Status on the VELO sensors in the vacuum chamber Gwen & Ray 08/14/2007.

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Presentation transcript:

Status on the VELO sensors in the vacuum chamber Gwen & Ray 08/14/2007

P-type : IV at low Temperature

P-type : repeatability measurement Blue, red, black : ~ 1E-5 mbar Green : ~ 1E-3 mbar Temperature from -10°C or -30°C to room temperature Factor 2 over 40 °C

P-type : stability measurement Room Temperature : ~ 20 °C Low Pressure : ~ 9e-6 mbar 2 days of data, interval of 10 min between each 10%

N-type : stability measurement ~1% Room Temperature : ~ 21.5 °C Low Pressure : <1e-4 mbar from t=20 16h of data, interval of 5 min between each

N-type : stability measurement ~3%

P-type : I vs P