Experimental Physics and
Industrial Control System

"Baker, Keith \(DLSLtd, RAL, LSCI\) via Tech-talk" <tech-talk at aps.anl.gov> · Thu, 29 Jul 2021 07:59:28 +0000

Thanks, Brendan and Andrew.
Looks like we have two more monitors we should look at more closely. I'll point our Health Physics team at these and then come back to you for EPICS drivers if we want to go ahead with one.

My revised summary is:
Health Physics Instruments (HPI) 6016 Area Radiation Monitors (Used in NSLS-II. Drivers available).
Thermo Scientific FHT 6020 (Drivers developed at SLAC and the FHI FEL. Initially reported slow communications but APS report ~0.05s response time).
Ludlum 375 (In use at Aus Synch with Asyn Port driver they developed).
Berthold (No EPICS support mentioned).

Regards,
Keith Baker
Diamond Light Source

-----Original Message-----
From: STARRITT, Andrew <andrews at ansto.gov.au> 
Sent: 29 July 2021 02:48
To: EPICS Tech Talk (tech-talk at aps.anl.gov) <tech-talk at aps.anl.gov>
Cc: Chandler, Brendan <bchandler at anl.gov>; Baker, Keith (DLSLtd,RAL,LSCI) <keith.baker at diamond.ac.uk>
Subject: RE: New Radiation Monitor options [SEC=UNOFFICIAL]

Hi Keith, Brendan,

At the Australian Synchrotron, in the end we went the Ludlum 375.
And we developed an EPICS Asyn Port driver which I am more than happy to share if you, if you select the Ludlum.

Regards

UNOFFICIAL

-----Original Message-----
From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Chandler, Brendan via Tech-talk
Sent: Thursday, 29 July 2021 5:59 AM
To: tech-talk <tech-talk at aps.anl.gov>; Baker, Keith (DLSLtd,RAL,LSCI) <keith.baker at diamond.ac.uk>
Subject: Re: New Radiation Monitor options

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Hi Keith,

At APS we've been evaluating the Thermo FHT6020 and I haven't seen the performance issues mentioned in the Australian Synchrotron thread.  I tried timing 100 requests to our FHT6020 device, alternating beween channels 1 and 2 each time, and it averaged 0.05 seconds per request, doing the entire 100 in about 5 seconds.  Maybe Thermo Fischer has updated the firmware or there was some other issue since then?

I've made a streamdevice based IOC to talk to the FHT6020 and could share with you if you're interested.  Similarly, I have a streamdevice IOC for the Mirion DRM-3000 radiation monitor if interested.

Brendan

________________________________________
From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Baker, Keith (DLSLtd, RAL, LSCI) via Tech-talk <tech-talk at aps.anl.gov>
Sent: Wednesday, July 28, 2021 10:36
To: tech-talk
Subject: New Radiation Monitor options

Hello,
We are looking at the Berthold LB6419 Neutron and Gamma Radiation Monitor as a possible replacement for our old obsolete ones.
I've been told these are in use at PETRA. Can anyone confirm that and has anyone already developed EPICS support for this model or similar?

I see that a similar message about new Radiation Monitors was posted by the Australian Synchrotron in 2018. I think the summary of responses was,

Health Physics Instruments (HPI) 6016 Area Radiation Monitors (Used in NSLS-II. Drivers available) Thermo Scientific FHT 6020 (Drivers developed at SLAC and the FHI FEL, but the device is quite slow apparently. "read from multiple channels can take several seconds". I assume that means several values.) Ludlum 375 (No EPICS support mentioned.) Berthold (No EPICS support mentioned.)

Any other suggestions would be welcome.
Thanks.
Keith Baker
Diamond Light Source

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System