\(\renewcommand\AA{\unicode{x212B}}\)

Reflectometry Changes

ISIS Reflectometry Interface

New features

New table to specify settings on a per-angle basis

• The following new options have been added to the Settings tab:

  • A new table has been added to the Experiment settings which allows default options to be specified on a per-angle basis. If a row in the Runs tab contains an angle, it will be looked up in this table and those options will be used if a matching angle is found (the angle does not have to be exact as it will match to within 100th of a degree). If you want to specify values that will be used by default for all runs, then simply leave the angle empty.

  • Two new drop-down boxes have been added to the Experiment settings, ‘ReductionType’ and ‘SummationType’, which are passed to the corresponding parameters of ReflectometryReductionOneAuto v3.

  • A ‘CorrectDetectors’ check box has been added to the Instrument settings, which maps to the corresponding property in ReflectometryReductionOneAuto v3.

• The ‘Get Defaults’ button now looks for values for the following additional properties in the IDF:

  • AnalysisMode

  • PolarizationAnalysis

  • TransRunStartOverlap

  • TransRunEndOverlap

  • IntegratedMonitors

  • DetectorCorrectionType

  • CorrectDetectors

  • SummationType

  • ReductionType

• There is a new checkbox on the SaveASCII tab which automatically saves the ‘IvsQ_binned’ workspace for single row reductions and the stitched workspace for group reductions.

Improvements

• Output workspace names and plotting:

  • Output workspace names now use + to indicate preprocessed (i.e. summed) workspaces, rather than _, which is used to indicate postprocessed (i.e. stitched) workspaces.

  • Output workspace names for time sliced data now contain the time periods, rather than just a slice index number.

  • Plotting results in event handling mode now plots the IvsQ_binned_ workspaces rather than IvsQ_, to make the behaviour consistent with non-event mode.

  • The Python code generated when you tick Output Notebook has been improved to support special characters (e.g. +) in workspace names.

  • The Output Notebook option now works for all groups that are processed as non-event workspaces. Previously, if event handling was enabled but a group contained non-event workspaces, generating the notebook was not performed.

• Properties on the Runs tab now take precedence over properties on the Settings tab.

• Extra tooltips have been added along with a new ? button which links to the documentation page.

• The runs tab table now contains grid lines to make it easier to see where to enter text.

• Menu items and toolbar buttons are now enabled/disabled when appropriate, e.g. to prevent table modification during processing. Directly editing table rows and settings is also disabled during processing.

• The ‘DirectBeam’ box has been from the settings tab because this is not used.

Bug fixes

• Fixed some bugs where transmission runs entered on the Settings tab were not being found, whether entered as a run number to load or as the name of an existing workspace in the ADS.

• The Python code generated when you tick Output Notebook has been changed so that all algorithm property values are enclosed in quotes. Unquoted values were causing failures in some algorithms. A bug has also been fixed in setting the legend location for the 4th (stitched) plot, which is shown when post-processing is performed.

• If any of the mandatory parameters listed below are missing when pressing ‘Get Default’ a warning is shown rather than a crash.

  • MonitorIntegralMax

  • MonitorIntegralMin

  • MonitorBackgroundMin,

  • MonitorBackgroundMax,

  • LambdaMin,

  • LambdaMax,

  • I0MonitorIndex

  • TransRunStartOverlap and TransRunEndOverlap if on SURF or CRISP.

• Fixed a bug where the processed state of rows was being reset when transferring additional rows into the table.

Features Removed

• The REFL Reduction, REFL SF Calculator and REFM Reduction graphical interface have been removed, they were not in active use, and were a source of bugs as well as using testing effort that is better directed elsewhere.

Algorithms

New features

• The new algorithm PolarizationEfficiencyCor v1 corrects for efficiencies in polarization analysis.

• The new algorithm LoadILLPolarizationFactors v1 can load the polarization efficiency files used on D17 at ILL.

• The new algorithm MRInspectData v1 takes in raw event data and determines reduction parameters.

• The new algorithm MRFilterCrossSections v1 loads a MR (SNS) data file into a workspace group comprising of a workspace for each cross-section.

Improvements

• Improvements to LoadILLReflectometry v1:

  • Figaro NeXus files are now properly handled.

  • A new property, BeamCentre allows user to manually specify the beam position on the detector.

  • The BeamPosition property was renamed to DirectBeamPosition to better reflect its usage.

  • The BraggAngle property of LoadILLReflectometry v1 now works as expected: the detector will be rotated such that the reflected peak on the detector will be at twice BraggAngle.

  • Slits S2 and S3 have been added to D17 and Figaro IDFs; the loader will adjust their positions according to the NeXus files.

  • The MagnetismReflectometryReduction now computes a Q-resolution estimate based on slit openings.

• Removed the RegionOfDirectBeam property from ReflectometryReductionOne v2 and ReflectometryReductionOneAuto v3 because this is not used.

Bug fixes

Release 3.12.0