1. D. Gasser ST/CV 1 Fluid distribution from UW85 Fully available now.

2. D. Gasser ST/CV 2 Available performances in UX85 Flow rateCooling power ΔTΔTΔPΔP Mixed water215 m 3 /h1.5 MW13/19 o C2 bars Chilled water50 m 3 /h350 kW (up to 500 kW if needed) 6/12 o C2 bars Demineralised water 150 m 3 /h5 MW27/56 o C10 bars

3. D. Gasser ST/CV 3 Cooling fluid distribution in UX85

4. D. Gasser ST/CV 4 Counting rooms (I) Heat loads on the water network RoomHeat dissipated by the electronics (released to mixed water) Heat released in the ambient (estimation) Cooling capacity of the ventilation unit (released to chilled water) D1580 kW35 kW2*30 kW D2490 kW30 kW2*30 kW D3/A120 kW10 kW15 kW D3/B120 kW10 kW30 kW Total1310 kW165 kW

5. D. Gasser ST/CV 5 Air flow measurement Update the control system (new regulation components and PLC) Change the electrical heating coil Modify the air-duct and/or motor/fan set if necessary An work quotation is being done Counting rooms (II) Work to be done on the ventilation units

6. D. Gasser ST/CV 6 Integration of the piping in the UX85 cavern Modify mixed water piping on D3/B room Add chilled water piping on D3/B room Connection of each room to mixed and chilled water network with necessary instrumentation (flow-meters, temperature probes) Counting rooms (III) Work to be done on the water network

7. D. Gasser ST/CV 7 LHC’b sub-detectors and electronics Heat loads on the water network ItemHeat dissipated to chilled water Heat dissipated to mixed water IT and TT25 kW (conservative estimation on the chillers condenser side) IT and TT services boxes8.5 kW RICH 1 and 212 kW (8kW*1.5 safety coefficient) OT 22.5 kW OT power supply boxes 4 kW VELO12 kW VELO vacuum pumps1 l/min/pump Calorimeter23.2 kW??? Muons24 kW??? Total49 kW82.2 kW + ?

8. D. Gasser ST/CV 8 Whole LHC’b area Heat loads on the water network ItemHeat dissipated to chilled water Heat dissipated to mixed water LHC’b subdetector and electronics 49 kW85 kW Counting rooms165 kW1310 kW Total214 kW (vs 350 kW available) 1395 kW (vs 1500 kW available)

9. D. Gasser ST/CV 9 Workpackages OT cooling station with transfer lines (end by 06/2005) IT + TT cooling station with transfer lines (end by 11/2005) RICH1 and 2 cooling station with transfer lines (end by 11/2005) VELO cooling station with transfer lines (end by ??) Connection of muons, calorimeters, IT and TT services boxes, OT power supply box, VELO vacuum pumps (end by ??) Connection of counting houses (end by ??)

10. D. Gasser ST/CV 10 Important topic yet to be clarified Integration of VELO local control system to the supervision (to be discussed with NIKHEF) Muons and calorimeters: –Heat dissipation to be confirmed –Number and location of connection points to the mixed water-network Services boxes for IT and TT, power supply box for OT, vacuum pumps for VELO: –Number and location of connection points to the mixed water-network