简介:UpgradeofGoosyDataAcquisitionSystem¥WangShujin;WangYanyu;XingJianping;GuoTianruiandJiaoDunpangAdataacquisitionsystemnamedGoos...
简介:TheBaBardataacquisitionsystem(DAQ)transportsdatafromthedetectorfrontendeletronicstoshorttermdiskstorage.Amonitoringapplication(VMON)hasbeendevelopedtomonitortheonehundredandninetycomputersinthedataflowsystem.PerformanceinformationforeachCPUiscollectedandmulticastacrosstheexistingdatatransportnetwork.ThepacketsarecurrentlycollectedbyasingleUNIXworkstationandarchived.AROOTbasedGUIprovidescontrolanddisplaystheDAQperformanceinrealtime.ThesameGUIisreusedtorecoverarchivedVMONdata,VMONhasbeendeployedandconstantlymonitorstheBaBardataflowsystem.Ithasbeenusedfordiagnosticsandprovidesinputtomodelsprojectingfutureperformance.Theapplicationhasnomeasurableimpactondatataking,respondsinstantaneouslyonthehumantimescaletorequestsforinformationdisplay,andusesonly3%ofa300MHzSunUltra5CPU.
简介:Powerfulmainstreamcomputingequipmentandtheadventofaffordablemulti-Gigabitcommunicationtechnologyallowustotackledataacquisitionproblemswithclustersofinexpensivecomputers.Suchnetworkstypicallyincorporateheterogeneousplatforms,real-timepartitionsandcustomdevices.Therefore,onemuststriveforasoftwareinfrastructurethatefficientlycombinesthenodestoasingle,unifiedresourcefortheuser,Overallrequirementsforsuchmiddlewarearehighefficiencyandconfigurationflexibility.IntelligentI/O(I2O)isanindustryspecificationthatdefinesaunifrommessagingformatandexecutingmodelforprocessor-enabledcommunicationequipment.Mappingthisconcepttoadistribultedcomputingenvironmentandencapsulatingthedetailsofthespecificationintoanapplication-programmingframeworkallowustoproviderun-timesupportforclusteroperation.Thispapergivesabriefoverviewofaframework.XDAQthatwedesignedandimplementedatCERNfortheCompactMuonSolenoidexperiment'sprototypedataacquisitionsystem.
简介:TheCDFexperimentattheFermilabTevatronhasbeensignificantlyupgradedforthecolliderRunⅡ,whichstartedinmarch2001andisscheduledtoalstuntil2006,Instantaneousluminositiesof10^32cm^-2S^-1andaboveareexpected.Adataacquisitionsystemcapableofefficientlyrecordingthedatahasbeenoneofthemostcriticalelementsoftheupgrade.Keyfiguresaretheabilititytodealwiththeshortbunchspacingof132ns.eventsizesoftheorderof250kB,andpermanentloggingof20MB/s,Thedesignofthesystemandexperiencefromthefirstmonthsofdata-takingoperationarediscussed.
简介:TheANTAREScollaborationisbuildingadeepunderwaterneutrinotelescopetobeimmersedintheMediterraneanSea40kmofftheFrenchcoast.ThisdetectorwillbeabletodetecttheCherenkovlightemittedbymuonsproducedinneutrinointeractionsusingathree-dimensionalmatrixofopticalsensors,Thetelescopewillbemadeofnearly1000oftheseelementaryunitsdistributedoverawideareaofabout0.1km2atanaveragedepthof2400mInordertoreachasub-nanosecondresolutiononlighpulsedetection,signalsfromallOMsareanalyzedanddigitizedlocallybeforebeingsenttoshorethrougha50kmelectro-opticalcable,Front-endelectronics,timealignment(clockdistribution),TriggeringanddataacquistitionforsuchalargeandremotedetectorrepresentarealhallengeandrequiredconsiderableR&Dstudies,Thetechnicalsolutionsadoptedbythecollaborationwillbedescribedandtheirperformancesdiscussed.
简介:FormorethanoneyeartheCLEOⅢexperimentattheCornellelectronpositronstorageringCESRhasaccumulatedPhysicsdatausinga4layersiliconvertexdetectorandanovelringimageCherenkovdetector,alongwithaconventionalDriftchamber,E.M.calorimeterandmuonchambers.BythetimeofCHEP2001theexperimenthasaccumulated10fb^-1ofdata,Thereadoutandmonitoringsystemscontrol,ca.400000electronicchannels.Detectorconfiguration.dataqualityandcomponentmonitoring,runcontrolareonlysomeoftheSlowControltasksthathavetobeperformed.DeployingindustrystandardssuchasCORBA(inter-platformcommunication)Java(remoteaccessviaWebbrowser)andObjectivity(eventandconstantsdatabse)asbuildingblocksofthecomputernetworkhasbeenofcentralimportance.Objectorienteddesignhasenabledtheseamlessintegrationofthemanyindividualcomponents.Inourpresentationwewilldescribeexperienceswiththisdistributedcontrolsystemandgiveareportofthemeasurestakentoobtainahighsystemavailability.
