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L'héritage Du LEP REVUE INTERNATIONALE DE LA PHYSIQUE DES HAUTES ENERGIES COURRIER Bmffl^ffiffiSKÏfl Br^BfflSIFl^PB SrjffV^BMt'fYt^i L'héritage du LEP M1CROSTRUCTUIES GRAVITATION SUPEiSYlETitlE Des techniques de détection innovantes Progrès dans la course à la détection Le trentième anniversaire du mieux apportent de meilleures performances pl4 des ondes gravitationnelles pl7 gardé des secrete de Punivers pl9 Second Announcement http://www.nss-mic.org Nuclear Science Symposium and mm mm mm ^^^wL j^^^L ^E^ù IMT ITilMliJi ir»BvE Tiltl^llliiMlJiB ^lilMIMiiiBMlIMC! JM^^IiSJlKM \^ 12th International Workshop on Room-Temperature • Year' Semiconductor X- and Gamma-Ray Detectors Town & Country Radiation Detectors * Short Courses Resort and And Electronics: * Oral Presentations Applications in Physics, * Plenary and Parallel Sessions Convention Center Industry» Space * Poster Sessions and Medicine * Workshops San Diego, California * Social Events Physics» Engineering and * Companion Program Mathematical Aspects of November Medical Imaging Abstract Deadlines: April 20,2001 (NSS, MIC, SNPS) 4-10,2001 June 15,2001 (Workshop) IndustrialLïïivttîïSti llll .Kli<\/ïïll>ljisi,l/%Jïïi/ Exhibition ** Los Alamos N&TS0N.&L LABORATORY' NEVADA^ AWZOHAITISI Las VoQas_^r fï~ „j£ffîk^ mfjkSmwÊMÊ u UNlTEj^&TE^^ Bakersfielc Oxnard. Los Angeles" San Diegojj Pacific MëricaJi ^^mm BAJA ICLRC Ocean CALIFORNIA Santa Inès Hermosillo, /AF7V General Chairman: Anthony Lavietes • :$Mj»G imgoms&mcA NUQSARÊ wrence LivcrmoFe National Laboratory 7000 East Avenue L453 Livermore, California 94550 USA ||S9S5|B IMSk ' L"—»tfi*4 I SOMMAIRE L'actualité mondiale en physique des hautes énergies et dans les domaines voisins Le Courrier CERN est distribué aux gouvernements des Etats membres, aux instituts ou laboratoires affiliés au CERN ainsi qu'à tout son personnel. Il est publié dix fois par an en français et en COURRIER anglais. Les articles qu'il contient n'expriment pas nécessairement l'opinion de la Direction du CERN. Rédacteur: Gordon Fraser CERN, 1211 Genève 23, Suisse E-mail [email protected] Fax +41 (22) 782 1906 CERN Web http://www.cerncourier.com Comité consultatif: R Landua (Président), F Close, E Lillest0l, VOLUME 41 NUMÉRO 2 MARS 2001 H Hoffmann, C Johnson, K Potter, PSphicas Correspondants extérieurs: Argonne National Laboratory (USA): D Ayres Brookhaven, National Laboratory (USA): PYamin Cornell University (USA): D G Cassel DESY Laboratory (Allemagne): llka Flegel, PWaloschek Fermi National Accelerator Laboratory (USA): Judy Jackson GSI Darmstadt (Allemagne): G Siegert INFN (Italie): A Pascolini IHEP, Beijing (Chine): Qi Nading Jefferson Laboratory (USA): S Corneliussen JJINR Dubna (Russie): B Starchenko KEK National Laboratory (Japon): A Maki Lawrence Berkeley Laboratory (USA): Christine Celata Los Alamos National Laboratory (USA): C Hoffmann HERA-B, nouvelle orientation p8 Les coulisses de l'arrêt du LEP p24 Hommage à Leprince-Ringuet p36 NIKHEF Laboratory (Pay-Bas): Margriet van der Heijden Novosibirsk Institute (Russie): S Eidelman Orsay Laboratory (France): Anne-Marie Lutz Nouvelles 5 PSI Laboratory (Suisse): P-R Kettle Rutherford Appleton Laboratory (UK): Jacky Hutchinson L'Europe soutient le projet Data Grid. Les expériences goûtent de Saclay Laboratory (France): Elisabeth Locci nouveau à la soupe quark-gluon. L'accélérateur moscovite a créé son IHEP, Serpukhov (Russie): Yu Ryabov Stanford Linear Accelerator Center (USA): M Riordan premier faisceau. HERA-B prend un nouveau tournant. Le TRIUMF Laboratory (Canada): M K Craddock gouvernement approuve le projet JAERI/KEK. Lorsqu'une conférence Produit pour le CERN par Institute of Physics Publishing Ltd de physique reflète la prospérité d'un pays. Les scientifiques I0P Publishing Ltd, Dirac House, Temple Back, Bristol BS16BE, UK Tél. +44 (0)117 929 7481 cherchent à percer le secret du succès des "start-up" et des "spin-off". E-mail [email protected] Energie maximum pour la source d'isotopes canadienne. Le CESR fait Web http://www.iop.org ses adieux à la physique des B. Head of magazines: Richard Roe Sales manager: Justin Mafham Astrovjgie Marketing manager: Tessa Edgecombe 13 Art director: Andrew Giaquinto Production controller: Kate Booth by Reportages Production editor: Lucy Farrar Technical illustrator: Alison Tovey Les détecteurs à microstructures promis à un bel avenir 141 Advertising manager: Nicola Rylett Les meilleures performances des détecteurs miniatures Deputy advertising manager: Chris Thomas Recruitment sales: Andrew Hardie et Jayne Purdy Advertisement production: Katie Graham Le chant de la gravité 17 Publicité: Nicola Rylett, Chris Thomas, De nouveaux détecteurs d'ondes gravitationnelles Andrew Hardie ou Jayne Purdy Tel.+44 (0)117 930 1027 [email protected] Retour sur la superhistoire 191 Fax +44 (0)117 930 1178 Une rétrospective des 30 années de la supersymétrie Distribution générale: Jacques Dallemagne, CERN, 1211 Genève 23, Suisse. [email protected] Des exemplaires peuvent être obtenus dans certains pays, aux L'union fait la force: mondialisation de la physique des particules 22 | adresses suivantes: La planification des grands projets du futur Chine: Chen Huaiwei, Institut de physique des hautes énergies, B.P. 918, Beijing, République populaire de Chine Allemagne: Gabriela Heessel ou Veronika Werschner, DESY, Saison du Higgs et mélodrame 24 Notkestr. 