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Status of Geant4 Veto Simulation

Status of Geant4 Veto Simulation. A. Battaglia, E.Leonardi, M.Serra, P.Valente INFN Roma NA48/3 Veto group meeting – June 7 th , 2005. Goals. Geant4 simulation of g large angle veto Tile Cal : Lead/Scintillating tiles with WLS readout 13 vetoes layout. Geometry. 70 planes.

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Status of Geant4 Veto Simulation

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  1. Status of Geant4 VetoSimulation A. Battaglia, E.Leonardi, M.Serra, P.Valente INFN Roma NA48/3 Veto group meeting – June7th, 2005

  2. Goals • Geant4 simulation of g large angle veto • TileCal: Lead/Scintillating tiles with WLS readout • 13 vetoes layout A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  3. Geometry 70 planes • TileCal • 13 veto rings, 16 trapezoids • Tile planes to beam axis • Tile planes staggered in  • Aluminum support enclosure beam axis A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  4. TileCal Aluminum Lead Scintillator 1 cm 1 mm Beam Axis 30 cm 27.75cm 43 cm (69 Pb planes) new: added mylar wrapping to scintillator tiles Flat bottom face… A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  5. Geometrical Parameters • Aluminum support • Covers front, back, and bottom surfaces of brick • Thickness=0.1, 1, 0.1 cm • Tiles • 5 mm Scintillator, 1 mm Lead • 69 Pb tiles/brick , 70 Scint tiles/brick •  13.3 X0 A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  6. Positions, q and E 0 1 E = 100 MeV q= 36.3 , 50.1 , 80,0 mrad 106 events / point 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 q z0 z A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  7. q = 36.3 mrad A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  8. P=0 P=13 A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  9. Effect of second veto 4 5 q = 36.3 mrad N.B. with 50 and 80 mrad g trajectory does not meet 2nd veto A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  10. q = 50.1 mrad A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  11. P=0 P=13 A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  12. q = 80.0 mrad A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  13. P=0 P=13 A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  14. P=0 P=6 A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  15. P=13 P=6 A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  16. (Old) ToDo list 1 • More statistics from 104 to 105 events  OK: 106 events • More test configurations • More points on brick (bottom surface) OK • Energy/Angular distribution?improved ... still rough • Improve geometry/set-up • Add separationlayer (adjacent bricks) ... mylar only • More complex setup • Add more bricks along the beam axis full LAV layout A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

  17. (New) ToDo list 2 • More detailed scan E, q, points(?) • More construction layouts • more X0 (>16) • Al (yes/no, thickness) • test different Sci/Pb ratio • Use photonuclear interaction physics list • LHEP  QGSC (+Kosov input?) • Use FLYO output as g-beam gun (z along tube, q, E) • Compare with existing data? A. Battaglia, E.Leonardi, M.Serra, P.Valente - NA48/3 Veto Group Meeting

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