[Primex] MC results for the PrimEx-II beam line

[David Kashy]

Hi Ashot,
The report looks good. I wonder why you say 0.8" is the smallest 
collimator you can have.
Our normal clean up collimator is 14mm (0.55"). A 2 inch thick lead 
block is 9RL and can be drilled much smaller than 0.8"
We can get some free space by moving that collimator to just upstream of 
the vacuum box (target).
We will start some layouts and show you soon.

Dave



Ashot Gasparian wrote:
>
>   Dear Colleagues,
>
>   The fist stage of the MC simulations for the PrimEx-II beam line
>   optimization is accomplished. The results are summarized in the
>   attached *.ppt presenntation. It is also copied in my public
>   directory:
>
>      ~gasparan/public_html/PrimEx-II_beamline_MC.ppt
>
>   Pawel is also in process of comming up with his simulations soon.
>   That would be better for the comparison before making the final
>   decision.
>
>   Please take a look to this presentation, it is tried to include
>  as much information as it is possible before making a summary.
>
>  Send me your comments, suggestions or questions.
>  The plan is to discuss it in Tuesday's 1:3 pm PrimEx group meeting
>  and make a decision for the PrimEx-II beam line.
>
>  Thank you,
>  Ashot
>
>
> .............................................................
> Ashot Gasparian                    Phone:(336)285-2112 (NC A&T)
> Professor of Physics
> Physics Department                       (757)-269-7914 JLab
> NC A&T State University              Fax:(757)-269-6273 JLab
> Greensboro, NC 27411               email: gasparan at jlab.org
> .............................................................