[Fwd: Re: GlueX UPV]

[Tim Whitlatch <whitey@jlab.org>]

-------- Original Message --------

Subject:	Re: GlueX UPV
Date:	Wed, 11 Apr 2007 10:33:29 -0400
From:	Tim Whitlatch <whitey@jlab.org>
To:	Prof. Paul M Eugenio <eugenio@fsu.edu>
CC:	Elton Smith <elton@jlab.org>
References:	<200704051117.03608.eugenio@fsu.edu>

Hi Paul,

The previous 8cm diameter should have been 8 inches. A good keep out 
zone is probably 21cm diameter. A preliminary drawing of the Hall D 
Start Counter is attached.

Cheers,

       Tim

Prof. Paul M Eugenio wrote:
> Dear Tim,
>
> Could you send me a few drawings for the target/start counter dimensions.   We 
> are designing the UPV container.  In particular, the beam hole region.  The 
> UPV has a 25.5cm x 25.5cm region along the beam which has no active detector 
> component, but this region will actually be enclosed in the UPV container 
> with an aluminum tube  forming the outer wall.  That is, we want to stick a 
> tube in the  25.5cm x 25.5cm region and have it connected to aluminum face 
> plates.  The diameter of this tube will be ~22cm but we need to make sure 
> that it is large enough to insert the target and the start counter.  
>
>
> Thanks,
>
> Paul
>
>
>   

START_COUNTER.pdf