6 col-lg-6 col-item-megamenu"> <div class="row"> <div class="col-xs-12 col-sm-12 col-md-6 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/news?audience=23" data-drupal-link-query="{"audience":"23"}" data-drupal-link-system-path="news">News</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?topic=1114" data-drupal-link-query="{"topic":"1114"}" data-drupal-link-system-path="news">Accelerators</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?topic=1118" data-drupal-link-query="{"topic":"1118"}" data-drupal-link-system-path="news">At CERN</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?topic=1116" data-drupal-link-query="{"topic":"1116"}" data-drupal-link-system-path="news">Computing</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?topic=1115" data-drupal-link-query="{"topic":"1115"}" data-drupal-link-system-path="news">Engineering</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?topic=1117" data-drupal-link-query="{"topic":"1117"}" data-drupal-link-system-path="news">Experiments</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?topic=1119" data-drupal-link-query="{"topic":"1119"}" data-drupal-link-system-path="news">Knowledge sharing</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?topic=1113" data-drupal-link-query="{"topic":"1113"}" data-drupal-link-system-path="news">Physics</a> </p> </li> </ul> </li> </ul> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0 cernmenu-level-last "> <a href="/events" data-drupal-link-system-path="events">Events</a> </p> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-6 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/cern-community" data-drupal-link-system-path="node/5872">CERN Community</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?audience=24" data-drupal-link-query="{"audience":"24"}" data-drupal-link-system-path="news">News and announcements</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?type=45" data-drupal-link-query="{"type":"45"}" data-drupal-link-system-path="news">Official communications</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/tags/events-cern" data-drupal-link-system-path="taxonomy/term/494">Events</a> </p> </li> </ul> </li> </ul> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/scientists" data-drupal-link-system-path="node/5827">Scientists</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/news?audience=19" data-drupal-link-query="{"audience":"19"}" data-drupal-link-system-path="news">News</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-6 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0 cernmenu-level-last "> <a href="/press" data-drupal-link-system-path="node/5032">Press Room</a> </p> </li> </ul> <div class="block-custom-wrapper block-content block-content--type-basic block-content--view-mode-default ds-1col clearfix"> <div class="field field--name-field-visible-title field--type-string field--label-hidden field--item"> <p>Press Room submenu</p> </div> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><ul class="cern-submenu custom-block-submenu"> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/news?audience=22">Media News</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/press/resources">Resources</a></p> </li> <li> <p class="cernmenu-level-1 cernmenu-level-last "><a href="/press/contact">Contact</a></p> </li> </ul> </div> </div> </div> </div> </div> <div class="close-cern-dropdown"></div> </div> </li> <li class="cern-dropdown"> <a class="dropdown-toggle"> Science </a> <div class="cern-dropdown-menu row"> <div class="col-xs-12 col-sm-12 col-md-3 col-lg-3 col-item-megamenu"> <div class="block-custom-wrapper block-content block-content--type-basic block-content--view-mode-default ds-1col clearfix"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><h2>Science</h2> <p><img alt="img" data-entity-type="file" data-entity-uuid="948207c4-d66f-492e-9f8a-3e9a1aa3b55f" src="/sites/default/files/inline-images/pkatyaya/1209226_01-A5-at-72-dpi.jpg" width="561" height="377" loading="lazy"></p> <p>The research programme at CERN covers topics from kaons to cosmic rays, and from the Standard Model to supersymmetry</p> <p class="cern-btn"><a href="/science">Know more</a></p> </div> </div> </div> <div class="col-xs-0 col-sm-0 col-md-9 col-lg-9 col-item-megamenu"> <div class="row"> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/science/physics" data-drupal-link-system-path="node/5298">Physics</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/physics/antimatter" data-drupal-link-system-path="node/5026">Antimatter</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/physics/dark-matter" data-drupal-link-system-path="node/497">Dark matter</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/physics/early-universe" data-drupal-link-system-path="node/499">The early universe</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/physics/higgs-boson" data-drupal-link-system-path="node/182651">The Higgs boson</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/physics/standard-model" data-drupal-link-system-path="node/496">The Standard Model</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/physics" class="plus-more-link" data-drupal-link-system-path="node/5298">+ More</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/science/accelerators" data-drupal-link-system-path="node/5038">Accelerators</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/accelerators/accelerator-complex" data-drupal-link-system-path="node/18036">CERN's accelerators</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/accelerators/antiproton-decelerator" data-drupal-link-system-path="node/428">The Antiproton Decelerator</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/accelerators/large-hadron-collider" data-drupal-link-system-path="node/432">The Large Hadron Collider</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/accelerators/high-luminosity-lhc" data-drupal-link-system-path="node/5248">High-Luminosity LHC</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/accelerators" class="plus-more-link" data-drupal-link-system-path="node/5038">+ More</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/science/engineering" data-drupal-link-system-path="node/5304">Engineering</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/engineering/accelerating-radiofrequency-cavities" data-drupal-link-system-path="node/455">Accelerating: radiofrequency cavities</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/engineering/pulling-together-superconducting-electromagnets" data-drupal-link-system-path="node/452">Steering and focusing: magnets and superconductivity</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/engineering/vacuum-empty-interstellar-space" data-drupal-link-system-path="node/454">Circulating: ultra-high vacuum</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/engineering/cryogenics-low-temperatures-high-performance" data-drupal-link-system-path="node/451">Cooling: cryogenic systems</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/engineering/powering-cern" data-drupal-link-system-path="node/453">Powering: energy at CERN</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/engineering" class="plus-more-link" data-drupal-link-system-path="node/5304">+ More</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/science/computing" data-drupal-link-system-path="node/5732">Computing</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/computing/data-centre" data-drupal-link-system-path="node/5733">The CERN Data Centre</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/computing/grid" data-drupal-link-system-path="node/5736">The Worldwide LHC Computing Grid</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/computing/cern-openlab" data-drupal-link-system-path="node/5759">CERN openlab</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/computing/open-source-open-science" data-drupal-link-system-path="node/5747">Open source for open science</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/computing/birth-web" data-drupal-link-system-path="node/5762">The birth of the web</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/computing" class="plus-more-link" data-drupal-link-system-path="node/5732">+ More</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <a href="/science/experiments" data-drupal-link-system-path="node/5303">Experiments</a> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/experiments/alice" data-drupal-link-system-path="node/470">ALICE</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/experiments/atlas" data-drupal-link-system-path="node/471">ATLAS</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/experiments/cms" data-drupal-link-system-path="node/472">CMS</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/experiments/lhcb" data-drupal-link-system-path="node/473">LHCb</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/science/experiments" class="plus-more-link" data-drupal-link-system-path="node/5303">+ More</a> </p> </li> </ul> </li> </ul> </div> </div> </div> <div class="close-cern-dropdown"></div> </div> </li> <li class="cern-dropdown"> <a class="dropdown-toggle"> Resources </a> <div class="cern-dropdown-menu row"> <div class="col-xs-12 col-sm-12 col-md-6 col-lg-6 col-item-megamenu"> <div class="views-element-container form-group"> <div class="view view-resource-menu-content view-id-resource_menu_content view-display-id-block_1 js-view-dom-id-7ed400bd3b15e50a0a890f8d9190a0885af34f45c51bfd38962a8400e971ca78 cern-view-display-block cern-view-display-block_1 clearfix"> <h1 class="mb-3 mt-3 text-center">Featured resources</h1> <div class="view-content clearfix"> <div class="views-row"> <div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191708" id="preview-card--2" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2025-01/CERN-Courier-Jan-Feb-2025.png?itok=eBAOHhv7') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-01/CERN-Courier-Jan-Feb-2025.png?itok=eBAOHhv7" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/resources/courier/physics/cern-courier-janfeb-2025"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="component-preview-cards__category-icon-vocabulary" data-icon="^"></div> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/resources/courier/physics/cern-courier-janfeb-2025" hreflang="en" title="CERN Courier Jan/Feb 2025"> <span> CERN Courier Jan/Feb 2025 </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Courier </div> <div class="preview-card__category" style="color:"> Physics </div> <div class="preview-card__date" style="color:"> <time datetime="2025-01-01T10:07:31Z">1 January, 2025</time> </div> </div> </div> </div> </div> </span></div> </div> <div class="views-row"> <div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="5047" id="preview-card--3" class="component-preview-cards box-pattern news_page" style="background:url('//cds.cern.ch/images/CERN-PHOTO-202105-067-19/file?size=medium') no-repeat center center / cover" data-background="//cds.cern.ch/images/CERN-PHOTO-202105-067-19/file?size=medium" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/resources/image/accelerators/high-luminosity-lhc-gallery"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="component-preview-cards__category-icon-vocabulary" data-icon="z"></div> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/resources/image/accelerators/high-luminosity-lhc-gallery" hreflang="en" title="High-Luminosity LHC images"> <span> High-Luminosity LHC images </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Image </div> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__date" style="color:"> <time datetime="2018-06-20T12:37:57Z">20 June, 2018</time> </div> </div> </div> </div> </div> </span></div> </div> <div class="views-row"> <div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="5179" id="preview-card--4" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2022-05/FAQ-LHC-EN-cover-min_0_0.JPG?itok=6kjMukRO') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2022-05/FAQ-LHC-EN-cover-min_0_0.JPG?itok=6kjMukRO" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/resources/brochure/knowledge-sharing/lhc-facts-and-figures"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="component-preview-cards__category-icon-vocabulary" data-icon="^"></div> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/resources/brochure/knowledge-sharing/lhc-facts-and-figures" hreflang="en" title="LHC