UCSB 4-Hybrid Thermal Test System Status

1
UCSB 4-Hybrid Thermal Test System Status
28 July 2003 Sam Burke UCSB HEP Group
2
Progress

• Dry Air Bubbler arrived
• Ordered replacement low air flow sensor
• Work on 4Hybrid Test Procedure
• Test Time estimated at 57 minutes

3
Cold Box System
4
Progress

• Cooling Rate Study
• Chiller water temperature
• Room Temp / Dew Point / 5 deg C
• Communications with Bruno _at_ CERN
• LVDS-TTL Converter
• Safety Switch feature in acdc.vi

5
Test Procedure

• 1. Install 4 hybrids 3 min
• 2. Close cover and purge 4 min ARC Test
• 3. Seal box when RHlt20 5 min
• 4. Reduce air flow to 0.2 L/m 1 min
• 5. Start Cold Cycle 32 min
• 6. Stable Temperature 5 min ARC Test
• 7. Start Heat Cycle 4 min
• 8. Stable Temperature RH 3 min ARC Test
• TOTAL 57 min

6
Cold Box System Test Runs
test 2
test 3
7
Cooling Rates

• TEST 2 T50 min
• 3.0 L/m air, 1.0L/m _at_17 min, 14g/hr 11deg C
  Water
• TEST3 T32 min
• 0.2 L/m air, 16g/hr 11 deg C Water\
• CERN Rate T20 min

8
Future Plans

• Seal up air leaks in Cold Box
• Continue write-up of Test Procedures
• Verify Air Flow sensor calibration
• New FR1005 Air 0.40 L/minvolt -3

9
Future Plans

• Calibrate UCSB Hybrid Cold Box after sealing
• CERN Box is (1820)/25min on cooling
• CERN Box is (2018)/3min on heating
• Test 4 Hybrid ARC Stand
• System move into clean room