简介:SNDisasphericalnon-magneticdetector,whichoperatedsince1996atVEPP-2Melectron-positroncolliderinNovosibirsk.NowVEPP-2McolliderisdismantledtobereplacedbyanewVEPP-2000machinewithhigherenergyandluminosity.TheSNDdetectorisalsoperformingupgradeofitssubsystemsincludingelectronics,andsoftware,ExpectedsubstantialgrowthofeventsdataflowrequiresradicalchangesintheDataAcquisition(DAQ)systemsoftware.ThispaperdescribestheSND2000softwarearchitecrureanditsprincipalcomponents.Firstthemaineventsflowprocessuingcomponentsareconsidered-thereadoutprocessandtheL3-triggerfarm.AfterprocessingbyL3theeventsflowiseitherloggedtotapeorfedtocalibrationandslowcontrolprocess.Usingauxiliarycontrolandservicesoftwarecomponents,whicharealsodescribed.performsthemanagementoftheseactivities.
简介:Tomeettherequirementoflong-timeacquisitionwithoutinterruptionsfortheplannednucleardecayexperimentsatCSRe,anewdataacquisitionsystemhasbeensuccessfullydevelopedin2016.DuringthebeamtimeinDec.2016,ournewsystemhasbeenrunningstablywithoutanyproblemsandcontinuouslyacquiringhundredsofdatawithoutanybreaks.Thewholesystemisbasedonaspectrumanalyzer(R&SFSVR7)andanIQrecorder(R&SIQR100).BothofthemareconnectedtoaserverviaEthernet.Thespectrumanalyzeracquiresthetime-domaininformationinthefrequencyrangeofinterestfromtheSchottkyresonator.TheIQrecordercollectstheinformationfromtheanalyzerandpacksitintodata.Oncethedatahavebeenentirelytransferredtotheserver,itwillimmediatelyberemovedfromIQrecorder.Thehigh-volumesolid-statedrive(1TB)ofIQrecorderallowsforavirtuallyunlimitedsizeofacquiredlestobestoredinpractice.Besides,inordertobypasstheunreliabletriggersystemofIQrecorder,webuiltanindependenttriggersystemwithamicrocontroller(ArduinoYun)totranslatetheTTLsignaltonetworkcommands.
简介:TheDAQhardwareoftheISTRA+experimentconsistsoftheVMEsystemcratethatcontainstwoPCI-VMEbridgesinterfacingtwoPC'swithVME,externalinterruptsreceiver,thereadoutcontrollerfordedicatedfront-endelectronics,theread-outcontrollerbuffermemorymodule,theVME-CAMACinterface,andadditionalcontrolmodules,TheDAQcomputingconsistof6PC'srunningtheLinuxoperatingsystemandlinkedintoLAN.ThefirstPCservestheexternalinterruptsandacquiresthedatafromfront-endelectronics,Thesecondoneistheslowcontrolcomputer.TheremainingPC'shostthemonitoringanddataanalysissoftware.TheLinuxbasedDAQsoftwareprovidestheexternalinterruptsprocssing,thedataacquisition,recording,anddistributionbetweenmonitoringanddataanalysistasksrunningatDAQPC's.Themonitoringprogramsarebasedontwopackagesfordatavisualization:home-writtenonandtheROOTsystem.MySQlisusedasaDAQdatabase.
简介:TostudytheinteractionbetweentheplasmaandwaveintheLHCDandECRHexperimentsonHL-2A.Itisnecessarytocontroltheexperimentsbycomputerinordertocarryontheexperimentseasilyandsafely.ThemaintaskofthecomputercontrollingsystemfortheLHCDexperimentinHL-2Aistomonitorthewholesystemoperation,
简介:WefallintodisusetheJUHUsystembasedonthePDP/11computerforRSX11Moperationsystem,andupdateourmulti-parameterdataaequisitionandanalysissystem’shardwareandsoftwarebasedonVAXIIcomputerandOpenVMSoperationsystem,makeitadaptedtotherecentphysicsexperiment.Inthispaper,wedescribetheupdatedinulti-parameterdataacquisitionandanalysissystem’shardware,softwareconfigurationandsystemfunction.