Indirect Data Reduction Testing

Prerequisites

ISIS Calibration

Preparation

  • Instrument IRIS

  • You need access to the ISIS data archive

Time required 2-5 minutes


  1. Open Interfaces > Indirect > Data reduction

  2. Make sure Instrument is set to IRIS

  3. Go to the ISIS calibration

  4. Enter Input Runs 26173

  5. Click Run

  6. This should generate a workspace with _calib at the end, delete this workspace

  7. Check the Scale by factor checkbox and change the value of the scale to 0.5.

  8. Click Run

  9. This should generate a workspace with _calib at the end

  10. Make sure to keep the _calib workspace, it is needed for the ISIS Diagnostics test

  11. Check the Create RES box

  12. Click Run

  13. This should generate a workspace with _res at the end

  14. In the Output options, select the _res workspace and click Plot Spectra. This should produce a spectrum plot.

  15. Then select the _calib workspace and use the down arrow to click Plot Bins. This should produce a bin plot.

  16. Enter Input Runs 55878-55879 and check Sum Files

  17. Click Run, this should produce a _calib workspace

  18. Make sure to also keep this _calib workspace, it is needed for the next test

  19. Enter Input Runs 59057-59059 and check Sum Files

  20. Set Reflection to 004

  21. Click Run

  22. This should produce a new _calib workspace, with 004 in the name.

  23. Before moving on, set Reflection to 002

ISIS Energy Transfer

Time required 5-10 minutes


  1. Open Interfaces > Indirect > Data reduction

  2. Make sure Instrument is set to IRIS

  3. Make sure the tab is set to ISIS Energy Transfer

  4. Check the Sum Files box

  5. In the Input Runs box enter 26184-26185

  6. Click Run

  7. Check the Use Calib File box

  8. Change File to Workspace and choose the _calib workspace previously created (55878 from the previous test)

  9. Click Run

  10. In the main GUI right-click on the iris26184-26185_multi_graphite002_red workspace

  11. Choose Plot spectrum, note the number of spectra, should be 51

  12. Click Cancel

  13. In the Data reduction GUI, change the Detector Grouping to Groups

  14. Set Groups to 5

  15. Click Run

  16. In the main GUI right-click on the iris26184-26185_multi_graphite002_red workspace

  17. Choose Plot spectrum, note the number of spectra, should be 6

  18. Choose Plot All, this should result in a plot of all 6 spectra

  19. Open Interfaces > Inelastic > Data Processor and go to the S(Q, W) tab

  20. Change File to Workspace and load the _red workspace just created

  21. Q-Low and Q-High should be automatically updated to the y axis range of the contour plot.

  22. E-Low and E-High should be automatically updated to the x axis range of the contour plot.

  23. Click Run. An _sqw workspace should be created.

  24. Check Rebin in energy

  25. Click Run

  26. Within the Output section, click the down arrow on the Plot Spectra button and then select Open Slice Viewer, this should open a slice viewer window.

  27. Click Manage User Directories and set the default save location

  28. Click Save Result

  29. Check that the .nxs file was created in the correct location

ISIS Diagnostics

Time required 5-10 minutes


  1. Open Interfaces > Indirect > Data reduction

  2. With Instrument set to IRIS, navigate to the ISIS Diagnostic tab

  3. On Input Runs, type 26176 and press the Enter key

  4. The plot widget should render a spectrum with two black sliders indicating integration limits

  5. On the property browser, change the value of the Preview Spectrum property, the plot should update with the appropriate spectrum whenever the number is changed, unless is outside the range of allowed spectra

  6. Move the integration sliders, and check that the values of Start and End under the Peak property on the property browser are accordingly updated

  7. Change the values of Start and End on the property browser and check that the slider position is updated on the plot

  8. Tick the Use Calibration checkbox and select the workspace previously generated, irs26173_graphite002_calib, on the data selector

  9. Change the Spectra Min property to 3

  10. Click Run

  11. A preview spectra should be rendered, plotting the integrated counts versus the spectrum number.

  12. A new workspace with suffix _slice should be generated on the ADS

  13. On Output, clicking the button Plot Spectra should open a new plot window with the same data as the preview plot.

  14. Tick on the Use Two Ranges property. Two green sliders should appear on the plot

  15. Move the green sliders and check that the Start and End properties under the Background property are updated accordingly

  16. Selecting a non-overlapping background range, click on the Run button

  17. The preview plot and the workspace ending in _slice should update with the new integrated time slice

Transmission

Time required 3-5 minutes


  1. Open Interfaces > Indirect > Data reduction

  2. Make sure Instrument is set to IRIS, Analyser to graphite and Reflection to 002

  3. Navigate to the Transmission tab

  4. On Sample, type 26176 and press the Enter key

  5. On Background, type 26174 and press the Enter key

  6. Click Run

  7. The preview plot should be rendered, displaying three lines indicating the monitor detection for the can, the sample, and the transmission

  8. A workspace with suffix _transmission, and a workspace group with suffix _transmission_group should be generated on the ADS. The _transmission_group workspace should contain three workspaces with suffices _Sam, _Can and _Trans

  9. Clicking the Plot Spectra button, a plot window should prompt, displaying the same lines as in the preview plot