非常漂亮的大型强子对撞机Word文档格式.docx
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非常漂亮的大型强子对撞机Word文档格式.docx
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ViewoftheCMS(CompactMuonSolenoid)experimentTrackerOuterBarrel(TOB)inthecleaningroom.TheCMSisoneoftwogeneral-purposeLHCexperimentsdesignedtoexplorethephysicsoftheTerascale,theenergyregionwherephysicistsbelievetheywillfindanswerstothecentralquestionsattheheartof21st-centuryparticlephysics.(MaximilienBrice,©
CERN)
TheGlobeofInnovationinthemorning.ThewoodenglobeisastructureoriginallybuiltforSwitzerland'
snationalexhibition,Expo'
02,andis40meterswide,27meterstall.(MaximilienBrice;
ClaudiaMarcelloni,©
AssemblyandinstallationoftheATLASHadronicendcapLiquidArgonCalorimeter.TheATLASdetectorcontainsaseriesofever-largerconcentriccylindersaroundthecentralinteractionpointwheretheLHC'
sprotonbeamscollide.(RoyLangstaff,©
ChecksareperformedonthealignmentofthemagnetsintheLHCtunnel.Itisvitalthateachmagnetisplacedexactlywhereithasbeendesignedsothatthepathofthebeamispreciselycontrolled.(MaximilienBrice,©
TheALICEInnerTrackingSystemduringitstransportintheexperimentalcavernanditsinsertionintotheTimeProjectionChamber(TPC).ALICE(ALargeIonColliderExperiment@CERN)willstudythephysicsofultrahigh-energyproton-protonandlead-leadcollisionsandwillexploreconditionsinthefirstinstantsoftheuniverse,afewmicrosecondsaftertheBigBang.(MaximilienBrice,©
InsertionofthetrackerintheheartoftheCMSdetector.(MaximilienBrice,©
TheLHCbelectromagneticcalorimeter.Thishuge6X7squaremeterwallconsistsof3300blockscontainingscintillator,fibreopticsandlead.Itwillmeasuretheenergyofparticlesproducedinproton-protoncollisionsattheLHCwhenitisstarted.Photons,electronsandpositronswillpassthroughthelayersofmaterialinthesemodulesanddeposittheirenergyinthedetectorthroughashowerofparticles.(MaximilienBrice,©
PhotofromtheCMSpixel-stripintegrationtestperformedattheTrackerIntegrationFacilityattheMeyrinsite.(MaximilienBrice,©
French,SwissandCERNfiremenmoverescueequipmentthroughtheLHCtunnel.(MaximilienBrice,©
ViewoftheLHCcryo-magnetinsidethetunnel.(MaximilienBrice,©
TheZ+endoftheCMSTrackerwithTrackerOuterBarrelcompleted.(MaximilienBrice,©
ViewfromthesurfaceduringloweringofthefirstATLASsmallwheelintothetunnelonsideCofthecavern.(ClaudiaMarcelloni,©
LoweringofoneofthetwoATLASmuonsmallwheelsintothecavern.(ClaudiaMarcelloni,©
ViewoftheATLASdetectorduringJuly2007(ClaudiaMarcelloni,©
AwelderworksontheinterconnectionbetweentwooftheLHC'
ssuperconductingmagnetsystems,intheLHCtunnel.(MaximilienBrice,©
ViewoftheCMSdetectorattheendof2007.(MaximilienBrice,©
TransportingtheATLASMagnetToroidEnd-CapAbetweenbuilding180toATLASpoint1.(ClaudiaMarcelloni,©
ViewoftheATLAScavernsideAbeginningofFebruary2008,beforeloweringoftheMuonSmallWheels(MaximilienBrice;
TheL3magnetintheALICEcavern,withonedooralmostclosed.(MonaSchweizer,©
Loweringofthelastelement(YE-1)oftheCMSdetectorintoitsundergroundexperimentalcavern.(MonaSchweizer,©
ThefirstATLASInnerDetectorEnd-CapaftercompleteinsertionwithintheLiquidArgonCryostat.(ClaudiaMarcelloni;
MaxBrice,©
InstallationoftheATLASpixeldetectorintothecavern(ClaudiaMarcelloni,©
InstallationoftheBeamPipeintheATLAScavern(MaximilienBrice,©
ViewoftheComputerCenterduringtheinstallationofservers.(MaximilienBrice;
Installationoftheworld'
slargestsilicontrackingdetectorintheCMSexperiment.(MichaelHoch,©
AerialviewofCERNandthesurroundingregionofSwitzerlandandFrance.Threeringsarevisible,thesmaller(atlowerright)showstheundergroundpositionoftheProtonSynchrotron,themiddleringistheSuperProtonSynchrotron(SPS)withacircumferenceof7kmandthelargestring(27km)isthatoftheformerLargeElectronandPositroncollider(LEP)acceleratorwithpartofLakeGenevainthebackground.(©
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