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Status of TOF simulation

Status of TOF simulation. Sergey Kiselev, ITEP Moscow, for the TOF/ITEP group Input info TOF acceptance TOF occupancy TOF space placing Next steps. 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 1. Input info.

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Status of TOF simulation

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  1. Status of TOF simulation • Sergey Kiselev, ITEP Moscow, for the TOF/ITEP group • Input info • TOF acceptance • TOF occupancy • TOF space placing • Next steps 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 1

  2. Input info • CBM_VMC package (15.04.2004), Geant3, Red Hat Linux 7.3, gcc3.2 • TOF: at 10m from the target, 10m x 10m plane with a hole 0.8m x 0.8m layers: Al - Gas - Glass - Gas - Al width: 0.2 0.12 0.54 0.12 0.2 cm • Other subsystems (see run.C): Target, PIPE, MAGNET, STS, TRD • ECAL: at 12m from the target, 11m x 11m plane with a hole 0.8m x 0.8m, Pb 14 cm • Default magnetic field (see run.C): fMagField->SetFieldXYZ(0,30,0) //valuesare in kG • 100 UrQMD Au+Au central events at E/A=25 GeV 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 2

  3. TOF acceptance primaries 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 3

  4. TOF acceptance - π± 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 4

  5. TOF acceptance - K± 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 5

  6. TOF acceptance - p 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 6

  7. TOFoccupancy • 787 tracks cross TOF: 188(24%) primaries 599(76%) secondaries • Composition of secon.: 70% e±, 16% p, 10% π±, 3% µ± • Origin of secondaries: 5% from ECAL range, 40% - TOF, 15% - TRD3, 12% - TRD2, 10% - TRD1, 2% -vertex • Max. occupancy: ~35 prim. tracks at (-150,0), ~40 secon. tracks at beam pipe per m**2 • With 10 cm**2 cell size max. occupancy ~ 7% e- e- e+ e+ p p π± π± ±  ± TOF TOF ECAL TRD3 TRD2 TRD3 TRD1 TRD2 ECAL TRD1 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 7

  8. TOF occupancy - 2 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 8

  9. Next steps • Add RICH, … • Optimize TOF structure (space placing, pad size, …) • Matching of tracks with TOF pads • Particle Identification (PID) 10.05.2004 CBM Software week May 10-15 2004 S.Kiselev ITEP 10

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