Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	RE: How is EPICS used at your facility?
From:	GAGET Alexis via Tech-talk <tech-talk at aps.anl.gov>
To:	"Leblanc, Gregory" <leblanc at ohio.edu>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date:	Wed, 15 Mar 2023 07:29:55 +0000

Hello Greg,

To get designs of facility I suggest you to investigate on the meeting EPICS we had:

https://epics.anl.gov/meetings.php (previous and future meeting)

and from the last one for example, first presentation I've found was the status of SNS:

https://indico.cern.ch/event/1173788/contributions/5008258/attachments/2509639/4313164/SNS%20Controls%20Status%20Report%202022.pdf

Also you can found in the conference called ICALEPCS (https://www.icalepcs.org/conferences.html) more official and more generalist

So you can probably dig in it.

To answer some question, here at CEA we are using the archiver appliance, and are very happy with it, we usually don't archive waveform but only information about it (averaging, max, min, pulse width etc...). and we were using CSS for visialization but now we are using Phoebus.

Regarding the IOC, one IOC per equipment and one IOC per process. Each function as more independant as possible.

Cheers

Alexis Gaget

CEA IRFU

De : Tech-talk <tech-talk-bounces at aps.anl.gov> de la part de Leblanc, Gregory via Tech-talk <tech-talk at aps.anl.gov>
Envoyé : mardi 14 mars 2023 22:10:51
À : tech-talk at aps.anl.gov
Objet : How is EPICS used at your facility?

How do you use EPICS at your facility? We aren't using it yet and I am trying to make some design decisions before I get very far down the implementation road. The thread last week about SCAN issues and the archiver appliance brought some of these to mind.

How many data points do you collect?
How fast do you collect data?
Do you archive every datapoint you collect?
Do you archive data slower than you collect it?
What are you using to archive data (EPICS Archiver Appliance, CSS, Phoebus, other?)?
How many IOCs do you have, and how do you decide when you need a new IOC vs extending an existing IOC?
What do you use for visualization (CSS, Phoebus, custom solution (based on qtepics?), something else)?

I'm sure I could come up with a dozen more questions about how EPICS is implemented, but maybe another time.
Greg

P.S. If there's interest in collecting any of this data I could put together a survey and make the data available (Ohio has some decent survey data collection tools).

--
Gregory Leblanc
Accelerator Engineer
Edwards Accelerator Lab - Ohio University
123 University Terrace
Athens, OH 45701 USA
leblanc at ohio.edu
M: (401) 52-OUAL1 or (401) 526-8251

References:: How is EPICS used at your facility? Leblanc, Gregory via Tech-talk

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ANJ, 15 Mar 2023

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System