Import 3 x imaging instruments from various sources

[willend]

Free-form text area

Please describe what your PR is adding in terms of features or bugfixes:

Import of:

• Radiography_Li_battery (Mads Bertelsen & Viktor Holm)
• Radiography_Sword (Mads Bertelsen & Viktor Holm)
• PSI_ICON (Peter Willendrup & Estrid B. Naver)
• Required datafiles and a couple of new components

---

Declaration of use of AI-tools

• Please add a checkmark here if you used AI-tools during the work for this contribution
• Furter, please describe how / where and for what the tools were used:
  No AI this time round. Just me… ;-)

---

Development OS / boundary conditions

Please describe what OS you developed and tested your additions on, and if any special dependencies are required:

macOS Tahoe, conda-forge dev-tools

---

PR Checklist for contributing to McStas/McXtrace

For a coherent and useful contribution to McStas/McXtrace, please fill in relevant parts of the checklist:

• My contribution includes a new component file

  • I have ensured that naming of parameters are in the style of existing components. (Please check the McStas or McXtrace NOMENCLATURE docs.)
  • I have ensured that component parameters are in the usually units of McStas or McXtrace (SI + neutron/x-ray 'usual' units)
  • I have used the mcdoc utility and rendered a reasonable documentation page for the component (please attach as screenshot in comments!)
  • I have ensured that basic use of the component is OK (e.g. an instrument using it compiles?)
  • I have included a corresponding example instrument and will fill in the new instrument section below
  • I have used the mccode-clangformat tool to apply the standard McCode component indentation scheme
  • My new component is added within the contrib component category

• My contribution includes a new instrument file

  • I have used the mcdoc utility and rendered a reasonable documentation page for the instrument (please attach as screenshot in comments!)
  • I have ensured that basic use of the instrument is OK (e.g. it compiles?)
  • ... and provided reasonable default parameters in that instrument that produce reasonable output
  • ... and maybe even added a %Example: line to describe expected behaviour
  • I have used the mcrun --c-lint "linter" and followed advice to remove most / all warnings that are raised
  • My new instrument is added within the examples hierarchy in a folder in the style of examples/ESS/New_stuff/New_stuff.instr
  • My new instrument has a new, unique filename, not clashing with existing example instruments
  • My new instrument requires a data/input file. If the datafile is specific for my instrument I have left it in the same example folder, but if general use I have placed it in the global data folder.

---

[willend]

Instrument Radiography_Lithium_Battery:

Instrument Radiography_Sword:

Instrument PSI_ICON:

[willend]

Component PSD_monitor_Filter:

Component Wavelength_Diffuser:

[willend]

@jorobledo, @farhi here comes the 3 x imaging instruments discussed elsewhere

[mads-bertelsen]

Nice to have these instruments included.

The sword instrument file has some additional details added specifically about ODIN since I saw it, but would be nice if it included credit to me for making the sword.

The refractor instrument is not the final version that was used in Estrids paper, that used union components. As far as I can see, the version included with a group of refractors can work at very low angles, but a ray would not be able to go from one to another. At very low angles reflections would be relevant, but these are disabled. We could contact Estrid for her final version, but this version can still be added. It's probably faster to run.