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The CMS ECAL Endcaps

The CMS ECAL Endcaps. UK Responsibilities Procurement and testing of VPTs Design and procurement of the VPT HV system Design/procurement of the mechanical structures Electronics systems integration SC and Dee assembly Test beam appraisal and analysis. EE front end readout.

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The CMS ECAL Endcaps

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  1. The CMS ECAL Endcaps • UK Responsibilities • Procurement and testing of VPTs • Design and procurement of the VPT HV system • Design/procurement of the mechanical structures • Electronics systems integration • SC and Dee assembly • Test beam appraisal and analysis UK CMS Oversight Committee Mtg 23.5.2008

  2. EE front end readout VPTs SC HV cardsUmbilical cables EE Motherboards All delivered EE VFE cards EE FE cards Polyethylene moderator UK CMS Oversight Committee Mtg 23.5.2008

  3. Naked SC assembly rates 16/wk ‘Naked’ SC assembly All 14648 VPTs and crystals glued All SCs completed(Monday of this week!) Nov OsC Naked SC assembly rate, per week UK CMS Oversight Committee Mtg 23.5.2008

  4. SC assembly Plot:Crystal deliveryNaked SC assemblyHV tested SCs • - All SCs HV tested and ready or mounted on Dees Nov OsC UK CMS Oversight Committee Mtg 23.5.2008

  5. Dee assembly – SC mounting 1 Dee 23 May 08 SC mounting Dees 1-3 SC mounting completed Dee4 completed by today, 23.5.08 1 Quad Nov OsC UK CMS Oversight Committee Mtg 23.5.2008

  6. Power cooling Super unit to be welded together Power cooling 2 of the 8 versions of ‘super cooling units’ needed per Dee Each is a fully welded and tested system The last 2 (of 32) have been completed this week and are undergoing pressure/leak tests Transferframe A fully welded column of 2 cooling blocks UK CMS Oversight Committee Mtg 23.5.2008

  7. Dee4 Dee4 As of Thursday, 9 left to mount Expect mounting to be completed by Fri 23.5.08. UK CMS Oversight Committee Mtg 23.5.2008

  8. Dee3   Dee3 HV looming completed Moderator mounted Stability fibres and LV mounted Trigger mapping into readout motherboardscompleted (this photo) UK CMS Oversight Committee Mtg 23.5.2008

  9. Dee2 OPAL transfer frame to point 5 Dee2 with its complete set of SCs Dee2All super cooling units mountedInstallation of VFE and FE cards underway UK CMS Oversight Committee Mtg 23.5.2008

  10. Dee1   Dee1All electronics in placeAll towers tested and working Dee1Fibre optic readout support panels in place, ready for final fibre optic routing UK CMS Oversight Committee Mtg 23.5.2008

  11. EE Assembly and Integration Status Dee Assembly and Integration Status, 22.5.2008 Dees 1–3 All 10986 channels checked and OK for signal continuityDee1 Single tower readout – pedestal width on all channels ~2ADC counts in line with expectations for electronics noise of 3500-4000 electrons per channel UK CMS Oversight Committee Mtg 23.5.2008

  12. EE Risks Insufficient ECAL effort (ED/ID) Continually monitored New cooling scheme At end of production Electronics integration Good progress, teams in place Cable crimps All replaced, checked at each level of subsequent integration Fibre optic routing – possible delays/misrouting Database ready. Routing on Dee1 commencing UK CMS Oversight Committee Mtg 23.5.2008

  13. EE Risks (cont’d) Installation and commissioning at point 5 ECAL installation and commissioning led by K Bell (RAL)Brings full experience from the mounting of the36 supermodules for the barrel ECAL Point 5 installation and commissioning team established Team involves CERN CMS (point 5) and CERN ECAL engineers and techniciansand a dedicated ECAL DAQ team Weekly meetings Detailed installation sequence in place, from surface of point 5 to mounting on HE Commissioning will be carried out in sectors with close feedback from the DAQ/DQM teams UK CMS Oversight Committee Mtg 23.5.2008

  14. Planning for EE Dee1 and Dee2 at point 5, r.f.i. by 16 June 2008Dee3 and Dee4 at point 5, r.f.i. by 21 July 2008 UK CMS Oversight Committee Mtg 23.5.2008

  15. Conclusions SC assembly and mounting on Dees (nearly) completed Good progress with the installation of electronics and services on Dees 1-3 Dee1 and Dee2 to point 5 by 16 June Dee3 and Dee4 to point 5 by 21 July UK CMS Oversight Committee Mtg 23.5.2008

  16. Other info UK CMS Oversight Committee Mtg 23.5.2008

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