第14届国际超高能宇宙线相互作用学术会议情况汇报

第14届国际超高能宇宙线相互作用学术会议情况汇报马宇倩中国科学院高能物理研究所2025/1/292006年高能物理年会1关于ISVHECRI超高能宇宙线领域的重要系列会议：展示和交流在超高能宇宙线相互作用研究领域的重要成果或重大项目的进展情况（国际超高能宇宙线相互作用研讨会ISVHECRI），重点能区：能量在1014eV以上的超高能原初宇宙线相互作用模型和超前区物理。

1980年在俄罗斯，第1届，开始于乳胶室研究的需要。1986年在北京，第4届（当时的的大会总结报告中曾经提到:通过这次会议才知道中国人也在研究宇宙线。）2001年（CERN），2003年（Greece），第12，13届，转向CR与加速器物理在高能相互作用，超前区物理上的交流，课题扩展2006年，LHC投入运行前的最后一次会议－－UHCR领域太需要

Accelerator的实测结果了。目的明确，重点突出。本次会议首次成为IUPAPsponsored

conference，2006年度，C－type会议文集为正式SCI刊物”NuclearPhysicsB（Proc.Suppliment）”

（1977年后）屈原（公元前324年－公元前278年）天问：“上下未形，何有考之？阴阳三合，何本何化？”意思是如何能考证清楚天地是怎样形成的？阴阳组合而形成的万物，什么是基本的，什么是衍生出来的？会议组织主办单位：国际纯粹物理和应用物理学会（IUPAP）中国科学院（CAS）中国国家自然科学基金委（NSFC）中国物理学会，中国高能物理学会中科院高科技中心中国科学院高能物理所山东大学承办单位：中国科学院高能物理所山东大学XIVInternationalSymposiumonVeryHighEnergyCosmicRayInteractions

Weihai,China,August15-22,2006InternationalAdvisoryCommittee(IAC)，13

AlanA.Watson(Leeds,UK,Chairman)ZhenCao(Beijing,China)RalphEngel(Karlsruhe,Germany)MasakiFukushima(Tokyo,Japan)TomGaisser(Bartol,USA)PaoloLipari(INFN,Italy)BryanPattison(CERN,Geneva)OscarSaavedra(Torino,Italy)EdisonShibuya(Campinas,Brasil)PierreSokolsky(Utah,USA)SergeySlavatinsky(Moscow,Russia)SureshTonwar(Mumbai,India)RicardoVazquez(Spain)LocalOrganizingCommittee(LOC)，17YuqianMA(IHEP,Chairman)MaoHE(ShandongUniversity,Co.Chairman)JinCHANG(PurpleMountainObservatory)HeshengCHEN(IHEP)K.S.Cheng(HongkongUniversity)TiejunDENG(IHEP,

AdministrativeSecretary)HuihaiHE(IHEP)HongboHU(IHEP)JinYuLI(ShandongUniversity)TanLU(PurpleMountainObservatory))XinhuaMA(IHEP)XianruMENG(TibetUniversity)HuanyuWANG(IHEP)ZhiguoYAO(IHEP)LiZHANG(YunnanUniversity)XueYaoZHANG(ShandongUniversity)QingqiZHU(IHEP,ScientificSecretery)会议简况到会正式代表130人来自美、日、俄、德、意、法等世界19个国家的研究人员85人来自中国大陆、香港、台湾等地区的研究人员45人共安排会议报告和讨论133人次

11invitedtalk（3summary）

35Highlighttalk59contributedtalk20postersothers（Lattessection，memtoLuZhen，Slavatinsky，etc）特邀报告和亮点报告均由国际顾问委员会（IAC）和LOC提名和邀请，数量多、质量高，突出反映了会议主题，涵盖了国际上所有与超高能相互作用研究相关的大型国际合作项目。参加人数和提交报告的数量超出预计

ISVHECRI2006：ProgramAcceleratorDataonHadronicInteractions

（14）ModelsandTheoriesofHadronicInteractions（13）EmulsionChamberandSpace/BalloonBorneCosmicRayExperiments

