The Simulation Status of SDHCAL

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The Simulation Status of SDHCAL. Ran.Han 2011.05.20 IPNL. Outline. Motivation Standalone Geant4 Simulation Realistic geometry of prototype Realistic properties of GRPC ILD Global Simulation Mokka GRPC @ Videau and Tesla Model The implantation of digitizer
The Simulation Status of SDHCALRan.Han2011.05.20IPNLOutline
  • Motivation
  • Standalone Geant4 Simulation
  • Realistic geometry of prototype
  • Realistic properties of GRPC
  • ILD Global Simulation Mokka
  • GRPC @ Videau and Tesla Model
  • The implantation of digitizer
  • Summary
  • 2Motivation Hardware:
  • Need to be able to resolve energy deposits from different particles
  • Highly granular detectors(as studied in )CALICESoftware:
  • Need to be able to identify energy deposits from each individual part
  • Sophisticated reconstruction software3
  • Particle Flow Algorithm = HARDWARE+SOFTWARE
  • Overview of SDHCal SoftwareGreen: finish Red: in progressYellow: future Purple :SummaryDIFBeamH.VDIFDIFgasStandalone GEANT4 properties description of SDHCAL in simulation :Lightweight; Flexible Easy comparison with prototype, number of layer, with/WO absorber 40 units:2 cm absorber+0.6cm sensitive medium 1 cm2 readoutpad5GEANT4 SimulationRealistic Geometry Simulation : GRPC, electronics , TB profile TestBeamDIF: 1-3ASIC: 1-48PAD:1-64 Next: How to get induced charge?Cosmic measurement6Polya-distribution:7400V Polya FittingCosmic ChargePolya FitCharge(pC)Total Q Distribution1: Simulate RPC physics process (first principle) 2: Get from data , extract parameters in Polya function from Data (F.Sulia, Gas Detectors,2009)average accumulated chargeNext : pad multiplicity– number of hit pads for one track going through Charge in each pad ----The charge density distribution71D and 2D Q Density DistributionKIRK T. MCDONALD’s lecture-0.25cm1.0cmDispatching induced charge on more than one pad for tracks on the pad border. Parameter a tuned to datad8a=0.12cm  d~0.25cmEfficiency and Pad MultiplicityComparison With TBgas gap a=0.24cmStandalone GEANT4 prototype simulation9Mokka (Global Simulation for ILC)Mokka is a full simulation using Geant4 and a realistic description of a detector for the future linear collider.VideauSHcalRPC01ONLY RPCTeslaSHcalRPC02:Keep AHCal information added SDHCalBOTH RPC AND SCINTILLATOR 10Single muon Check: Geometry CorrectGeantino Check: GRPC Inside1 -844 -1.9e+03 365 4e+04 0 2.11e+03 2.11e+03 BarrelHcalModule Transportation2 -853 -1.92e+03 369 4e+04 0 21.8 2.13e+03 physiRPCFree Transportation3 -853 -1.92e+03 369 4e+04 0 0.402 2.13e+03 physiRPCmylarCathodeTransportation4 -853 -1.92e+03 369 4e+04 0 0.196 2.13e+03 physiRPCGraphiteCathode Transportation5 -853 -1.92e+03 369 4e+04 0 0.0544 2.13e+03 physiRPCThickGlassTransportation6 -854 -1.92e+03 369 4e+04 0 1.2 2.13e+03 physiRPCGapTransportation7 -854 -1.92e+03 370 4e+04 0 1.31 2.14e+03 physiRPCThinGlassTransportation8 -855 -1.92e+03 370 4e+04 0 0.761 2.14e+03 physiRPCGraphiteAnodeTransportation9 -855 -1.92e+03 370 4e+04 0 0.0544 2.14e+03 physiRPCmylarTransportation10 -855 -1.92e+03 370 4e+04 0 0.0544 2.14e+03 physiRPCPCBTransportation11 -855 -1.92e+03 370 4e+04 0 1.31 2.14e+03 physiRPCElectronicsTransportation12 -856 -1.93e+03 370 4e+04 0 1.74 2.14e+03 BarrelHcalModule TransportationPerformance Comparison with TwoDifferent Geometry1000 K0_Long Events1000 K0_Long EventsShoot global in Barrel Shoot only Crack part in Barrel Shoot global in Barrel Same: GRPC, Digitization, Marlin Process, Pandora SettingHow to use all these models
  • Is available in ILD Software V01-11
  • The file in init.macro like/Mokka/init/detectorModel ILD_01pre00/Mokka/init/EditGeometry/rmSubDetector SHcalSc03/Mokka/init/EditGeometry/addSubDetector SHcalRpc02 110 (TESLA)#/Mokka/init/EditGeometry/addSubDetector SHcalRpc01 110 (VIDEAU)#/Mokka/init/globalModelParameter Hcal_sensitive_model scintillator/Mokka/init/globalModelParameter Hcal_sensitive_model SDRPC/Mokka/init/globalModelParameter Hcal_cells_size 10 /Mokka/init/initialMacroFile mac.mac/Mokka/init/lcioFilename pion.slcio/Mokka/init/MokkaGearFileName pion.xmlStatus of Digitizer in Marlin
  • Setup GRPC digitization start from Polya function : SimpleGRPCDigitization
  • Sum charges of Multiply particles in one cell
  • For pad multiplicity : the location of the track in one cell not know
  • 1)Using the SimCalorimeterHit to know the number of particles in one cell, and randomly draw the location in the cell2) Simulating 1mm2 cells and transform them into a 1cm2 cell in the Marlin processor (See Manqi’s talk yesterday)3) Using LCIO v2 to keep this information in Mokka output SummaryStandalone Geant4 Simulation 1- Realistic GEANT4 Simulation of Prototype 2- Efficiency, PadMulti Comparison with data-> Realistic simulation of GRPC PropertiesMokka Simulation 1- Realistic two HCAL structure in Mokka for GRPC 2- Compared the difference of cracks part between two structureThank you for your attention!16Back up Cosmic Measured Q Distribution 1: Simulate RPC physics process (first principle) 2: Get from data , extract parameters in Polya function from Data (F.Sulia, Gas Detectors,2009)ScintillatorGRPC 0.12cm32cm*8cmQDCpreampgateCharge Spectrum Cosmic Test Set Up64 Channels, trigger area < Channel areaAnalog readout18Q Density Distribution Formula a; the gas gap, q; the total charge getting from polya function we take it as point charge d ; the location of q.The potential in gap can be expressed from lecture: StrategyCosmic measured Q distributionStandaloneGEANT4 SimulationTest Beam DataGRPC DigitizationILC GlobalMOKKAILD AnalysisMarlin &&Pandora GRPC in Videau && TeslaK0_Long: Videau vs TeslaOnly shoot to Crack Part60GeV K0_LongBlue: Tesla Crack RMS90=4.69 Mean=55.2Red: Tesla CrackRMS90=9.25 Mean=48.0520GeV K0_LongBlue: Tesla Crack RMS90=3.11 Mean=16.4Red: Tesla CrackRMS90=2.49 Mean=18.4
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