85, 22603 Hamburg 52, Allemagne, [email protected] Italie: Loredana Rum ou Anna Pennacchietti, INFN, Casella Postale L'épilogue dramatique de l'ère du LEP 56, 00044 Frascati, Roma Royaume-Uni: Su Lockley, Rutherford Appleton Laboratory, Chilton, Gros plan sur la physique en atmosphère raréfiée Didcot, Oxfordshire 0X11OQX, Angleterre. [email protected] USA/Canada: Janice Voss, Creative Mailing Services, P.O. Box 1147, L'étude des processus exceptionnels en physique St Charles, Illinois 60174. Tél. 630-377-1589. Fax 630-377-1569 Publié par: Laboratoire européen de physique des particules, Personnalités 34 CERN, 1211 Genève 23, Suisse. Tél. +41 (22) 767 6111 Telefax +41 (22) 767 65 55 Recrutement 40 Imprimé par: Warners (Midlands) pic, Bourne, Lincolnshire, Angleterre ©2001 CERN ISSN 0374-2288 Couverture: Higgstogramme - un événement candidat de Higgs observé dans le détecteur L3 au \loP collisionneur électron-positon LEP du CERN. Voir p24 le récit de la dernière année d'exploitation du LEP. Courrier CERN Mars 2001 3 28 ch 1GS/S Multichannel GS/s data acquisition systems used For more information, to be expensive. They also would fill up entire visit our Web site at www.acqiris.com instrument racks with power-hungry electronics. But no more. We have shrunk the size, lowered 1) Rackmount kit available the cost, reduced the power consumption and incorporated exceptional features such as clock synchronization and complete trigger distribution.1^ A single crate (no bigger than a desktop PC) can house up to 24 channels at 500MS/S or 1 GS/s when deploying an embedded processor, or up to 28 channels (14 at 2GS/s) using a PCI interface. pris NOUVELLES CERN L'Europe soutient le projet Data Grid Les projets concernant la Des stratégies seront élaborées prochaine génération de pour optimiser et comptabiliser systèmes de traitement de les interrogations des données, l'information en réseau ont fait en tenant compte de l'effet des un grand pas en avant lorsque schémas d'utilisation dynamique. les négociations relatives au Une interface générique vers programme Société de divers systèmes de gestion des l'information (relevant du mémoires de masse, utilisés sur cinquième programme-cadre différents sites de la Grille, sera pour la recherche) se sont également fournie. conclues sur la décision de L'objectif du lot de tâches WP financer le projet de recherche et 4 sur la gestion du matériel est de développement Data Grid. Ce de développer de nouveaux projet de "Grille de calcul" avait automatismes de gestion des été soumis à l'Union européenne systèmes. Cela permettra (UE) par un groupement d'édifier de très grandes constitué de 21 organismes Une initiative, bien avancée, est en cours afin de construire une infrastructure structures informatiques œuvrant dans un large éventail prototype de Grille de calcul destinée à traiter les données produites par les comprenant des dizaines de d'applications scientifiques dont expériences au collisionneur LHC du CERN. Un seul centre de premier niveau - milliers de processeurs grand la physique des hautes énergies, Tier 1 - apparaît ici, mais en fait il y en aura en France, Italie, Pays-Bas et au public, avec de faibles coûts l'observation de la Terre, la Royaume-Uni, tandis que Ton trouvera ailleurs dans chaque pays deux ou trois d'administration et d'exploitation biologie, l'informatique et centres régionaux - Tier 2. Un certain nombre de centres de troisième niveau - des systèmes. Tous les aspects l'industrie. Le CERN est le chef de Tier 3 - seront installés sur les campus universitaires, tandis que le niveau 4 - de la gestion seront couverts, de file et coordinateur du projet. Tier 4 - correspondra aux départements de recherche. l'installation et de la A partir de cette année, le configuration des systèmes à la projet Data Grid va recevoir plus de €9,8 millions portera sur trois de ces lots: WP 2, consacré à la surveillance, aux alarmes et au dépannage. pendant trois ans pour mettre au point les gestion et à la reproduction des données; WP 4, qui WP 8 concerne la mise en œuvre et la gestion intergiciels (logiciels intermédiaires) d'adaptation se penchera sur la gestion du matériel des programmes décentralisés de simulation, de des applications pour des systèmes informatiques informatique, etWP 8, qui s'occupera des reconstitution et d'analyse exploitant la largement disséminés. En plus du soutien financier applications en physique des hautes énergies. La technologie de la Grille. Ce lot est essentiel au de l'UE, cette initiative reçoit un appui substantiel plupart des ressources destinées à WP 8 projet car, avec quelques autres, il permet de la part d'organes de financement d'un certain proviendront des quatre grandes collaborations d'éprouver à grande échelle l'intergiciel mis au nombre d'Etats membres du CERN. En raison de expérimentales du LHC : ATLAS, CMS, ALICE et LHCb.
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