Difference between revisions of "CDC signal integration"
From GlueXWiki
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− | 50/50 gas, 2100V | + | 50/50 gas, 2100V (left column(s)) 2090 (right column(s)) |
− | **** Caveat: data were with preamp underpowered, 2.65V on preamp card **** | + | **** Caveat: LHS data were with preamp underpowered, 2.65V on preamp card; RHS data were with 3.0V @ preamp card**** |
Revision as of 10:42, 2 July 2012
50/50 gas, 2100V (left column(s)) 2090 (right column(s))
- Caveat: LHS data were with preamp underpowered, 2.65V on preamp card; RHS data were with 3.0V @ 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