（17）UHECosmicRays,ExoticPhenomenaandDarkMatter（16）

VHECosmicRays:MeasurementofAirShowerSecondaries

（24）OriginofCosmicRays,Gamma/NeutrinoAstrophysics

（26）SummaryoftheSymposium

（3）

Posters

（20）Total：133宇宙线物理学家的期望开设了专题，邀请了CERN，FemiLab等加速器相关领域的专家到会，交流和探讨在粒子物理和宇宙线物理共同感兴趣的领域如高能粒子相互作用和朝前区物理等方面已有的成果和今后打算。宇宙线物理学家对于LHC及其相关实如高能粒子相互作用和朝前区物理等方面已有的成果和今后打算。宇宙线物理学家对于LHC及其相关实验（CMS,ATLAS,TOTEM,LHCf,MIPP）在测量高能粒子相互作用和朝前区物理研究方面可能做出的贡献表示了极大的兴趣和期望。为此会议安排了三分之一的时间，比较突出讨论了加速器(例如ISR，SPS,Tevatron,RHIC,HERA,LHC)实验的有关结果和强子多重产生的现代理论模型(例如QCDpartonladder模型,QCDminijet模型)，强调完善宇宙线实验中不可缺少的强子蒙特卡洛产生器的必要性。共22invited/highlighttalksCosmicRaysandAcceleratorsAlbertDeRoeck(CERN)ISVHECRIWeihai,15-22August2006LHCforwardphysicsprojects

andsummaryofacceleratorexperimentsppandepcolliderexperiments:presentandfutureHERATevatronLHCHeavyIonCollisions(RHIC/LHC)FixedtargetexperimentsForwardDetectorsatHERARomanpotsandforwardcalorimeterforneutrals

HERAandtheLHC

2ndworkshopontheimplicationofHERAforLHCphysics

ADRCERN)&H.Jung(DESY)Nextmeeting:March07(DESY)CosmicRayCommunityWelcome!LastMeeting:plenarytalkofR.EngelHERAwillfinishmid2007.Didweforgetsomething?ZDC@140mCASTORT13.1<<4.7T25.3<<6.7Castor5.25<<6.5Extendthereachinfrom||<5to||<6.7+neutralenergyatzerodegreesForwardDetectorsinIP5:CMS/TOTEMLHCf:anLHCExperimentforAstroparticlePhysicsLHCf:measurementofphotonsandneutralpionsandneutronsintheveryforwardregionofLHCAddanEMcalorimeterat140mfromtheInteractionPoint(IP1ATLAS)ForlowluminosityrunningPossibleForwardMeasurementsEnergyflowathighpseudorapidity(~6.7)Transverseenergy(limited)Total/inelasticcrosssectionsFractionofdiffractivedissociationParticlemultiplicitiesElectrons,photons,hadronsJetsmorelimited(acceptance)(muonsmaybeinlimitedregionwithadditionaldetectors,seeH.JungetalHERA/LHCworkshop)AlleventsSinglediffractiveV.Popov,R.Engel,T.DovaFullsimulationMeasurementsforhadronicmodelsR.EngelMeasurementsforhadronicmodelsMeasurementsforhadronicmodelsPredictionsintheforwardregionwithintheCMS/TOTEMacceptanceSummaryCRcommunity“needs”getmoreregularlyintegratedinprogramsofnewexperiments(LHC,MIPP,NA49upgrade,HARP…)LHCdetectorscanoffermeasurementsofthetypewantedbytheCRcommunity.Someextensionsstillunderdiscussionandwouldneedadditionalfundsandmanpowertobecompleted.CRcommunityshouldconsidertomoreactivelyparticipateintheseexperimentsExampleLaPlata/BuenosAiresgroup(T.Dovaetal)ParticipateinAugerandinATLASwiththeoneoftheaimstomeasurediffractive/forwardcrosssections,joinedlastyear.LHCexperimentsarestillopentonewgroups.Definitelystillroomandideastoincreasetheforwardaccpetance.MIPPlookingforaditionalcollaborators.NA49upgrademayneedthesupporttogetapprovedMaybetimetorevisetheneedslist?Whathas/willbemeasuredwithsufficientaccuracy?Whatwouldneedtobeimproved?Whatnewmeasurementswouldbeneeded(eg.HERA,beforeclosingdown)

