{"id":6451,"date":"2015-05-10T18:00:19","date_gmt":"2015-05-10T16:00:19","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=6451"},"modified":"2015-05-06T20:11:55","modified_gmt":"2015-05-06T18:11:55","slug":"cern-le-grand-collisionneur-de-hadrons-lhc-a-repris-les-collisions-de-protons","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/cern-le-grand-collisionneur-de-hadrons-lhc-a-repris-les-collisions-de-protons\/","title":{"rendered":"CERN: le grand collisionneur de hadrons (LHC) a repris les collisions de protons"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p style=\"text-align: justify;\">Le grand collisionneur de hadrons (LHC) du CERN a repris mardi les collisions de protons, nouvelle \u00e9tape de son red\u00e9marrage progressif apr\u00e8s un arr\u00eat de deux ans, a annonc\u00e9 l&rsquo;organisation europ\u00e9enne pour la recherche nucl\u00e9aire.<\/p>\n<p style=\"text-align: justify;\">Des collisions \u00e0 basse \u00e9nergie ont \u00e9t\u00e9 effectu\u00e9es mardi matin, a indiqu\u00e9 le CERN dans un communiqu\u00e9, une \u00e9tape transitoire vers les collisions de 13 TeV (tera-\u00e9lectron-volts) qui constituent l&rsquo;objectif de cette deuxi\u00e8me phase d&rsquo;exploitation.<\/p>\n<p style=\"text-align: justify;\">Le plus grand et puissant acc\u00e9l\u00e9rateur de particules du monde, un anneau creus\u00e9 sous terre \u00e0 cheval sur la fronti\u00e8re franco-suisse pr\u00e8s de Gen\u00e8ve, a red\u00e9marr\u00e9 d\u00e9but avril et doit progressivement monter en puissance pour atteindre son plein potentiel.<\/p>\n<p style=\"text-align: justify;\">L&rsquo;\u00e9nergie des collisions entre protons atteindra alors 13 TeV, une puissance encore jamais atteinte, pr\u00e8s du double de l&rsquo;\u00e9nergie produite lors de la premi\u00e8re phase d&rsquo;exploitation.<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p style=\"text-align: justify;\">Le complexe comprend un tunnel en forme d&rsquo;anneau de 27 kilom\u00e8tres, dans lequel s&rsquo;entrechoquent des milliards de protons qui \u00e9clatent en toutes sortes de particules.<\/p>\n<p style=\"text-align: justify;\">Le red\u00e9marrage du LHC provoque une grande excitation au sein de la communaut\u00e9 scientifique. L&rsquo;acc\u00e9l\u00e9rateur a d\u00e9j\u00e0 permis, lors de sa premi\u00e8re phase d&rsquo;exploitation, de confirmer l&rsquo;existence du boson de Higgs.<\/p>\n<p style=\"text-align: justify;\">Les chercheurs esp\u00e8rent percer d&rsquo;autres myst\u00e8res de l&rsquo;univers lors de la deuxi\u00e8me phase d&rsquo;exploitation de cette machine unique.<br \/>\nLe boson de Higgs est consid\u00e9r\u00e9 par les physiciens comme la clef de vo\u00fbte de la structure fondamentale de la mati\u00e8re, la particule \u00e9l\u00e9mentaire qui donne leur masse \u00e0 nombre d&rsquo;autres, selon la th\u00e9orie dite du \u00ab\u00a0Mod\u00e8le standard\u00a0\u00bb.<\/p>\n<p style=\"text-align: justify;\"><a href=\"http:\/\/www.laterredufutur.com\/accueil\/\">TDF<\/a><\/p>\n<p style=\"text-align: justify;\">source :\u00a0http:\/\/www.leparisien.fr\/<\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"6451\">(365)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Le grand collisionneur de hadrons (LHC) du CERN a repris mardi les collisions de protons, nouvelle \u00e9tape de son red\u00e9marrage&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6452,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[4265,4266,560,101,117,561,4264,4010,1399,4267,381],"class_list":["post-6451","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-atome","tag-boson-de-higgs","tag-cern","tag-energie","tag-espace","tag-geneve","tag-lhc","tag-machine","tag-matiere","tag-protons","tag-theorie","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/LHC.jpg?fit=800%2C411&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-1G3","jetpack-related-posts":[{"id":15166,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-nouvelle-exoplanete-qui-pourrait-accueillir-la-vie\/","url_meta":{"origin":6451,"position":0},"title":"Une