technical forum, 8 march 2007børge svane nielsen, nbi1 status of the fmd børge svane nielsen niels...
TRANSCRIPT
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 1
Status of the FMD Status of the FMD
Børge Svane Nielsen
Niels Bohr Institute
FMD 1 FMD 3FMD 2
Outer ring
Inner ring
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 2
Test beam resultsTest beam results
680 MeV e- beam test at ASTRID ring,Aarhus University, DK
5 FMD modules(5120 channels)
e- beam
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 3
FMD3 coneFMD3 cone
FMD3 support cone alsosupports the beam pipeby 4 tensioned wires
Test with final coneand wire mechanism shows <10 umdeformations.
Mock-up beampipe supportring.
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 4
Digitizer cards and RCU bus cables
Digitizer cards and RCU bus cables
Digitizer cards on detectorbased on TPC FEC design,(designed at NBI)
3 ALTROs + Board Contr.
2 versions (inner, outer)
3 m bus cable to RCU gavemany problems, until wechanged from 40+50‘standard’ ALTRO busto 50+80 twisted pair cables.
40 bit signal + 10 grounds
40 bit signal + 40 grounds
adaptor
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 5
Test after assemblyTest 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 understoodfrom strip andprinted circuit lengths
All S/N above 20
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 6
FMD2 supportFMD2 support
IP
FMD support is a relatively simple carbon fibre sandwich structure cylinder.
Mounting flap
Honeycomb detectormounting plates
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 7
Assembly of FMD3Assembly of FMD3
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 8
Completed FMD3Completed FMD3Both halves of FMD3 Both halves of FMD3 were completed last weekwere completed last week
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 9
… and then FMD2… and then FMD2
Both halves of Both halves of FMD2 to be/were FMD2 to be/were completedcompletedthis morning this morning
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 10
ConclusionsConclusions FMD3 and FMD2 detectors ready to ship tomorrow Very small rate of single strip failures (<<0.1%) Signal/noise well above TDR value Commissioning with final power supplies, DAQ, DCS and Trigger starting next Monday at Point 2. Installation mid-April (FMD3) and early May (FMD2)
½ FMD3
½ FMD2(without detectors)
Technical Forum, 8 March 2007 Børge Svane Nielsen, NBI 11
… at CERN… at CERN
Ongoing: cabling of FMD3
Arrival of detector at P2: Saturday
Starting next week: commissioning in TPC clean room at P2 - CAEN HV available - CAEN LV should arrive next week - temporary cooling system
Installation April 23rd (FMD3) - need to work out access - area should be cleaned