1. Quick link: cern.ch/cmstb04
Test beam 2004
Crystal tests
Preparation update
D Cockerill ,
Test beam 2004 Web page
Quick link: cern.ch/cmstb04 (
D Cockerill (RAL)
ECAL TB Meeting,

2. Test beam SPS MD 08.00-16.00 Tue 25 may
Beam Tue 25 May – Wed 9 June (~ 13 days)
Scrubbing Wed 9 June – Mon 14 June
25nsec beam Mon 14 June – Mon 21 June (7 days)
Shutdown Mon 21 June – Sat 26 June
Beam Sat 26 June – Wed 7 July (~10 days)
Other users Wed 7 July – Mon 19 July
H4 ‘free’ Mon 19 July – Wed 28 July
D Cockerill (RAL)
ECAL TB Meeting,

3. 10 BCTP 15 SIC Bare SC assembled
New SC – SC03
10 BCTP
15 SIC
Bare SC assembled
- HV cards/2 thermisters being mounted - Soak test end of this week - to bldg 11, end this week/early next week
D Cockerill (RAL)
ECAL TB Meeting,

4. SC03 - crystal arrangement from FRONT
Reference crystal
2515
0.14
2490
0.63
2479
0.82
2473
0.13
2469
1.13
2522
0.62
2526
2483
0.58
2496
0.55
2532
0.53
2578
1.16
2595
0.9
2617
1.04
2583
0.99
2587
1.25
2601
0.74
2593
0.84
2592
2590
2580
0.69
2586
1.4
2575
0.8
2573
1.2
2579
0.49
2615
1.6
BCTP
Xtal  (m-1)
SIC
Beam
D Cockerill (RAL)
ECAL TB Meeting,

5. Induced absorption data for the 10 SIC crystals
New SC – SC03
Induced absorption data for the 10 SIC crystals
D Cockerill (RAL)
ECAL TB Meeting,

6. SC04 – with Apatity crystals
Start to prepare SC04 for Apatity crystals ?
Cantonal irradiation of another set of 10 BCTP, 10 SIC ?
10 BCTP
10 SIC from 2nd 2004 production ?
5 Apatity
D Cockerill (RAL)
ECAL TB Meeting,

7. E0’ in bldg 11
E0’, with a prototype SC, moved to bldg 11 on 30 March to be connected to full
ECAL R/O chain
SC readout
SC umbilical connected to Motherboard
25 channels MGPA VFE + FE card (SM1, 2003) = one barrel tower
The VFE electronics is mounted on E0' with standard cooling bars.
Blue LED pulses to front of crystals, one at a time
Signals seen in correct order by full readout chain
Possibility to inject light into each crystal separately from front
D Cockerill (RAL)
ECAL TB Meeting,

8. E0’ in bldg 11
Readout
Token-ring link board is also installed on the cooling bars
2 fibers-bundles : 1 for the token-ring, 1 for the data, no trigger read-out
MEM
Installed 3 FEM's for the monitoring :
2 qualified (4 PN diodes) for the S/R analysis;
1 reused (2 PN diodes) for laser acknowledge.
Change ferules on 6 fibers to fit in the FEM's boxes
Wait for MEM mechanics (end of April) and probably install MEM box on E0’ second cooling plate
Performance
The read-out with rose10 and token-ring command with optical FEC is tested and operational
The noise level at the moment is about 1.3 ADC count in the lab.
This is about the same as last year. But since the number of electrons/MEV is
smaller for the Endcap, the Energy equivalent noise will be higher.
D Cockerill (RAL)
ECAL TB Meeting,

9. H4 Infrastructure Support table
Designed, under construction, TA1 group
Cooling system
– will use main system at H4
– low flow rate line for E0’ cooling
– direct hard wired interlock from cooling PLC to LV
– cooling status from PLC to CR via ethernet
Cooling in single loop:
- backplate
- SC cover
- MEM cooling plate
- electronics
E0’ insulation
Under preparation by TA1 group
D Cockerill (RAL)
ECAL TB Meeting,

10. H4 Infrastructure (cont’d)
Laser system
– ready from Mon April 19
VPT HV
– 10 SHV cables to be laid from CR to area
– NIM crate for VPT HV will be placed in H4 CR
Precision Temperature Measurement
– need to decide between M0’ PT100 system of Milano
or thermister system of ETH-Z
D Cockerill (RAL)
ECAL TB Meeting,

