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D Cockerill, RAL, 8 June 2005 Dee in testbeam ProposalP Bloch, C Seez, Y Sirois Dee calibration in test beam Last period of 2006, November Heavy ions,

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Presentation on theme: "D Cockerill, RAL, 8 June 2005 Dee in testbeam ProposalP Bloch, C Seez, Y Sirois Dee calibration in test beam Last period of 2006, November Heavy ions,"— Presentation transcript:

1 D Cockerill, RAL, 8 June 2005 Dee in testbeam ProposalP Bloch, C Seez, Y Sirois Dee calibration in test beam Last period of 2006, November Heavy ions, so highest E  ~ 100 GeV ChallengeTo use existing H4 infrastructure GoalGet maximum benefit for EE (and ES?)

2 D Cockerill, RAL, 8 June x5 SC array for the test beam in Nov 2006 Dee Calibration Nov 2006

3 D Cockerill, RAL, 8 June 2005 VPT sorting by SC position Old data Mean ~33 e/MeV now

4 D Cockerill, RAL, 8 June 2005 TT26  =1.57 TT19  =2.5 SC region on Dee Backplate angle as for beam from CMS I.P.

5 D Cockerill, RAL, 8 June 2005 ‘Any 5’ trigger map DCC boundary TCC boundary Appropriate any five trigger mapping

6 D Cockerill, RAL, 8 June 2005 Problem of OPAL frames Dee frame is an enormous device 3,6 tonnes in weight Will exceed EB turntable weight limit Use it only to transfer Dee to H4, if at all Dee backplate ~ 1.9 tonne with crystals Mount Dee on plinth on the H4 turntable Dee backplate angled to beam with appropriate support struts Need FEA to check Dee rigidity

7 D Cockerill, RAL, 8 June 2005 This part of Dee empty, No weight Beam Avoid pivot support Avoid vertical movement screw Special H4 environmental screen Dee on H4 turntable

8 D Cockerill, RAL, 8 June 2005 Benefits of the proposed siting of Dee on turntable Vertical rotation - in 2004, SCs moved in an arc – difficult to follow scheme SCs move ~vertically - unfortunately radius of rotation only ~ 1m Horizontal rotation - in 2004 adjacent SCs were not horizontal after rotations in the vertical scheme, a better x-y grid of xtal positions for data taking/analysis H4 turntable constraints

9 D Cockerill, RAL, 8 June 2005 Readout needed for 20 SCs 100 trigger GOH 20 data GOH Short fanouts on Dee FE – DCC20 optical lines= 2 short fanouts (24 lines) FE – TCC100 optical lines= 9 short fanouts (108 lines) MEM 24 optical lines= 2 short fanouts Totals144 optical lines 13+1 = 14 short fanouts MPO trunk cables from Dee to H4 CR (barrel had MFS trunk cables at SM10 end) 2 trunk cables2*96 = 192 lines +1 trunk cable for CCS/token rings/MEM Dee patch panel MPO H4 control room Short fanouttrunk cable

10 D Cockerill, RAL, 8 June 2005 UK opportunities Monte Carlo appraisalComparison – testbeam to Monte Carlo Identify particular regions needing close study Use current geometry in OSCAR or update to XML? Way in to EE/ES reconstruction algorithms – urgently needed – no one doing this! Assembly of 20 SCsVPT database Bare SC assembly Pre-production HV cards Pre-production umbilicals Trigger mapping and checking HV systemFinal HV system + fanout HV box All software drivers completed VPT stability LEDsAt least one system required EE test beam/analysisOpportunities for the UK to take leading roles………

11 D Cockerill, RAL, 8 June 2005 Additional info

12 D Cockerill, RAL, 8 June 2005 Noise across Dee Transverse noise across Dee, VPTs sorted E T from 30 – 60 MeV (old normalisation)


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