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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: 231
Entry time: Fri Apr 24 13:59:43 2020
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| Author: |
Andrey Starodumov |
| Category: |
Full test |
| Subject: |
FT of M1568, M1569, M1570, M1571 |
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M1568: Grade B due to mean noise >200e for a few ROCs and for ROC0 RelGainWidth(=0.1) is twice larger then for other ROCs
M1569: Grade B due to mean noise >200e for a few ROCs
M1570: Grade B due to mean noise >200e for a few ROCs
M1571: Grade C due to trimming for 190 pixels failed in ROC4 at +10C. This is not real failure, the first time this module has been tested the grade was B at 10C (while trimming was done for VCal=40)
M1571 goes to C* tray. Solution: either repeat the current test or test only at +10C and merge later. |