[Eg6_analysis] tpc angle correction

[Nathan Baltzell]

Hi All,

Here is the TPC angle correction that was mentioned in yesterday’s meeting.

The study from pass1 is here:
https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/User:RTPC_Vertex_and_Angle_(Aug_7,_2013)
https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/RTPC_Vertex_and_Angle_2

Or just the c-code to do the correction:
https://userweb.jlab.org/~baltzell/EG6/code/SimpleRtpcThetaCorr.C

I’m revisiting it for pass2, but from what we saw during the previous year’s
calibrations, I suspect it is not going to change greatly.

-Nathan