SANSConvertToQ dialog.
Table of Contents
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| SANSState | Input | Dictionary | A property manager which fulfills the SANSState contract. | |
| InputWorkspace | Input | MatrixWorkspace | Mandatory | The main input workspace. |
| InputWorkspaceWavelengthAdjustment | Input | MatrixWorkspace | The workspace which contains only wavelength-specific adjustments, ie which affects all spectra equally. | |
| InputWorkspacePixelAdjustment | Input | MatrixWorkspace | The workspace which contains only pixel-specific adjustments, ie which affects all bins within a spectrum equally. | |
| InputWorkspaceWavelengthAndPixelAdjustment | Input | MatrixWorkspace | The workspace which contains wavelength- and pixel-specific adjustments. | |
| OutputParts | Input | boolean | False | Set to true to output two additional workspaces which will have the names OutputWorkspace_sumOfCounts OutputWorkspace_sumOfNormFactors. The division of _sumOfCounts and _sumOfNormFactors equals the workspace returned by the property OutputWorkspace (default is false). |
| OutputWorkspace | Output | MatrixWorkspace | Mandatory | The reduced workspace |
This algorithm converts a SANS workspace in wavelength to a workspace in momentum transfer. The conversion is either provided by Q1D v2 or by Qxy v1. The settings for the algorithm are provided by the state object. Besides the algorithm which is to be converted three types of adjustment workspaces can be provided:
Note that the OutputParts option allows for extracting the count and normalization workspaces which are being produced by Q1D v2 or by Qxy v1.
Currently the mask mechanism is implemented for SANS2D, LOQ and LARMOR.
The required information for the momentum transfer conversion is retrieved from a state object.
The elements are:
| Entry | Type | Description | Mandatory | Default |
|---|---|---|---|---|
| reduction_dimensionality | Reduction- Dimensionality enum | The dimensionality of the reduction | No | None |
| use_gravity | Bool | If a gravity correction is to be applied | No | False |
| gravity_extra_length | Float | The additional length in m if a gravity correction is to be applied | No | |
| radius_cutoff | Float | A radius cutoff in m | No | |
| wavelength_cutoff | RangeStepType enum | A wavelength cutoff | No | |
| q_min | Float | The minimal momentum transfer (only relevant for 1D reductions) | Yes, if 2D setting has not been prov. | None |
| q_max | Float | The maximal momentum transfer (only relevant for 1D reductions) | Yes, if 2D setting has not been prov. | None |
| q_1d_rebin_string | String | Rebinning parameters for momentum transfer | Yes, if 2D setting has not been prov. | None |
| q_xy_max | Float | Maximal momentum transfer (only relevant for 2D reduction) | Yes, if 1D setting has not been prov. | None |
| q_xy_max | Float | Maximal momentum transfer (only relevant for 2D reduction) | Yes, if 1D setting has not been prov. | None |
| q_xy_step | Float | Momentum transfer step (only relevant for 2D reduction) | Yes, if 1D setting has not been prov. | None |
| q_xy_step_type | RangeStepType enum | Momentum transfer step type (only relevant for 2D reduction) | Yes, if 1D setting has not been prov. | None |
| use_q_resolution | Bool | If momentum transfer resolution calculation is to be used | No | None |
| q_resolution_collimation_length | Float | The collimation length in m | No | None |
| q_resolution_delta_r | Float | The virtual ring width on the detector | No | None |
| moderator_file | String | Moderator file with time spread information | No | None |
| q_resolution_a1 | Float | Source aperture radius information information | If use_q_resolution is set and rect. app. is not set | None |
| q_resolution_a2 | Float | Sample aperture radius information information | If use_q_resolution is set and rect. app. is not set | None |
| q_resolution_h1 | Float | Source aperture height (rectangular) | If use_q_resolution is set and circ. app. is not set | None |
| q_resolution_h2 | Float | Sample aperture height (rectangular) | If use_q_resolution is set and circ. app. is not set | None |
| q_resolution_w1 | Float | Source aperture width (rectangular) | If use_q_resolution is set and circ. app. is not set | None |
| q_resolution_w2 | Float | Sample aperture width (rectangular) | If use_q_resolution is set and circ. app. is not set | None |
Note that the momentum transfer resolution calculation is only applicable for 1D reductions.
Note that these settings should be only populated via the GUI or the Python Interface of ISIS SANS.
Categories: Algorithms | SANS\ConvertToQ
Python: SANSConvertToQ.py (last modified: 2018-01-16)