Methods

The technique catalog. Each Method names a technique abstractly and declares the device Families or Roles it binds and the Capability contract it realizes. A Method binds by Role (federation-portable) where a functional contract fits, and by Family (anatomical) where a specific device class is meant.

Generated from the catalog descriptor

This page is generated from catalog/catalog.yaml. Edit the descriptor, not this page. For the naming, governance, and closed-core conventions, see the Catalog overview.

Method	Capability	Needed families	Required roles	Purpose
motor_homing	cora.capability.maintenance		Positioner	Reference-position seek for motorized Devices; leaves encoders zeroed for absolute moves.
resolution_alignment	cora.capability.alignment		Positioner, Detector	The resolution step, an iterative propagation-distance peak search on a mounted resolution target.
focus_alignment	cora.capability.alignment		Positioner, Detector	The focus step, an iterative Sample-Z peak search for depth-of-focus.
center_alignment	cora.capability.alignment		Positioner, Detector	The center step, iterative 0/180 convergence on the rotation-axis pixel position.
roll_alignment	cora.capability.alignment		Positioner, Detector	The roll step, iterative 0/180 Y-delta correction so the rotation axis is perpendicular to the camera Y axis.
pitch_alignment	cora.capability.alignment		Positioner, Detector	The pitch step, iterative 0/180 sharpness-delta correction so the rotation axis is perpendicular to the beam.
dark_field	cora.capability.acquisition		Shutter, Detector	Dark-frame stack plus pixel-wise baseline, producing a Dataset for reconstruction subtraction.
flat_field	cora.capability.acquisition		Shutter, Detector	Flat-field stack (shutter open, no sample) plus pixel-wise baseline, producing a Dataset for reconstruction division.
hexapod_reboot	cora.capability.maintenance	Hexapod		Recovery for a stuck hexapod controller: IOC stop, PDU power-cycle, IOC start, enable check.
tomography	cora.capability.tomography		Positioner, Detector	The canonical imaging routine; a Run producing an H5 projection-stack Dataset from operator exposure, projections, and angle-range.
sensitivity_characterization	cora.capability.characterization		Positioner, Detector	Pre-step measuring motor-sensitivity constants empirically (bump an axis by a known delta, observe centroid shift, K = shift/bump).
energy_characterization	cora.capability.characterization	Monochromator, RotaryStage		Energy calibration via a channel-cut crystal: rock a crystal of known 2d through its Bragg peak, fit the peak angle, recover the true beam energy, and re-save the corrected per-energy curve as a new revision (ENERGY-7).
streaming_tomography	cora.capability.tomography		Positioner, Detector	Live-reconstruction tomography supporting mid-flight adjust_run steering on observed reco quality.
continuous_rotation_tomography	cora.capability.tomography		Positioner, Detector	N back-to-back rotation Runs sharing one Plan and Subject under a Campaign(intent=Series).
mosaic_tomography	cora.capability.tomography		Positioner, Detector	Tiled lateral-translation tomography for samples larger than the field of view, stitched in post.
xpcs	cora.capability.xpcs		Detector, Shutter, Controller	Coherent-scattering time-series acquisition: a high-rate frame stream on a coherent area detector, gated by the softGlue timing, correlated downstream into g2. The frame stream is DAQ-owned, distinct from a poll-to-Done capture (the event-stream acquisition axis).
powder_diffraction	cora.capability.diffraction		Detector	Powder / polycrystalline diffraction: an azimuthally-integrated ring pattern on an area or strip detector as the sample is spun, giving a one-dimensional intensity-vs-angle pattern for phase ID, Rietveld refinement, or total-scattering / PDF.
single_crystal_diffraction	cora.capability.diffraction	PseudoAxis	Detector	Small-molecule / chemical single-crystal diffraction: indexed Bragg reflections collected over sample orientations on an area detector, for small-unit-cell structure solution. Distinct from macromolecular_crystallography by sample scale and refinement pipeline.
macromolecular_crystallography	cora.capability.diffraction		Positioner, Detector	Macromolecular crystallography (MX) rotation data collection: a rotation series on a protein crystal mounted on a goniometer, area-detector frames per oscillation wedge, for macromolecular structure solution.
serial_crystallography	cora.capability.diffraction		Positioner, Detector, Controller	Serial crystallography (SSX / SFX): still or minimal-rotation single shots across many crystals delivered by fixed-target chip or injector, each a diffraction pattern, merged downstream. Distinct from macromolecular_crystallography by the fixed-target / serial delivery act rather than a rotation series.
surface_diffraction	cora.capability.diffraction	PseudoAxis	Detector	Surface / interface diffraction and reflectivity: specular and off-specular Bragg intensities measured with a multi-circle diffractometer at grazing incidence, for surface structure and layer profiles.
