SANS: Common Sample Changer OPI across all SANS Instruments

[KathrynBaker]

As an instrument scientist on the SANS instruments (LOQ, SANS2D, LARMOR, ZOOM) I would like my sample changer OPI to have a common look and feel so that I can have confidence in the behaviour of buttons and functions achieving the same result (e.g. home)

Acceptance Criteria

1. There is a single OPI that looks and behaves in the same basic fashion for moving between samples and homing
2. This OPI will be updated in the release cycle

Notes

1. There are some variations, e.g. LARMOR has a height stage to tweak some aspects
2. They may all be using the same OPI but it isn't obviously the same, or there are settings which mean it displays differently - this will need to be verified, and if that is the case they should be made to match
3. If the sample changers are specific for each setup, it should be possible to create a generic sample changer that can be run which looks the same with the ability to load the more specific sample changer there as a secondary option for when detail is needed

[smk78]

I would say that the naming of axes (and rotations where present) and their sense (which way a smaller or bigger number drives) should be standardised across all the SANS instruments. At present, for example, a z-translation will move a SANS2D detector along the beam (Mantid convention). But on ZOOM a z-translation raises/lowers the sample stack!

If the answer to the above is 'yes', then should we adopt the Mantid coordinate system across the instruments.

SANS Group, please discuss.