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CMS 4-Hybrid Thermal Test System Update: Progress and Future Plans

Updates on the CMS 4-Hybrid thermal test system's status, including test procedures, cold box system progress, cooling rate studies, test runs, and future plans for calibration and improvements. Communication with CERN for system enhancements.

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CMS 4-Hybrid Thermal Test System Update: Progress and Future Plans

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  1. UCSB 4-Hybrid Thermal Test System Status 28 July 2003 Sam Burke UCSB HEP Group CMS 4-Hybrid Test System Sam Burke EE

  2. Progress • Dry Air Bubbler arrived • Ordered replacement low air flow sensor • Work on 4Hybrid Test Procedure • Test Time estimated at 57 minutes CMS 4-Hybrid Test System Sam Burke EE

  3. Cold Box System CMS 4-Hybrid Test System Sam Burke EE

  4. Progress • Cooling Rate Study • Chiller water temperature • Room Temp / Dew Point / 5 deg C • Communications with Bruno @ CERN • LVDS-TTL Converter • Safety Switch feature in acdc.vi CMS 4-Hybrid Test System Sam Burke EE

  5. Test Procedure 1. Install 4 hybrids 3 min 2. Close cover and purge 4 min ARC Test 3. Seal box when RH<20% 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 CMS 4-Hybrid Test System Sam Burke EE

  6. Cold Box System Test Runs test 2 test 3 CMS 4-Hybrid Test System Sam Burke EE

  7. Cooling Rates • TEST 2: T=50 min • 3.0 L/m air, 1.0L/m @17 min, 14g/hr 11deg C Water • TEST3: T=32 min • 0.2 L/m air, 16g/hr 11 deg C Water\ • CERN Rate: T=20 min CMS 4-Hybrid Test System Sam Burke EE

  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/min*volt +-3% CMS 4-Hybrid Test System Sam Burke EE

  9. Future Plans • Calibrate UCSB Hybrid Cold Box after sealing • CERN Box is (18+20)/25min on cooling • CERN Box is (20+18)/3min on heating • Test 4 Hybrid ARC Stand • System move into clean room CMS 4-Hybrid Test System Sam Burke EE

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