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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: 33
Entry time: Tue Nov 19 14:10:10 2019
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| Author: |
Andrey |
| Category: |
Cold box tests |
| Subject: |
new modules M1533 and M1534 |
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Yesterday Silvan wire bonded two new modules M1533 and M1534 that are both grade C due to high leakage current and a few ROCs with large number of defective bump bonds.
Today I run Reception1st test with IV at +10C for both modules and above features are confirmed.
The IV curves present on a MoreWeb webpage but the values of a leakage current in the table under the curve is 0A (?). May be it relates to the fact that it should be current at -150V shown,
while the voltage scan stops at -130V since one of the modules draw 98umA current at this voltage. If it so, the MoreWeb script should be corrected: the current taken at -150V or if voltage
is lower then it is taken at the last (highest) value.
Tomorrow a FullQualification will be run on both modules. |