[Dsg-hallb_magnets] Solenoid MPS LCW information

[Amrit Yegneswaran]

thanks for the e-mail pablo.
"Commando" freudian slip perhaps!
yes, i agree dsg is the commando group of the physics division!
i reckon we could consider ourselves to be the delta force!
De Oppresso Liber

________________________________
From: Pablo Campero Rojas
Sent: Tuesday, February 26, 2019 9:20 AM
To: Amrit Yegneswaran; dsg-hallb magnets
Subject: Re: Solenoid MPS LCW information


Hello Amrit,


The Solenoid MPS supply flow has not been changed (Should be ~ 150 l/min ).

The 3.3 bar (48 psi) is the set threshold value that was changed only in the PLC code. If LCW dP (sup-ret) is lower than this threshold, the PLC logic sends a commando to ramp down the Solenoid MPS to 0 A.


With regards to the PLC controllers, Ruben is already aware of the current situation.


Best Regards,

Pablo

________________________________
From: Dsg-hallb_magnets <dsg-hallb_magnets-bounces at jlab.org> on behalf of Amrit Yegneswaran <yeg at jlab.org>
Sent: Monday, February 25, 2019 7:22:25 PM
To: dsg-hallb magnets
Subject: [Dsg-hallb_magnets] Fw: Solenoid MPS LCW information

pablo,
thanks for re-sending me the documents.
for the solenoid, what is the flow rate,  now that delta P is set to 3.3 bars?
i'm confident it complies with danfysik recommended flow rate.
hopefully my confidence isn't misplaced like my spectacles!

expansion chamber is a cool idea
if the lead to the chamber is sized appropriately we could liquefy the nitrogen gas a la joule-thompson  and return it. (really!)

tyler, pablo, brian,
from the info you all gave me this afternoon, i think the controller is dying
but then again what/who  isn't?
i recommend that you all recommend that we buy a new controller, since there is no spare.
Goodnight & Godbless





________________________________
From: Pablo Campero Rojas
Sent: Monday, February 25, 2019 5:26 PM
To: Amrit Yegneswaran
Subject: Solenoid MPS LCW information


Hello Amrit,

Please attached find the documents with the related information for the Solenoid MPS LCW flows measurements.


Best Regards,
Pablo


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