NXxps sub app-def #30
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- Angle between beam and sample normal-> needed for determination of probing depth - Angle between beam and analyzer axes -> needed for data analysis
lukaspie
changed the title
Instead of having two fields on the instrument for the angle between beam and sample and the angle between beam and analyser, this information is stored in depends_on and NXtransformations in NXinstrument and NXsample, respectively.
- The transmission function contains an additional NXnote field "file" describing the file in which the TF data is stored.
- Angle between beam and sample normal-> needed for determination of probing depth - Angle between beam and analyzer axes -> needed for data analysis
Instead of having two fields on the instrument for the angle between beam and sample and the angle between beam and analyser, this information is stored in depends_on and NXtransformations in NXinstrument and NXsample, respectively.
- The transmission function contains an additional NXnote field "file" describing the file in which the TF data is stored.
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There are a lot of great suggestions here. I have, however, one quite general comment: What is your goal for this application definition, i.e. what application do you have in mind that this should enable? I see most of your suggestions as very important additions, would however either place them in NXmpes, or in the base classes, and don't see why this has to be an extra application definition, because I don't see the use case that distincts it from the most general NXmpes.
In any case, you should add any item you add here and that is not in NXmpes to the respective base classes, because otherwise you break compatibility with NXmpes (an NXmpes_xps file will then not conform to NXmpes, because your newly added fields are not defined within the scope of NXmpes).
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Update to current NXmpes, will need to modify once stable NXmpes is available. |
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Closed in favor of #170. |
This is the initial draft for the contributed application definition for XPS. Related to #90.
EDIT: Everything below is outdated.
There are several items that need to be discussed before this pull request can be merged:- /instrument/energy_resolution should be recommended, not required -> is a measured value (typically from Ag 3d5/2 FWHM of sputter-cleaned Ag foil), but is (a) not known every time and can (b) update over time (detector degradation). The actual energy resolution of the measurement depends strongly on the sample and the X-ray source.- /instrument/source(NXsource): do we want to allow UPS measurements as well? -> UV source- /instrument/beam_probe/distance: cannot really be required, hard to determine experimentally.- /instrument/beam_probe/incident_energy_spread: is it needed?- /instrument/beam_/incident_polarization: is it needed?- /instrument/collectioncolumn/transmission_function:- should it be stored here and/or with the intensity calibration?
- update type and units- /instrument/energydispersion/scheme:Are there any other possible values other than
["Standard",
"Angular dispersive",
"Selective area",
]
- /instrument/energydispersion/energy_scan_mode:- which enumeration values make sense? Currently:[
"fixed analyzer transmission",
"fixed retarding ratio",
"fixed energies",
"snapshot",
"detector voltage scan",
"constant final state",
"constant initial state",
]
- update doc- /instrument/energydispersion/iris:- does this belong to energydispersion or collectioncolumns?
- /instrument/electron_detector/amplifier_type:- can there be any other than "MCP" or "channeltron"?
- /instrument/electron_detector/detector_typeAre there any other possible values other than
[
"DLD",
"Phosphor+CCD",
"Phosphor+CMOS",
"ECMOS",
"Anode",
"Multi-anode",
]
- /instrument/geometry- This should not be NXtransformation.
- /sample/preparation_date- how to handle multiple preparation and pre-treatments on different days
- /sample/type- Add more examples to the enumeration
- /calibration/intensity_calibration/transmission_function:- update doc
- /data/energy/type:- indicate if energy axis is given in kinetic or binding energy values.
- /data/energy/step_size:- does this belong here, could also be on collectioncolumn?
others:- use of flood gun?- where to store transmission function?- How to present dwell time?