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CMS week – December 8-12, 20031 TOB sensor quality Regina Demina University of Rochester.

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Presentation on theme: "CMS week – December 8-12, 20031 TOB sensor quality Regina Demina University of Rochester."— Presentation transcript:

1 CMS week – December 8-12, 20031 TOB sensor quality Regina Demina University of Rochester

2 CMS week – December 8-12, 20032 OutlineOutline Stability of IV Leaky strips

3 CMS week – December 8-12, 20033 IV vs time Current at 400V FNAL remeasurement vs DB 3/61 failed on retest 0/65 failed on retest 17/250 failed on retest

4 CMS week – December 8-12, 20034 IVCV no vacuum effect so far Sensor left on chuck for several hours between measurements 1 and 2. Just needed rest?

5 CMS week – December 8-12, 20035 I leak and I strip

6 CMS week – December 8-12, 20036 SummarySummary Some instability of I leak vs time is observed 2002 sensors seem to be the worst, fraction of originally passed sensors failing retests –6.8% 2003 sensors look better (but maybe not enough time) I leak increase seems to be related to leaky strip development

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