[Halld-tagger] request for patch panel from collimator cave

[Eugene Chudakov]

Hi,

I suggest that JLab procures the electronics and mounts the SiPMs.
JLab will test the SiPMs and the boards for the SiPMs, before
mounting.  The latter test will be very basic, providing the power and
electrical input signals and checking the output signals. The
populated boards (and the other boards) will be sent to UConn for
testing.

Regards,
Eugene

------------------------------------------------------
Eugene Chudakov
phone (757) 269 6959  fax (757) 269 6331
Thomas Jefferson National Accelerator Facility
12000 Jefferson Ave,
Postal Suite 16,
Newport News, VA 23606 USA

On Tue, 6 Nov 2012, Richard Jones wrote:

> Hi Fernando,
>
> I don't know where this request should be routed, so I am sending it directly 
> to you.  I would like to make sure that we have coaxial connections from the 
> upstream wall of the collimator cave to the counting house.  Here are some 
> signals that we would like to be able to read directly, and minimize how much 
> DAq electronics we need to place in a hot radiation area.
>
> 1. output signals from the active collimator: 8
> 2. cave background rate monitor scintillators: 2-4
>
> A panel of 16 or 24 would be sufficient, I believe.  There are also controls 
> for the collimator translation stage and associated limit switches.  Further 
> downstream there is the converter target ladder, which may be inside the cave 
> or outside, depending on the ability to shield the stray magnetic field from 
> the pair spectrometer.  I just want to make sure we have cables and cable 
> trays for these interconnects, as it may be difficult to add them later.
>
> -Richard Jones
>
>