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Tail-Catcher/Muon Tracker Prototype

This project aims to provide a snapshot of the tail-end of a shower for simulation validation. It involves prototyping a high-fidelity detector for a generic LCD, correcting for leakage and understanding the impact of coil muon reconstruction and eflow fake rate.

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Tail-Catcher/Muon Tracker Prototype

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  1. Tail-Catcher/Muon Tracker Prototype Vishnu V. Zutshi for NIU/NICADD

  2. Goals for the TC/Muon System • Provide a reasonable snapshot of the tail-end of the shower for simulation validation • Prototype detector with high-fidelity to what is imagined for a generic LCD correcting for leakage understanding the impact of coil muon reconstruction + eflow fake rate V. Zutshi, ECFA, Durham

  3. Leakage V. Zutshi, ECFA, Durham

  4. Shower Depth Shower depth dependent sampling weights (least squares minimization) are calculated with and without tail-catcher energy. Weights for layers get progressively “frozen”. V. Zutshi, ECFA, Durham

  5. Erec/Egen 50 GeV p V. Zutshi, ECFA, Durham

  6. Single particle E Resolution V. Zutshi, ECFA, Durham

  7. E correlation (with “coil”) V. Zutshi, ECFA, Durham

  8. Multiple Scattering V. Zutshi, ECFA, Durham

  9. 50 GeV p± V. Zutshi, ECFA, Durham

  10. HCal Table V. Zutshi, ECFA, Durham

  11. HCal & TCMT V. Zutshi, ECFA, Durham

  12. <90%> Containment V. Zutshi, ECFA, Durham

  13. Rotations V. Zutshi, ECFA, Durham

  14. V. Zutshi, ECFA, Durham

  15. V. Zutshi, ECFA, Durham

  16. Design Elements • “Fine” section (8 layers) 2cm thick steel • “Coarse” section (8 layers) 10cm thick steel • 5mm thick, 5cm wide strips • Tyvek/VM2000 wrapping • Alternating x-y orientation • Si-PM photo detection • Common readout with HCal V. Zutshi, ECFA, Durham

  17. Fermi-NICADD Extruder V. Zutshi, ECFA, Durham

  18. Die V. Zutshi, ECFA, Durham

  19. Bulk LY • BC404 3.25  0.22 • BC408 2.70  0.15 • F-NICADD 2.01  0.30 (~66% of BC408) • averaged over 10 samples V. Zutshi, ECFA, Durham

  20. Separation Grooves Provides better rigidity 1 2 3 4 5 Epoxy/paint mixture V. Zutshi, ECFA, Durham

  21. Strips V. Zutshi, ECFA, Durham

  22. X-talk V. Zutshi, ECFA, Durham

  23. Grooving V. Zutshi, ECFA, Durham

  24. Response V. Zutshi, ECFA, Durham

  25. Uniformity (Grooves) V. Zutshi, ECFA, Durham

  26. Uniformity (small holes) V. Zutshi, ECFA, Durham

  27. Longitudinal Scan V. Zutshi, ECFA, Durham

  28. 1mm thick steel walls Cassette I LED’s sit here Electronics sit here V. Zutshi, ECFA, Durham

  29. Cassette II V. Zutshi, ECFA, Durham

  30. Cassette III V. Zutshi, ECFA, Durham

  31. LED Stability studies underway V. Zutshi, ECFA, Durham

  32. Absorber and Cart • Good quality steel plates from Fermi scrap available (0.75 and 4 inches thick). • Maximum size for the thicker plates is 1.066m x 1.2m. • Cart being designed with about 10 tonne load capacity. • Will have the capability for forward-backward and left-right motion. V. Zutshi, ECFA, Durham

  33. Quality Control I • Hole Tolerance • Width and thickness measurements • Dopant presence • Attenuation length measurements • Longitudinal and horizontal scans V. Zutshi, ECFA, Durham

  34. Quality Control II V. Zutshi, ECFA, Durham

  35. Quality Control III V. Zutshi, ECFA, Durham

  36. Summary • Strip-fiber R&D essentially done, we are entering construction phase. • All the scintillator required for the device has been produced. • Mechanical prototype cassette assembled. • Hope to have the first fully instrumented layer readout before year-end. V. Zutshi, ECFA, Durham

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