[Dsg-halla_gem] [EXTERNAL] Re: Add an ADC to RPi for gas flows?

[Stephen Wood]

Brad:

It should just be a matter of adding new signals to the IOC iocGEMGas running on adaqsc.  The wiki notes for the SBS EPICS have moved from the Hall A wiki to https://sbs.jlab.org/wiki/index.php/SBS_EPICS <https://sbs.jlab.org/wiki/index.php/SBS_EPICS>

Steve

> On Mar 4, 2022, at 2:02 PM, Marc Mcmullen <mcmullen at jlab.org> wrote:
> 
> Brad,
>  
> Excellent!
>  
> Regards,
> Marc McMullen
> Sr. Instrumentation Designer
> Detector Support Group
> (757) 269-7738
>  
> From: Brad Sawatzky <mailto:brads at jlab.org>
> Sent: Friday, March 4, 2022 2:01 PM
> To: Marc Mcmullen <mailto:mcmullen at jlab.org>
> Cc: Jack Segal <mailto:segal at jlab.org>; dsg-halla_gem at jlab.org <mailto:dsg-halla_gem at jlab.org>; Patrizia Rossi <mailto:rossi at jlab.org>
> Subject: [EXTERNAL] Re: [Dsg-halla_gem] Add an ADC to RPi for gas flows?
>  
> Hi Marc,
> 
> You should probably coordinate IOC updates with me (although Steve is
> around to support).
> 
> -- Brad
> 
> On Fri, 04 Mar 2022, Marc Mcmullen wrote:
> 
> > Hi Jack,
> > 
> > I'll be at the lab on Monday to get the ADC. I'll discuss this with our
> > group and come up with a solution on this. Additionally, I'll probably set
> > up a meeting for the GEMs sometime next week so we can talk about analysis
> > of the gas.
> > 
> > This will require an additional PV (I'll probably want a few extras for
> > expansion), I use to coordinate that with Steve. Is he still  handling the
> > IOC updates?
> > 
> > Regards,
> > Marc McMullen
> > Sr. Instrumentation Designer
> > Detector Support Group
> > (757) 269-7738
> 
> > From: Jack Segal
> > Sent: Friday, March 4, 2022 1:38 PM
> > To: Marc Mcmullen
> > Subject: Add an ADC to RPi for gas flows?
> > 
> > Marc,
> >    We are adding a Binary Gas Analyzer, see the attached picture. It has an
> > analog output.
> > Can we try to add an ADC to the I2C string to read this out with the mass
> > flow sensors?
> > I have some DIN rail mountable 16 bit ADCs.
> >    This allows us to monitor the gas mixture ratio.
> > 
> -- 
> Brad Sawatzky (he/him), PhD <brads at jlab.org> -<>- Jefferson Lab/ Hall C/C111
> Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
> The most exciting phrase to hear in science, the one that heralds new
>   discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov
>  
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