简介：ThispaperoutlinesthedesgnandprototypingoftheATLASHighLevelTrigger(HLT)wihchisacombinedeffortoftheDataCollectionHLTandPESA(PhysicsandEventSelectionArchitecture)subgroupswithintheATLASTDAQcollaboration.Twoimportantissues,alresdyoutlinedintheATLASHLT,DAQandDCSTechnicalProposal[1]willbehighlighted:thetreatmentoftheLVL2TriggerandEventFilterasaspectsofageneralHLTwithaviewtoeasiermigrationofalgorthmsbetweenthetwolevels;unificationoftheselectivedatacollectionforLVL2andEventBuilding.

简介：

简介：Intheapplicationsofaircrafts,automobiles,railways,biomedicineandoff-shorestructures,manycomponentsmayexperiencecyclicloadingconditionsoveralongperiodoftime,runninguptoseveralhundredmillioncycles.1Determinationoflonglifefatiguebehaviorbecomesextremelyimportantforbetterunderstandinganddesignofcomponentsandstructures.

简介：Thehighpressureequationofstateforcarbonisconstructedbysomesimplephysicalmodels.Forsolidstate,amultiphaseequationofstateisconsidered,whichincludesfoursolidstates.Forliquidstate,theliquidperturbationtheoryofCRISmodelisused.Inthehightemperature,theelectroniccontributionisobtainedbytheionizationequilibriumtheory.Theresultofourcalculationbasedontheabovemodelsiscomparedwiththefirstprincipledensityfunctionalcalculationandtheothermodels.TheHugoniotandthephasediagramofcarbonarealsocomparedwiththeexperiments.Theresultsaresatisfactory.

简介：

简介：Afterlessthanayearofoperation,theBaBarexperimentatSLAChascollectedalmost100millionparticlecollisioneventsinadatabaseapproaching165TB.Around20TBofdatahasbeenexportedviatheInternettotheBaBarregionalcenteratIN2P3inLyon,France,andaround40TBofsimulateddatahasbeenimportedfromtheLawrenceLivermoreNationalLaboratory(LLNL),BaBarCollaboratorsplantodoubledatacollectioneachyearandexportathirdofthedatatoIN2P3.SowithinafewyearstheSLACOC3(155Mbps)connectionwillbefullyutilizedbyfiletransfertoFrancealone.Upgradestoinfrastructureisessentialanddetailedunderstandingofperformanceissuesandtherequirementsforreliablehighthroughputtransfersiscritical.Inthistalkresultsfromactiveandpassivemonitoringanddirectmeasurementsofthroughputwillbereviewed.Methodsforachievingtheambitiousrequirementswillbediscussed.

简介：

简介：

简介：

简介：Wepresenttheworkflowofthedesign,realizationandtestingofdeformablemirrorssuitableforhighpowerdiodepumpedsolid-statelasers.Itstartswiththestudyoftheaberrationtobecorrected,andthenitcontinueswiththedesignoftheactuatorspositionandcharacteristic.Inthispaper,wepresentandcomparethreedeformablemirrorsrealizedformulti-Jlevellaserfacilities.Weshowthatwiththesamedesignconceptitispossibletorealizedeformablemirrorsforothertypesoflasers.Asanexample,wereporttherealizationofadeformablemirrorforfemtosecondlasersandforaCWCO2laser.

简介：TheALICEdetectoratLHC(CERN),willrecordrawdataatarateof1.2Gigabytespersecond.TryingtoanalyseallthisdataatCRNwillnotbefeasible.AsoriginallyproposedbytheMONARCproject,dtacollectedatCERNwillbetransferredtoremotecentrestousetheircomputinginfrastructure,Theremotecentreswillreconstructandanalysetheevents.andmakeavailabletheresults.Thereforehigh-ratedatatransferbetweencomputingcentres(Tiers)willbecomeofparamountimportance.ThispaperwillpresentseveralteststhathavebeenmadebetweenCERNandremotecentresinPadova(Italy),Torino(Italy),Catania(Italy),Lyon(France),Ohio(UnitedStates),Warsaw(Poland)andCalcutta(India),Thesetestsconsisted,inafirststage,ofsendingrawdatafromCERNtotheremotecentresandback,usingaftpmethodthatallowsconnectionsofseveralstreamsatthesametime.Thankstothesemultiplestreams,itispossilbletoincreasetherateatwhichthedataistransferred.Whileseveral"multiplestreamftpsolutions"alreadyexist,ourmethodisbasedonaparallelsocketimplementationwhichallows,besidesfiles,alsoobjects(oranylargemessage)tobesendinparallel.Aprototypewillbepresentedabletomanagedifferenttransfers.Thisisthefirststepofasystemtobeimplementedthatwillbeabletotakecareoftheconnectionswiththeremotecentrestoexchangedataandmonitorthestatusofthetransfer.

