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 Liang 
To: 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
>