Facts and Figures"> <span> LHC Facts and Figures </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Brochure </div> <div class="preview-card__category" style="color:"> Knowledge sharing </div> <div class="preview-card__date" style="color:"> <time datetime="2022-05-10T10:00:00Z">10 May, 2022</time> </div> </div> </div> </div> </div> </span></div> </div> </div> <div class="view-footer"> <p class="cern-btn"><a class="cern-btn" href="/resources">See all resources</a></p> </div> </div> </div> </div> <div class="col-xs-0 col-sm-0 col-md-6 col-lg-6 col-item-megamenu"> <div class="row"> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <span>By Topic</span> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?topic=1114" data-drupal-link-query="{"topic":"1114"}" data-drupal-link-system-path="resources">Accelerators</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?topic=1118" data-drupal-link-query="{"topic":"1118"}" data-drupal-link-system-path="resources">At CERN</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?topic=1116" data-drupal-link-query="{"topic":"1116"}" data-drupal-link-system-path="resources">Computing</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?topic=1115" data-drupal-link-query="{"topic":"1115"}" data-drupal-link-system-path="resources">Engineering</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?topic=1117" data-drupal-link-query="{"topic":"1117"}" data-drupal-link-system-path="resources">Experiments</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?topic=1119" data-drupal-link-query="{"topic":"1119"}" data-drupal-link-system-path="resources">Knowledge sharing</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?topic=1113" data-drupal-link-query="{"topic":"1113"}" data-drupal-link-system-path="resources">Physics</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <span>By format</span> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?type=62" data-drupal-link-query="{"type":"62"}" data-drupal-link-system-path="resources">360 image</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?type=53" data-drupal-link-query="{"type":"53"}" data-drupal-link-system-path="resources">Annual report</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?type=56" data-drupal-link-query="{"type":"56"}" data-drupal-link-system-path="resources">Brochure</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources/bulletin/cern/cern-bulletin" data-drupal-link-system-path="node/5055">Bulletin</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?type=52" data-drupal-link-query="{"type":"52"}" data-drupal-link-system-path="resources">Courier</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?type=59" data-drupal-link-query="{"type":"59"}" data-drupal-link-system-path="resources">Image</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?type=61" data-drupal-link-query="{"type":"61"}" data-drupal-link-system-path="resources">Video</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources" class="plus-more-link" data-drupal-link-system-path="resources">+ More</a> </p> </li> </ul> </li> </ul> </div> <div class="col-xs-12 col-sm-12 col-md-4 col-lg-4 col-item-megamenu"> <ul class="cern-submenu"> <li> <p class="h2 cernmenu-level-0"> <span>By audience</span> </p> <ul class=""> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?audience=24" data-drupal-link-query="{"audience":"24"}" data-drupal-link-system-path="resources">CERN community</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?audience=21" data-drupal-link-query="{"audience":"21"}" data-drupal-link-system-path="resources">Educators</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?audience=23" data-drupal-link-query="{"audience":"23"}" data-drupal-link-system-path="resources">General public</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?audience=17" data-drupal-link-query="{"audience":"17"}" data-drupal-link-system-path="resources">Industry</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources/audience/resources-topic" data-drupal-link-system-path="node/5436">Media</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?audience=19" data-drupal-link-query="{"audience":"19"}" data-drupal-link-system-path="resources">Scientists</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources?audience=20" data-drupal-link-query="{"audience":"20"}" data-drupal-link-system-path="resources">Students</a> </p> </li> <li> <p class=" cernmenu-level-1 cernmenu-level-last "> <a href="/resources" class="plus-more-link" data-drupal-link-system-path="resources">+ More</a> </p> </li> </ul> </li> </ul> </div> </div> </div> <div class="close-cern-dropdown"></div> </div> </li> <li class="cern-dropdown cern-menu-search"> <a href="#" class="dropdown-toggle cern-menu-item-search">search</a> <div class="cern-dropdown-menu row"> <div class="close-cern-dropdown"></div> <div class="col-md-offset-2 col-md-8 cern-menu-content-search"> <span class="placeholder-of-search hidden d-none">E.G. BIRTH OF WEB, LHC PAGE 1, BULLETIN...</span> <span class="placeholder-of-search-mobile hidden d-none">E.G. BIRTH OF WEB, LHC...</span> <div class="search-block-form block block-search block-search-form-block" data-drupal-selector="search-block-form" role="search"> <form action="/search/node" method="get" id="search-block-form" accept-charset="UTF-8"> <div class="form-item js-form-item form-type-search js-form-type-search form-item-keys js-form-item-keys form-no-label form-group"> <label for="edit-keys" class="control-label sr-only">Search</label> <div class="input-group"><input title="Enter the terms you wish to search for." data-drupal-selector="edit-keys" class="form-search form-control" placeholder="Search" type="search" id="edit-keys" name="keys" value="" size="15" maxlength="128" data-toggle="tooltip" /><span class="input-group-btn"><button type="submit" value="Search" class="button js-form-submit form-submit btn-primary btn icon-only"><span class="sr-only">Search</span><span class="icon glyphicon glyphicon-search" aria-hidden="true"></span></button></span></div> </div> <div class="form-actions form-group js-form-wrapper form-wrapper" data-drupal-selector="edit-actions" id="edit-actions"></div> </form> </div> </div> </div> </li> <li