学科分类
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5 个结果
  • 简介:检测与宇宙的光线的仍然神秘的来源联系的中微子随IceCube的结束到达了一个新分水岭,有到期望的流动的敏感的第一个察觉者。在这评论,我们将简短为构造公里规模中微子察觉者重游基本原理并且总结这块地的地位。

  • 标签: 中微子天文学 中微子探测器 宇宙射线 检测器 分水岭 灵敏度
  • 简介:AnanalysisonthepropertyofSelf-ScalingRankOneUpdate(SSR1)isgiven.Inviewofit,weexplorewhethertheSSR1updatewithoutusingexactlinesearchpossessesthefiniteterminationpropertywhenitisappliedtominimizeapositivedefinitequadraticobjectivefunction.

  • 标签: quasi-Newton finite termination INEXACT line search
  • 简介:InthisupdatereportaboutanObjectOriented(OO)trackreconstructionmodel,whichwaspresentedatCHEP'97,CHEP'98,andCHEP'2000,weshalldescribesubsequentnewdevelopmentssincethebeginningofyear2000.TheOOmodelfortheKalmanfilteringmethodhasbeendesignedforhighenergyphysicsexperimentsathighluminosityhadroncolliders.IthasbeencodedintheC++programminglanguageoriginallyfortheCMSexperimentatthefutureLargeHadronCollider(LHC)atCERN,andlaterhasbeensuccessfullyimplementedintothreedifferentOOcomputingenvironments(includingthelevel-2triggerandofflinesoftwaresystems)oftheATLAS(anothermajorexperimentatLHC).Forthelevel-2triggersoftwareenvironment.weshallselectivelypresentsomelatestperformanceresults(e.g.theB-physicseventselectionforATLASlevel-2trigger,therobustnessstudyresult,ets.).Fortheofflineenvironment,weshallpresentanew3-Dspacepointpackagewhichprovidestheessentialofflineinput.AmajordevelopmentafterCHEP'2000istheimplementationoftheOOmodelintothenewOOsoftwareframeworkAthena"ofATLASexperiment.ThenewmodularizationofthisOOpackageenablesthemodeltobemoreflexibleandtobemoreeasilyimplementedintodifferentsoftwareenvironments.Alsoitprovidesthepotentialtohandlethemorecomlpicatedrealisticsituation(e.g.toincludethecalibrationcorrectionandthealignmentcorrection,etc.)Somegeneralinterfaceissues(e.g.designofthecommontrackclass)ofthealgorithmstodifferentframeworkenvironmentshavebeeninvestigatedbyusingthisOOpackage.

  • 标签: 数据处理 目标取向 轨迹重造 LHC实验
  • 简介:我们执行驾驶的限制顺序的数字模拟SergiMalsov(SM)为probality分发和投标问传播和引号更改频率U的自相关功能建模并且调查。为probality分发,模型sucessfully复制传播的幂定律延期和引号更改频率的exponenetial腐烂。为自相关功能,传播和模型的引号更改频率由一条幂定律腐烂,它与实验学习一致。我们获得幂定律为传播的代表0.54,它在对真实金融市场的好同意。

  • 标签: 频率 数学模型 功率定律 电子学