11. H4 Infrastructure
Maurice: Hardware: no change with respect to 2003, except:
1. the camac crate containing the fiber patern units was suspected to introduce DAQ problems. Another crate found.
2. a person from the Saclay team got in touch with the 380V power supply. this came from the fact that even by pushing on the local emergency stop, the 380V was still ON on the table. this is now cured (the emergency stop will stop the power on the motors, but not on the control system sitting ouside of the barack; this was requested by sacalay.
3. the moving table has to be equipped for a new support for the EE module. the table is ready for receiving it. the turning tool was removed.
4. the last measurement on the triggering and beam definition support showed a misalignement of the order of 1 mm. it was aligned at the beginning of the 2003 tests. It was now aligned again.
D Cockerill (RAL)
ECAL TB Meeting,

12. H4 Infrastructure Maurice (contd)
5. the additional 10 HV cables with SHC connectors on both ends for the EE will be mounted early may.
6. the chilled water system got a new cooling tower and new pumps. it should be more efficient for a full EB supermodule.
good luck maurice
D Cockerill (RAL)
ECAL TB Meeting,

13. Beam preparation
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14. Test beam planning, May 27 – July 7
D Cockerill (RAL)
ECAL TB Meeting,

15. Test beam running R-measurement Irradiate a single crystal at a time.
Irradiate until crystal has lost ~5% of LY.
S2 20x20mm2 counter
6.7*10-6 rads/S2 count, at shower max (assuming Gaussian beam profile, sigma 2cm).
Use rate collimators (COLL 1 and COLL 6). 
Increase rate equally in X and Y
Try to avoid changing momentum byte collimator (COLL 3) 
Start with a Laser/ped/temp run
E=120 GeV
3 runs with S2 at 2.5k counts/burst to get reference. 20k DAQ events each run
Increase rate to 20k S2 counts/burst = 30 Rad/h
(could go to 30k S2 counts/burst = 45 Rad/h if possible)
Limit DAQ to take 1k events/burst (avoid large data volumes)
8 hours per crystal ?
during this 8h period, take laser runs every 20 mins with beam on
D Cockerill (RAL)
ECAL TB Meeting,

16. Test beam running Beam 08.00 Tue 25 May – 08.00 Wed 9 June (~13 days)
SPS burst (or spill) length = 4.8 s, cycle length 16.8 s
Number of bursts/hour ~ 214
number of bursts/minute ~ 3.6
Laser runs: need to be taken at min intervals
Tue 25 May – DAQ setup with beam
Hodoscope checks
Position of array wrt beam
Laser runs, ped runs
Tue/Wed – Calibration at 120 GeV, 25 crystals
Trigger S2 20 x 20 mm2
2.5k S2 ev/burst = 1000 DAQ events
20k ev/xtal, ~10 min/xtal, Coll ± 3mm
One SC calibration in 4h
2 SC calibrations in 8h
D Cockerill (RAL)
ECAL TB Meeting,

17. Test beam running Wed 26 May 08.00 – 16.00? Irradiate 1st crystal
S2 20k/burst
Follow laser & beam signal
Low rate calibration of crystal after every 0.5 % drop (beam)?
~10 reference low rate calibrations from
0.5 – 5% drop (~15min*10 = 2.5hrs)
Low rate calibration of surrounding xtals
when any move by 0.25% (laser) from previous calibration?
Low rate calibration for 2-3h to follow any
annealing anomalies after irradiation
Calibrate control xtal
Move to next crystal etc
D Cockerill (RAL)
ECAL TB Meeting,

18. H4 Expert list H4 beam line  M Haguenauer
Laser operation  D Bailleux, A Bornheim
Laser monitoring ? M Dejardin, P Jarry, P Verrechia
DAQ  J Bourrotte, H Suter
Electronics R/O  M Dejardin, R Benetta
VPT high voltage  D Cockerill, C Shepherd, K Bell
LV  S Singovski
Cooling/DSS  L Linssen/TA1
DCS/PVSS  S. Zelepoukine, Jovan Puzovic
Test beam turntable ? J-L Faure, E Pasquetto
Shift list  A Holzner, G Dissertori, D Cockerill
D Cockerill (RAL)
ECAL TB Meeting,

19. Detailed assembly items follow:
D Cockerill (RAL)
ECAL TB Meeting,

20. Crystal + VPT arrangement from FRONT
Reference crystal
2515
4521
2490
4528
2479
4671
2473
4537
2469
4523
2522
4874
2526
4525
2483
4529
2496
4872
2532
4882
2578
4634
2595
4600
2617
4800
2583
4570
2587
4832
2601
4822
2593
4831
2592
4809
2590
4557
2580
4821
2586
4877
2575
4830
2573
4503
2579
4879
2615
4847
BCTP
Xtal VPT
SIC
Beam
D Cockerill (RAL)
ECAL TB Meeting,

