Re: [BLAST_TOF] Final coordinates for Neutron Wall

From: John Calarco (jrc@einstein.unh.edu)
Date: Tue May 06 2003 - 13:27:04 EDT


Hi Michael,

  Nominally, things sound OK. A better check than my intuition would
be some MC calculations with the proposed geometry to make sure the
path curvature doesn't cause tracks to be missed.

                                                            John

On Tue, 6 May 2003, Michael Kohl wrote:

> Hi,
>
> in order to build suitable support for the neutron wall and the LADS
> detectors, Jim Kelsey needs to know the exact angles that should be
> accepted when putting the neutron wall in the proposed way parallel to the
> beam axis.
>
> In the present configuration, the neutron wall accepts angles up to about
> 90.5 degrees, with LADS centered at 35 degrees, providing a small overlap
> with the neutron wall. If needed, there would be also space to put LADS at
> about 90 degrees between Tof and NC.
>
> As there was the desire to have some acceptance around 90 degrees for a
> support of high-q ep as well as for low-q (e,e'n), please let us fix this
> more precisely. Jim will try to keep some flexibility in the final
> positions, though this will be rather limited.
>
>
> Best regards,
>
> Michael
>
>
>
>
>

-- 
John R. Calarco
Dept. of Physics
Univ. of New Hampshire
Durham, NH 03824
phone: (603)862-2088
FAX:   (603)862-2998
email: calarco@unh.edu



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