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Dear Brad,</div>
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I ran your request by Patrizia.</div>
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Patrizia concurred with my suggestion that Aaron Brown lead this effort.</div>
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We are happy that you requested DSG and are confident that Aaron's effort will be exemplary.<br>
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Sincerely</div>
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Amrit<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Dsg-hallc_controls <dsg-hallc_controls-bounces@jlab.org> on behalf of Brad Sawatzky <brads@jlab.org><br>
<b>Sent:</b> Thursday, February 6, 2020 11:36 AM<br>
<b>To:</b> dsg-hallc controls <dsg-hallc_controls@jlab.org><br>
<b>Subject:</b> [Dsg-hallc_controls] NPS control screen request (based on Comcal GUI)</font>
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<div class="PlainText">Hi folks,<br>
<br>
Just following up on this morning's meeting, I'd like to ask for your<br>
support to develop a controls/monitoring GUI along the lines of the<br>
Comcal screen being used in Hall D. (Slide attached with a few<br>
snapshots. I have not worked with this GUI myself though.)<br>
<br>
In addition to the HV screen, we'll have environmental readbacks<br>
as well. I'm afraid I do not yet have all of the hardware details for<br>
the environmental systems, but I will enforce EPICS as the API for all<br>
of those components.<br>
<br>
<br>
The GUI can follow the Comcal layout and reuse as much of their screens<br>
and layout as is practical. I'll try to summarize basic requirements<br>
for NPS below:<br>
<br>
HV control<br>
- 1080 detectors in a grid of 30(wide) x 36(high)<br>
- control: set(V, I_trip), readback(V, I)<br>
- 'all save' and restore functions<br>
- Graphical screens (just a suggestion)<br>
- main 'overview' tab that shows a 30x36 grid of small boxes only,<br>
each box filled with a color and an index/reference identifier<br>
- Colors show basic status only:<br>
Green(V_set = V_read), Red(off), Yellow(trip/mismatch)<br>
- Overlay a 3x3 array of 'clickable' areas on this overview screen,<br>
each covering a 10x12 subset of crystals. Clicking on one of the<br>
9 sub regions would pop up a copy of the existing 'detailed' Comcal<br>
HV screen as shown for per-PMT controls. (The Comcal screen is<br>
set up for a 12x12 array, so should be easy to adapt to a 10x12<br>
grid.)<br>
<br>
Environmental readbacks (readback only; data source is EPICS)<br>
- Internal air temps, humidity<br>
- Chiller readback (flow, temps, fans)<br>
- 126 temp readbacks distributed across the detector array<br>
- I would 'clone' the HV screen layout and make another<br>
'grid-like' screen/tab just for these detector temp sensors.<br>
Notes:<br>
- Unlike the ComCal system, the Collaboration is just planning to<br>
monitor environmental and temp readbacks at this point. Changing<br>
setpoints (for example) would be local/ front-panel only.<br>
<br>
-- Brad<br>
<br>
-- <br>
Brad , PhD <brads@jlab.org> -<>- Jefferson Lab / Hall C / C111<br>
Ph: 757-269-5947 -<>- Fax: 757-269-5235 -<>- Pager: brads-page@jlab.org<br>
The most exciting phrase to hear in science, the one that heralds new<br>
discoveries, is not "Eureka!" but "That's funny..." -- Isaac Asimov<br>
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