21. Test beam periods P1A, P1B, P1C, P2A
25 nsec
D Cockerill (RAL)
ECAL TB Meeting,

22. E0’ – corresponding SCs in CMS
Spacer numbering
Column, Row
5,5
6,5
5,4
6,4
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ECAL TB Meeting,

23. IP Angles at CMS 737.67mm 587.31mm 3179 mm IP to front of EE
q = o IP
D Cockerill (RAL)
ECAL TB Meeting,

24. Y Z Angles for E0’, Y-Z plane  = 10.47o Beam 587.31mm
3179 mm IP to front of EE Z
D Cockerill (RAL)
ECAL TB Meeting,

25. X Z Angles for E0’, X-Z plane  = 13.06o Beam 737.67mm
3179 mm IP to front of EE Z
D Cockerill (RAL)
ECAL TB Meeting,

26. Position of middle of array, 390mm forwards from backplate,
E0prime backplate & SCs
250mm
352mm
Position of middle of array, 390mm forwards from backplate,
with respect to backplate edges
D Cockerill (RAL)
ECAL TB Meeting,

27. Preparation Responsibles: EA - Etienette Auffray, CERN
KWB - Ken Bell, RAL
DJAC - Dave Cockerill, RAL
DB – David Bailleux, Minn
MD - Marc Dejardin, Saclay
MH – Maurice Haguenauer, LLR
RB – Robert Benetta, CERN
PSF - Paul Flower - RAL
HFH - Helen Heath - Bristol
PL - Pierre Lecomte - ETHZ
ABL - Tony Lodge, RAL
JR - John Rander, Saclay
BJS - Brian Smith, RAL
TA1 - CERN-PH TA1 group
VP – Vladimir Postoev, INR
VG – Viatcheslav Grishin (Slava), IHEP
IA – Alexander Inyakin, IHEP
D Cockerill (RAL)
ECAL TB Meeting,

28. Supercrystal assembly
Hardware (needs+spares):
SC crystals
 25 EE crystals - EA
SC mechanics + VPTs
 1+1 Alveoles - 3 already at CERN - BJS/TA1
 25+5 Tyveced Front Inserts - 75 already at CERN - BJS/TA1
 1+1 sets of Rear Inserts - 3 sets already at CERN - BJS/TA1
 1+1 Interface Plates - 3 already at CERN - BJS/TA1
 1+1 Housings - 3 already at CERN - BJS/TA1
 25+5 VPTs - ~48 already at CERN - DJAC
 1+1 calibrated thermistors & cables (what connectors?) - PSF
D Cockerill (RAL)
ECAL TB Meeting,

29. Supercrystal assembly + umbilical
SC mechanics + VPTs (contd)
Glue for Inserts - already at CERN - BJS/DJAC
Glue dispensors for Inserts - already at CERN - BJS/DJAC
 RTV Glue for VPTs - on order in the UK - BJS
 Glue dispensors for VPTs - ??? - BJS/DJAC
 3 Glueing Jigs for VPTs to crystals - already at CERN - DJAC
 15 Centering tubes/weights for glueing - already at CERN - BJS/DJAC
 Bar-code reader for crystal serial numbers (or temporary labels???) - DJAC
 Jig for manipulating alveolar during construction – ETH-Z/PL
 Supercrystal lifting "handle" - already at CERN - DJAC
SC umbilical
5+2 HV boards - presently at RAL - ABL
1+1 umbilical signal looms - ABL
1+1 umbilical HV (SHV) cable pairs - ABL
Test gear for supercrystal soak test at CERN - ABL/HFH/DJAC/KWB/VP/VG/AI
D Cockerill (RAL)
ECAL TB Meeting,

30. E0’ Monitoring  50 Porte-Ferrules - already at CERN - BJS/DJAC
 Tooling for Porte-Ferrules - already at CERN - BJS/DJAC
 1 Level-1 EE fibre optic harnesses - 1 presently on E0’ at CERN - BJS/JR
Laser(s)/photo-diodes/MEMs/mating-pieces-to-photo-diodes etc etc - JR???
E0’ mechanics
 1+1 positional spacers - already at CERN - DJAC
 E0prime support backplate & related ironmongery & cooling plates - already at CERN - DJAC
 Mounting bolts & shoulder bolts - already at CERN - DJAC
E0prime thermal enclosure, already at CERN, extra insulation – TA1
Support to mount E0prime system onto test beam turntable - TA1 design/ fabricate
Readout
 HV system for beam tests - KWB
EE Mothercard/connectors/pigtail - ABL
Full readout chain, LV system, MEM, etc - MD
 1 set of EE cooling bars & related mechanics etc - already at CERN - JAH
D Cockerill (RAL)
ECAL TB Meeting,