[G12] Proton, Electron, Positron, Photon acceptance

[Hicks, Kenneth]

MK,

Why do you have a dip in the middle of each sector for the plot labeled "phi of e+" on page 1?  (Similar for the e- on page 2).  This doesn't look correct.  What happens if you don't do the preliminary cut on leptons?

Ken


-----Original Message-----
From: g12-bounces at jlab.org [mailto:g12-bounces at jlab.org] On Behalf Of Michael C. Kunkel
Sent: Tuesday, July 31, 2012 4:12 PM
To: g12
Subject: [G12] Proton, Electron, Positron, Photon acceptance

Greetings G12,

I seem to having issues with my acceptance and would appreciate comments.
Please refer to the link
http://clasweb.jlab.org/rungroups/g12/wiki/index.php/PEpEmGamPhase_Acceptance#Tuesday_July_31.2C_2012
where I have plots showing acceptance plots. The issue I am having is in the proton and beam acceptance, which does not match the data, however the e+e-gamma acceptance does.

I generate my beam spectrum with a 1/e function and before I send into gsim I do a preliminary cut on the leptons/photons to be kinematic angles of the EC/CC. This cut is what distorts my proton, beam and t spectrum.

Any thoughts on why?

Thanks
MK
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