Difference between revisions of "CDC run 2551 drift time fits"
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T->Scan("N","par6<35&&!status&&entries>100"); >batch.sh | T->Scan("N","par6<35&&!status&&entries>100"); >batch.sh | ||
</pre> | </pre> | ||
| + | |||
| + | <h2>Run 2451</h2> | ||
| + | {| border="0" cellpadding="2" | ||
| + | |-Hit thresholds 180-100-25, window 44-150 | ||
| + | |[[Image:cdc_run2451_amp.png|thumb|x200px|max amp - pedestal]] | ||
| + | |[[Image:cdc_run2451_ped.png|thumb|x200px|pedestal]] | ||
| + | |[[Image:cdc_run2451_t30.png|thumb|x200px|Drift time fit straws with param 6 < 30]] | ||
| + | |[[Image:cdc_run2451_t30z.png|thumb|x200px|zoomed in]] | ||
| + | |} | ||
Revision as of 13:00, 26 March 2015
Fit function:
TF1 *g2 = new TF1("g2","[0] * (1 + [1]*exp(([3]-x)/[2]) + [7]*exp(([3]-x)/[8]) ) / ( (1+exp(([3]-x)/[5])) * (1+exp((x-[4])/[6])) )");
[0] overall height
[1] amplitude of 1st exp contrib to peak
[2] first exp fall-off
[3] t0
[4] tmax
[5] slope up of t0 edge
[6] slope down of tmax edge
[7] amplitude of 2nd exp contrib to peak
[8] second exp fall-off
Fit statistics from first pass over data with ~5k counts per straw
Second pass over data for straws with a successful fit, tmax edge slope < 35 and number of hits > 100
T->Scan("N","par6<35&&!status&&entries>100"); >batch.sh
