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CombineDiffCal dialog.
Table of Contents
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| PixelCalibration | Input | TableWorkspace | Mandatory | OffsetsWorkspace generated from cross-correlation. This is the source of DIFCpixel. |
| GroupedCalibration | Input | TableWorkspace | Mandatory | DiffCal table generated from calibrating grouped spectra. This is the source of DIFCgroup. |
| CalibrationWorkspace | Input | MatrixWorkspace | Mandatory | Workspace where conversion from d-spacing to time-of-flight for each spectrum is determined from. This is the source of DIFCarb. |
| OutputWorkspace | Output | TableWorkspace | DiffCal table generated from calibrating grouped spectra | |
| MaskWorkspace | Input | MaskWorkspace | MaskedWorkspace for PixelCalibration |
This algorithm combines pixel calibration results (prev subscript below) from the PixelCalibration workspace with the calibration of focussed data from PDCalibration (pd subscript below).
The arb subscript below denotes values found in the CalibrationWorkspace.
Note
The GroupedCalibration table is assumed to not have DIFA or TZERO set.
It is also assumed to have calibration values for all detector pixels.
The effective calibration values are calculated using the following equations
where DIFC_{pd} is from PDCalibration, DIFC_{arb} is found in the parameter CalibrationWorkspace that was the input workspace to PDCalibration, and DIFC_{prev} is from the previous calibration.
The value of TZERO is unchanged
The value of DIFA is updated by
If pixels are masked in MaskWorkspace, missing from PixelCalibration, or missing from the list of contributing pixels in CalibrationWorkspace, then the calibration constants found in GroupedCalibration will be copied.
Categories: AlgorithmIndex | Diffraction\Utility