[g13] Momentum and Beam Energy Corrections for Pass 2 of g13a & g13b

[Paul Mattione]

The momentum and beam energy corrections have been determined for the pass 2 cooking of both g13a and g13b.  The g13a momentum corrections stayed the same as they were for pass 1, and the g13b momentum corrections were only slightly different than the ones for g13a.  The differences were insignificant, except an average additional correction of ~5 MeV was needed for protons and pions at low-phi in Sector 5.   

g13b Momentum Corrections Plots:
http://clasweb.jlab.org/rungroups/g13/wiki_secure/index.php/MomentumCorrections#Momentum_Corrections_For_g13b_Pass_2

The beam energy corrections for g13a reduced significantly with the new tagger calibration.  The g13b beam energy corrections were not measured previously, and typically range between 0.997 and 1.004 (multipliers to the energy of each photon).  

Beam Energy Corrections Plots:
http://clasweb.jlab.org/rungroups/g13/wiki_secure/index.php/MomentumCorrections#NEW:_Beam_Energy_Corrections_For_Pass_2_Cooking

Instructions on how to get/use the corrections may be found at (updated for off-site usage!):
http://clasweb.jlab.org/rungroups/g13/wiki_secure/index.php/MomentumCorrections#Applying_Corrections

No beam energy corrections were determined for the LH2 data in either g13a or g13b.  

Please let me know if you have any questions or problems.  

 - Paul