MCresultscomparingL3+C

andothersmeasurementRedline:thiswork,10%errorofprimaryspectrumtakenaccountMCresultfromCosikahadbeenpresentedbyPierreLeCoultreforL3+C,onNOON,2002TheATLASapproachistomeasureelasticscatteringdowntosuchsmallt-valuesthatthecrosssectionbecomessensitivetotheEMamp.viatheCoulombinterferenceterm.LHCmeasurementofsTOTexpectedtobeatthe1%level–usefulintheextrapolationuptoHECRenergiesThep-ptotalcross-section10%differenceinmeasurementsofTevatronExpts:JamesL.PinfoldIVECHRI200614(logs)

相关的大型宇宙线国际合作项目的进展

几个主要项目(AGASA,HiRes,Yakutsk和Auger)之间在极高能区粒子能量测量是否存在GZK截断的问题上的分歧都有所缩小，但是对膝区宇宙线成分的推断所依赖的模型问题仍未解决。各实验组(羊八井ASγ,KASCADE,GRAPES，Chacaltaya-帕米尔，KANBALA，BAKSAN,CosmoALEPH)之间的尖锐差异依旧存在。

与会者提出了一些解决这个难题的新实验(SPHERE,ARGO,IceTop,LOPES,TA,CRTNT,GAMMA)和新思路

报道了初级宇宙线空间测量(BESS,ATIC,JEM/EUSO,CREAM,HEGAT-DMS),大气中微子振荡(Super-K)，寻找宇宙线中微子源(IceCube/AMANDA)和甚高能宇宙线gamma点源(MAGIC,SHALON)的最新进展

少数关于奇异事例的研究报告。

代表反映，能在一次会议上获得有关项目的这么全面的信息，很受启发，收获很大。共24invited/highlighttalksParticlePhysicstalkswerereallyexcellent

-astandardtoemulatebymanyspeakersNewawarenessofcosmicrayswithintheparticlephysicscommunity

PierreAugerhadaclauseinsertedintotheCERNchartertoincludethestudyofcosmicraysImportantissuesareINPUTOFREALDATAthroughRHICandexistingfixedtargetandcolliderdata,PLUSthepromiseofFORWARDPHYSICSatLHCandstudiesofPIONINTERACTIONSatFNAL

Knee(~1015eV)Iparticle/(m2year)Proton-(anti)Protoncross-sections–importantformeasuringextensiveairshowerdevelopment(EAS),everyprimaryparticleproducesanEASJamesL.PinfoldIVECHRI20064SpencerKlein:LessonsforCosmic-RaystudiesShadowing/Saturation/coloredglasscondensatereduceseffectivepartondensitiesatlow-xReducedforwardparticleproductionUncleareffectoninelasticityHowisenergyflowaffected?Strangeparticleproductionriseswithsystemsize,andisfullyequilibratedforion-ioncollisionsMediumpTbaryonsenhancementmaybesignificiantCosmic-rayions-N2are‘perfectliquid’interactionsLesshighpTparticleproductionthanforp-N2collisionsSomephenomenacouldchangeathighenoughenergies.ObservedeffectsvarysmoothlywithcollisionNpartCanpredictforHe-N,C-N…collisions,atleastatRHICenergiesCaution–p-AmightbeanomaloushereMIPP(MainInjectorParticleProduction)atFNAL

