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# PeakHKLErrors¶

## Description¶

This function calculates, for each peak, its h, k, and l offsets from an integer using goniometer settings and/or tilt and sample offsets from the parameters.

The original PeaksWorkspace is unchanged.

### Outputs¶

The PeaksWorkspace is NOT changed.

The argument out in function1D has ,for each peak, the h,k, and l offsets from an integer using the current parameter values.

## Attributes (non-fitting parameters)¶

Name

Type

Default

Description

OptRuns

A list of run numbers whose sample orientations are to be optimized. The list is separated by /

PeakWorkspaceName

The name of the PeaksWorkspace in the AnalysisDataService

## Properties (fitting parameters)¶

Name

Default

Description

SampleXOffset

0.0

Sample x offset

SampleYOffset

0.0

Sample y offset

SampleZOffset

0.0

Sample z offset

GonRotx

0.0

3rd Rotation of Goniometer about the x axis

GonRoty

0.0

2nd Rotation of Goniometer about the y axis

GonRotz

0.0

1st Rotation of Goniometer about the z axis

1. SampleXOffset- XOffset of Goniometer center from instrument center in meters

2. SampleYOffset- YOffset of Goniometer center from instrument center in meters

3. SampleZOffset- YOffset of Goniometer center from instrument center in meters

4. GonRotx- For Goniometer tilt. Rotation about x-axis in degrees where Tilt = Rotx(GonRotx)*Roty(GonRoty)*Rotz(GonRotz)

5. GonRoty- For Goniometer tilt. Rotation about y-axis

6. GonRotz- For Goniometer tilt. Rotation about z-axis( done 1st AFTER phi-chi-omega rotations)

7. chixxx - xxx is a run number from OptRuns. This is the chi angle in degrees that will be used for that run( before tilting)

8. phixxx - xxx is a run number from OptRuns. This is the phi angle in degrees that will be used for that run

9. omegaxxx - xxx is a run number from OptRuns. This is the omega angle in degrees that will be used for that run

Note

When used in fitting, some or all of the first 6 parameters could be tied to zero.

Categories: FitFunctions | Calibration