Difference between revisions of "BCal Beam Test Plots, January 3, 2007"

Revision as of 16:14, 3 January 2007

From suggestions from Alex and others I wrote a piece of code that plots z finds sigma and then adjusts the PMT gain correction factors until the sigma of the gaussian fit is at it's minimum. Z is defined as

You can find the peakfit.C code here.

The code goes through and adjusts each parameter by an amount epsilon until sigma is minimal. Of course the ADC conversion factor (E_beam/E_cal) has to be calculated each time too. Doing this shows a good improvement in the "floor term" and the energy dependent is still approximately 5%.