User Guide

• Installation
• Choppers
  • Processing NeXus Choppers
    • Identify In-phase Regions
    • Extract Plateau
    • Compute Chopper Phase
    • Build DiskChopper
  • Chopper Cascades
    • Overview
    • Example: WFM chopper cascade
    • Frame unwrapping
  • Frame Unwrapping
    • Context
    • Default mode
      • Pivot time
      • Computing time-of-flight
        • Unwrapped neutron time-of-arrival
        • Unwrapped neutron time-of-arrival minus pivot time
        • Unwrapped neutron time-of-arrival modulo the frame period
        • Using the subframes as a lookup table
        • Computing time-of-flight from the lookup
      • Converting to wavelength
    • Pulse-skipping mode
      • Computing time-of-flight
      • Conversion to wavelength
    • Wavelength-frame multiplication mode
      • Setting up the workflow
      • Computing time-of-flight
      • Conversion to wavelength
• Coordinate Transformations
  • About coordinate transformations
  • Built-in transformations
    • Overview of time-of-flight transformations
    • Transformation graphs
    • Performing a coordinate transformation
  • Customizing transformations
    • Gravity correction
    • Plane wave beam
    • Diffraction calibration
    • 2-D Rietveld
• GroupBy
  • Grouping with bins
    • Example 1 (dense data): split-sum-combine
    • Example 2 (event data): split-flatten-combine
• From Mantid to Scipp
  • Data types
    • Workspaces
      • Notes
    • Other
  • Concepts
  • Algorithms
    • Notes
    • Test Data
    • Generic algorithms
      • CloneWorkspace
      • DeleteWorkspace
      • ExtractSingleSpectrum
      • ExtractSpectra / CropWorkspace
      • Transpose
      • AppendSpectra
      • ConjoinXRuns
      • ConjoinSpectra
      • GroupWorkspaces
      • Rebin Workspace2D into Workspace2D
      • Rebin EventWorkspace preserving events
      • Rebin EventWorkspace into Workspace2D
      • Rebin with logarithmic bins
      • Scale (multiplication)
      • Scale (addition)
      • ScaleX
      • SumSpectra
    • Neutron-scattering specific algorithms
      • ConvertUnits
• Instrument view
  • Overview
  • Displaying additional components
  • Defining detector positions
• Recipes: How do I …?
  • General
    • Compute total counts per pixel
  • Event data
    • Compute number of events
    • Mask a time-of-flight region such as a prompt-pulse
  • Plotting
    • Plot a single spectrum
    • Plot comparison of multiple spectra
• Interactive masking tool
  • Two-dimensional masks
  • One-dimensional masks
  • Using the masks from the tool
• Wavelength frame multiplication
  • Computing time-of-flight for WFM data
    • Setting up the beamline
      • Creating the beamline choppers
      • Adding a detector
      • Convert the choppers
    • Creating some neutron events
    • Using the chopper cascade to chop the pulse
      • Create a pulse of neutrons
      • Propagate the neutrons through the choppers
    • Computing the time-of-flight coordinate using Sciline
      • Setting up the workflow
      • Checking the frame bounds
      • Computing a time-of-flight coordinate
      • Converting to wavelength
      • Comparing to the ground truth
  • DREAM in WFM mode
    • Setting up the beamline
      • Creating the beamline choppers
      • Adding a detector
      • Convert the choppers
    • Creating some neutron events
    • Using the chopper cascade to chop the pulse
      • Create a pulse of neutrons
      • Propagate the neutrons through the choppers
    • Computing the time-of-flight coordinate using Sciline
      • Setting up the workflow
      • Checking the frame bounds
      • Computing a time-of-flight coordinate
      • Converting to wavelength
      • Comparing to the ground truth
    • Multiple detector pixels
    • Handling time overlap between subframes
• Background on algorithms
  • two_theta gravity correction
    • Derivation and approximation
    • Validity of the approximation
• Absorption correction example
  • What quadrature should I use?