[Dsg-hallc_controls] New NMR unit

Steve Lassiter lassiter at jlab.org
Fri Jul 27 11:16:50 EDT 2018


Hi, 

Josh Myer just dropped by and they do not have a magnet assembled that can produce >1T fields. 
Lets shut for installing in the SHMS Dipole and ramping up the magnet next week. 

Thanks 
Steven 

----- 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>, "Eric Sun" <qsun at jlab.org> 
Sent: Friday, July 27, 2018 11:15:02 AM 
Subject: Re: [Dsg-hallc_controls] New NMR unit 

I've yet to hear back from the magnet measurement group on testing with a magnet higher than 1T. 

So I can't test much since the probe never gets a lock. 

If you want to install the probe and NMR in Hall C we can test the tags/communication but without actually doing any actions, basically just read the field. 

Since we know we can power cycle the unit remotely I think there is at least a fall back if communication proves unreliable, but I've maintained a connection/communication for at least a week continuously without any problems. 

----- Original Message ----- 
> From: "Steve Lassiter" <lassiter at jlab.org> 
> To: "dsg-hallc controls" <dsg-hallc_controls at jlab.org>, "Eric Sun" <qsun at jlab.org> 
> Sent: Friday, July 27, 2018 10:48:14 AM 
> Subject: [Dsg-hallc_controls] New NMR unit 

> Hello all, 
> 
> What is the latest updates on the new NMR units? 
> 1. Do is it now work with the PLC reliable? 
> 2. How soon can it be tested within the SHMS Dipole magnet? (includes PLC 
> programming and installation) 
> 
> 3. Is there a need to buy a unit for the HMS or will the older, existing NMR 
> units work for the HMS Dipole? 
> 
> I need to write and submit a req fairly soon for another unit, multipexer and 
> probes if the newer model NMR is needed fpr the HMS Dipole. 
> 
> Thanks 
> Steven 

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