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

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Example : MIP segmentsCCAST-Tsinghua School, 26/4/2009 Mark Thomson 25Look at clusters which are consistent with having tracks segmentsand project backwards/forward (defined using local straight-line fitsto hits tagged as MIP-like)Apply tight matching criteria on basis of projected track[NB: + track quality i.e. chi2]Here, association based on “tracking” in calorimeters
CCAST-Tsinghua School, 26/4/2009 Mark Thomson 26iv) Cluster Association Part II• Have made very clear cluster associations• Now try “cruder” association strategies• BUT first associate tracks to clusters (temporary association)• Use track/cluster energies to “veto” associations, e.g.7 GeV cluster6 GeV clusterThis cluster association would beforbidden if |E 1+ E 2– p| > 3 σ E5 GeV trackProvides some protection against obvious mistakes
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 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/

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