Since the last meeting, the attenuation correction was set to one function (the new one).
gpos(x)=gc*(ga+x/gb)/(ga+x)
John and I have been working with run 51382, which turned out to not have been
the best choice, since it's at 4.37GeV/c, and the bottom blocks don't get a good calibration.
So, I moved on to run 51390, which is at 3.74 GeV, filling the focal plane pretty well. John
thinks that his calibration from 51382 should still work.
So, below I have position dependence plots for this one run using 4 calibrations:
1. Mine, using all adcs.
2. John's, using positive adcs only
3. Mine, using negative adcs.
4. Mine, using positive adcs.
John thinks that if we get a really good calibration, we can use it for *ALL* the data, so even
though I don't think any of these calibrations are good enough, I picked the best one, which is #1
(in my opinion), and replayed some runs from 40 degrees: One or 2 at each setting. The position
dependence is there too, but the peak seems to be centered at 1, at least.
I used *ALL ADCS* a cut of abs(delta)<12 and hcer_npe>1 because for some runs, it was filled with pions.
