1. Calorimetry@NICADD.next2yrs
Vishnu V. Zutshi
For the NICADD team

2. Introduction The goal Where we are The road ahead
Sincere thanks to NICADD personnel for providing advice and input for this
My personal opinions to start the discussions
NICADD Retreat
11/20/2018

3. The Goal
Take a leadership role in calorimeter R&D for the Linear Collider Detector
Focus on scintillator-based (semi)digital hadron calorimeter
Develop simulations and algorithms to fully exploit the power of the proposed calorimeters (Dhiman’s talk)
NICADD Retreat
11/20/2018

4. Linear Collider Detector
ECAL and HCAL
inside coil
NICADD Retreat
11/20/2018

5. Single Particle Resolutions
NICADD Retreat
11/20/2018

6. Where We Are Light yield Tile-fiber system optimization Layer stack
Photo-detectors
NICADD Retreat
11/20/2018

7. MIP Light Yield 9.4 cm2 cells with sigma grooves, 0.94
mm fiber, readout w/
16-channel PMT.
Avg. MIP LY = 11 p.e.
Very sensitive function
of tile-fiber specifics.
NICADD Retreat
11/20/2018

8. Tile-Fiber Studies
NICADD Retreat
11/20/2018

9. In Progress
NICADD Retreat
11/20/2018

10. Light Yield Dispersion
Within 15% desired
Light Yield Dispersion
NICADD Retreat
11/20/2018

11. Layer Stack
NICADD Retreat
11/20/2018

12. Reading out the Layer Stack
4 layers being read out
NICADD Retreat
11/20/2018

13. Layer Stack Next Steps
Understand the response of the 4 layers currently being readout
Readout all 84 channels with pmt’s
Gradually replace some layers with solid-state photo-detectors like Si-PM’s, APD or MRS
May need to replace the cells
NICADD Retreat
11/20/2018

14. Avalanche Photo Diodes
32 channel Hamamatsu
matrix. 80% QE, gains
in the low 100’s.
NICADD Retreat
11/20/2018

15. APD Gain Studies
NICADD Retreat
11/20/2018

16. APD Next Steps Wrap up gain measurements (both APD’s)
Fabricate APD box
Cross calibrate with PMT
Alternate test-stand
Try to obtain mip signal for a single channel
Multi-channel readout
Study temperature dependence
NICADD Retreat
11/20/2018

17. Silicon PhotoMultiplier (SiPM)
Si-PM’s
~1K pixels on 1mm2
Pixels of the SiPM
SiPM
Silicon PhotoMultiplier (SiPM)
MEPhI&PULSAR
NICADD Retreat
11/20/2018

18. Preliminary Results with Si-PM’s
MRS devices
expected end of
the month
NICADD Retreat
11/20/2018

19. Manpower Tile-Fiber System: Sasha, Peter (leaving soon)
+ LC Muon + MUCOOL + D0
Tile-Fiber System: Sasha, Peter (leaving soon)
Layer Stack: Kurt*, Donna*
APD: Dimitri*
Si-PM: Victor
Electronics: Manuel, Victor
Electrical and Mechanical Shops
+ Extruder
Intends to teach
* Doing coursework
NICADD Retreat
11/20/2018

20. Funding Requests 10K “planning” grant awarded NICADD Retreat
11/20/2018

21. The Road Ahead Test Beam Collaboration Tail-Catcher Electronics
Additional funding
Papers
NICADD Retreat
11/20/2018

22. Test Beam Fully test the detection and readout chains
Gain experience with
Detailed verification of GEANT4
Testing Eflow algorithms
Low to moderate E pions (1-20 GeV)
Place: Fermi? Protvino? ?
1m x 1m x 1m prototype needed
NICADD Retreat
11/20/2018

23. Collaboration with DESY?
The “other” scintillator option
1m3 prototype late 04 to early 05
Should we seek partnership with them?
In my opinion we do not have much choice if we want to go beyond the layer stack
the lack of a technology alternative
cost of fully instrumented 1m3 prototype
NICADD Retreat
11/20/2018

24. Projected Funding Profile
NICADD Retreat
11/20/2018

25. Testbeam Layout
NICADD Retreat
11/20/2018

26. Test Beam Simulation s/E measured w.r.t. full 9cm2 grid E (GeV) 5.0
10.0
15.0
20.0
s/E
30-20
0.97
1.06
1.08
1.10
20-30
1.0
1.07
1.14
1.17
NICADD Retreat
11/20/2018

27. Tail-Catcher Also functions as a muon system
Overlaps muon R&D
Tail-Catcher
Also functions as a muon system
5% of the tracks deposit energy outside the calorimeters
Prob./event > 20GeV (in tail-catcher)~4%
For the test-beam however, it is an exclusive piece of apparatus
Do we want to build this and how?
NICADD Retreat
11/20/2018

28. Tail-Catcher for the Testbeam
2-3 l thick, 1.5 x 1.5 m2
Iron/Steel as absorber
Extruded strips (X-Y ?)
4-5 layers
PMT or Si-PM readout
Do we want to make it such that it also serves as a muon-prototype?
~10 cm thick Fe
WLS
5mm thick scint.?
NICADD Retreat
11/20/2018

29. Electronics Development of semi-digital readout electronics
Must smoothly interface into the CALICE test beam DAQ
NICADD Retreat
11/20/2018

30. A Possible Course of Action
Take part in CALICE testbeam
Instrument layers of 3x3 grid ( cells: $12-15K)
Take responsibility for the tail-catcher (major infrastructure cost is iron ~ 0-10K + 2-5K for photodetectors + labor + transportation  ask DESY or Fermilab)
Design and fabricate semi-digital electronics
NICADD Retreat
11/20/2018

31. DOE Funding?
Possibility exists of getting DOE support for LC related calorimeter R&D
Cannot ask money for the same things eventhough the money being earmarked for them is not enough
Possible projects:
Instrumentation and/or electronics for n layers
tail-catcher
NICADD Retreat
11/20/2018

32. Papers IEEE Transactions (November):
mostly on tile-fiber system optimization + some motivation from simulation
NIM (early 2004):
hardware and simulation paper establishing the feasibility of a scintillator-based (semi)digital hcal
Test-beam related articles (late 2004):
NICADD Retreat
11/20/2018