[Dsg-hallc_controls] PLC Resets

[Mike Fowler]

Unless the problem is resolved this morning.

Mike


On 11/26/2018 10:39 AM, Brian Eng wrote:
> 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
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