class="dropdown cern-menu-lang-switcher"> <a class="dropdown-toggle" data-toggle="dropdown" aria-expanded="true"> <span class="separator">|</span> en <span class="caret"></span> </a> <ul class="dropdown-menu"> <li><section class="language-switcher-language-url block block-language block-language-blocklanguage-interface clearfix" role="navigation"> <ul class="links"><li hreflang="en" data-drupal-link-system-path="node/191233" class="en is-active" aria-current="page"><a href="/news/news/accelerators/accelerator-report-lead-ions-take-stage" class="language-link is-active" hreflang="en" data-drupal-link-system-path="node/191233" aria-current="page">en</a></li><li hreflang="fr" data-drupal-link-system-path="node/191233" class="fr"><a href="/fr/news/news/accelerators/accelerator-report-lead-ions-take-stage" class="language-link" hreflang="fr" data-drupal-link-system-path="node/191233">fr</a></li></ul> </section> </li> </ul> </li> </ul> </div>  </div>  </nav> </nav> </div> </section> </div> </div> </div> </div> </header> <main role="main"> <a id="main-content" tabindex="-1"></a> <div class="container cern-page-display-page cern-page-display-news_page"> <div class="has-right-column wrapper-center col-md-9 col-sm-12 col-xs-12"> <div class="region region-content"> <div data-drupal-messages-fallback class="hidden"></div> <div data-drupal-messages-fallback class="hidden"></div> <div class="row mt-2"> <div class="col-md-12 news-node-full-content-first-breadcrumbs"> <a href="/news"> News </a> <a href="/news?type=36 "> News </a> <a href="/news?type=36 &topic=1114 "> Topic: Accelerators </a> </div> <div class="col-md-12"> <hr class="news-page-hr-separator"/> </div> </div> <div class="row news-node-center-content clearfix"> <div class="col-md-12 news-node-full-content-left"> <div class="news-node-full-content-view-language mt-1 mb-1"> <p>Voir en</p> <a href="/fr/news/news/accelerators/accelerator-report-lead-ions-take-stage">français</a> </div> <h1 class="news-node-full-content-title mt-0"> Accelerator Report: Lead ions take the stage </h1> <p class="news-node-full-content-strap"> As the LHC and SPS wrap up their 2024 proton run, teams are making final preparations for the lead-ion physics run starting on 4 November </p> <div class="news-node-full-content-created-date-author"> <p class="news-node-full-content-created_date"> <time datetime="2024-10-31T12:32:00Z">31 October, 2024</time> </p> <p class="news-node-full-content-pipe ml-1 mr-1"> | </p> <p class="news-node-full-content-author"> By <a href="/authors/rende-steerenberg" hreflang="en">Rende Steerenberg</a> </p> </div> <div class="news-node-full-content-image mt-2"> </div> <div class="news-node-full-content-body clearfix full-html-markup full-text-animation"> <p style="margin-bottom:11px">On 30 October at 8 a.m., the SPS delivered its final protons of the year to the North Area, marking the shift to the lead-ion physics run.</p> <p>To prepare for this transition, the BE departmental safety officer (DSO), with support from various experts, conducted this morning the SPS North Area lead-ion DSO test. This test involves verifying the additional safety measures required for lead-ion operations, ensuring that no protons can accidentally be directed to the North Area. The DSO test includes evaluating fault scenarios, confirming safety protocols and validating all the measures in place. Once it was completed, the lead-ion beam was extracted and directed towards the North Area, where beamline physicists are now adjusting the beam trajectories and optics to deliver high-quality lead-ion beam to the experiments.</p> <p>Approximately 30 hours after the last proton beam to the North Area was stopped, a radiation survey will be conducted in the early afternoon of 1 November. During this survey, radiation protection specialists will measure radiation levels along the machines (Linac4, PSB, PS and SPS). Annual comparisons of these measurements help track radiation level changes and identify areas where levels may have increased or decreased. Machine experts are then consulted to understand the potential causes of any changes. If any anomalies are detected, they can be investigated further and corrected for future runs. This approach helps to keep radiation levels as low as reasonably possible, minimising downtime and ensuring safe conditions for machine interventions following a predefined cooldown period.</p> <p>Over the weekend of 2 and 3 November, the final adjustments will be made to the SPS lead-ion beam production and North Area beamlines before starting the four-week lead-ion physics run in the North Area on 4 November, which will be concluded at 6 a.m. on 2 December.</p> <p>The lead-ion beam from the PS is also used in the PS East Area by the <a href="https://home.cern/news/news/knowledge-sharing/hearts-innovates-foster-european-access-space">HEARTS</a> (High-Energy Accelerators for Radiation Testing and Shielding) project, which will start its experiments on 11 November and will also conclude at 6 a.m. on 2 December.</p> <p>The lead-ion beam for the LHC is of a unique type and has been meticulously prepared over recent weeks. This involved five dedicated 10-hour sessions during which SPS proton physics was paused in order to allow expert teams to set up the LHC lead-ion beam in the SPS. This beam requires a series of 14 injections, each containing four lead-ion bunches from the PS, resulting in 56 bunches spaced by 100 ns. After an initial acceleration, a process called <a href="https://home.cern/news/news/accelerators/accelerator-report-getting-lead-ions-ready-physics">slip-stacking</a> reduces the bunch spacing to 50 ns, allowing more bunches to be injected into the LHC. The beam then undergoes a final acceleration, reaching the final flat-top, after which it is extracted and injected into the LHC in either a clockwise or counterclockwise direction.</p> <figure class="cds-image" id="CERN-HOMEWEB-PHO-2024-073-1"><a href="//cds.cern.ch/images/CERN-HOMEWEB-PHO-2024-073-1" title="View on CDS"><img alt="home.cern,Accelerators" src="//cds.cern.ch/images/CERN-HOMEWEB-PHO-2024-073-1/file?size=large"></a> <figcaption>The SPS display showing the LHC lead-ion production cycle. In white is the energy and in yellow the number of lead ions, clearly showing the 14 injections. The intermediate flat-top (red circle) is used to perform the slip-stacking and is followed by the acceleration to the final flat-top (green circle) where the beam is extracted.