[Dsg-hallb_magnets] [New Logentry] Follow-up Re: Solenoid fast dump at 2416 A

[Brian Eng]

Did we ever find out what this PV actually means?

After going through the 21 fast dumps that Pablo put in his summary table either we have an explanation for the dump (QDs, Cryo, etc) or for _all_ the unknown ones there's spikes on this PV, basically if it goes above 5 the Solenoid is going to dump. Scrolling through the archives I've only found a few cases where the magnet is on (at low current < 500 A) and there's spikes above 5 (but < 3 min) where it didn't dump. All the other spikes in that PV the Solenoid was off.

I think finding out what exactly this PV is will help narrow down what in the MPS is causing the dump. Flow? Conductivity? Something else? Also why isn't the Torus MPS effected in the same way.

----- Original Message -----
> From: sandoval at jlab.org
> To: jonesc at jlab.org, "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>
> Sent: Friday, November 2, 2018 10:30:06 AM
> Subject: [Dsg-hallb_magnets] [New Logentry] Follow-up Re: Solenoid fast dump	at 2416 A

> Follow-up Re: Solenoid fast dump at 2416 A
> 
> 
>    * Edit
>    * Delete
> 
> 
> Lognumber 3619729 . Submitted by sandoval on Fri, 11/02/2018 - 10:27 . Logbooks:
> 	HBLOG HBSOLENOID
> References: 	3619588 - Solenoid fast dump at 2416 A
> 
> 
> Seems to be coorelation of Hall B solenoid fast dumps with lcw:92_Flow_Makeup
> 
> Not sure what this PV actually means for hall B