CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 1 The CMS Electromagnetic Calorimeter 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 calibration and analysis

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 2 VPTs VPTs delivered - includes 300 tubes to replace tubes failing magnet tests Remaining 300 replacement tubes expected by end of year ~8500 VPTs now at CERN ~1000 reception tested under HV

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 3 VPT HV distribution system Design in progress at RAL 2 CAEN HV supplies, one for each endcap Interface to PVSS slow controls system Feeds modular units, 12 Supercrystals per pcb Incorporates safety issues, both for personnel and equipment CAEN crates and HV distribution prototype: Q1 2007

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 4 EE integration – cooling blocks Cooling bars All cooling bars delivered to CERN and inspected Total 157 short and 404 long Cooling blocks 2 pre-series completed Pressure tested to 25 bar – OK Vacuum tests with Helium - OK Launch manifold mass production by end of year if tests OK on the 10 cooling blocks for Dee4 First of 2 pre-series EE cooling blocks Detail of the electron beam welding on the manifold lids

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 5 SC assembly 10 recently constructed SCs in their assembly jigs in the crystal palace complete with HV cards and umbilical cables Dee4 14 SCs completed out of 20 Awaiting further EE crystals HV soak tests next step SC assembly rates Target 12/week (300 crystals/VPTs) Experience in SCs assembled/day with a team of 2 people 2 teams planned for SCs fitted with HV cards and umbilicals per person per day 2 people planned for 2007

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 6 Electronics performance on Dee4 4 SCs mounted on Dee4 for noise testsEE readout electronics mounted on Dee4 for noise tests Preliminary results, per channel SC e- SC e- SC e- SC e- Crosstalk <0.1% These meet the EE requirements SC6 as close to final as possible

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 7 EE Supercrystal readout SC HV cards 70 of 100 pre-production cards installed in SCs for Dee4 Contract for mass production of 3100 cards imminent (Elfab, Switzerland) HV card tester2 systems being prepared at Bristol One for company, one for tests on receipt at CERN Umbilicals Production in house at CERN Assembly started

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 8 EE front end readout EE Motherboards Production contract imminent (Ascom, paid by ETH-Zurich) 25 pre-series for Dee4 by Mid Jan production cards by ~ end April 2007 EE VFE cards 2130 produced, final 1000 end Nov Awaiting VFE housings (imminent) for burn-in tests at Lyon EE FE cards All 800 FE boards delivered from Hitachi 600 burnt-in at PSI, only 2 failures 400 boards validated at LLR Project finished by end of the year/early 2007 Polyethylene moderator Under production at Energia (Moscow) Delivery for all 4 Dees in Q1 2007

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 9 Motherboard wiring - Trigger tester Status of trigger tester Close to checking data versus SC position on Dee Rationalise system, Labview and ECAL DAQ onto one PC Bristol and University of Virginia Configurable test patterns Corresponding signals seen out of SC Top left – a 2x2 sub array not wired up completely

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 10 EE Planning Possible actions to increase throughput, using skill base from barrel assembly: Dee33 shifts per 2 days for electronics and digital, fibre optic, readout Dee42 shifts per day for electronics and digital, fibre optic, readout Dee4 benefits from the 20 SCs (500 crystals) already assigned in 2006

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 11 EE Risks Insufficient ECAL effort (ED/ID) Continually monitored Resources to be sought firstly from elsewhere in CMS EE/ECAL CERN VPT to crystal gluing now part of their programme Russia SC assembly started this year, commitments for 2007 UVa Offers of help for SC assembly in 2007 Redesign of ECAL electronics Production of EE VFE and EE FE nearly complete Fraction of VPTs fail specifications Replacements sent from production company ECAL crystal production Remains critical path item

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 12 EE Status - Conclusions Good progress with VPT production SC assembly Electronics Cooling infrastructure Dee4 assembly preparation EE programme constrained by crystal delivery

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 13 Additional info follows, next slide

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 14 Additional info follows, next slide Remaining procurements/spend for EE UK project (>£50k): ComponentFY 2006/7 (£k) FY 2007/8 (£k) SC HV cards1010 SC umbilicals1130 SC and Dee assembly staff37315 Electronics cooling on the backplate1810 Assembly – OPAL frames076 VFE/LV housings5012 Mechatronics (mechanical/electrical interfaces)14030 Total622433

CMS-UK Oversight Committee 17/11/06 D.J.A. Cockerill - RAL 15 The CMS Electromagnetic Calorimeter Barrel: 36 Supermodules (18 per half-barrel) Crystals Total mass 67.4 t Tapered crystals Pointing ~ 3 o from vertex Endcaps: 4 Dees (2 per endcap) Crystals Total mass 22.9 t