LARMOR: IOC & OPI for 3D Magnet System

[kjwoodsISIS]

As a scientist, I would like an IOC & OPI for the 3D Magnet system, so that I can use them to control the magnet and its supporting devices in my experiments.

Acceptance Criteria

1. I can view and change the PVs which define the state of the 3D Magnet system (e.g.via scripts).
2. I can view and change the state of the 3D Magnet system via the IBEX GUI.

Notes

1. The 3D Magnet system comprises:
   1. temperature controllers,
   2. 3 magnet power supplies,
   3. helium level.
   4. a rotation stage,
   5. a needle valve control,
2. There is a manufacturer supplied VI. A copy of the manufacturer's VI is located on the C: drive on LARMOR, in C:\LabVIEW Modules\Drivers\Scientific Instruments\3D Magnet\Source Code\Vector-control-v16isis.vi
3. With such a complex system, and given that there is a manufacturer supplied VI, a lvDCOM solution is the most appropriate approach.
4. The rotation stage can be controlled via the normal EPICS motor record (i.e. does not need to be controlled via LabVIEW).
5. Need to consult with Rob Dalgliesh to see what is required in terms of a UI and what PVs should be available for scripting.

[kjwoodsISIS]

Original e-mails requesting support for 3D magnet:

From: Howells, Gareth (STFC,RAL,ISIS)
Sent: 12 July 2016 14:09
To: Woods, Kevin (Tessella,RAL,ISIS)
Cc: Akeroyd, Freddie (STFC,RAL,ISIS)
Subject: FW: 3D cryomagnet

Hi Kevin,

Just to let you know that I believe Rob would like to use a 3D magnet system on LARMOR for the September cycle.

The system uses temperature controllers, 3 magnet power supplies, rotation stage, needle valve control, helium level. There is a vi that is supplied from the manufacturer to control the equipment. It sounds to me as though LVDCOM could be appropriate.

Below is his email. I will confirm the requirement as definite as soon as I can.

Regards,

Gareth

From: Dalgliesh, Robert (STFC,RAL,ISIS)
Sent: 12 July 2016 09:32
To: Bunce, Dave (STFC,RAL,ISIS); Down, Richard (STFC,RAL,ISIS)
Cc: Howells, Gareth (STFC,RAL,ISIS); Haynes, Richard (STFC,RAL,ISIS); Church, Andy (STFC,RAL,ISIS)
Subject: 3D cryomagnet

Hi Dave, Richard,
I would like to schedule the 3D cryomagnet on Larmor at the start of the September cycle for a week long experiment.
We will need the rotating centre stick to be working.

Will this be a problem?

Thanks

Rob

[kjwoodsISIS]

From: Howells, Gareth (STFC,RAL,ISIS)
Sent: 11 August 2016 17:23
To: Woods, Kevin (Tessella,RAL,ISIS); Akeroyd, Freddie (STFC,RAL,ISIS)
Cc: Dalgliesh, Robert (STFC,RAL,ISIS)
Subject: LARMOR : 3d Magnet for second week of coming cycle

Dear All,

Rob Dalgliesh is intending to scheduling a large 3D magnet on LARMOR for the second week of the coming cycle. This system is from a manufacturer and had LabVIEW vis supplied. Currently the system has NO computer associated with it but DOES HAVE a moxa dedicated to it. We run the LabVIEW control software on the ndx control machine after adding the MOXA configuration to the control machine. There is a needle valve that is presently driven from a Galil analog voltage output line. This will have to be addressed to work on LARMOR with a minor modification to the LabVIEW code (I believe).

There is also a rotation stage that is currently intended to be Galil. I think this part should be fine as Rob can use one of his spare Galil axes.

The LabVIEW control software can be found in :
C:\LabVIEW Modules\Drivers\Scientific Instruments\3D Magnet\Source Code\Vector-control-v16isis.vi

Kind regards,

Gareth

[kjwoodsISIS]

Discussed by Gareth, Freddie John & Kevin (on Friday, 12th August 2016).

• the 3D magnet has mainly been used on POLREF up until now.
• currently controlled via LabVIEW running on the NDXxxxxxx PC (at some point in the future it might be better to control it from a dedicated PC).
• uses a dedicated Moxa, because the whole 3D magnet system includesd several devices which all uses RS-232 ports:
  • 2 x temperature controllers
  • 3 x power supplies (for the 3 orthogonal superconducting coils)
  • helium level system
• the needle valve is controlled separately from the other devices (currently takes an analog signal from a Galil controller, which is used to drive the motor that drives the needle valve itself).
• the rotation stage is also controlled separately via a Galil controller.
• need to check if Rob has a spare Galil controller (can't have LabVIEW and EPICS both controlling the same Galil).
• we agreed the lvDCOM was the best way to add support into IBEX

[kjwoodsISIS]

Gareth reports that LARMOR may wish to use a Lakeshore 336 as part of their setup.