ATLAS | CERN

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href="/fr/news/press-release/cern/cern-council-selects-mark-thomson-next-director-general-starting-2026" hreflang="fr" title="Le Conseil du CERN choisit Mark Thomson comme prochain directeur g茅n茅ral du CERN 脿 compter de 2026"> <span> Le Conseil du CERN choisit Mark Thomson comme... </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:"> Press release </div> <div class="preview-card__date" style="color:"> <time datetime="2024-11-06T11:00:02Z">6 novembre, 2024</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191152" id="preview-card--2" class="component-preview-cards box-pattern story_page" style="background:url('/sites/default/files/styles/large/public/2024-10/ba1938f2-89a3-4bdd-bd79-5b83ed6f3e35.JPG?itok=Lh4ptU3U') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-10/ba1938f2-89a3-4bdd-bd79-5b83ed6f3e35.JPG?itok=Lh4ptU3U" class="component-preview-cards box-pattern story_page"> <a class="box-link" target="" href="/fr/news/news/cern/estonian-flag-raised-cern"></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="/fr/news/news/cern/estonian-flag-raised-cern" hreflang="fr" title="Le drapeau de l鈥橢stonie hiss茅 au CERN"> <span> Le drapeau de l鈥橢stonie hiss茅 au CERN </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="2024-10-17T12:33:54Z">17 octobre, 2024</time> </div> </div> </div> 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<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="2024-10-11T09:08:31Z">11 octobre, 2024</time> </div> </div> </div> </div> </div> </div> <div class="views-row"> <div data-history-node-id="191077" id="preview-card--4" class="component-preview-cards box-pattern story_page" style="background:url('/sites/default/files/styles/large/public/2024-10/10-Family-photo%20%281%29.jpg?itok=UtnK0P4h') no-repeat center center / cover" data-background="/sites/default/files/styles/large/public/2024-10/10-Family-photo%20%281%29.jpg?itok=UtnK0P4h" class="component-preview-cards box-pattern story_page"> <a class="box-link" target="" href="/fr/news/press-release/cern/blowing-out-70-candles-cern-celebrates-seven-decades-discoveries-and-looks"></a> <div 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Il 茅tudie des domaines de physique tr猫s vari茅s, de la <a href="/fr/science/physics/higgs-boson">recherche du boson de Higgs</a> aux <a href="/fr/science/physics/extra-dimensions-gravitons-and-tiny-black-holes">dimensions suppl茅mentaires</a> de l鈥檈space-temps, en passant par les particules qui pourraient former la <a href="/fr/science/physics/dark-matter">mati猫re noire</a>.</p> <p>Les faisceaux de particules du LHC entrent en collision au centre du d茅tecteur ATLAS. Les d茅bris de collision ainsi produits forment de nouvelles particules, qui 茅mergent du point de collision dans toutes les directions. Six sous-syst猫mes de d茅tection diff茅rents dispos茅s en couches autour du point de collision enregistrent la trajectoire, l鈥檌mpulsion et l鈥櫭﹏ergie des particules, ce qui permet d'identifier chacune d'elles. Un 茅norme syst猫me d鈥檃imants permet d鈥檌ncurver la trajectoire des particules et, ainsi, de mesurer leur impulsion.</p> <p>Les interactions produites dans les d茅tecteurs d鈥橝TLAS cr茅ent un 茅norme flux de donn茅es. Pour assimiler ces donn茅es, ATLAS utilise un syst猫me de 芦 d茅clenchement 禄 de pointe, qui indique au d茅tecteur les 茅v茅nements devant 锚tre enregistr茅s et ceux devant 锚tre ignor茅s. Des syst猫mes complexes d鈥檃cquisition de donn茅es et de calcul sont ensuite utilis茅s pour analyser les 茅v茅nements enregistr茅s. Mesurant 46 m de long, 25 m de haut et 25 m de large, et pesant 7000 tonnes, le d茅tecteur ATLAS est le d茅tecteur de particules le plus volumineux jamais construit. Il se situe dans une caverne, 脿 100 m sous terre, 脿 proximit茅 du site principal du CERN et de la commune de Meyrin, en Suisse.</p> <p>Plus de 5 500 scientifiques issus de 245 instituts, repr茅sentant pas moins de 42 pays, travaillent sur l鈥檈xp茅rience ATLAS (mars 2022). Pour les derni猫res informations, voir <a href="https://greybook.cern.ch/experiment/detail?id=ATLAS">ici</a>.</p> <p> </p> <script> function PopupCenter(pageURL, title,w,h) { var left = (screen.width/2)-(w/2); var top = (screen.height/2)-(h/2); var targetWin = window.open (pageURL, title, 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left); } </script> <section class="blurb"> <p><a href="javascript:void(0);" onclick="PopupCenter('http://cern.ch/virtual-tours/vtours/ATLAS/ATLAS.html', 'myPop1',800,600);"><img alt="ATLAS" src="/sites/home.web.cern.ch/files/image/virtual-tours/atlas_vtour.jpg"></a></p> <h2><a href="javascript:void(0);" onclick="PopupCenter('http://cern.ch/virtual-tours/vtours/ATLAS/ATLAS.html', 'myPop1',800,600);">Visite virtuelle</a></h2> <p>Faites une visite virtuelle du d茅tecteur ATLAS</p> </section> </div> </div> </div> </div> </div> </div> </div> </div> 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