Email from Yongguang:
From yl0094a@jlab.org Fri Sep 17 14:12:09 2004 Date: Fri, 17 Sep 2004 12:47:59 -0400 From: Yongguang LiangTo: Jim Birchall Cc: Juliette Mammei , Roger Carlini , Klaus Grimm , Mark Pitt , Neven Simicevic , Greg Smith , Tony Forest , Norman Morgan , Mike Finn , Shelley Page , David Armstrong , Dave Mack , Allena Opper , Richard Jones Subject: Re: My simulation results for Inelastics with the '10-8-22 Boston collimator' Hi Jim, I try to include the 1000 MeV cut, and a cut from 295-310 cm across the width of the bar, the mean Q^2 is droped to 0.02442. If only adding 1000 MeV cut, the Mean Q^2 I got is 0.02634, a little bit larger than that without the energy cut. By the way, when using Richard Jones's updated gukine.F (no internal correction and new event generator), the event rate that I got is droped to 581 MHz from around 630MHz before. Best regards, Yongguang Jim Birchall wrote: > Yes, Richard Jones's updated gukine.F may cause part of the > difference. The value of Q^2 I had for the 10-8-22 Boston collimator > was for electrons above 1000 MeV, and no other cut, as we'd decided a > few meetings ago. If I put a cut from 295 to 310 cm across the width > of the bar (mini-torus off) the average weighted Q^2 drops from > 0.03163 to 0.02799 and the maximum Q^2 drops from about 0.082 to about > 0.068. The energy cut makes little difference. > > Jim >