[Poltarg12] Fwd: FLUKA simulation result for Hall-B polarized target

[kuhn]

Dear targeteers,

I forgot to bring up this calculation done by Jixie at yesterday’s meeting. Probably nothing surprising, but it’s nice we have these numbers. - Sebastian

> Begin forwarded message:
> 
> From: Jixie Zhang <jixie at jlab.org>
> Subject: FLUKA simulation result for Hall-B polarized target
> Date: July 5, 2017 at 4:37:08 PM EDT
> To: James Maxwell <jmaxwell at jlab.org>, "Kuhn, Sebastian E." <skuhn at odu.edu>, Dustin Keller <dustin at jlab.org>, "Day, Donal B. (dbd)" <dbd at eservices.virginia.edu>
> Resent-From: <skuhn at odu.edu>
> 
> Dear all, 
>   Attached is the FLUKA simulation result for the Hall-B
> double cell polarized target. To save your time, I paste the conclusion
>  here.  For details, please read the attachment.
> 
> Summary:
> 1) FLUKA simulation has been performed Hall-B double-cell polarized target assuming 11 GeV beam with 10nA beam current for 90 days. I did not use 5T target field since it will not affect the radiation result in this project.
> 2) The accumulated 1MeV neutron equivalent damage to silicon for area with Z<20cm and R>5cm is below 10^13.  It will be safe to place detectors or electronics in this area.   
> 3) Heat load in target is about 5.5 mili-watt per cm^2, or about 31.2 mili-watt for each target cell.
> 4) Dose rate from activation is negligible everywhere.
> 
> -- 
> With Best Regards,
> Jixie Zhang
> 757-269-7735 
> _______________________________________________

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