SANS2D: Named Aperture & Guide Positions

[kjwoodsISIS]

As a SANS2D scientist, I want IBEX to provide me with a set of named positions for all moveable waveguides & apertures on SANS2D, so that I can easily position all of them in a single operation.

Acceptance Criteria

1. The IBEX GUI provides a control to allow me to select a named position
   • the position selector could be a drop-down box control
   • the position selector appears only on the "user" tab of the IBEX GUI.
2. IBEX allows me to select from the following named positions:
   • 4m_20_8mm
   • 4m_20_12mm
   • 4m_30x20_12mm
   • 6m_20_8mm
   • 6m_16_8mm
   • 6m_GISANS
   • 8m_20_8mm
   • 8m_GISANS
   • 12m_20_8mm
   • 12m_GISANS
3. Motion is disabled/enabled if the PLC inhibit signal is on/off.
4. On selecting a named position,
   1. if motion is enabled, IBEX moves all of the moveable waveguides & apertures to their corresponding positions (defined in a configuration file).
   2. if motion is disabled, IBEX does not move any aperture or waveguide.
      • the position selector should be greyed out when motion is inhibited
      • genie_python should report that it cannot move the relevant axis.
5. I can move all 5 moveable waveguides & apertures to named positions via the IBEX GUI
6. I can move all 5 moveable waveguides & apertures to named positions via genie_python
7. IBEX provides the same level of functionality as the existing LabVIEW VIs

Notes

1. This ticket is a sub-ticket of SANS2D: Control of Aperture & Guides (EPIC) #4568.
2. Each moveable waveguide and each moveable aperture has its own defined positions. When the user selects a named position, all of the moveable waveguides and all of the moveable apertures should move (together) to their respective named positions.
3. The position of each moveable aperture is controlled by a Galil controller & stepper motor.
   • The apertures are heavy - there is a risk that they can fall under their own gravity. Therefore, when movement of the apertures is complete, the motors must remain energised (they require power to hold the load).
4. The position of each moveable waveguide is controlled by a Galil controller. The waveguides are heavy, so they are actually moved by Baldor drives. The Baldor drives are slaved to the Galils. For the avoidance of doubt, from the perspective of IBEX, the motion is controlled solely by Galils; IBEX does not (and should not) control the Baldor drives directly.
5. There are schematic diagrams showing the operation of the SANS2D apertures and waveguides.
6. There are schematic diagrams showing the how the SANS2D apertures and waveguides User OPI and Advanced OPI could look.
7. The LabVIEW VI for the SANS2D apertures and waveguides is located at: C:\LabVIEW Modules\Instruments\SANS2D\Sans2d Waveguide (for more details see the S2d - Waveguide Front Panel.vi in the file Sans2d - Waveguide Motion.llb)
8. The LabVIEW configuration file for the SANS2D apertures and waveguides is located at: C:\LabVIEW Modules\Instruments\SANS2D\S2D Front End Positions.ini.
9. Check the paragraphs labelled S1-S5 and G1-G5 in the Beam_line_descriptors document.

[DominicOram]

In discussion with @John-Holt-Tessella, @KathrynBaker and @Tom-Willemsen it was decided that removing bare motor support from the motionsetpoints should be done as part of this ticket

[John-Holt-Tessella]

Can we check that the decision is recorded correctly in decision log https://github.com/ISISComputingGroup/ibex_developers_manual/wiki/Decision-Log

[DominicOram]

Thanks @John-Holt-Tessella

[DominicOram]

• Main PR is Ticket 4573: SANS2D, Named aperture and guide positions EPICS-motionSetPoints#14.
• Tests Ticket 4573: SANS2D named aperture and guide positions EPICS-IOC_Test_Framework#360
• GUI Ticket 4573: OPI for named aperture and guide positions ibex_gui#1173
• Upgrade scripts Ticket 4573: Added upgrade step for checking motion set points EPICS-upgrade#46
• Docs https://github.com/ISISComputingGroup/ibex_developers_manual/wiki/Motion-Set-points

[DominicOram]

Once merged confirm it hasn't broken anything in #5719