<span> (Image: CERN)</span></figcaption></figure> <p>The initial set-up of lead ions in the LHC, using only a few bunches, took place over the weekend of 26 and 27 October. Currently, the LHC is colliding protons at 2.68 TeV – compared with the usual 6.8 TeV – for the proton–proton reference run, providing calibration data for the upcoming lead-ion collisions. Final adjustments for the lead-ion beam set-up in the LHC are scheduled for the coming weekend and should be concluded on 4 November, with lead-ion collisions for physics set to begin later that day. The LHC lead-ion run will conclude at 6 a.m. on 25 November, with the injector complex remaining operational for another week to provide beam to the experimental facilities.</p> <figure class="cds-image" id="CERN-HOMEWEB-PHO-2024-073-2"><a href="//cds.cern.ch/images/CERN-HOMEWEB-PHO-2024-073-2" title="View on CDS"><img alt="home.cern,Accelerators" src="//cds.cern.ch/images/CERN-HOMEWEB-PHO-2024-073-2/file?size=large"></a> <figcaption>The LHC display showing the proton–proton reference runs. In the bottom left-hand graph in blue and red are the clockwise and counterclockwise proton beams. In black is the energy, with the right-hand scale indicating 2.68 TeV. The small spike at the end of the flat-top, which occurs after the beams are dumped and goes up to 3.5 TeV, is required to ensure that the magnetic conditions of the LHC machine are correct for the next beam to be injected.<span> (Image: CERN)</span></figcaption></figure> <p>As mentioned in my <a href="https://home.cern/news/news/accelerators/accelerator-report-ending-2024-lhc-proton-run-high-note">previous report</a>, additional enhancements to the lead-ion beam’s performance as well as efforts to reduce background, particularly for the ALICE experiment, are essential. Last weekend offered the first promising signs of these improvements, and there is much anticipation for the final outcomes with full beams. Next week will bring further answers, hopefully confirming these positive developments.</p> </div> <div class="news-node-full-content-tags "> <a href="/tags/heavy-ion" hreflang="en">heavy ion</a><a href="/tags/sps" hreflang="en">SPS</a><a href="/tags/lhc" hreflang="en">LHC</a> </div> </div> </div> </div> </div> <div class="sidebar-right col-md-3 col-sm-12 col-xs-12"> <div class="region region-right"> <section class="views-element-container block block-views block-views-blocknews-microviews-block-12 clearfix" id="block-views-block-news-microviews-block-12"> <div class="form-group"> <div class="vertical-boxes view view-news-microviews view-id-news_microviews view-display-id-block_12 js-view-dom-id-f007b08d9ad2eb16611990675c9be361f77713073b7bae03e7b9cd79cbcdcfa2 cern-view-display-block cern-view-display-block_12 clearfix"> <div class="view-header"> <h2>Related Articles</h2> </div> <div class="view-content clearfix"> <div class="views-row"> <div data-history-node-id="191449" id="preview-card" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2024-12/antihyperhelium-4_illustration.png?itok=A-4d9JHM') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-12/antihyperhelium-4_illustration.png?itok=A-4d9JHM" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/physics/alice-finds-first-ever-evidence-antimatter-partner-hyperhelium-4"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/physics/alice-finds-first-ever-evidence-antimatter-partner-hyperhelium-4" hreflang="en" title="ALICE finds first ever evidence of the antimatter partner of hyperhelium-4"> <span> ALICE finds first ever evidence of the antima... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Physics </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-12-09T08:27:12Z">9 December, 2024</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191409" id="preview-card" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2024-11/AccRep29.11_2.png?itok=SZjWxJeZ') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-11/AccRep29.11_2.png?itok=SZjWxJeZ" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/accelerator-report-excellent-2024-lhc-run-ended-abruptly"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/accelerator-report-excellent-2024-lhc-run-ended-abruptly" hreflang="en" title="Accelerator Report: The excellent 2024 LHC run ended abruptly"> <span> Accelerator Report: The excellent 2024 LHC ru... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-11-29T08:42:41Z">29 November, 2024</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191379" id="preview-card--3" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/2024-11/202302-066_02.jpg') no-repeat center center / cover" data-background="/sites/default/files/2024-11/202302-066_02.jpg" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/record-data-lhc-2024"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/record-data-lhc-2024" hreflang="en" title="Record data for the LHC in 2024"> <span> Record data for the LHC in 2024 </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-11-25T10:07:40Z">25 November, 2024</time> </div> </div> </div> </div> </div> </div> </div> <div class="view-footer"> <a href="/news">View all news</a> </div> </div> </div> </section> </div> </div> </div> <div class="content-footer-wrapper"> <div class="has-right-column row content-footer-row container"> <div class="col-md-12 content-footer-container"> <div class="region region-contentfooter"> <section class="views-element-container block block-views block-views-blocknews-microviews-block-13 clearfix" id="block-views-block-news-microviews-block-13"> <div class="form-group"> <div class="horizontal-boxes view view-news-microviews view-id-news_microviews view-display-id-block_13 js-view-dom-id-3580406f456cb06e1897b2b4efa1144c259bc0512819f0028cfbcd415f749023 cern-view-display-block cern-view-display-block_13 clearfix"> <div class="view-header"> <h2>Also On Accelerators</h2> </div> <div class="view-content clearfix"> <div