[Dsg-hallb_prad_ii] PRad-II instrumentation and controls tasks status

[Xiangdong Wei]

Hi Pablo,

According to Donold, Dave finished modifying the Big Bertha and Morgan will switch it on in the morning.

Therefore, all pumps can be tested together.

Thanks,

Xaingdong
________________________________
From: Dsg-hallb_prad_ii <dsg-hallb_prad_ii-bounces at jlab.org> on behalf of Xiangdong Wei <xwei at jlab.org>
Sent: Thursday, April 3, 2025 1:15 PM
To: Pablo Campero Rojas <campero at jlab.org>; Donald Williams <donaldw at jlab.org>; dsg-hallb_prad_ii at jlab.org <dsg-hallb_prad_ii at jlab.org>
Subject: Re: [Dsg-hallb_prad_ii] PRad-II instrumentation and controls tasks status

Hello Pablo,

Thanks again for your quick response, I appreciate it.

It's enough for me to report at PRad-II meeting tomorrow, I'll figuring out other with Don today (we'll meet at 2:30 for that).

Best,

Xiangdong
________________________________
From: Dsg-hallb_prad_ii <dsg-hallb_prad_ii-bounces at jlab.org> on behalf of Pablo Campero Rojas <campero at jlab.org>
Sent: Thursday, April 3, 2025 12:47 PM
To: Donald Williams <donaldw at jlab.org>; dsg-hallb_prad_ii at jlab.org <dsg-hallb_prad_ii at jlab.org>
Subject: Re: [Dsg-hallb_prad_ii] PRad-II instrumentation and controls tasks status

Hello Xiangdong,

Find my answers in blue below.

I will find out the status of modifying power distribution box and let you know. For powering the 3400 and 1500 pumps together, can I "borrow" the outlet for the cold head compressor to power the extra pump? Does the interlock care about that? I'll be working at ESB after 2:30 this afternoon for some cabling issues.
There is one interlock that checks the compressor which is labeled at its inlet connector as "cryo-compressor", I'm not sure if that is the compressor that you're referring to. If this is the same compressor, we could try to find a way to force a clear input by wiring the input connector and proceed with the test.
I cannot answer about using the compressor outlet for the vacuum pump since I do not know electrical specifications required, this might be answered better by Donal Williams or another involved person working on the modifications for the power distribution.




Assuming we have all needed (on order) parts, could you estimate how much time needed (only in ballpark) on your side that I can start run the full target on the local PC? With the ERR schedule for 5/9, I am asked to show some testing results and confirming the operation parameters. It'll great if I can wrap up the 1-week test by 5/1.
Modifications for the LabVIEW program to run the system can be done by 4/18.
Assuming all components are connected, operational, and we can get actual variable readouts from the system we can take the week of 21/4 to test the system.
The interlock box test can be done in a day assuming no problems arise in the process.


Regards,
Pablo


________________________________
From: Xiangdong Wei <xwei at jlab.org>
Sent: Thursday, April 3, 2025 10:28 AM
To: Pablo Campero Rojas <campero at jlab.org>; dsg-hallb_prad_ii at jlab.org <dsg-hallb_prad_ii at jlab.org>
Subject: Re: [Dsg-hallb_prad_ii] PRad-II instrumentation and controls tasks status

HI Pablo,

Thank you very much for your detailed software and control status of the PRad-II target, I really appreciate it.

I will find out the status of modifying power distribution box and let you know. For powering the 3400 and 1500 pumps together, can I "borrow" the outlet for the cold head compressor to power the extra pump? Does the interlock care about that? I'll be working at ESB after 2:30 this afternoon for some cabling issues.

Assuming we have all needed (on order) parts, could you estimate how much time needed (only in ballpark) on your side that I can start run the full target on the local PC? With the ERR schedule for 5/9, I am asked to show some testing results and confirming the operation parameters. It'll great if I can wrap up the 1-week test by 5/1.

Thanks again for your time and help.

Best regards,

Xiangdong
________________________________
From: Dsg-hallb_prad_ii <dsg-hallb_prad_ii-bounces at jlab.org> on behalf of Pablo Campero Rojas <campero at jlab.org>
Sent: Thursday, April 3, 2025 9:51 AM
To: dsg-hallb_prad_ii at jlab.org <dsg-hallb_prad_ii at jlab.org>
Subject: [Dsg-hallb_prad_ii] PRad-II instrumentation and controls tasks status

Hello Xiangdong,

Interlock Box
Brian and I have been able to test and operate the PRad Interlock Box, here some relevant points:

  *
Noticed some inconsistencies with the provided documentation (relay diagram); made notes to show corrections.
  *
For the test, all monitored variables and operational conditions  were forced to stay clear (green LED lights at the front panel of the box).
  *
Operational functions for each condition were verified by measuring voltage at the output relays.
  *
Based on current testing, the interlock box can only disable the pumps; starting pumps requires operating the controller locally.

We need more testing as the vacuum pump controllers model 1500 vs 3400 behave differently—the 1500 can run right away after interlocks are cleared, but for the 3400, the remote mode setting needs to be modified to run them again.
To be able to test 3400 and 1500 vacuum pumps at the same time we have requested to power them on and we have been informed that required electrical components are being ordered and will need to be installed prior to this intent; DSG is waiting on this to proceed with more testing.

LabVIEW Program
I debugged, modified, and tested the existing PRad LabVIEW program to control and monitor target motors; now the LabVIEW program can be used with no issues for each motor.
I'm in the process of modifying the existing LabVIEW program to allow connection of the remaining instrumentation: MFC, pressure controller, vacuum controller, pulse tube, and temperature controllers.
A spreadsheet with the information to properly setup and connect the instrumentation to the assigned serial port for each connected instrument is under development.

Let me know if you have any questions.

Regards,
Pablo






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