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CEPCDetectorStatus&TasksforCDR
YuanningGao(TsinghuaUniversity)
IASProgramonHighEnergyPhysics,HKUST,4-29Jan2016
OnBehalfoftheCEPC-SppC Studygroup
Overview
Organizers
Participants
Activities- Program- Conference
- White Papers
Past HEP Programs- 2015
- 2016
Venue
Registration
Accommodation
Information for Visitors
Contact Us
Program Schedule
Updated as 20 January 2017
Dates: 9-26 January 2017
Venue: HKUST Jockey Club Institute for Advanced Study, Lo Ka Chung Building, Lee ShauKee Campus, HKUST
Week 1 | Week 2 | Week 3 (Conference Week)
Week 1
Date Time Venue Event
9 Jan (Mon) 09:00-18:00 IAS2042(2/F)
[Special Event] "Gravitational Cosmology" Meeting (Details)
11 Jan (Wed) 10:30-12:00 IAS2042(2/F)
Talk: "An Overview on Weak Gravity Conjecture"William Cottrell (University of Wisconsin - Madison)(Click here for presentation file)
14:00-15:30 Talk: "Physics of Cosmological Collider"Yi Wang (The Hong Kong University of Science andTechnology)(Click here for presentation file)
12 Jan (Thu) 10:30-12:00 IAS2042(2/F)
Talk: "Top-tagging at the Energy Frontier"Minho Son (Korea Advanced Institute of Science andTechnology)(Click here for presentation file)
14:00-15:30 Talk: "Higgs Precision and Top Quark EFT constraints atCEPC"Zhen Liu (Fermi National Accelerator Laboratory)(Click here for presentation file)
13 Jan (Fri) 10:30-12:00 IAS2042(2/F)
Talk: "The 2nd Hyper-Kamiokande Detector in Korea"Seon-Hee Seo (Seoul National University)(Click here for presentation file)
14:00-15:30 Talk: "Calorimeter Technologies for Future Colliders"Peter Loch (University of Arizona)(Click here for presentation file)
Week 2
Date Time Venue Event
16 Jan (Mon) 10:30-12:00 IAS2042(2/F)
Talk: "R&D with the Prototype of TPC for the FutureMachines"Serguei Ganjour (CEA-Saclay) (Click here for presentation file)
Outline
• Performancerequests• StatusandgoalsfordetectorR&D• Urgenttasks• PlanforCDR• Summary
YuanningGao,CEPCDetector
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IP1�
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CEPC Collider Ring(50Km)�
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PhysicsProgramatCEPC
• Baseline- 10#𝐻 @240GeV- 10&'(&&𝑍 @~91GeV- 10#(*𝑊,𝑊( @~160GeV
(w/beamenergymeasurement)• Upgradephases(optional)
- high luminosityZ-polephysics,10-.(-# cm-2s-1
- polarizedbeam(s)forZ,W- 𝑡𝑡̅ at~350GeV- …
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AdetectoratCEPC
• Thedetectordesigncouldbenefitfrom20+years’world-widestudiesforILC
• Performancerequests:
➣ extremelygoodspaceresolution➣ lowmaterialbudget
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PerformancerequirementsofILCdetectors
YuanningGao,CEPCDetector
• Vertexing– ~1/5rbeampipe,~1/30pixelsize(wrt LHC)
• Tracking– ~1/6material,~1/10resolution(wrt LHC)
• Jetenergy(Higgsself-coupling,W/Zseparation)– ~1/2resolution(wrt LHC)
3/ 25 10 / sinip m m ps µ µ q= Å
5(1/ ) 5 10 /GeVps -= ´
/ 0.3/ ( )GeVE E Es =
€
(h → bb ,cc ,τ +τ−)
€
(e+e− → Zh→ +−X; incl. h→ nothing)
or better
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AdetectoratCEPC
• Thedetectordesigncouldbenefitfrom20+years’world-widestudiesforILC
• Performancerequests:
➣ precisetracking,lowX0
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AdetectoratCEPC
• Thedetectordesigncouldbenefitfrom20+years’world-widestudiesforILC
• Performancerequests:
➣ high granularitycalorimeters➣ ParticleFlowAlgorithm(PFA)➣ lessdemandingwrt ILCdetectors
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ILD-likedesigninPreCDR
• ILD-like design asareferenceforfeasibilitystudies
- NewMDIdesign with ashorterL*=1.5m- Siliconpixelvertexdetector,striptrackers- TPCasmaintrackingdevice- Bfield3.5T- Veryhighgranularity
ECAL(0.5cmx0.5cm)HCAL(1.0cmx1.0cm)
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ILD-likedesigninPreCDR
• Notsoobviousthechallengingissuescouldberesolved…
• beamstructure- detectorcooling- vertexdetectorreadout- ionfeedbackinTPC
• Zpole- eventrate(<1kHz)- hermeticity ?- 𝜋/𝐾 separation?
