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
9/17/2018
V. Zutshi, ECFA, Durham

3. Leakage
9/17/2018
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”.
9/17/2018
V. Zutshi, ECFA, Durham

5. Erec/Egen 50 GeV p
9/17/2018
V. Zutshi, ECFA, Durham

6. Single particle E Resolution
9/17/2018
V. Zutshi, ECFA, Durham

7. E correlation (with “coil”)
9/17/2018
V. Zutshi, ECFA, Durham

8. Multiple Scattering
9/17/2018
V. Zutshi, ECFA, Durham

9. 50 GeV p±
9/17/2018
V. Zutshi, ECFA, Durham

10. HCal Table
9/17/2018
V. Zutshi, ECFA, Durham

11. HCal & TCMT
9/17/2018
V. Zutshi, ECFA, Durham

12. <90%> Containment
9/17/2018
V. Zutshi, ECFA, Durham

13. Rotations
9/17/2018
V. Zutshi, ECFA, Durham

14. 9/17/2018
V. Zutshi, ECFA, Durham

15. 9/17/2018
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
9/17/2018
V. Zutshi, ECFA, Durham

17. Fermi-NICADD Extruder
9/17/2018
V. Zutshi, ECFA, Durham

18. Die
9/17/2018
V. Zutshi, ECFA, Durham

19. Bulk LY
BC  0.22
BC  0.15
F-NICADD 2.01  (~66% of BC408)
averaged over 10 samples
9/17/2018
V. Zutshi, ECFA, Durham

20. Separation Grooves Provides better rigidity Epoxy/paint mixture 1 2 34 5
Epoxy/paint mixture
9/17/2018
V. Zutshi, ECFA, Durham

21. Strips
9/17/2018
V. Zutshi, ECFA, Durham

22. X-talk
9/17/2018
V. Zutshi, ECFA, Durham

23. Grooving
9/17/2018
V. Zutshi, ECFA, Durham

24. Response SMALL HOLE WLS FIBER INSIDE TRIGGER1, PE TRIGGER2, PE
BIG HOLE GLUED
14.36
GROOVE 0.063
12.34
GROOVE 0.078
13.9
11.8
GROOVE 0.117
14.39
12.7
GROOVE 0.156
13.27
SMALL HOLE
15.2
13.1
9/17/2018
V. Zutshi, ECFA, Durham

25. Uniformity (Grooves)
9/17/2018
V. Zutshi, ECFA, Durham

26. Uniformity (small holes)
9/17/2018
V. Zutshi, ECFA, Durham

27. Longitudinal Scan
9/17/2018
V. Zutshi, ECFA, Durham

28. Cassette I 1mm thick steel walls Electronics sit here LED’s sit here
9/17/2018
V. Zutshi, ECFA, Durham

29. Cassette II
9/17/2018
V. Zutshi, ECFA, Durham

30. Cassette III
9/17/2018
V. Zutshi, ECFA, Durham

31. LED
Stability
studies underway
9/17/2018
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.
9/17/2018
V. Zutshi, ECFA, Durham

33. Quality Control I Hole Tolerance Width and thickness measurements
Dopant presence
Attenuation length measurements
Longitudinal and horizontal scans
9/17/2018
V. Zutshi, ECFA, Durham

34. Quality Control II
9/17/2018
V. Zutshi, ECFA, Durham

35. Quality Control III
9/17/2018
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.
9/17/2018
V. Zutshi, ECFA, Durham