{"id":8130,"date":"2017-05-09T12:36:02","date_gmt":"2017-05-09T10:36:02","guid":{"rendered":"https:\/\/staging.ggba.swiss\/cern-inaugure-nouvel-accelerateur-de-particules\/"},"modified":"2023-07-04T13:43:02","modified_gmt":"2023-07-04T11:43:02","slug":"cern-inaugure-nouvel-accelerateur-de-particules","status":"publish","type":"post","link":"https:\/\/staging.ggba.swiss\/fr\/cern-inaugure-nouvel-accelerateur-de-particules\/","title":{"rendered":"Le CERN inaugure un nouvel acc\u00e9l\u00e9rateur de particules"},"content":{"rendered":"<p>Lors d&rsquo;une c\u00e9r\u00e9monie qui a eu lieu aujourd&rsquo;hui sur son site principal \u00e0 Meyrin, dans le canton de Gen\u00e8ve, le <a href=\"https:\/\/home.cern\/fr\" target=\"_blank\" rel=\"noopener noreferrer\">CERN<\/a> a inaugur\u00e9 un tout nouvel acc\u00e9l\u00e9rateur lin\u00e9aire, le Linac 4. Premier maillon essentiel d&rsquo;une cha\u00eene d&rsquo;acc\u00e9l\u00e9ration, l\u2019acc\u00e9l\u00e9rateur lin\u00e9aire produit les particules et leur donne l&rsquo;acc\u00e9l\u00e9ration initiale. D\u00e8s sa mise en service, le Linac 4 alimentera en faisceaux de haute \u00e9nergie le complexe d&rsquo;acc\u00e9l\u00e9rateurs du CERN, ce qui permettra au Grand collisionneur de hadrons (LHC) d&rsquo;atteindre une luminosit\u00e9 plus \u00e9lev\u00e9e d&rsquo;ici \u00e0 2021.<\/p>\n<p>Long de 90 m\u00e8tres, le Linac 4 se trouve 12 m\u00e8tres sous terre. Sa construction a dur\u00e9 pr\u00e8s de 10 ans. Apr\u00e8s une p\u00e9riode de tests intensive, il sera reli\u00e9 au complexe d&rsquo;acc\u00e9l\u00e9rateurs du CERN lors d\u2019un arr\u00eat technique pr\u00e9vu en 2019-2020. La nouvelle machine s\u2019inscrit dans un programme con\u00e7u pour moderniser le complexe d&rsquo;acc\u00e9l\u00e9rateurs du CERN dans le cadre du projet LHC haute luminosit\u00e9.<\/p>\n<p><strong>Vers une nouvelle physique<\/strong><\/p>\n<p>Le <a href=\"https:\/\/home.cern\/fr\/topics\/high-luminosity-lhc\" target=\"_blank\" rel=\"noopener noreferrer\">projet LHC haute luminosit\u00e9<\/a> a pour but d\u2019am\u00e9liorer la performance du LHC afin d\u2019augmenter, \u00e0 partir de 2025, le potentiel de d\u00e9couvertes de l\u2019acc\u00e9l\u00e9rateur. Gr\u00e2ce \u00e0 l\u2019augmentation du nombre de collisions et donc de la quantit\u00e9 de donn\u00e9es enregistr\u00e9es par les exp\u00e9riences, le LHC haute luminosit\u00e9 fournira des mesures plus pr\u00e9cises des particules fondamentales et permettra d\u2019observer les rares processus qui ont lieu au-dessous du niveau de sensibilit\u00e9 actuel.<\/p>\n<p>\u00ab Le Linac 4 est un injecteur moderne, le premier \u00e9l\u00e9ment essentiel de notre ambitieux programme d&rsquo;am\u00e9lioration conduisant au LHC \u00e0 haute luminosit\u00e9. Cette phase de haute luminosit\u00e9 augmentera consid\u00e9rablement les capacit\u00e9s des exp\u00e9riences LHC en vue de la d\u00e9couverte d\u2019une nouvelle physique et de mesures plus pr\u00e9cises des propri\u00e9t\u00e9s du boson de Higgs \u00bb, a d\u00e9clar\u00e9 Fabiola Gianotti, directrice g\u00e9n\u00e9rale du CERN, dans un <a href=\"https:\/\/home.cern\/fr\/about\/updates\/2017\/05\/brand-new-linear-accelerator-cern\" target=\"_blank\" rel=\"noopener noreferrer\">communiqu\u00e9<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le Linac 4 deviendra le premier maillon de la cha\u00eene d&rsquo;acc\u00e9l\u00e9rateurs du CERN, permettant ainsi au Grand collisionneur de hadrons LHC de fournir des faisceaux de protons plus intenses pour la recherche.<\/p>\n","protected":false},"author":3,"featured_media":8131,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"mc4wp_mailchimp_campaign":[]},"categories":[842],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.10 - 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