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

2. Slide 2UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Status UCSB 4-Hybrid Thermal Test system is operational ARCS and ACDC software integrated so that test is a “one button” operation

3. Slide 3UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Setup in UCSB Clean Room

4. Slide 4UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE UCSB Cold Box

5. Slide 5UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Installing Hybrid/PA’s

6. Slide 6UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Pulser: Functional Pulser had been triggering on noise. Needs to be synchronized with ARC Clock. à Twisted cable from ARC Controller card used à Eliminated noise in UCSB LVDS/CMOS Converter No LVDS signals from ARC Controller Card

7. Slide 7UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE LVDS Signal? ARC Boards with functioning External Bus à Ser 29 à Ser 31 ARC Boards with non-functioning External Bus à Ser 56 à Ser 57 à Ser 59 LVDS Signal Noise

8. Slide 8UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE ARC Controller Problem Bad Batch of ARC BOARDS: 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

9. Slide 9UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE With Pulser Operational… Opens detectable in “Scope Mode” Intentionally Plucked Bonds Show up in Pedestal Profile

10. Slide 10UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE With Pulser Operational…. Opens are also detectable in Pedestal & Noise Test Plucked Bonds

11. Slide 11UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Grounding Issues Same Problem CERN was having…. Huge spikes in noise at APV edges

12. Slide 12UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Using their same method… Ground lines connected to Support plate by silver strip Problem Solved: No more spikes

13. Slide 13UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Thermal Cycle Test Test Time: ~42 min. Three Sets of Tests: Pedestal & Noise Pulser Short Detection

14. Slide 14UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE Automated Test Results Final Report After Thermal Cycle Test: Lists -Shorts -Opens -Noisy Channels

15. Slide 15UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE So Far At UCSB 6 Hybrids Bonded and Thermal Cycled 30216711300712 30216711600699 30216711500720 30216711500730 30216711500732 30216711500733 Serial # Shorts Opens Failure at -20 0 0 0 0 0 0 0 0 0 0 0 0 No

16. Slide 16UCSB CMS Weekly Status MeetingCMS 4-Hybrid Test System Sam Burke EE And Now… Building a new peltier plate in order to bring test time down Goal: Loading + Testing + Unloading in ~50 minutes Nevertheless, ready to thermal test on mass scale