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Present conceptual view of PANDA Muon System based on RS Target Spectrometer:

JINR Status Report on PANDA Muon System G.D.Alexeev on behalf of Dubna team, ITEP, Moscow, April 18, 2008. Present conceptual view of PANDA Muon System based on RS Target Spectrometer: * MC model setup * pi/mu separation * multiple scattering

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Present conceptual view of PANDA Muon System based on RS Target Spectrometer:

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  1. JINR Status Report on PANDA Muon SystemG.D.Alexeev on behalf of Dubna team, ITEP, Moscow, April 18, 2008 • Present conceptual view of PANDA Muon System based on RS • Target Spectrometer: * MC model setup * pi/mu separation * multiple scattering • Second coordinate r/o: * signals * electronics • Forward Spectrometer: * MC model setup * multiple scattering * RS in function of HCal: - RS 'stand alone' response to hadrons - combined calorimetry ECal + RS

  2. HMI/RS µ - Filter Dipole RICH ECAL Target Spectrometer PANDA Muon and Hadron Detection in PANDA by Range System

  3. MC model setup for Target Spectrometer ECal Solenoid Range System μ 0.8 GeV

  4. Pion/muon separation in RS at 0.8 GeV

  5. Pion/muon separation in RS at 0.5 GeV

  6. Muon scattering and straggling at 0.8 GeV ECal Solenoid Range System μ 0.8 GeV Beam dia. 170 mm Muon straggling

  7. Muon scattering as a function of RS depth

  8. Anode and induced strip signals from MDT Trace 1: Anode signal, K≈60 mV/μA Trace 2: Strip signal, inverted, K≈480 mV/μA

  9. MDT signals analog R/O of the PANDA MUON TRACKER AA-QTC card 16 ch Serial data Interface Signal QTC TDC Ampl 8.3 Ampl 8.3 16ch THRout THRin Q I in I out ` TIME • Analog R/O for MDT (strips &/or pads) • Using well known Wilkinson principle for Charge-to-Time Conversion • Using TDC chip as proven solution for pipe-line R/O

  10. MC Model for Forward Spectrometer Hadron & Muon Identifier based on RS (HMI/RS) instead of HCal ECal / Shashlik HMI / RS 7 GeV 380 layers (Sci. 1.5mm + Pb 0.3 mm) 16 layers x 6cm /Fe interleaved with MDTs

  11. Muon scattering in Forward Spectrometer ECal HMI / RS μ 3 GeV

  12. Muon scattering as a function of HMI/RS depth

  13. Stand alone (no ECal) HMI / RS response to hadrons Analog signal “Digital” signals (hits) Better than analog mode!

  14. Energy Deposition in ECal + HMI/RS for 7 GeV Pions Events with different energy deposition ratio between ECal and HMI/RS

  15. Combined Calorimetry Calibration for ECal + HMI/RS Pion beam, 7 GeV Scatter plot Averaged calibration ECal signal, MeV HMI/RS signal, hits Energy, MeV

  16. Combined Calorimetry Calibration for ECal + HMI/RS Antiproton beam, 7 GeV Scatter plot Averaged calibration ECal signal, MeV HMI/RS signal, hits Energy, MeV

  17. Combined calorimetry ECal + HMI/RS:Reconstructed vs Deposited Energy Antiprotons, 7 GeV Pions, 7 GeV reco reco depo depo

  18. Conclusions: • TS - generally understood, ready for r/o optimization • FS - HMI/RS looks adequate solution Plans: • GEANT model for RS in TS -> pending final yoke design • MC optimization of HMI/RS • Prototyping - RS and second coordinate r/o -> pending money

  19. BACKUP SLIDES

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