Re: question about background rates in BCAL

[Alex Dzierba <dzierba@indiana.edu>]

Thanks Elke -
The rates are small but for consistency we want to at least
address is in the document

Cheers
Alex

At 9:58 AM -0500 2/10/08, Elke-Caroline Aschenauer wrote:
>On Sun, 10 Feb 2008, Alex Dzierba wrote:
>
>Dear Alex,
>
>
>>  Dear All
>>
>>  I want to include some discussion of e.m. background rates for BCAL.
>>  Can someone point me to where I can find the most current
>>  calculations?   I need figure(s).
>
>just a small remarks as the BCal sits radially so far outside, the rates
>from EM must be very low. The rates in all the detectors have dropped
>really a lot after the material in the FDC has been so reduced.
>So I'm not sure this is really very important.
>Examples of the rates befor and after is in
>http://www.jlab.org/Hall-D/reviews/FDC_Mini_Review_Feb08/Final%20Talks/DCReview_Simulation.pdf
>
>cheers elke
>
>
>
>>
>>  I decided to include the discussion of the SiPM dark rate affect
>>  on threshold energy in the BCAL section.  I am working on that now
>>  along with going over the discussion of the photoelectron yield.
>>
>>  Alex
>>  --
>>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>  Alex R. Dzierba
>>  Chancellor's Professor of Physics (Emeritus)
>>  Department of Physics / Indiana U / Bloomington IN 47405 / 812-855-9421
>>  JLab Visiting Fellow
>>  Jefferson Lab / 12000 Jefferson Ave / Newport News, VA 23606 / 757-269-7577
>>  Home Phone: 812-825-4063  Cell:  812-327-1881  Fax: 866-541-1263
>>  http://www.dzre.com/alex
>>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Alex R. Dzierba
Chancellor's Professor of Physics (Emeritus)
Department of Physics / Indiana U / Bloomington IN 47405 / 812-855-9421
JLab Visiting Fellow
Jefferson Lab / 12000 Jefferson Ave / Newport News, VA 23606 / 757-269-7577
Home Phone: 812-825-4063  Cell:  812-327-1881  Fax: 866-541-1263
http://www.dzre.com/alex
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~