class="carousel-cern-item row"> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191804" id="preview-card--3" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2025-02/202011-176_01.jpg?itok=xQU3uzhj') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-02/202011-176_01.jpg?itok=xQU3uzhj" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/opinion/accelerators/chamonix-workshop-2025-looking-future"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/opinion/accelerators/chamonix-workshop-2025-looking-future" hreflang="en" title="Chamonix Workshop 2025: looking to the future"> <span> Chamonix Workshop 2025: looking to the future </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> Opinion </div> <div class="preview-card__author"><a href="/authors/mike-lamont-0" hreflang="en">Mike Lamont</a></div> <div class="preview-card__date" style="color:"> <time datetime="2025-02-13T10:36:16Z">13 February, 2025</time> </div> </div> </div> </div> </div> </span></div></div> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191803" id="preview-card--4" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2025-02/AccRep13.02.png?itok=h83Y8EXP') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-02/AccRep13.02.png?itok=h83Y8EXP" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/accelerator-report-first-step-towards-beam-production-linac4-source-running"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/accelerator-report-first-step-towards-beam-production-linac4-source-running" hreflang="en" title="Accelerator Report: A first step towards beam production – the Linac4 source is running again"> <span> Accelerator Report: A first step towards beam... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2025-02-13T07:00:13Z">13 February, 2025</time> </div> </div> </div> </div> </div> </span></div></div> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191729" id="preview-card--5" class="component-preview-cards box-pattern news_page" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/accelerator-report-preparing-2025-lhc-operation-and-setting-goals"></a> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/accelerator-report-preparing-2025-lhc-operation-and-setting-goals" hreflang="en" title="Accelerator Report: Preparing for 2025 LHC operation and setting goals"> <span> Accelerator Report: Preparing for 2025 LHC op... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2025-01-29T09:10:31Z">29 January, 2025</time> </div> </div> </div> </div> </div> </span></div></div> </div> <div class="carousel-cern-item row"> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191632" id="preview-card--6" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2025-01/AccRep_16.01.png?itok=QAopBq0I') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2025-01/AccRep_16.01.png?itok=QAopBq0I" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/accelerator-report-another-exciting-year-ahead"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/accelerator-report-another-exciting-year-ahead" hreflang="en" title="Accelerator Report: Another exciting year ahead"> <span> Accelerator Report: Another exciting year ahe... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2025-01-17T07:16:16Z">17 January, 2025</time> </div> </div> </div> </div> </div> </span></div></div> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191479" id="preview-card--7" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2024-12/CCC-v2022.png?itok=jVP8uUb3') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-12/CCC-v2022.png?itok=jVP8uUb3" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/accelerator-report-well-deserved-winter-break-accelerator-complex"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/accelerator-report-well-deserved-winter-break-accelerator-complex" hreflang="en" title="Accelerator Report: A well-deserved winter break for the accelerator complex"> <span> Accelerator Report: A well-deserved winter br... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-12-13T10:42:41Z">13 December, 2024</time> </div> </div> </div> </div> </div> </span></div></div> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191471" id="preview-card--8" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2024-12/listing-image_0.jpg?itok=1D_Tx7dV') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-12/listing-image_0.jpg?itok=1D_Tx7dV" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/future-circular-collider-innovation-and-economics-big-science"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/future-circular-collider-innovation-and-economics-big-science" hreflang="en" title="Future Circular Collider innovation and the economics of big science"> <span> Future Circular Collider innovation and the e... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-12-12T15:13:22Z">12 December, 2024</time> </div> </div> </div> </div> </div> </span></div></div> </div> <div class="carousel-cern-item row"> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191472" id="preview-card" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/2024-12/D1-installation-HL-LHC.jpg') no-repeat center center / cover" data-background="/sites/default/files/2024-12/D1-installation-HL-LHC.jpg" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/test-stand-high-luminosity-lhc-welcomes-its-first-magnets"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/test-stand-high-luminosity-lhc-welcomes-its-first-magnets" hreflang="en" title="The test stand for the High-Luminosity LHC welcomes its first magnets"> <span> The test stand for the High-Luminosity LHC we... