[Dsg-ltcc] MKS 223 from drift chambers

[Marc McMullen]

Hi Bob, 

We did not remove the MKS-223s from the DC valve panel. We only took the valve controllers and the valves. There may be some in the gas shed cabinet. As far as using them to run the system, the system would need to be altered to accommodate the 223s. Currently the magnahelics send the measurement signal to the DP25 process controllers which have relay channels to control the solenoids. 
So It can be done. But we need to look at what needs to be changed. If you have a diagram of the mechanical changes, we can discuss the overall scheme change. 

Marc McMullen 
Physics Division 
Detector Support Group 
7738 


From: "Bob Miller" <rmiller at jlab.org> 
To: "Marc McMullen" <mcmullen at jlab.org> 
Cc: "Brian Eng" <beng at jlab.org> 
Sent: Tuesday, July 31, 2018 8:21:26 AM 
Subject: MKS 223 from drift chambers 

Hi Marc, 

I am ready to install the MKS 223 on S3 and S5 of the LTCCs. 

These have been removed from level 3 drift chamber tanks, where are they 
now? 

I plan to place these at the bottom of the detectors and use them to 
control the solenoid valves - do you see any issues with this approach? 

Thanks, 

Bob 

-- 
Bob Miller 
Hall B Lead Engineer 
Jefferson Lab 
757 822-9586 
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