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Electrical Measurements on stave S4028

Electrical Measurements on stave S4028. Claudia, Fabrizio, Illona After loading, we have done a quick test (RECV) using a single module setup (MAC-based) to see if any large damage was there => all 13 modules were fine.

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Electrical Measurements on stave S4028

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  1. Electrical Measurements on stave S4028 Claudia, Fabrizio, Illona After loading, we have done a quick test (RECV) using a single module setup (MAC-based) to see if any large damage was there => all 13 modules were fine. LOAD test is on-going (9/13) using a SURF-based setup to run more modules sequentially.

  2. We run the LOAD test powering one module at a time. For example at this time, Module 1 is on , the others are off

  3. It takes 3 hours to test 4 modules Test module2 Test module 3 Test module 4 Test module1 IV scan on mod 2 Dig/Anl scans on mod 2

  4. MODULES 1-4 TEMPERATURE We run the LOAD test powering one module at a time. However modules are warmer when a neighboring is powered. 510358 511213 510917 510847 Cooling flow

  5. In few modules we have observed this typical pattern of bad pixels (they are disconnected bad). More investigation is needed to understand if they are real ones or something else.

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