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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: 182
Entry time: Fri Apr 3 17:29:51 2020
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| Author: |
Andrey Starodumov |
| Category: |
Full test |
| Subject: |
FT of M1557, M1591, M1649, M1651 |
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M1557: C due to 214 pixel threshold failure in ROC4 only at +10C (several previous FTs at +10C were graded B!)
M1591: B due to mean noise > 200electrons for several ROCs
M1649: C due to 270 pixel threshold failure in ROC11 only at +10C
M1651: B due to mean noise > 200electrons for several ROCs
For both modules C grading is an artifact. Should decide how to proceed with such cases.
M1557 and M1649 will be placed for the moment in C* tray. |