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Simulation Studies of Au+Au At 200 GeV. Outline : Simulation Chain Hit level PMD Characteristic Clustering output MIP In Simulation MIP Optimization PMD Acceptance factors Centrality Selection Photon Counting Efficiency and Purity DATA. Simulation Chain.
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Simulation Studies of Au+Au At 200 GeV Outline: Simulation Chain Hit level PMD Characteristic Clustering output MIP In Simulation MIP Optimization PMD Acceptance factors Centrality Selection Photon Counting Efficiency and Purity DATA PMD collaboration meeting VECC Sunil Dogra
Simulation Chain • Generated 20k minbias 0-20fm events at 200 GeV using HIJING event generator with default settings and π0 decay on. • Pass these particles through the GEANT(STARSIM) with all detectors Y2004 geometry which gives output in zebra format. • Run bfC(Big Full Chain) with Dr. Phatak’s Clustering routine to get the .event.root, geant.root as out put. • Read the PMD and other global information. PMD Collaboration Meeting VECC Sunil dogra
Hit Level PMD Charactersitics from Simulation • Incident Photons • Main source π0 • Other sources are ω, K0, η PMD Collaboration Meeting VECC Sunil dogra
contd. PMD Collaboration Meeting VECC Sunil dogra
MIP in Simulation PMD Collaboration Meeting VECC Sunil dogra
Clustering Output from simulation PMD Collaboration Meeting VECC Sunil dogra
PMD Collaboration Meeting VECC Sunil dogra
PMD Acceptance & factors PMD Collaboration Meeting VECC Sunil dogra
Acceptance factor PMD Collaboration Meeting VECC Sunil dogra
Reference Multiplicity and N-participants distribution 1 1 Number of Participants PMD Collaboration Meeting VECC Sunil dogra
Percentage of Clusters PMD Collaboration Meeting VECC Sunil dogra
MIP Optimization PMD Collaboration Meeting VECC Sunil dogra
Efficiency for Photon counting Efficiency is defined as number ofclusters detected over certain threshold out of incident number of photons PMD Collaboration Meeting VECC Sunil dogra
Purity of Photon sample Purity of photon sample is defined as the number ofclusters detected over certain threshold out of totalnumber of clusters-like PMD Collaboration Meeting VECC Sunil dogra
Cluster edep in each η bin PMD Collaboration Meeting VECC Sunil dogra
Cluster edep in each η bin PMD Collaboration Meeting VECC Sunil dogra
Mean=.5411 RMS = .1166 Χ2/ndf = 962/19.4 Constant = 5289 Mean = .5375+-.0004 Sigma = .08414+-.0040 PMD Collaboration Meeting VECC Sunil dogra
Results from Data nhits<3300 & mean +- sigma PMD Collaboration Meeting VECC Sunil dogra
cont. PMD Collaboration Meeting VECC Sunil dogra
Thank you PMD Collaboration Meeting VECC Sunil dogra