small_wide_angle_scattering	cora.capability.scattering		Detector	Small- and wide-angle X-ray scattering (SAXS/WAXS): a single exposure capturing both the small-angle and wide-angle diffuse pattern on area detectors, for nanostructure and packing. SAXS and WAXS are one simultaneous act, not two Methods.
grazing_incidence_scattering	cora.capability.scattering	PseudoAxis	Detector	Grazing-incidence small/wide-angle scattering (GISAXS / GIWAXS): SAXS/WAXS geometry at a grazing angle on a reflecting surface or thin film, probing in-plane and out-of-plane nanostructure. Distinct from small_wide_angle_scattering by the grazing surface-sensitive geometry.
coherent_diffraction_imaging	cora.capability.scattering		Detector, Positioner	Coherent diffraction imaging (CDI): oversampled coherent far-field diffraction patterns from an isolated or scanned sample, phase-retrieved into a real-space image. Distinct from ptychography by the single-view (non-scanning) act.
ptychography	cora.capability.scattering		Detector, Positioner	Ptychography: coherent diffraction patterns recorded at overlapping scan positions of a confined probe, jointly phase-retrieved into a high-resolution image and probe. Distinct from coherent_diffraction_imaging by the overlapping-scan act.
absorption_spectroscopy	cora.capability.absorption_spectroscopy	Monochromator		Step-scanned X-ray absorption spectroscopy (XAS / XANES / EXAFS): the monochromator steps the incident energy across an edge while transmission or fluorescence yield is recorded, giving an absorption energy scan. XANES and EXAFS are near-edge and extended windows of one scan.
continuous_absorption_spectroscopy	cora.capability.absorption_spectroscopy	Monochromator		Continuous-energy X-ray absorption spectroscopy (QEXAFS / trajectory-energy fly-scan): the monochromator sweeps energy continuously while yield is streamed, for fast / time-resolved XAS. Distinct from absorption_spectroscopy by the continuous fly-scan act rather than discrete steps.
xray_fluorescence_mapping	cora.capability.emission_spectroscopy		Sensor, Positioner	Scanning X-ray fluorescence mapping (XRF): a focused beam raster-scans the sample while an energy-dispersive detector records the fluorescence spectrum per pixel, giving element maps. Distinct from the crystal-analyzer emission Methods by the energy-dispersive point detector.
xray_emission_spectroscopy	cora.capability.emission_spectroscopy		Detector	X-ray emission spectroscopy (XES / HERFD): a crystal-analyzer spectrometer disperses the emitted fluorescence lines to high energy resolution at a fixed incident energy, resolving chemical state. Distinct from xray_fluorescence_mapping by the wavelength-dispersive crystal analyzer.
resonant_inelastic_scattering	cora.capability.emission_spectroscopy		Positioner	Resonant inelastic X-ray scattering (RIXS): the incident energy is tuned to an absorption edge and the energy-loss spectrum of scattered photons is dispersed on a long spectrometer arm, giving a two-dimensional incident-vs-emitted map of electronic excitations.
inelastic_scattering	cora.capability.emission_spectroscopy		Positioner	Momentum-resolved (non-resonant) inelastic X-ray scattering (IXS): a multi-analyzer spectrometer arm resolves small energy losses versus momentum transfer, probing phonons and collective excitations. Distinct from RIXS by the non-resonant momentum-scan act.
xray_photoelectron_spectroscopy	cora.capability.photoemission_spectroscopy		Detector, Positioner	X-ray photoelectron spectroscopy (XPS / soft-X-ray photoemission): an electron analyzer records the kinetic-energy distribution of photoemitted electrons at a fixed photon energy, giving core-level and valence spectra for chemical state.
hard_xray_photoelectron_spectroscopy	cora.capability.photoemission_spectroscopy		Detector, Positioner	Hard X-ray photoelectron spectroscopy (HAXPES): XPS at multi-keV photon energy for greater probing depth, requiring a hard-X-ray-optimized analyzer and optics. Distinct from xray_photoelectron_spectroscopy by the depth-sensitive hard-X-ray act, not merely a photon-energy parameter.
angle_resolved_photoemission	cora.capability.photoemission_spectroscopy		Detector, Positioner	Angle-resolved photoemission spectroscopy (ARPES): an electron analyzer resolves photoelectron intensity versus kinetic energy AND emission angle, mapping the electronic band structure. Distinct from XPS by the added angle-resolved dimension.
radiography	cora.capability.tomography		Detector	Radiography: a single (or time-series) transmission projection through the sample onto a scintillator-coupled camera, without the rotation series that tomography adds. The projection primitive beneath tomography.
transmission_xray_microscopy	cora.capability.tomography	ZonePlate	Detector	Full-field transmission X-ray microscopy (TXM): a zone-plate-magnified transmission image (optionally Zernike phase contrast), per projection, optionally rotated for nano-tomography. Distinct from tomography by the X-ray objective (zone plate) forming a magnified image rather than a scintillator-relay projection.
beamline_energy_change	cora.capability.energy_change	Monochromator, Slit, PseudoAxis		Set the beam energy by driving the energy-tracking optic axes (the DMM Bragg arms + M2 offset, and the sample-slit vertical pair) to their per-energy positions as one coordinated move.