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UCSB 4-Hybrid Thermal Test System Status

UCSB 4-Hybrid Thermal Test System Status. 13 October 2003 Sam Burke Lance Simms UCSB HEP Group. Progress. Pulser sync problem resolved No LVDS Trigger pulse from ARC VME Controller board Discovered ARC VME Controller board assembly error Complete 4 Hybrid-PA Test time of 42 min.

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UCSB 4-Hybrid Thermal Test System Status

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  1. UCSB 4-Hybrid Thermal Test System Status 13 October 2003 Sam Burke Lance Simms UCSB HEP Group CMS 4-Hybrid Test System Sam Burke EE

  2. Progress • Pulser sync problem resolved • No LVDS Trigger pulse from ARC VME Controller board • Discovered ARC VME Controller board assembly error • Complete 4 Hybrid-PA Test time of 42 min CMS 4-Hybrid Test System Sam Burke EE

  3. Progress • Complete testing of newly bonded Hybrid/PA’s • Hybrid 30216711500708 • Introduced intentional open wire-bonds in one Hybrid/PA which were detected during testing. CMS 4-Hybrid Test System Sam Burke EE

  4. Pulser Troubleshooting • Pulser had been triggering on noise. Needs to be synchronized with ARC Clock . • Twisted cable from ARC Controller card used • Eliminated noise in UCSB LVDS/CMOS Converter • No LVDS signals from ARC Controller Card CMS 4-Hybrid Test System Sam Burke EE

  5. ARC Controller Problem • LVDS Driver and LVDS Receiver U32 and U33 were switched during board assembly. Problem was never discovered. • External Buss connector and associated IC’s on lower left of photo. U32 CMS 4-Hybrid Test System Sam Burke EE

  6. ARC Controller Problem • ARC Controller Boards with functioning External Buss • Ser 29 • Ser 31 • U32 and U33 Switched on these boards causing inoperative External Buss function. • Ser 56 • Ser 57 • Ser 59 CMS 4-Hybrid Test System Sam Burke EE

  7. Cold Box in Clean Room CMS 4-Hybrid Test System Sam Burke EE

  8. CMS 4-Hybrid Test System Sam Burke EE

  9. 3 Open H/PA wire bonds CMS 4-Hybrid Test System Sam Burke EE

  10. Installing Hybrid/PA’s CMS 4-Hybrid Test System Sam Burke EE

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

  12. Recent Test Sequence CMS 4-Hybrid Test System Sam Burke EE

  13. 4Hybrid Temp Test Report CMS 4-Hybrid Test System Sam Burke EE

  14. New ARC Ground Straps CMS 4-Hybrid Test System Sam Burke EE

  15. Future Plans • Install copper grounding bars at each hybrid test position to reduce noise levels • this method has been tested and verified • Reduce mass of aluminum hybrid test position base plate • Reduce thermal mass of chamber to reduce test time CMS 4-Hybrid Test System Sam Burke EE

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