nouvelle exoplan\u00e8te qui pourrait accueillir la vie ?","author":"Admin","date":"9 mai 2017","format":false,"excerpt":"Elle porte le doux nom de LHS 1140b. Situ\u00e9e dans la zone habitable autour d'une \u00e9toile situ\u00e9e \u00e0 40 ann\u00e9es lumi\u00e8res de notre syst\u00e8me solaire, ce monde rocheux a toutes les caract\u00e9ristiques pour qu'on y d\u00e9couvre \u00e9ventuellement la pr\u00e9sence d'eau \u00e0 sa surface. LHS 1140b grimpe en t\u00eate de la\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/exoplanete.jpg?fit=1024%2C415&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/exoplanete.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/exoplanete.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/exoplanete.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":11863,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-images-impressionnantes-de-la-terre-en-4k-filmee-de-lespace\/","url_meta":{"origin":6451,"position":1},"title":"Les images impressionnantes de la Terre en 4K film\u00e9e de l&rsquo;espace !","author":"Admin","date":"21 avril 2016","format":false,"excerpt":"La Nasa a diffus\u00e9 mardi, sur sa cha\u00eene YouTube, une vid\u00e9o de la Terre vue de la Station spatiale internationale. 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La\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/terre-2015.jpg?fit=750%2C750&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/terre-2015.jpg?fit=750%2C750&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/terre-2015.jpg?fit=750%2C750&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/terre-2015.jpg?fit=750%2C750&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":1419,"url":"https:\/\/www.laterredufutur.com\/accueil\/lannee-775-ou-le-ciel-nous-est-tombe-sur-la-tete\/","url_meta":{"origin":6451,"position":2},"title":"L\u2019ann\u00e9e 775 o\u00f9 le ciel nous est tomb\u00e9 sur la t\u00eate","author":"Admin","date":"2 juin 2013","format":false,"excerpt":"Ce serait l\u2019ann\u00e9e 775 de l\u2019\u00e8re chr\u00e9tienne, d\u2019apr\u00e8s une \u00e9tude qui vient de para\u00eetre dans Nature et qui a trouv\u00e9 une concentration anormalement \u00e9lev\u00e9e de carbone-14 dans les cernes de croissance d\u2019arbres anciens (du Japon, d\u2019Europe et d\u2019Am\u00e9rique du Nord) correspondant \u00e0 cette ann\u00e9e pr\u00e9cise. 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Leur proposition principale est que le rayonnement cosmique influence directement le taux de couverture nuageuse de la\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"cloud","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/09\/cern2011.jpg?fit=468%2C322&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":18573,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-traces-dune-tempete-solaire-geante-et-vieille-de-2-700-ans-ont-ete-detectees-dans-les-glaces-du-groenland\/","url_meta":{"origin":6451,"position":4},"title":"Des traces d&rsquo;une temp\u00eate solaire g\u00e9ante et vieille de 2700 ans ont \u00e9t\u00e9 d\u00e9tect\u00e9es dans les glaces du Groenland","author":"Admin","date":"12 mars 2019","format":false,"excerpt":"La preuve d'une temp\u00eate solaire exceptionnellement forte qui a frapp\u00e9 la Terre en 660 avant notre \u00e8re a \u00e9t\u00e9 d\u00e9tect\u00e9e dans des carottes de glace du Groenland - une d\u00e9couverte qui montre que nous avons encore beaucoup \u00e0 apprendre sur ces \u00e9v\u00e9nements perturbateurs. 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