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CMS Pixel Detector
Miscellaneous
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Phase 1
Phase 2
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Layer 1 Replacement
Layers 2-4
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| Layer 1 Replacement Elog |
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Message ID: 222
Entry time: Tue Apr 21 15:34:57 2020
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| Author: |
Andrey Starodumov |
| Category: |
General |
| Subject: |
Retesting starts today |
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From today we will retest modules that have been tested with pXar SW versions earlier than March 18.
There were a few changes before this date:
1) trimming VCal: 40->50
2) threshold at which trim bit test is done
3) improvements in PH optimization algorithm
No changes in test algorithm have been introduced since March 18.
All modules have been tested with CtrlReg=9, for this several modules failed at +10C.
From now on for test CtrlReg=17 will be used.
Ft will be shorter: only one test at -20C, no T-cycling and one test at +10C. Leakage current will be measured up to 200V. |