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ConvertEmptyToTof v1¶

Warning

ConvertEmptyToTof is deprecated and has no replacement.

Summary ¶

Converts the channel number to time of flight.

Properties ¶

Name	Direction	Type	Default	Description
InputWorkspace	Input	Workspace2D	Mandatory	Name of the input workspace
OutputWorkspace	Output	MatrixWorkspace	Mandatory	Name of the output workspace, can be the same as the input
ListOfSpectraIndices	Input	int list		A list of spectra workspace indices as a string with ranges; e.g. 5-10,15,20-23. Optional: if not specified, then the Start/EndIndex fields are used alone. If specified, the range and the list are combined (without duplicating indices). For example, a range of 10 to 20 and a list ‘12,15,26,28’ gives ‘10-20,26,28’.
ListOfChannelIndices	Input	int list		A list of spectra indices as a string with ranges; e.g. 5-10,15,20-23. Optional: if not specified, then the Start/EndIndex fields are used alone. If specified, the range and the list are combined (without duplicating indices). For example, a range of 10 to 20 and a list ‘12,15,26,28’ gives ‘10-20,26,28’.
ElasticPeakPosition	Input	number	Optional	Value of elastic peak position if none of the above are filled in.
ElasticPeakPositionSpectrum	Input	number	Optional	Workspace Index used for elastic peak position above.

Only for ILL usage. In the future, ILL plans to load data in raw format (no units used). The X-axis represent the time channel number. This algorithm converts the channel number to time of flight using the distances source-sample-detectors defined in the IDF. In addition, the user has to input the fields:

ListOfSpectraIndices - Spectrum or list of spectra to look for the elastic peak. Note that the spectra chosen must be at the same distance.
ListOfChannelIndices - Elastic peak channels - For the selected spetra above, the list/range of channels to look for the elastic peak (e.g. range).

Note that the Input Workspace must have the following properties:

wavelength
channel_width

Instead of using the fields above (ListOfSpectraIndices and ListOfChannelIndices), the user can specify the Elastic Peak Position (channel number) and the respective spectrum, using the following fields: