Add Q, Psi, TwoTheta, Omega from pixel coordinates#

Summary#

Compute Q-vector components and angles from lab-frame pixel coordinates.

Metadata#

  • Module ID: XSGeometryFromPixelCoordinates

  • Module path: /home/runner/work/MoDaCor/MoDaCor/src/modacor/modules/technique_modules/scattering/xs_geometry_from_pixel_coordinates.py

  • Module version: 20260106.1

  • Keywords: geometry, Q, Psi, TwoTheta, Solid Angle, Omega, scattering

Required data keys#

  • coord_x

  • coord_y

  • coord_z

Modifies#

  • Q0: signal, uncertainties

  • Q1: signal, uncertainties

  • Q2: signal, uncertainties

  • Q: signal, uncertainties

  • Psi: signal

  • TwoTheta: signal, uncertainties

  • Omega: signal, uncertainties

Required arguments#

  • sample_z_source

  • wavelength_source

  • pixel_pitch_slow_source

  • pixel_pitch_fast_source

Default configuration#

{
  "detector_normal": [
    0.0,
    0.0,
    1.0
  ],
  "pixel_pitch_fast_source": null,
  "pixel_pitch_fast_uncertainties_sources": {},
  "pixel_pitch_fast_units_source": null,
  "pixel_pitch_slow_source": null,
  "pixel_pitch_slow_uncertainties_sources": {},
  "pixel_pitch_slow_units_source": null,
  "sample_z_source": null,
  "sample_z_uncertainties_sources": {},
  "sample_z_units_source": null,
  "wavelength_source": null,
  "wavelength_uncertainties_sources": {},
  "wavelength_units_source": null
}

Argument specification#

Argument

Type

Required

Default

Description

detector_normal

tuple

No

[0.0, 0.0, 1.0]

Detector normal unit vector in lab frame.

pixel_pitch_fast_source

str or NoneType

Yes

-

IoSources key for fast-axis pixel pitch signal.

pixel_pitch_fast_uncertainties_sources

dict

No

{}

Uncertainty sources for fast-axis pixel pitch.

pixel_pitch_fast_units_source

str or NoneType

No

-

IoSources key for fast-axis pixel pitch units.

pixel_pitch_slow_source

str or NoneType

Yes

-

IoSources key for slow-axis pixel pitch signal.

pixel_pitch_slow_uncertainties_sources

dict

No

{}

Uncertainty sources for slow-axis pixel pitch.

pixel_pitch_slow_units_source

str or NoneType

No

-

IoSources key for slow-axis pixel pitch units.

sample_z_source

str or NoneType

Yes

-

IoSources key for sample z-position signal.

sample_z_uncertainties_sources

dict

No

{}

Uncertainty sources for sample z-position.

sample_z_units_source

str or NoneType

No

-

IoSources key for sample z-position units.

wavelength_source

str or NoneType

Yes

-

IoSources key for wavelength signal.

wavelength_uncertainties_sources

dict

No

{}

Uncertainty sources for wavelength.

wavelength_units_source

str or NoneType

No

-

IoSources key for wavelength units.