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StrategiesforstudiesafterPreCDR
• Exploretechnologiesforeachsub-detectorcouldreachtheperformancerequests:ILDisjustareference
• StartingcriticalR&DlistedinPreCDR
• Meanwhile keep inmindthemachinehasnotbeenfullydefinedyet…
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VertexdetectorR&D:StatusandPlan• R&Dtarget:stillnotreachtherequest,1st step
• CMOSPixelsensor(CPS)
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VertexdetectorR&D:StatusandPlan• 1stCPSprototypedesign
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VertexdetectorR&D:StatusandPlan• 2ndCPSprototypedesign
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TPCstudies:StatusandPlan• Target
- understandtheeffectofionfeedback- GEM+Micromegas tosuppressionbackflow(0.1%)
2017-01-23 YuanningGao,CEPCDetector 13
TPCstudies:StatusandPlan• Target
- understandtheeffectofionfeedback- GEM+Micromegas tosuppressionbackflow(0.1%)
2017-01-23 YuanningGao,CEPCDetector 14
TPCstudies:StatusandPlan• Preliminaryresultsfromsimulationstudies
- ionbacksuppressionto0.1%ispossibleà beamtestin2017-2018withGEM+Micromegas module
- occupancyisverylowevenforZ-pole- distortionbyionsacceptableupto10-4cm-2s-1
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Calorimeters:StatusandPlan• CALICEstudies
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ECALR&D:Scintillator-W
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JointheR&DactivitiesinCALICE
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Simulationstudies:Optimization
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ImpactonScintillator-WECAL?
• MDIiscrucialforCEPC.AdesignofMDIreliesonthedesignofthemachine.
PreliminarystudiesonMDI
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Exercises…
Urgenttasks
• Physics@Zà EWphjysics basedon10&'(&& Z
vs.10&5 Z(FCC-ee studies)à flavorphysics
• Beamenergymeasurementà beamdepolarizationatZ,Wà at240GeV?
• Anythingelse?
2017-01-23 YuanningGao,CEPCDetector 32
PlanforCDR
• Byinternationalcollaboration!
• 1st draftbyend2017
• OptimizationbasedonILD-likedesignasareference
• Develop2+concepts?- fullsilicontracking- driftchamber+dualreadoutcoppercalorimeter
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FundingfromMinistryofScienceandTechnology
R&D‘SonPhysicsandKeyTechnologiesforHighEnergyElectron-PositronCircularCollider• 2016.07-2021.06• 36MRMB• AcceleratorPhysics&colliderdesign 3.88• Keyacceleratortechnologies 11.60• Simulation&detectordesign 5.24• Keydetectortechnologies 15.28
AnotherMOSTfund(~40M)in2018
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Summary
YuanningGao,CEPCDetector
• ProgrammadeafterthePreCDR- R&Donkeytechnologies- needmoreeffortsonMDI(afterthemachinedesign?)- Physics@Z/W,beamenergymeasurementstobestudied
soon
• PlanforCDR- develop/collect(new)ideasfor2+detectorconcepts- criticalR&D
• CEPCisaninternationalproject,youareallwelcometojoinus!
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Detectortalksatthisworkshop
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