UK CMS Oversight Committee Mtg 23.5.2008 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

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

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

UK CMS Oversight Committee Mtg 23.5.2008 SC assembly Plot: Crystal delivery Naked SC assembly HV tested SCs - All SCs HV tested and ready or mounted on Dees Nov OsC UK CMS Oversight Committee Mtg 23.5.2008

Dee assembly – SC mounting 23 May 08 1 Dee 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

Super unit to be welded together 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 Transfer frame A fully welded column of 2 cooling blocks UK CMS Oversight Committee Mtg 23.5.2008

UK CMS Oversight Committee Mtg 23.5.2008 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

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

OPAL transfer frame to point 5 Dee2 OPAL transfer frame to point 5 Dee2 with its complete set of SCs Dee2 All super cooling units mounted Installation of VFE and FE cards underway UK CMS Oversight Committee Mtg 23.5.2008

UK CMS Oversight Committee Mtg 23.5.2008 Dee1   Dee1 All electronics in place All towers tested and working Dee1 Fibre optic readout support panels in place, ready for final fibre optic routing UK CMS Oversight Committee Mtg 23.5.2008

Dee Assembly and Integration Status, 22.5.2008 Dees 1–3 All 10986 channels checked and OK for signal continuity Dee1 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

UK CMS Oversight Committee Mtg 23.5.2008 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

UK CMS Oversight Committee Mtg 23.5.2008 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 the 36 supermodules for the barrel ECAL Point 5 installation and commissioning team established Team involves CERN CMS (point 5) and CERN ECAL engineers and technicians and 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

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

UK CMS Oversight Committee Mtg 23.5.2008 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

UK CMS Oversight Committee Mtg 23.5.2008 Other info UK CMS Oversight Committee Mtg 23.5.2008