[Tpe] Shielding Option

[Larry Weinstein]

That looks like a great idea.  Let's do it.

David Kashy wrote:
> Hi All,
> I was talking with Alex Vlassov about CLAS12 shielding. He said that he
> found that putting a layer of Aluminum inside a lead shield made the
> shielding better as low energy stuff died in the aluminum...
> What about putting a 2.875" outside diameter x .276" wall aluminum tube
> inside the 5" OD x 1" wall stainless tube?
>
> That would give a 5.9cm ID. Both pieces would be 12 ft long. I think we
> could nearly butt this up against the tungsten 2cm (1.8 or 2.2)
> collimator and reduce the amount of stacked shielding. It could go
> through the Rad phi wall...
>
> Comments?
>
> Thanks
> Dave
>
>
>
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-- 
				Sincerely,
				Larry

-----------------------------------------------------------
Lawrence Weinstein
University Professor
Physics Department
Old Dominion University
Norfolk, VA 23529
757 683 5803
757 683 3038 (fax)
weinstein at odu.edu
http://www.lions.odu.edu/~lweinste/