Changes to TofD HitPar and Cal2Hit

[mwhiteheadyork]

Currently I perform analysis of s091 on an older version of R3BRoot. I am currently in the process of making it compatible with the latest version. I have had several issues with Tofd:

I can see in R3BTofdHitPar.h the change of paddles from 44->48

This means in my tofdhitpar.root it now assumes 48 paddles instead of 44, so the parameters are assigned incorrectly after plane 1 paddle 44.

I can change the definition back to 44 but is there some way this is meant to be backwards compatible?

The second issue is in TofdCal2Hit.cxx
Previously the calibration was done as a +bx +cx^2. In the cal2hit this has been changed to ax^b + c calling the same parameters. Obviously in the new version the calibration is now wrong. Again I can hard code the change back to the original but is there a way changes like this are/can be made backwards compatible, as these changes were not immediately obvious?

[jose-luis-rs]

Hello @mwhiteheadyork

1. You can generate a new root file with 48 paddles per plane, and then copy your old parameters there. This should solve the problem. Do you know how to do it? or will you need an example?

2)We can introduce an experiment dependence to select the equation for applying the calibration parameters. There is an example here:

R3BRoot/twim/calibration/R3BTwimCal2Hit.cxx

Line 318 in 9e0a9fc

if (fExpId == 91 || fExpId == 118 || fExpId == 444 || fExpId == 467 || fExpId == 509 || fExpId == 522)

This only requires to read the expID from the eventheader.
fExpId = header->GetExpId();