Difference between revisions of "CDC signal integration"
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|[[Image:run_31765_integdx.png|thumb|x250px|Tilted at 45 degrees]] | |[[Image:run_31765_integdx.png|thumb|x250px|Tilted at 45 degrees]] | ||
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| − | + | The ratio of tilted to horizontal integration means is 1.24 whereas the ratio of track length is ~ 1.4. | |
Revision as of 10:32, 20 June 2012
50/50 gas, 2100V
- Caveat: data were with preamp underpowered, 2.65V on preamp card ****
Try to calculate dE/dx
The ratio of tilted to horizontal integration means is 1.24 whereas the ratio of track length is ~ 1.4.
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
