1. MVD COOLING STATUS COOLING PLANT UPDATE: -ADDITION of the NEW CIRCUITS FOR GBT AND DC-DC Converter BOARDS IN THE COOLING PLANT -THERMAL STUDY OF GBT AND DC-DC CONVERTER -DEFINE OF THE PIXEL, STRIP AND SEVICES MODULARITY -INTEGRATION OF THE MVD COOLING CIRCUIT PATHS INSIDE THE PANDA AREA -DEFINITION OF THE PACKAGE SECTION OF ALL THE COOLING TUBE ALONG THE PATH -EVALUATION OF PRESSURE DROPS ALONG THE PATH -INSERTION OF PATCH PANELS -OPEN QUESTIONS S.COLI - DEC.20141

2. PIXEL - 42 TUBES: 65 m INLET and 65 m RETURN outside the magnet 2,5 m INLET and 2,5 mt RETURN inside the magnet 2,3 m in the MVD (53 U tubes) WATER VOLUME: about 160 liters MASS FLOW RATE: about 16 lit/min COOLING CIRCUITS: 21 TUBE MODULARITY: circuits with 3 U tubes + circuits with 2 U tubes (0,3 lit/min each U tube) STRIP - 44 TUBES: 65 m INLET and 65 m RETURN outside the magnet 2,5 m INLET ad 2,5m RETURN inside the magnet 2, 7m in the MVD WATER VOLUME: about 190 liters MASS FLOW RATE: about 10 lit/min COOLING CIRCUITS: 22 TUBE MODULARITY: circuits with 3U tubes + circuits with 2 U tubes + Disk-Tubes (0,3 lit/min each tube) SERVICES - 64 TUBES: 65 m INLET and 65 m RETURN outside the magnet 2 m INLET ad 2m RETURN inside the magnet 1 m in front of MVD WATER VOLUME: about 270 liters MASS FLOW RATE: about 30 lit/min COOLING CIRCUITS: 32 TUBE MODULARITY: 32 circuits (0,9 lit/min each) DIMENSION of the HYDRAULIC CIRCUIT for MVD SYSTEM (PIXEL + STRIP + SERVICES): S.COLI - DEC.2014 2 SUMMARING About 640 lit About 56 lit/min About 75 circuits 150 Tubes

3. GBT Boards: Wing in Al (175 W/mK) Tube Φ in 5 mm, Φ est 6 mm in SS (15W/mK) Chip Area = 20mm*20mm Power Flux= 10000W/m 2 TOT Power= 64W (=4*16 GBT boards) WING DIMENSIONS: 12mm X30mm X780mm INNER WATER TEMP=18°C WATER FLOW RATE= 0,9lit/min Alpha= 1700W/m 2 K Ideal contact between tube and wing Glue layers neglected S.COLI - DEC.20143 GBT AND DC-DC CONVERTER BOARDS PRELIMINARY THERMAL ANALYSES DC-DC Converter Boards: Wing in Al (175 W/mK) Tube Φ in 5 mm, Φ est 6 mm in SS (15W/mK) Chip Area = 10mm*10mm Power Flux= 30000W/m 2 TOT Power= 132W (=3*44 DCDC-Converter boards) WING DIMENSIONS: 10mm X 25mm X 424mm INNER WATER TEMP=18°C WATER FLOW RATE= 0,9lit/min Alpha= 1700W/m 2 K Ideal contact between tube and wing Glue layers neglected

4. U tubes (  e 2mm.) in MP35N CIRCUITS FOR 3 U tubes CIRCUITS for 2 U tubes OUTSIDE MAGNET INSIDE MAGNET INSIDE MVD COOLING CIRCUITS INSIDE MVD INSIDE MAGNET OUTSIDE MAGNET  i 8 mm 0,9 lit/min  i 6 mm 0,9 lit/min  i 2,5mm 0,3 lit/min  i 10mm 0,9 lit/min  i 6mm 0,9 lit/min  i 2,5mm 0,3 lit/min  i 8 mm 0,6 lit/min  i 6mm 0,6 lit/min  i 2,5mm 0,3 lit/min  i 10 mm 0,6 lit/min  i 6mm 0,6 lit/min  i 2,5mm 0,3 lit/min MVD COOLIG CIRCUIT MODULARITY S.COLI - DEC.20144 CIRCUITS FOR DC-DC CONVERTER and GBT OUTSIDE MAGNET INSIDE MAGNET INSIDE MVD COOLING CIRCUITS  i 8mm 0,9 lit/min  i 6 mm 0,9 lit/min  i 10 mm 0,9 lit/min  i 6mm 0,9 lit/min PP3 PP4 U tubes (  e 5mm.) in SS316 5mt 2,5mt 1m +Utube 1m+Utube 2,5mt 5mt 5mt 2 Utube=1m

