"Vesuvio" Instrument Support

[Peter Parker]

• Decipher "raw", "rawb" and "tfit" programs. (Fortran code files attached.)
• Discuss further with Jerry Mayers.
• Make decision on best way to implement within Mantid. (Via UI, scripts, etc.)
• Make changes.

[Peter Parker]

Forward Scattering Angles Routine

[Peter Parker]

Backward Scattering Angles Routine

[Peter Parker]

Tfit Routine

[Peter Parker]

Refs #4513 - Initial Raw and RawB translation.

Added a python algorithm which is the first attempt at translating the Raw and RawB Fortran code. Note:

1. Backward foil periods are currently assumed to always be the same for each run. Check that this is the case. If not, check that they are always the same for detectors in the same module.

2. Check that periods used for monitor calculations can be different from the periods used for corresponding spectra.

3. Is dividing through by a "Time" ws not equivalent to a Rebin?

4. Backward results do not currently match RawB output. Check that RAWB.FOR;8 is actually the same code that has been compiled to create the RawB program currently on the VMS systems.

5. Not sure if runs with less / more than 6 periods should be supported. If so, what are the period schemes in those cases?

Will now pass the script and pose questions to Jerry. Will also make a start dechipering TFitD.

Changeset: 1b91d6be07d253586701cce3b89d45f079c3f1dc

[Peter Parker]

Discussion with Jerry.

1. This is a correct assumption to make. More clearly: detectors that are part of the same module share the same foil out, thin foil and thick foil periods. There are three modules, and each are in a different foil "state" in any given period.

2. Didn't bring up. Happy to just reproduce current functionality at this point.

3. N/A. Still need to find this out.

4. RAWB.FOR;8 is definately the file used. The problem likely has something to do with the fact that, at some point in the converted Python script, the labelling of foil periods seems to be mixed up so that foil out should be thick foil.

5. Jerry has said that runs with less / more than 6 periods are not going to be supported any time soon.

[Peter Parker]

Current script does not support only a single run file. (SumWsList throws error.)

[Peter Parker]

Refs #4513 - Minor bug fix of current Vesuvio code.

Changeset: 65ba1ffa7fff8bbe56f4796f00c88f225607f3d7

[Peter Parker]

Refs #4513 - Minor bug fix of current Vesuvio code.

Changeset: 65ba1ffa7fff8bbe56f4796f00c88f225607f3d7

[Nick Draper]

Moved at end of release 2.1

[Peter Parker]

Refs #4513 - Further amendments to LoadEVSRaw

• Remove Beta property, replaced with a value of 0.28 in code.
• Swap around defs of thick and out periods. Need to look into this.
• Comments. Changeset: 359bd1c139ef193fc2f6b56874dbd270979911ec

[Peter Parker]

Refs #4513 - Further amendments to LoadEVSRaw

• Remove Beta property, replaced with a value of 0.28 in code.
• Swap around defs of thick and out periods. Need to look into this.
• Comments. Changeset: 359bd1c139ef193fc2f6b56874dbd270979911ec

[Peter Parker]

Refs #4513 - Further amendments to LoadEVSRaw

• Remove Beta property, replaced with a value of 0.28 in code.
• Swap around defs of thick and out periods. Need to look into this.
• Comments. Changeset: 359bd1c139ef193fc2f6b56874dbd270979911ec

[Nick Draper]

Moved at the end of release 2.2

[Nick Draper]

Moved to milestone 2.4

[Martyn Gigg]

Closing to break this down in to smaller tickets. First is #6316

[Nick Draper]

Agreed

[Stuart Campbell]

This ticket has been transferred to github issue ​5360