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-12-12T08:45:45Z">12 December, 2024</time> </div> </div> </div> </div> </div> </span></div></div> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191409" id="preview-card--9" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/styles/large/public/2024-11/AccRep29.11_2.png?itok=SZjWxJeZ') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-11/AccRep29.11_2.png?itok=SZjWxJeZ" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/accelerator-report-excellent-2024-lhc-run-ended-abruptly"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/accelerator-report-excellent-2024-lhc-run-ended-abruptly" hreflang="en" title="Accelerator Report: The excellent 2024 LHC run ended abruptly"> <span> Accelerator Report: The excellent 2024 LHC ru... </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-11-29T08:42:41Z">29 November, 2024</time> </div> </div> </div> </div> </div> </span></div></div> <div class="horizontal-boxes-row views-row col-md-4"><div class="views-field views-field-rendered-entity"><span class="field-content"> <div data-history-node-id="191379" id="preview-card--10" class="component-preview-cards box-pattern news_page" style="background:url('/sites/default/files/2024-11/202302-066_02.jpg') no-repeat center center / cover" data-background="/sites/default/files/2024-11/202302-066_02.jpg" class="component-preview-cards box-pattern news_page"> <a class="box-link" target="" href="/news/news/accelerators/record-data-lhc-2024"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3 class="standard-title"> <a href="/news/news/accelerators/record-data-lhc-2024" hreflang="en" title="Record data for the LHC in 2024"> <span> Record data for the LHC in 2024 </span> </a> </h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> Accelerators </div> <div class="preview-card__category" style="color:"> News </div> <div class="preview-card__date" style="color:"> <time datetime="2024-11-25T10:07:40Z">25 November, 2024</time> </div> </div> </div> </div> </div> </span></div></div> </div> </div> <div class="view-footer"> <a href="/news?audience=24">View all news</a> </div> </div> </div> </section> </div> </div> </div> </div> </main> <footer role="contentinfo"> <div class="row cern-footer"> <div class="col-xs-12 col-sm-4 col-md-4 col-lg-4 footer-first-col"> <div class="region region-footercolumn1"> <section id="block-followus" class="block block-block-content block-block-content6d2579e3-b650-496f-b854-0c744e176f43 clearfix"> <div class="block-custom-wrapper block-content block-content--type-basic block-content--view-mode-full ds-1col clearfix"> <div class="field field--name-field-visible-title field--type-string field--label-hidden field--item"> <p>Follow Us</p> </div> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p style="font-size:36px; font-family: CERNIcons, CernIcons, cern-icons; display: flex; gap: 10px;"><a href="http://www.facebook.com/cern"><img alt="Facebook icon" data-entity-type="file" data-entity-uuid="5da97013-d976-42e3-aaf3-c2cdf2683c3d" height="40" src="/sites/default/files/inline-images/lburdych/Facebook.png" width="40" loading="lazy"> </a> <a href="http://www.instagram.com/cern"> <img alt="Instagram icon" data-entity-type="file" data-entity-uuid="e80bf359-c309-4a5e-ae36-a6d4b950b285" height="40" src="/sites/default/files/inline-images/lburdych/Instagram.png" width="40" loading="lazy"> </a> <a href="https://www.tiktok.com/@cern_ontiktok"> <img alt="TikTok icon" data-entity-type="file" data-entity-uuid="8fc6b5aa-066e-4eb5-88de-56b61690e174" height="40" src="/sites/default/files/inline-images/lburdych/TikTok_0.png" width="40" loading="lazy"></a> <a href="https://x.com/CERN"> <img alt="X icon" data-entity-type="file" data-entity-uuid="f1391fcf-1b27-42d5-9712-2052e2fceee5" height="40" src="/sites/default/files/inline-images/lburdych/X.png" width="40" loading="lazy"> </a> <a href="http://www.linkedin.com/company/cern"> <img alt="LinkedIn icon" data-entity-type="file" data-entity-uuid="8674b1e8-b762-48f5-a649-f251a0eb6ad7" height="40" src="/sites/default/files/inline-images/lburdych/LinkedIn.png" width="40" loading="lazy"> </a> <a href="http://www.youtube.com/user/cerntv"> <img alt="Youtube icon" data-entity-type="file" data-entity-uuid="d429f87c-f790-4309-b0be-970374a526f9" height="40" src="/sites/default/files/inline-images/lburdych/Youtube.png" width="40" loading="lazy"></a></p> <p> </p> <p><a href="https://linktr.ee/CERN_official" rel="noopener noreferrer" target="_blank">More Social Media Accounts</a></p> </div> </div> </section> </div> </div> <div class="col-xs-12 col-sm-8 col-md-8 col-lg-8 footer-second-col"> <div class="row">  <div class="col-sm-5 col-md-4 col-md-offset-0 col-lg-4 col-lg-offset-0"> <div class="region region-footercolumn2"> <nav role="navigation" aria-labelledby="block-findusmenu-menu" id="block-findusmenu"> <h2 id="block-findusmenu-menu">Find us</h2> <ul class="menu menu--find-us-menu nav"> <li class="first"> <a href="/contact" data-drupal-link-system-path="node/150">Contact us</a> </li> <li class="last"> <a href="/directions" data-drupal-link-system-path="node/153">Getting here</a> </li> </ul> </nav> <section id="block-contactus" class="block block-block-content block-block-content17426485-662a-41e2-b3c6-3e42f882ec6f clearfix"> <div class="block-custom-wrapper block-content block-content--type-basic block-content--view-mode-full ds-1col clearfix"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p> </p> <ul> <li>CERN</li> <li>Esplanade des Particules 1</li> <li>P.O. Box</li> <li>1211 Geneva 23</li> <li>Switzerland</li> </ul> </div> </div> </section> </div> </div>  <div class="col-sm-6 col-sm-offset-1 col-md-4 col-md-offset-0 col-lg-4"> <div class=" mb-4"> <div class="region region-footercolumn3"> <nav role="navigation" aria-labelledby="block-connectwithusfooter-menu" id="block-connectwithusfooter"> <h2 id="block-connectwithusfooter-menu">CERN & You</h2> <ul class="menu menu--connect-with-us-footer nav"> <li class="first"> <a href="http://cern.ch/procurement">Doing business with CERN</a> </li> <li> <a href="https://cern.ch/knowledgetransfer">Knowledge transfer</a> </li> <li> <a href="https://voisins.web.cern.ch/en">CERN's neighbours</a> </li> <li> <a href="https://cernandsocietyfoundation.cern">CERN & Society Foundation</a> </li> <li> <a href="/partnerships" data-drupal-link-system-path="node/160">Partnerships</a> </li> <li class="last"> <a href="https://alumni.cern">Alumni</a> </li> </ul> </nav> </div> </div> </div>  <div class="col-sm-6 col-sm-offset-6 col-md-4 col-md-offset-0 col-lg-4 col-lg-offset-0"> <div class=" mb-4"> <div class="region region-footercolumn4"> <nav role="navigation" aria-labelledby="block-generalinfofooter-menu" id="block-generalinfofooter"> <h2 id="block-generalinfofooter-menu">General Information</h2> <ul class="menu