[Tpe] Flipped Torus

[Bennett, Robert P.]

Hi TPE'ers,
  
          I posted plots for the flipped torus runs:

https://clasweb.jlab.org/rungroups/tpe/wiki/index.php/-_-_Events

For the low Q^2 events there is a systematic upward shift in the double ratio when we consider Minus-Minus/Plus-Minus events (compared to Plus-Plus/Plus Minus).
The high epsilon events still show the flip in the ratio as a function of Q^2, but will very low statistics. 
 
Plus-Minus counts are taken from the correct polarity cooks.   In the high epsilon events, the P-M events in both the correct and incorrect torus cooks gave similar yields.  For the low Q^2 runs, there was at least a factor of 2 deficiency in the number of P-M events in the incorrect torus cook.  I am going through the code to make sure I did not do something that forces the negative particle to have the electron mass and the positive to have the proton mass, and causing this deficiency. 

I am also comparing event-by-event lepton-proton pairs which pass in one torus polarity and not the other.  

Regards,
Robert