[Tpe] TPE Mini Torus Shielding

[Larry Weinstein]

Dear Dave,

The plate plus two tubes looks good.  Proceed!

- Larry

David Kashy wrote:
> Larry,
> The stainless steel plate has a tube welded to it on each side. On the
> upstream end it is 3-1/8"od x 0.035" wall tube on the down stream end it
> is a 2.25" od tube with a 0.065" wall and then the OD is machined down
> to 2.170" od to slide into the bore in the mini torus. This entire
> assembly is the "mandrel".
>
> If all is good we will proceed.
>
> Thanks
> Dave
>
>
>
> Larry Weinstein wrote:
>    
>> Dear Dave,
>>
>> I don't quite understand the drawing and description.  I assume that
>> the downstream SS tube is the 2.190 ID piece and that the upstream SS
>> tube is the 3.140 ID piece.  Is the item labelled 'SS Mandel' the
>> plate you referred to?
>>
>> We  have the beam halo (that part between 2.19 and 3.14" ID) showering
>> in lead.  The 'SS Mandel' will have the beam start showering in the SS
>> and then finish in the lead.  I do not think that adding an aluminum
>> insert will help.  Our goal was to have the shower start deep in the
>> 'cone shielding' to minimize the number of particles that could be
>> emitted from its opening.
>>
>> I would skip the Aluminum insert, but everything else looks good.
>>
>> David Kashy wrote:
>>      
>>> Hi All,
>>> Attached is a pdf file of my concept for the shield.
>>>
>>> I'll describe it here
>>>
>>> There is are two different stainless steel tubes that are connected
>>> by a plate. The smaller tube goes through the bore of the Mini T. The
>>> larger tube is is nearest the target.
>>> There is a machined piece of lead that surrounds the larger tube and
>>> goes after the stainless plate too. The lead down stream of the cone
>>> between the Mini T coils will be cut to fit by hand. It will be held
>>> in place by 1/8" thick aluminum plates (likely screwed into the lead).
>>> One new idea is to put a ring on the inside of the large Stainless
>>> tube to modify the shower that would have been created by the
>>> stainless steel plate. It could be tungsten or aluminum or lead. the
>>> last piece is an aluminum centering tube at the down stream end of
>>> the mini Torus.
>>>
>>> Again we need to get going on this procurement ASAP so please let me
>>> know when you decide if you like this design and if you can whether
>>> of not we want that insert and if so what material would be best.
>>>
>>> Thanks
>>> Dave
>>>        
>>      
>    

-- 
				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/