Mercury IPS magnet supply: using full capability to control

[GRyall]

Issue Description

As an instrument scientists and as a member of the sample environment group I would like to be able to use the full capabilities of the new Mercury IPS magnet supplies.

How & Where?

AJ/DB in the cryogenics team of the Sample environment group are the best contact. Came via regular interaction between CL & GR.

Additional Information

We already have a controller for an older generation. The newer models are capable of running in an emulator mode, which works with our old controller. (one is currently doing this). However all of the old ones are now being replaced and the emulator mode does not allow for the reading of cryogen levels, which is a requirement of cryo team. It is likely other of the new functionality may be useful, this should be discussed with the SE team. The logic used for the old controller should be sufficient for the new. Further detail should be sought from AJ.

Testing should be possible with the existing one, though it is not currently configured to read cryogen levels. OI will deliver four new ones in ~February at which point more comprehensive testing may be possible, as they won't all be used on magnets straight away.

Acceptance Criteria

• New generation of Mercury IPS Magnet power supply can be controlled out of emulation mode
• cryogen levels can be read
• Has been tested against actual hardware

How to Review

_{Before making a PR...}

• Provide verbose instructions for the reviewer to test that your changes work and fix the issue
• Describe if/how you have implemented testing for this issue
• Provide screenshots of the feature to help the reviewer if relevant

_{If not applicable, write "Not applicable"}

...

_{To the reviewer: Make sure to update submodules!}

Planning

10/01/25 - 00:57:05
Should be within existing IOC, not new one

[GRyall]

Delivery of new hardware has been delayed (into April - so still required work!). Testing will need to be against one of the existing Mercury IPS systems taken out of its emulator mode. CL should be contacted to arrange access.