Particle Flow Calorimetry and ILC Detector Design - Center for High ...

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ILD calorimetry concept*Very high longitudinal and transverse segmentationECAL:• SiW sampling calorimeter• Tungsten: X 0 /λ had = 1/25, R Mol. ~ 9mm Narrow EM showers longitudinal sep. of EM/had. showers• longitudinal segmentation: 30 layers• transverse segmentation: 5x5 mm 2 pixelsHCAL:HCAL• Steel-Scintillator sampling calorimeter• longitudinal segmentation: 48 layers (6 interaction lengths)• transverse segmentation: 3x3 cm 2 scintillator tilesECALComments: Technologically feasible (although not cheap) Ongoing test beam studies (CALICE collaboration)*Other ILD calorimetry options being actively studied, e.g. RPC DHCAL, Scintillator strip ECALCCAST-Tsinghua School, 26/4/2009 Mark Thomson 11
CCAST-Tsinghua School, 26/4/2009 Mark Thomson 12Calorimeter Reconstruction High granularity calorimeters –very different to previous detectors(except LEP lumi. calorimeters) “Tracking calorimeter” – requiresa new approach to ECAL/HCALreconstructionParticle Flow ReconstructionPFA calorimetric performance = HARDWARE + SOFTWAREPerformance will depend on the software algorithmdifficult to evaluate full potentialσ E /E = f (software)
Page 5 and 6: CCAST-Tsinghua School, 26/4/2009 Ma
Page 11: CCAST-Tsinghua School, 26/4/2009 Ma
Page 15: ILD Software Framework (C++) Everyt
Page 18 and 19: PandoraPFANeed “realistic” Part
Page 26 and 27: Example : MIP segmentsCCAST-Tsinghu
Page 32 and 33: vi) Photon ID/Recovery Use simple c
Page 36 and 37: Putting it all together…CCAST-Tsi
Page 42 and 43: Understanding PFA PerformanceCCAST-
Page 46 and 47: HCAL Depth ResultsCCAST-Tsinghua Sc
Page 48 and 49: Cost drivers:e.g. Radius vs. B-fiel
Page 52 and 53: Particle Flow can deliver ILC jet e
Page 54 and 55: General ConsiderationsCCAST-Tsinghu
Page 60: Thank youCCAST-Tsinghua School, 26/

Particle Flow Calorimetry and ILC Detector Design - Center for High ...

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