Difference between revisions of "CDC signal integration"
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# CDC Update | # CDC Update | ||
− | ## Construction Update [[Image:cdc_insects1.jpg|thumb| | + | ## Construction Update [[Image:cdc_insects1.jpg|thumb|none|x30px]][[Image:cdc_insects2.jpg|thumb|none|x30px]] |
## Cosmic Calibration of the Chamber | ## Cosmic Calibration of the Chamber | ||
Revision as of 10:23, 20 June 2012
50/50 gas, 2100V
- Caveat: data were with preamp underpowered, 2.65V on preamp card ****
- CDC Update
- Construction Update
- Cosmic Calibration of the Chamber
Try to calculate dE/dx
This does not scale very nicely with track length.
Track length is calculated in the plane parallel to the endplates (no z information) so I scaled it by the tilt of the prototype for the 45 degree data, the upper cosmic trigger scintillator is high up enough that the cosmics are ~ vertical
Look at time over threshold...
Peak duration is # samples after the lower threshold crossing until the ADC value decreases by 2sigma over 2 samples, this is a measure of time over threshold in units of 8ns