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4 th Concept Software First Results

4 th Concept Software First Results. ILCroot flow control. Initialization. Particle transport. Hits. Event generation. Event merging. Digits. Summable Digits. Clusters. Tracking. PID. ESD. Analysis. ILCroot persistent objects. Status of ILCroot: Generators (A. Mazzacane).

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4 th Concept Software First Results

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  1. 4thConceptSoftware First Results

  2. ILCroot flow control Initialization Particle transport Hits Event generation Event merging Digits Summable Digits Clusters Tracking PID ESD Analysis

  3. ILCroot persistent objects

  4. Status of ILCroot: Generators(A. Mazzacane) Two more classes added to read files from external generator (like Pandora-Pythia) Stdhep format Text format Pandora-Pythia currently used to generate events for testing the detectors

  5. Status of ILCroot: VXD(A.Mazzacane D. Barbareschi) Add new class to read gdml geometry format different version of SiD VXD: cilindrical in ladder (only barrel, endcaps ready soon) sid00 -> sidmay06

  6. Status of ILCroot: VXD

  7. Status of ILCroot: VXD

  8. Status of ILCroot: VXD 3 technologies already present in ILCroot code: • Silicon Pixel Detectors (SPD) • Silicon Drift Detectors (SDD) • Silicon Strip Detectors (SSD)

  9. Status of ILCroot: TPC

  10. Status of ILCroot: Tracking(F. Ignatov) Primary seeding: looks for track with hits 20 layers apart + beam constraint Secondary seeding: looks for tracks with hits in layer 1, 4 and 7 (no beam constraint) Full Kalman filter then initiated 1st step: start from TPC fit + prolongation to VXD (add clusters there) 2st step: start from VXD, refit trough TPC + prolongation to MUD 3st step: start from MUD and refit inword with TPC + VXD Final step: isolated tracks in VXD and in MUD (not used at present) Kinks and V0 fitted during the Kalman filtering All passive materials taken into account for MS and dE/dx corrections

  11. Status of ILCroot: DREAM Number of cells in barrel: 13924 disposed in 236 slices containing 59 cells Number of cells in each endcap: 3164 disposed in 27 rings

  12. Status of ILCroot: DREAM Bottom view of single cell Bottom cell size: ~2 cm Top cell size: ~ 4 cm Prospective view of clipped cell Cell length: 150 cm, 100cm Number of fibers inside each cell: 1980 equally subdivided between Scintillating and Cerenkov Fiber stepping ~2 mm

  13. Results from DREAM simulation (V. Di Benedetto) Scintillation and Cerenkov processes well simulated Easily switch from Cu to W (however, need to change calibration values of S and C) Pattern recognition in place (nearby cells). Hadronic showers appear to reproduce the compensation effect seen in the test module (Fluka) PiD (e//) results are very promising

  14. Fluka vs G3/G4 Geant3 Fluka Geant4 -at 50 GeV in Pb Sphere of 500 cm Radius

  15. MC for DREAM In the Bangalore version some 30% energy was not deposited (hadrons only, electrons were OK) After fine tuning with CERN, 50 GeV - deposits: 46.5 GeV in Pb with G3 47.8 GeV in Pb with G4 (QGSP_BERT_HP ) 45.0 GeV in Pb with G4 (QGSP_BERT ) 48.1 GeV in Pb with Fluka Punch-through in 1m Cu is clearly visible in the event display (should be recovered in the Muon Spectrometer) However, the energy deposited in the Cu is about twice than in W.

  16. Electrons in Endcaps

  17. Resolution Plots for  (Barrel only) (E)/E=45%/sqrt(E)

  18. Detector layout

  19. ILCroot Event Display

  20. ILCroot Event Display 2

  21. Conclusions Work is proceeding quickly First analyses will be shown at Valencia ILCroot and instructions on the web asap!

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