[dsg-hallb_rich] RICH S1 update: gas system and EPICS back, but no T or H due to internal power supply failure

[Tyler Lemon]

Hello everyone,

A bit of good news but then more bad. Sorry for the long email, the main points are in bold.

Bit of Good:
The RICH S1 EPICS, air flows, air pressure, and nitrogen flow are back working. They should be viewable in EPICS.

More Bad:
The sbRIO controller that reads the digital temperature and humidity sensors has an internal 3.3 V power supply failure.
This status can be seen in the LabVIEW expert screen or with the LabVIEW network shared variable "\\rich2sbrio\network-shared-variables\sbrio-3v3-okay".
The temperature and humidity sensors cannot be read with this failure, so all temperatures are -45 C and all humidity readings are 0%.
The solution is a swapping the hardware controller.

Things were working around 2pm, so I think the 3.3V power supply failure on the controller is more bad luck and an unfortunate coincidence.

It looks like next Wednesday June 11 is a maintenance day. I'll be ready then to swap the sbRIO.
If something happens and the hall is open Monday or Tuesday, I'll take that opportunity to swap things sooner.

Lastly, I can provide more details if needed.
Email is preferred, but my cell is 757-768-5316 just in case.
If I'm not able to answer the phone in time, please leave a message or text me and I'll call back.

I don't think there is much else I can do today, especially since the hall is closed for beam, so I will be headed home shortly since I've been here since 8AM.

-Tyler


PS:
If anyone else in DSG wants to give it a try, the latest version of the program is at the path below and uses LabVIEW 2020 (I've been using the PC dsgcontrols2 but the PC dsgcontrols1 also has it).
O:\DSG_Slow_Controls\RICH-Hardware-Interlock-System\2025-06-06_RICH_S1

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