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

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CCAST-Tsinghua School, 26/4/2009 Mark Thomson 49How important is segmentation ?1x1 3x3 5x5 10x10HCALPreliminary• 3×3cm 2 looks reasonable• Hint of gain going to 1×1cm 2• Significant degradation forlarger tile sizes, e.g. 5×5cm 2
CCAST-Tsinghua School, 26/4/2009 Mark Thomson 50and ECAL Segmentation ? Investigate 10×10mm 2 , 20×20mm 2 and 30×30mm 2• Note: retuned PandoraPFA clustering parametersPreliminary Performance is a strong function of pixel size High ECAL segmentation is vital for PFACaveat:!• Remember results are algorithm dependent• Could reflect flaw in reconstructionNevertheless: highly segmented HCAL/ECAL clearly essential
Page 5 and 6: 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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