5. DIMENSION of the HYDRAULIC CIRCUIT for MVD SYSTEM (PIXEL + STRIP + SERVICES): TUBES FROM COOLING PLANT TO MAGNET: - 21+22+32 INLET LINES= 75 INSULATED TUBES [Diam ext. 16mm each+ insulation] - 21+22+32 RETURN LINES = 75 TUBES [Diam ext. 16mm] = 0,65 m* 0,15m total section for Tubes FROM COOLING PLANT TO PANDA (Stainless steel) IN FRONT OF THE MAGNET DOOR (PP4) -150 Pressure sensors (one on each tube) CLOSE TO MVD (immediately in front of the magnet) + fittings -150 Readout cables and Power supply TUBES INSIDE THE MAGNET (around the beam pipe) -8+8 Polyurethane tubes - inlet + return lines (diam. 6-8mm) for GBT Boards. -24+24 Polyurethane tubes – inlet + return lines (diam. 6-8mm) for DC-DC Converter Boards -43+43 Polyurethane tubes – inlet + return lines (diam. 6-8mm) for MVD internal patch panels -85+85 Polyurethane tubes- inlet + return lines (diam. 2,5-4 mm) from internal patch panels to MVD -8+24 U-Tubes for GBT and DC-DC Converter Boards in Stainless steel INSIDE THE MVD -53 U-tubes for PIXEL + 24 U-tubes for STRIPS + 8 Strip Disks in MP35N THE COOLING PLANT -PLC -Tank -Vacuum pump -Inlet pump + filter -Water cleaning unit -Manifolds and 75 inlet tubes -Manifolds and 75 return tubes -Heat exchanger -75 pressure regulator, + 75 flow meters + 75 valves on return lines + 75 water Temperature sensors -150 pneumatic valves -Other sensors (tank level indicator, pump pressure sensors, water temperature sensors…) S.COLI - DEC.2014 5

6. MVD HYDRAULIC CIRCUIT PNEUMATIC VALVES TEMPERATURE SENSORS FLOW METERS PRESURE REGULATORS HEAT EXCHANGER -PUMP -VACUUM PUMP -PLC -CONTROLS PRESSURE SENSORS COOLING PLANT PNEUMATIC VALVES S.COLI - DEC.20146

7. PANDA AREA S.COLI - DEC.2014 7 PANDA in ASSEMBLY POSITION PANDA FINAL POSITION MVD COOLING PLANT MVD TUBES PATH

8. S.COLI - DEC.20148 MVD COOLING PLANT – OUTSIDE THE PIT INLET RACKS (PIXEL, STRIP, SERVICES) PLC HEAT EXCHANGER (?) 3,8 mt 3,5 mt

9. S.COLI - DEC.2014 9 MVD COOLING PLANT – IN THE PIT RETURN RACKS (PIXEL, STRIP, SERVICES) TANK+ VACUUM PUMP INLET PUMP + WATER CLEANING UTIT

10. S.COLI - DEC.2014 10 MVD COOLING SYSTEM – INLET AND RETURN TUBES PATH INSIDE PANDA AREA TUBE PAKAGE SECTION ALL ALONG THE PATH [0,65m X 0,15 m] h= 2 mt INLET LINES RETURN LINES

11. S.COLI - DEC.2014 11 MVD COOLING SYSTEM – INLET AND RETURN TUBES PATH INSIDE PANDA AREA TUBE LENGHT:~ 65 m

12. S.COLI - DEC.2014 12 MVD COOLING SYSTEM– PATCHPANELS PP1: TRANSITION (FLEX-METAL TUBES) PP2: FOR ASSEMBLY PP3: FINAL PP4: PRESSURE SENSORS AND FITTINGS, AFTER CAL INSERTION PATH ? BEFORE CAL INSERTION

13. S.COLI - DEC.2014 13 MVD COOLING SYSTEM– REQUEST 1 THE RETURN TUBES AT THE HEIGHT OF THE FLOOR? CROSSING PROBLEM?

14. S.COLI - DEC.201414 MVD COOLING SYSTEM– REQUEST 2 CAN THE MVD OCCUPY THE RIGHT SIDE OF THE PIT? CROSSING PROBLEM? AVAILABLE AREA?

15. CIRCUITS FOR 3 U TUBESG[g/s]G[l/m]L[m]d i -d e [mm]V[m/s]ReP_drop[bar] INLET OUT OF THE MAGNET 150,9658-120,324000,2 INLET IN THE MAGNET 150,92,56-80,5332000,03 IN THE MVD (PIXEL) 50,30,3+1+11,84+2,51,88+134620,25+0,32 RETURN IN THE MAGNET 150,92,56-80,5332000,03 RETURN OUT OF THE MAGNET 150,96510-140,1920000,04 CIRCUITS FOR 2 U TUBES G[g/s]G[l/m]L[m]d i -d e [mm]V[m/s]ReP_drop[bar] INLET OUT OF THE MAGNET 100,6658-120,216000,06 INLET IN THE MAGNET 100,62,560,3522000,01 IN THE MVD (PIXEL) 50,30,3+1+11,84+2,51,88+134620,25+0,32 RETURN IN THE MAGNET 100,62,560,3522000,01 RETURN OUT OF THE MAGNET 100,66510-140,1313000,03 CIRCUIT FOR 1 U TUBE SERVICES G[g/s]G[l/m]L[m]d i -d e [mm]V[m/s]ReP_drop[bar] INLET OUT OF THE MAGNET 150,9658-120,324000,2 INLET IN THE MAGNET 150,926-80,5332000,03 IN THE MVD 150,9150,7638000,03 RETURN IN THE MAGNET 150,926-80,5332000,03 RETURN OUT OF THE MAGNET 150,96510-140,1920000,04 PRESSURE DROP IN THE COOLING CIRCUITS LIMIT=0,6 bar S.COLI - DEC.2014 15 LIMIT=0,6 bar

16. S.COLI - DEC.2014 16 MVD COOLING SYSTEM – QUESTIONS Can the return tube be located on the floor along the external wall? Can the MVD occupy the right side of the pit ? From where does the cold water arrive? AIR line at 6 bar? Where? Is the door a passage? Can we put the patch panels? The small patch panel4 on the floor held by the CAL support (charriot)? After CAL insertion, we need to cut tubes to patch panel 4 (?) The path for the flex tubes from PP3 to PP4?