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Technical Forum, 8 March 2007Børge Svane Nielsen, NBI1 Status of the FMD Børge Svane Nielsen Niels Bohr Institute FMD 1 FMD 3 FMD 2 Outer ring Inner ring.

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Presentation on theme: "Technical Forum, 8 March 2007Børge Svane Nielsen, NBI1 Status of the FMD Børge Svane Nielsen Niels Bohr Institute FMD 1 FMD 3 FMD 2 Outer ring Inner ring."— Presentation transcript:

1 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI1 Status of the FMD Børge Svane Nielsen Niels Bohr Institute FMD 1 FMD 3 FMD 2 Outer ring Inner ring

2 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI2 Test beam results 680 MeV e - beam test at ASTRID ring, Aarhus University, DK 5 FMD modules (5120 channels) e - beam

3 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI3 FMD3 cone FMD3 support cone also supports the beam pipe by 4 tensioned wires Test with final cone and wire mechanism shows <10 um deformations. Mock-up beam pipe support ring.

4 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI4 Digitizer cards and RCU bus cables Digitizer cards on detector based on TPC FEC design, (designed at NBI) 3 ALTROs + Board Contr. 2 versions (inner, outer) 3 m bus cable to RCU gave many problems, until we changed from ‘standard’ ALTRO bus to twisted pair cables. 40 bit signal + 10 grounds 40 bit signal + 40 grounds adaptor

5 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI5 Test after assembly Test of noise (pedestal width) for half inner ring (5 modules, 5120 strips) after final assembly Pattern understood from strip and printed circuit lengths All S/N above 20

6 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI6 FMD2 support IP FMD support is a relatively simple carbon fibre sandwich structure cylinder. Mounting flap Honeycomb detector mounting plates

7 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI7 Assembly of FMD3

8 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI8 Completed FMD3 Both halves of FMD3 were completed last week

9 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI9 … and then FMD2 Both halves of FMD2 to be/were completed this morning

10 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI10 Conclusions  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)

11 Technical Forum, 8 March 2007Børge Svane Nielsen, NBI11 … 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


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