Beamsof,K,pbothchargesfrom5GeV100GeV,tomeasureparticleproductiononnuclei~FullacceptanceMIPupgradeIncreasedatatakingratebyafactor100IncreaseacceptanceinthebackwardregionLowerbeammomenta/K0andneutronbeams30NucleifromH2UEGN2isonthelistLookingforinterestedcollaboratorstojoinfortheanalysis/datatakingTimeline:runendof2006inupgrademodewiththecurrentbeamMIPP-likeexperimentat1TeVbeam?RajendranRajaForwardPhysicsDetectorsattheLHCCMS/TOTEMCASTORZDCCalorimeterLHCfandothersattheLoIstageLHCf:anLHCExperimentforAstroparticlePhysics:wisdomofKakenhiagencyinJapanLHCf:measurementofphotonsandneutralpionsandneutronsintheveryforwardregionofLHCAddinganEMcalorimeterat140mfromtheInteractionPoint(IP1ATLAS)ForlowluminosityrunningDeviationsofdatafromE-3linethroughfirstpointofAugerdataaaw/Oct2005x3

Relativefractionsofp,HeandCNOaredependentonmodelBUT–breakinpis~600TeVandinHeat~1200TeVVerydifferentfromtheTibetresult(~100TeV)(AfterUlrich’stalk)Myconclusions

Tibetdataarestatisticallylimited(177eventsin3years)andrequireanunderstandingofemulsionchambers

GRAPES

datashouldbeanalysedusingKASCADEmethodsofdeconvolution

KASCADEgroupshouldshowtheirresultsalongwithdirectmeasurements.Thesearenot‘perfect’rightnowbutbetterdatawillcomeandtheymay‘guidethethoughts’.TheKASCADEdataarenotperfecteither!

Whatwilltheconclusiononcompositionbe:KASCADEandGRAPESorTibet?Doweneedhadronicinteractionmodelstofindout?中国物理学家的贡献中国学者共做7invited/highliat,11oral，11posters邀请报告：

«银河系磁场测量的最新结果»（国家天文台韩金林）«L3+C宇宙线研究»（高能所姚治国）«北京极高能宇宙线中微子会议总结和CRTNT项目预先研究»,（高能所曹臻）«空间高能电子测量»（紫金山天文台常进）«来自银河系正负电子湮灭的gamma线»（香港大学郑广生）«超对称理论现状和展望»（理论所刘纯）

«用中微子望远镜探测振荡和惰性中微子的混合图像»

（高能所邢志忠）其他：如：«改进羊八井现有实验设备研究强碰撞极端朝前区强子行为»

（高能所丁林垲）等亦获得与会者极大兴趣。SpatialEnergyspectrumRadialdependenceConclusiveRemarks:Moredataneeded

--

PulsarRMsarepowerfulprobes

HalofieldDiskfield银河系磁场结构（韩金林）HighEnergyEmissionfromtheGalacticCenter–

e+/e-

Annihilation

（KSCheng，HKU）WesuggestthatthecaptureofstarsbytheGalacticBHisapossiblemechanismtoproducetheobservedTeV,GeVand511KeVannihilationlinesviahadroniccollisionsTherepeatedcapturemodelisthemostplausibleone,inwhichtheprotoncollisiontimescaleismuchshorterthanthethermalizationtimescaleofpositronsinordertoexplaintheannihilationrateof1043e+/sduetothescreeningeffectofclouds.Becausethegamma-rayemissionisdirectdecayofneutralpiontheintensityofgamma-raysshouldcorrelatewiththehigherdensity

ThismodelpredictsthatsomenearbynormalgalaxiescouldbecandidatesofEGRETunidentifiedsourcesduetothesamemechanismAboutFuture会议讨论了ISVHECRI系列会议今后的方向，比较一致的意见是：组织形式上需要变革；会议内容方面既要扩展，容纳各种观测手段；又要集中，保持以“超高能宇宙线的相互作用”为主线；加强与加速器测量队伍的联系和交流。变革的具体方案将在会后进一步讨论落实。关于会务本次会议除三名专职会务人员（外事、会计、会务各一名）外，所有会务工作均由LOC秘书组、高能所和山东大学的科研人员、研究生承担。会议秘书组在申请IUPAPsponsorship，调整和组建I