Email from Yongguang:

From yl0094a@jlab.org Thu Oct  7 13:43:14 2004
Date: Thu, 07 Oct 2004 13:39:30 -0400
From: Yongguang Liang 
To: carlini@jlab.org
Cc: Neven Simicevic , Dave Mack ,
     Mark Pitt , Jim Birchall ,
     Juliette Mammei , Klaus Grimm ,
     Greg Smith , Allena Opper ,
     Tony Forest , Norman Morgan ,
     Mike Finn , David Armstrong ,
     Shelley Page ,
     Richard Jones 
Subject: Inelastic/elastic ratio for Neven's unsculpted collimator
    with/without shielding

Hi folks,

I check the inelastic/elastic ratio for Neven's unculpted collimator by adding a shielding wall 
before the Cerenkov bar. My simulation results shows that adding a shielding wall may not reduce 
the inelastic electron background. I check two processes. One is e + p -> e + p (elastic); another 
is e + p -> e + n + pi+ (inelastic). 

Also, I found I got a smaller mean Q^2 (0.02375) than Juliette 09/30 results (0.028), even if we 
are using the same euclid and bash file. It is strange.

Here is a link to my results,

http://www.jlab.org/~yl0094a/Qweak_SCIN/status_report/status_10072004.html


Best regards,

Yongguang
 



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