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