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FMD simulation status

FMD simulation status. Alexei Kurepin, Alla Maevskaia INR RAS, Moscow. 17 September 2002. Simulation output. Signal/background coefficient for each 0.1 h interval. Number of disk & number of sector & number of ring & energy deposited in this pad.

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FMD simulation status

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  1. FMD simulationstatus Alexei Kurepin, Alla Maevskaia INR RAS, Moscow 17 September 2002

  2. Simulationoutput Signal/background coefficient for each 0.1 h interval Number of disk & number of sector & number of ring & energy deposited in this pad 17 September 2002 Alla Maevskaia INR RAS, Moscow

  3. Occupancies of charged particles per strip for one HIJINGpara(8000 particles per unit of pseudorapidity)event vs number of ring 17 September 2002 Alla Maevskaia INR RAS, Moscow

  4. Deposited energy spectra from one strip for one HIJINGpara event 17 September 2002 Alla Maevskaia INR RAS, Moscow

  5. Primary / total coefficient comparison for magnetic field 0.2T and 0.4 T 17 September 2002 Alla Maevskaia INR RAS, Moscow

  6. Digitization: from GEANT Hits to DAQ tape For each pad read Hits If deposited energy > threshold Convert energy losses to ADC signal Add noise Simulated DAQ tape 17 September 2002 Alla Maevskaia INR RAS, Moscow

  7. Reconstruction:from DAQ tape to number of particles Read Digits Subtract pedestals Calculate number of empty pads for each 0.1 h If number of empty pad number of pads >0.1 Use Poisson method Use threshold method Multiply reconstructed number of particles by signal/background coefficient Number of charged particles in 0.1 h

  8. Comparison number of particles in one pad from HIJING and from Poisson distribution 17 September 2002 Alla Maevskaia INR RAS, Moscow

  9. Reconstruction accuracy for 40 event HIJINGpara, B=0.2T 17 September 2002 Alla Maevskaia INR RAS, Moscow

  10. Reconstruction accuracy for 40 event HIJINGpara, B=0.2T 17 September 2002 Alla Maevskaia INR RAS, Moscow

  11. Occupancy per pad for 100 HIJING events b=0-8.6fm, B=0.4T 17 September 2002 Alla Maevskaia INR RAS, Moscow

  12. Reconstruction accuracy for 100 HIJING events B=0.4T:(Nreal - Nreconstructed)/Nreal 17 September 2002 Alla Maevskaia INR RAS, Moscow

  13. Occupancy per pad for 2500 PYTHIA events 17 September 2002 Alla Maevskaia INR RAS, Moscow

  14. Reconstructed accuracy for 2500 PYTHIA events without signal/background corrections. 17 September 2002 Alla Maevskaia INR RAS, Moscow

  15. Primary / total coefficient for 2500 pp PYTHIA event 17 September 2002 Alla Maevskaia INR RAS, Moscow

  16. Primary / total coefficient for all units of pseudorapidity for 2500 pp collisoins 17 September 2002 Alla Maevskaia INR RAS, Moscow

  17. Summary Now we are close to reality after HIJING simulation with different impact parameters Poisson and threshold methods of reconstruction are consistent Reconstruction of multiplicity for PP collisions was made 17 September 2002 Alla Maevskaia INR RAS, Moscow

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