简介：Laserresistanceandstress-freemirrors,windows,polarizers,andbeamsplittersupto400mm×400mmarerequiredfortheconstructionoftheseriesSGfacilities.Inordertoimprovethecoatingquality,aprogramhasbeeninplaceforthelasttenyears.Forthesmall-aperturepick-offmirror,thelaser-induceddamagethreshold(LIDT)isabove60J/cm2(1064nm,3ns),andthereflectedwavefrontislessthanλ/4(λ=633nm).TheBrewster-anglepolarizingbeamsplitter(Φ50×10mm)showsthebestLIDTresult,upto29.8Jcm2(1064nm,10ns)forap-polarizedwaveinthe2012damagecompetitionoftheXLIVAnnualBoulderDamageSymposium.Forthelarger-aperturemirrorandpolarizer,theLIDTisabove23Jcm2(1064nm,3ns)and14Jcm2(1064nm,3ns),respectively.Thereflectedwavefrontislessthanλ/3(λ=633nm)attheusedangle.

简介：TheALICEexperiment[1]attheLargeHadronCollider(LHC)atCERNwilldetectupto20,000particlesinasinglePb-Pbeventresultinginadatarateof-75MByte/event,Theeventrateislimitedbythebandwidthofthedatastoragesystem.Higherratesarepossiblebyselectinginterestingeventsandsubevents(HighLeveltrigger)orcompressingthedataefficientlywithmodelingtechniques.Bothrequireafastparallelpatternrecognition.OnepossiblesolutiontoprocessthedetectordataatsuchratesisafarmofclusteredSMPnodes,basedonoff-the-shelfPCs,andconnectedbyahighbandwidt,lowlatencynetwork.

简介：Apreliminaryinvestigationonshort-wavelengthablationmechanismsofpoly(methylmethacrylate)(PMMA)andpoly(1,4-phenyleneetherether-sulfone)(PPEES)byextremeultraviolet(EUV)radiationat13.5nmusingatable-toplaserproducedplasmafromagas-pufftargetatLLG(Gttingen)andat46.9nmbya10HzdesktopcapillarydischargelaseroperatedattheInstituteofPhysics(Prague)ispresented.Ablationofpolymermaterialsisinitiatedbyphotoinducedpolymerchainscissions.TheablationoccursduetotheformationofvolatileproductsbytheEUVradiolysisremovedasanablationplumefromtheirradiatedmaterialintothevacuum.Ingeneral,cross-linkingofpolymermoleculescancompetewiththechaindecomposition.Bothprocessesmayinfluencetheefficiencyandqualityofmicro(nano)structuringinpolymermaterials.WavelengthisacriticalparametertobetakenintoaccountwhenanEUVablationprocessoccurs,becausedifferentwavelengthsresultindifferentenergydensitiesinthenear-surfaceregionofthepolymerexposedtonanosecondpulsesofintenseEUVradiation.

简介：

简介：

简介：同居就是不麻烦和麻烦的综合体，省略了结婚的种种烦琐，可同一屋檐下的两人生活也是五花八门。脏衣服．抢厕所、购物、做夜宵……单身时候所有的问题衍生成了两个单身凑对的共同问题，虽说要坚持独立自主的原则，可弄不好就会擒出翻无覆地的状况，尤其是对于“MONEY”的打理，最好别用爱谁谁的态度．只需要用一点小计划，二人世界就能过得很滋润。

简介：Inthispaper,auniformanalysisoftheasymptoticpropertiesofhighfrequenciesofnon-uniformbars,beamsandcircularmembranesisgivenbyusingperturbationmethod,andthecaseofdiscontinuousphysicalparametersisalsodiscussed.

简介：

简介：Whenexposedtointenseelectromagneticfields,thequantumvacuumisexpectedtoexhibitpropertiesofapolarizablemediumakintoaweaklynonlineardielectricmaterial.Variousschemeshavebeenproposedtomeasuresuchvacuumpolarizationeffectsusingacombinationofhigh-powerlasers.Motivatedbyseveralplannedexperiments,weprovideanoverviewofexperimentalsignaturesthathavebeensuggestedtoconfirmthispredictionofquantumelectrodynamicsofrealphoton–photonscattering.