Difference between revisions of "CDC run 2551 drift time fits"
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| + | {| border="0" cellpadding="2" | ||
| + | |[[Image:cdc_run2551_straw_496.png|thumb|x200px|Drift time fit for straw 496]] | ||
| + | |[[Image:cdc_run2551_straw_500.png|thumb|x200px|Drift time fit for straw 500]] | ||
| + | |[[Image:cdc_fitshapes.png|thumb|x200px|Drift time fit function]] | ||
| + | |} | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
Revision as of 13:40, 23 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
