[Dsg-hallc_controls] PLC Resets

[Brian Eng]

Just talked with Mike and we won't be able to test the HMS Dipole today due to problem with the lead flow controllers.

----- Original Message -----
> From: "Brian Eng" <beng at jlab.org>
> To: "Steve Lassiter" <lassiter at jlab.org>
> Cc: "dsg-hallc controls" <dsg-hallc_controls at jlab.org>
> Sent: Thursday, November 15, 2018 10:59:47 AM
> Subject: Re: [Dsg-hallc_controls] PLC Resets

> Since HX & Q1 were replaced on 7/13 it is a good sign they haven't had any
> problems since then.
> 
> Interesting that there were so many problems in April.
> 
> Work plan seems reasonable for testing the NMR. I did notice that the automatic
> setting of RF pulse parameters didn't work the last time the magnet was at
> higher field. So far I've only been able to get a lock by manually searching
> for the field. We'll know more when we can ramp the magnet ourselves.
> 
> (approx) fields I'd like to try:
> 1.1 (near min value for probe)
> 1.2 (min field I've seen it get a lock)
> 1.6 (highest I've seen it automatically get a lock)
> 1.8 (highest I've manually gotten a lock)
> Max field
> Any missing fields/gaps on existing probes