SANS Changes¶

Table of Contents

Extensions and Improvements ¶

QResolution calculation for SANS: The q resolution can be calculated for for 1D reductions. See here for details.

SANS Q resolution

QResolution calculation user file commands: The q resolution calculation can be driven through the user file. For a comprehensive list of commands, see here.
Extended Beam Centre Finder for LARMOR: The beam centre finder takes the rotational movement of LARMOR’s detector into account.
Beam Centre Finder: Allow for 0 iterations. This produces the left, right, up and down partial workspaces which are normally used during the beam centre finder operation. This can be helpful if a user wants to see how far off the initial estimate is.
Beam Centre Finder: The user can now choose the search direction (`UP/DOWN` or `LEFT/RIGHT` or both). Having both enabled is the default setting

SANS Beam Centre Finder Selection

Expose AddRuns command for Python scripting : See here (here) for details
Handle cumulative sample logs for SANS: Adding files using the Add Tabs GUI now ensures that cumulative sample log entries (good_frames, good_uah_log, ...) are added up in a cumulative manner and not just concatenated and then sorted via time-stamp.
Apply event time limits to Can: Event-based Can workspaces were previously immediately converted into histogrammed workspaces after loading. The binning was matched to the binning of the monitor workspace. Now the Can workspace is loaded as an event workspace and is converted into a histogrammed workspace during the reduction flow. The binning used is the same as for the Sample. This means that the treatment of the Can and the Sample is now symmetric.
SANSStitch: Stitching of the Front/HAB and Rear/Main detectors has been exported to a dedicated Python algorithm.

SANSFitShiftScale: Fitting the Front/HAB and Rear/Main detectors to match has been exported to a dedicated Python algorithm.

Transmission settings in the GUI don’t allow specification of a shift or selection of M3 at the same time. GUI logic improved. M4 not selectable any more when using LOQ.
Can save and load x errors in the Nexus file format.
Removed temporary workspaces when saving in batch file mode
Reduction of warnings (e.g.algorithm history)
Fix distribution on fit algorithm
Corrections to TOFSANSResolutionByPixel and documentation
Make parsing of first line in Batch Mode silent in ISIS SANS
Make log level for beam centre finder independent of general log level
Fix link error in calculate transmission
Only accept valid user files in ISIS SANS: This includes legacy user files and txt files
Fix SumRowColumn algorithm
Fix 2D merge issue
Add system test for merged data in sans