Algorithm to correct for T0 on BASIS

[Stuart Campbell]

In the future this probably can be done more gracefully somewhere else, but we need to have a routine that corrects for the neutron emission time offset (i.e. T0). As I understand it the correction is:

t0 = offset + slope*primary_wavelength

We also need to check that Mantid calculates the primary wavelength correctly.

Michael: I'm just adding you as a CC on this ticket so you can see if I do something wrong!

[Stuart Campbell]

for BASIS:

offset = -5.0
slope = 11.967

[Stuart Campbell]

I am making this a lower priority as it might be just as good to calibrate the incident flight path.

[Nick Draper]

Bulk move of tickets to iteration 31 at the iteration 30 code freeze

[Stuart Campbell]

On second thoughts this is something that we should do and it should probably be done for ISIS as well.

The algorithm should be able to take the slope/intercept either as inputs or read default values from the parameter file.

[Stuart Campbell]

Jose - I thought that this might be a nice simple algorithm for you to have a go with.

I have put some default parameters in the BASIS_Parameters.xml file. Feel free to alter the names if you wish.

[Stuart Campbell]

Added default T0 parameters. refs #3437

Changeset: 7c78a4db8abdc6837a73344162c591a04bb191a5

[Jose Borreguero]

Refs #3437 New files header and sournce ModeratorTzero files

Changeset: fe09a4495bac87a76433e68d280b86d47c9c434f

[Jose Borreguero]

Refs #3437 Moved ModeratorTzero* files under Framework/UserAlgoritms

Changeset: b5b60d57d8fdd6ead41723724b943b12ad2e10e0

[Jose Borreguero]

Refs #3437 Changes in loop over detectors

modified: Framework/Algorithms/inc/MantidAlgorithms/ModeratorTzero.h modified: Framework/Algorithms/src/ModeratorTzero.cpp Changeset: 4de79322b54fe88ffd3b3012a341303b4a334284

[Jose Borreguero]

Refs #3437 Unit test with a small BASIS events Nexus file

modified: ../../Code/Mantid/Framework/Algorithms/inc/MantidAlgorithms/ModeratorTzero.h modified: ../../Code/Mantid/Framework/Algorithms/src/ModeratorTzero.cpp modified: ../../Code/Mantid/Framework/Algorithms/test/ModeratorTzeroTest.h new file: BSS_11841_event.nxs

Changeset: 423aedc75f013f2b99dd0a2f5b43329b42e76b7d

[Jose Borreguero]

Refs #3437 Unit test ModeratorTzeroTest completes for events files

• The test unit ignores pixes with no defined geometry, irrespective of whether they contain events. These events may be construed as background

• the next step is to test for histogram files Changeset: 42f9af8f93ffc1576a871fc8619feaaad7e8c327

[Jose Borreguero]

Refs #3437 Started working on testExec2D

• we will load a nexus processed file containing a histogram
• remember to uncomment the PARALLEL pragmas in the source file! Changeset: 57d3b6a306a09573284d3e923d05e3aad26072a5

[Jose Borreguero]

Refs #3437 added handling of histogram data

• modified: ModeratorTzero.cpp
• modified: ModeratorTzeroTest.h
• new file: BSS_11841_histo.dat Changeset: 15ca88116c5e8d6b2ed8a89d14e459b5d7950c35

[Jose Borreguero]

Refs #3437 Added description of properties for the WIKI page

• In ModeratorTzero::init(), added strings describing the algorithm properties Changeset: b3cce40a430f0ce868ef4b502a1139511ca44f51

[Jose Borreguero]

Refs #3437 Fix reference call to eventlist

• each evenlist should be retrieved as a reference Changeset: 80b3ddd939a6bc1d55719761723ab71a45a9a830

[Jose Borreguero]

Refs #3437 modify debug outputs

• specify debug outputs before and after modifying the TOF list-of-events Changeset: e4910bffd49031ea684c1b8d1001e2d6b0e4a747

[Stuart Campbell]

refs #3868 & #3437. Sone minor code analysis fixes.

Changeset: 00b0d0103a6034a71775ca0397538ae0a918cb4e

[Jose Borreguero]

Refs #3437 comment out test prior to debuging

Changeset: 6289191cd4aa329fb19ec0abb4e6b99efa0d5ced

[Jose Borreguero]

Refs #3437 Correction of Algorithm's category for identification

Changeset: 2db0aaf7b0a8089e2b9adeaebe3a500f9ce84d39

[Nick Draper]

Moved to iteration 33 at iteration 32 code freeze

[Jose Borreguero]

Refs #3437 Re-enabled testExec2D

• testExec2D works in Mac OS snowleopard and Ubuntu 11 Changeset: 6a3c5c34f8df4c4826ad49daa80859021bc5a84d

[Jose Borreguero]

Refs #3437 Added BSS_11841_event.nxs to AutoTestData

Changeset: 63b067b676e28f80ecd4539db9b0e0b3bf1cdb87

[Jose Borreguero]

Refs #3437 testExecEvents re-enabled

testExecEvents run on the Mac OS snowleopard and on Ubuntu 11

Changeset: 2c67c33730495972c93cc1ba14ff4c25d212ebab

[Michael Reuter]

Refs #3437. T_f needs to be in microseconds.

Changeset: 9fad7415faa373a75deb7973ae22620717836605

[Michael Reuter]

Refs #3437. Touching up code formatting.

Changeset: 18cf3de985fc66995e1831f8a56fdc1c6756bd0c

[Jose Borreguero]

Refs #3437 Re-enabled testExec2D

• testExec2D works in Mac OS snowleopard and Ubuntu 11 Changeset: 6a3c5c34f8df4c4826ad49daa80859021bc5a84d

[Jose Borreguero]

Refs #3437 Added BSS_11841_event.nxs to AutoTestData

Changeset: 63b067b676e28f80ecd4539db9b0e0b3bf1cdb87

[Jose Borreguero]

Refs #3437 testExecEvents re-enabled

testExecEvents run on the Mac OS snowleopard and on Ubuntu 11

Changeset: 2c67c33730495972c93cc1ba14ff4c25d212ebab

[Michael Reuter]

Refs #3437. T_f needs to be in microseconds.

Changeset: 9fad7415faa373a75deb7973ae22620717836605

[Michael Reuter]

Refs #3437. Touching up code formatting.

Changeset: 18cf3de985fc66995e1831f8a56fdc1c6756bd0c

[Stuart Campbell]

Looks good. It is in production on the beam line, and has also been checked by the instrument scientists.

[Stuart Campbell]

This ticket has been transferred to github issue ​4284