User name johna
Log entry time 20:36:40 on March 5,2001
Entry number 57787
Followups:
keyword=HRS-left shower counter calibraion.shower_calib.dat has been updated in the espace directory. The calibration were fit to run 2435 (at ~2 GeV central momentum). Figure 1 shows the calorimeter energy vs x and y at the focal plane, and the energy spectrum. (The energy is divided by (1+.06*x), where .06*x is just a crude approximation of dp/p, which is not in the ntuple I used). Figure 2 shows the results of the new calibration for run 2497, which is at ~1.1 GeV. The pedestals are not quite right, and so the very low energy events look strange, and the calibration is not as good when taken to 1 GeV. I will try to improve the pedestals and redo the fit.
FIGURE 1
FIGURE 2
