[Frost] meeting tomorrow

[Franz Klein]

Eugene,
I put corrected plots for the background simulation for g9b on the web
http://www.jlab.org/Hall-B/secure/g9/fklein/gsim_racetrack2.html .
What I found on Monday was that the target volumes were corerctly moved 
downstream BUT the holding coil field was still centered at the nominal 
target position. Thus, when the target was moved 5.0cm or 7.5cm downstream 
(centered at 2.5cm and 5.0cm in the CLAS coord. system), the Bdl was 
smaller and therefore the electromagnetic background rates much lower.
Unfortunately, the corrected plots show that the rate changes only by 
5-10% when the target is moved downstream or the start counter moved 
upstream.
We are back to zero in our search for a solution! My apology!!!

Talk to you later on the FROST meeting,
Franz

On Tue, 22 Sep 2009, Eugene Pasyuk wrote:

> We will have our regular meeting tomorrow, Wednesday September 23 at
> 11:30 EDT.
> http://clasweb.jlab.org/rungroups/g9/wiki/index.php/September_23%2C_2009
> Please, add/update your links.
>
> -Eugene
>
> _______________________________________________
> Frost mailing list
> Frost at jlab.org
> https://mailman.jlab.org/mailman/listinfo/frost
>

===============================================================
                   Franz J. Klein, Associate Professor
                   CUA, Department of Physics
                   Washington, DC 20064
   office: Hannan Hall 206          phone: 202-319-6190
   or: Jefferson Lab,CC F-243       phone: 757-269-6671
---------------------------------------------------------------