CR7-FMD, 19 March 2007Jens Jørgen Gaardhøje, Niels Bohr Institute 1 Forward Multiplicity Detector...
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Transcript of CR7-FMD, 19 March 2007Jens Jørgen Gaardhøje, Niels Bohr Institute 1 Forward Multiplicity Detector...
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 1
Forward Multiplicity Detector
FMD 1 FMD 3FMD 2
Outer ring
Inner ring
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 2
FMD3 Cone and Beam Pipe Support
FMD3 support coneholds the beam pipevia 4 tensioned wires
Test of final coneand wire mechanism: Deformations <10 um.
Beampipe support
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 3
FMD2 support
IP
FMD2 support is a carbon fibre cylinder
Mounting flap
Honeycomb detectormounting plates
Water cooling plate for FMD2 enclosure
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 4
Digitizer cards, 40Mhz bus, RCU, DAQ, Trigger
Digitizer cards:
2 types: inner, outer
3 ALTROs + Board Controller
3 m bus cable to RCU gavemany problems. Solved by changing from 40+50 ALTRO flat busto 50+80 twisted pair cables.
Trigger (LTU) tested
DAQ operational.
40 bit signal + 10 grounds
40 bit signal + 40 groundsTwisted pairwise
adaptor
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 5
Performance in beam
680 MeV e- beam test at ASTRID ring,Aarhus University, DK
3inner+3outer FMD modules(4608 channels)
e- beam
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 6
Assembly of FMD3
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 7
Completed FMD3
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 8
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 9
Performance tests after assembly
Noise
0
0.5
1
1.5
2
2.5
3
1 4097 8193 12289 16385
Strip (x4)
AD
C c
ou
nts
Test of noise (pedestal width) for half inner ring (5 modules, 5120 strips) after final assembly
Pattern consistent withstrip and printed circuit lengths
S/N= 20- 40for all channels
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 10
… and completed FMD2
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 11
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 12
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 13
Packing FMD3
Spring suspended false bottom
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 14
From NBI to CERN
Friday, 9-3-07
Saturday, 10-3-07
Saturday, in TPC clean room
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 15
… at CERN
Cabling of FMD3 and mounting of connectors completed week 10
Verification of FMD3 cabling and partial cabling of FMD2 (service chariot) week 12
Pre-Commissioning in TPC clean room at P2 with: Final CAEN HV, CAEN LV-Easy, temporary cooling system, Final DAQ + Trigger system, partial DCS weeks 11 and Commissioning: week 12
Installation in ALICE April 23-25 (FMD3) week 17
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 16
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 17
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 18
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 19
Time table
FMD 3 cabling 5/3 - 9/3 (week 10) OK Delivery at CERN of FMD 2 & 3: 10/3 (week 10) OK Precommissioning at CERN: 13/3 - 16/3 (week 11) OK Commissioning at CERN of FMD 3 & 2 : 19/3 - 23/3 (week 12)
(can be extended into 26/3 - 30/3, week 13) Installation HV+LV in pit area (10/4 - 13/4, week 15) Final preparation for installation (16/4 - 20/4, week 16) Installation FMD 3 (23/4 - 25/4, week 17) Installation FMD 2 (10/4, week 19) Cabling FMD 2 (15/4, week 20)
Delivery at CERN of FMD1 : 25/6 - 29/6 (week 26) Commissioning at CERN: 2/7 - 6/7 (week 27) Final preparation for installation: 3/9 - 7/9 (week 36) Installation FMD1 : 12/9 - 14/9 (week 37)
CR7-FMD, 19 March 2007 Jens Jørgen Gaardhøje, Niels Bohr Institute 20
Summary
-FMD3 and FMD2 detectors at CERN since March 10, 2007 -Bad strips (<< 0.1%) -Signal (MIP)/noise = 20-40 -Commissioning with final power supplies, DAQ, DCS and Trigger ongoing at CERN. -Installation in ALICE: FMD3: 23/4 , FMD2: 10/5, FMD1: 12/9