menu--general-info-footer nav"> <li class="first"> <a href="https://careers.cern">Careers</a> </li> <li> <a href="https://visit.cern/">Visits</a> </li> <li> <a href="/data-privacy-protection-policy" data-drupal-link-system-path="node/166">Privacy policy</a> </li> <li class="last"> <a href="/cookies" data-drupal-link-system-path="node/165">Cookie Management</a> </li> </ul> </nav> </div> </div> </div> </div> </div> </div> <div class="copy-wrapper"> <a href="https://copyright.web.cern.ch/"> Copyright </a>  © 2025 CERN</div> </footer> </div> <script type="application/json" data-drupal-selector="drupal-settings-json">{"path":{"baseUrl":"\/","pathPrefix":"","currentPath":"node\/191233","currentPathIsAdmin":false,"isFront":false,"currentLanguage":"en"},"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"ajaxPageState":{"libraries":"eJxdjuuSwjAIhV8ohkfqkIZp45DCBKLbt9fYuqv7B_jO4ZZE3LyhgorKjVpIv4qLsBcNM7VtYsFctgUGnPVhjK6EDT7h5SQ0goUlIV_Md35PaE9c5v9ORV-v-ANG3nWQVIEjBcWGy_Oj1SC3rsjxT4n9WGgr5WC7OVUYl0Mvk6L786BBpa3HSrngl7zR3aZcTBn3OOBywleXNroVuk8zthw_IYzK4BVjldyZHueMhEw","theme":"cernpublic","theme_token":null},"ajaxTrustedUrl":{"\/search\/node":true},"mathjax":{"config_type":1,"config":{"tex2jax":{"inlineMath":[["$","$"],["\$","\$"]],"processEscapes":"true"},"showProcessingMessages":"false","messageStyle":"none"}},"matomo":{"disableCookies":false,"trackMailto":true},"bootstrap":{"forms_has_error_value_toggle":1,"modal_animation":1,"modal_backdrop":"true","modal_focus_input":1,"modal_keyboard":1,"modal_select_text":1,"modal_show":1,"modal_size":"","popover_enabled":1,"popover_animation":1,"popover_auto_close":1,"popover_container":"body","popover_content":"","popover_delay":"0","popover_html":0,"popover_placement":"right","popover_selector":"","popover_title":"","popover_trigger":"click","tooltip_enabled":1,"tooltip_animation":1,"tooltip_container":"body","tooltip_delay":"0","tooltip_html":0,"tooltip_placement":"auto left","tooltip_selector":"","tooltip_trigger":"hover"},"user":{"uid":0,"permissionsHash":"d9424c080bbbe1a8753db67d35f7a21a172caba20b11035cebfda4e6e296dd93"}}</script> <script src="/core/assets/vendor/jquery/jquery.min.js?v=3.7.1"></script> <script src="/core/assets/vendor/underscore/underscore-min.js?v=1.13.6"></script> <script src="/core/assets/vendor/once/once.min.js?v=1.0.1"></script> <script src="/sites/default/files/languages/en_p5SjUX5jHQqdSjFPWYikWHznV7uBLdbvuWpmhxPwWHg.js?sr5yaa"></script> <script src="/core/misc/drupalSettingsLoader.js?v=10.3.10"></script> <script src="/core/misc/drupal.js?v=10.3.10"></script> <script src="/core/misc/drupal.init.js?v=10.3.10"></script> <script src="/core/assets/vendor/tabbable/index.umd.min.js?v=6.2.0"></script> <script src="/modules/custom/cern-loading/js/cern_loading.js?sr5yaa"></script> <script src="/sites/default/modules/mathjax/js/config.js?v=10.3.10"></script> <script src="/libraries/MathJax/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script> <script src="/sites/default/modules/mathjax/js/setup.js?v=10.3.10"></script> <script src="/modules/contrib/matomo/js/matomo.js?v=10.3.10"></script> <script src="/core/misc/progress.js?v=10.3.10"></script> <script src="/themes/contrib/bootstrap/js/misc/progress.js?sr5yaa"></script> <script src="/core/assets/vendor/loadjs/loadjs.min.js?v=4.3.0"></script> <script src="/core/misc/debounce.js?v=10.3.10"></script> <script src="/core/misc/announce.js?v=10.3.10"></script> <script src="/core/misc/message.js?v=10.3.10"></script> <script src="/themes/contrib/bootstrap/js/misc/message.js?sr5yaa"></script> <script src="/core/misc/ajax.js?v=10.3.10"></script> <script src="/themes/contrib/bootstrap/js/misc/ajax.js?sr5yaa"></script> <script src="//framework.web.cern.ch/framework/3.0/js/prism/prism.js"></script> <script src="/sites/default/themes/custom/cernbase/js/cernbase.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/components/social-sharing.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/components/footer.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/agenda-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/faq-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/news-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/resources-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/stories-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/taxonomies-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/search-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/views/common-views.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/js/box-effects.js?sr5yaa"></script> <script src="//framework.web.cern.ch/framework/3.0/js/colorbox/jquery.colorbox-min.js"></script> <script src="//framework.web.cern.ch/framework/3.0/js/scroll-magic/ScrollMagic.min.js"></script> <script src="//framework.web.cern.ch/framework/3.0/js/scroll-magic/text-effects.js"></script> <script src="//framework.web.cern.ch/framework/3.0/js/owlcarousel/js/owl.carousel.js"></script> <script src="//framework.web.cern.ch/framework/3.0/js/owlcarousel/js/owl.carousel2.thumbs.js"></script> <script src="/sites/default/themes/custom/cernpublic/js/views_carousel.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernpublic/js/anchor-fix.js?sr5yaa"></script> <script src="/sites/default/themes/custom/cernbase/sass/bootstrap/javascripts/bootstrap.min.js?sr5yaa"></script> <script src="/themes/contrib/bootstrap/js/drupal.bootstrap.js?sr5yaa"></script> <script src="/themes/contrib/bootstrap/js/attributes.js?sr5yaa"></script> <script src="/themes/contrib/bootstrap/js/theme.js?sr5yaa"></script> <script src="/themes/contrib/bootstrap/js/popover.js?sr5yaa"></script> <script src="/themes/contrib/bootstrap/js/tooltip.js?sr5yaa"></script> <script src="/modules/custom/cern-components/patterns/molecules/preview-card/js/component-preview-card.js?sr5yaa"></script> <script src="/modules/custom/cern-components/patterns/molecules/news-display/js/news-display.component.js?sr5yaa"></script> <script src="/modules/custom/cern-toolbar/assets/js/cern_toolbar.js?v=1.x"></script> <script src="/modules/custom/cern-components/patterns/molecules/menu/js/menu.component.js?sr5yaa"></script> </body> </html>

CINXE.COM

Accelerator Report: Lead ions take the stage | CERN