[Dsg-halla_ecal] Hall A Beam Current

[Marc Mcmullen]

I wonder if the additional radiation is an issue. The expansion module has lost contact twice now and I am trying to see if  there is something to it concerning radiation or perhaps just a network issue.

I know you are planning to move the shielding bunker and that will move the power supplies and interface chassis. My current plan is install the controls in that shielding. But I am wondering if using the larger bunker (DAq I think) for the controls IO connections may be a better option.

We are getting quotes in for the thermocouple extensions now and I am using 100' as a length. Can someone calculate the run from the detector to the large bunker?  Just for the controls, so it would be the thermocouple extensions (~200 pairs) from the detector, and then some low voltage runs from the controls to the power supplies (control voltage = 16 pairs, current readback = 16 pairs).

I'll keep an eye on the system this weekend and see if the issue persists.

Additionally, I'll find out which switch its on and see if the issue is there.

Marc
________________________________
From: Donald Jones <jonesdc at jlab.org>
Sent: Friday, May 3, 2024 10:32 AM
To: Marc Mcmullen <mcmullen at jlab.org>; Mark Kevin Jones <jones at jlab.org>
Subject: Re: Hall A Beam Current

Hi Marc,
Just going from memory, I think it is IBC1H04CRCUR2. The current is lower but the radiation is higher because now we have a liquid target as opposed to gas before.
-Don

Donald Jones
Hall A/C Staff Scientist
Jefferson Lab
Newport News, VA
________________________________
From: Marc Mcmullen <mcmullen at jlab.org>
Sent: Friday, May 3, 2024 10:30 AM
To: Mark Kevin Jones <jones at jlab.org>
Cc: Donald Jones <jonesdc at jlab.org>
Subject: Hall A Beam Current

Hi Mark and Don,

Do you guys know the PV name for the beam current in Hall A? Also, in general, is the beam current higher now than in November?

Thanks,
Marc
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