Create Muon CalibrateDetectors algorithm

[raquelalvarezbanos]

This issue was originally TRAC 11029

This ticket is blocks : TRAC11030

Add CalibrateDetectors algorithm to compute the phase list that will be used as input to PhaseQuad algorithm, according to code provided by muon scientists.

[raquelalvarezbanos]

@NickDraper (2015-04-27T08:10:34):
Moved to R3.5 at the R3.4 code freeze

[raquelalvarezbanos]

The algorithm should be called 'CalMuonDetectorPhases'.

It should take a reference input workspace and:

1. Remove the exponential decay
2. Fit each spectrum to f(x) = A * sin ( omega * t + phi ). Where omega is shared across spectra.
3. The output should be a table workspace with three columns (one per detector/spectrum): (detectorID, A, phi)

Additional considerations:

• Check input workspace's units, they should be microseconds
• The fitting parameter A must be positive, if it is not, add a phase of pi
• The algorithm should have two optional properties to select the start and end times. If these are not provided, the end time should be set to the last X value available, and the start time should be set to firstGoodData
• Another optional property: starting hint for the frequency. If the user does not supply one, start with sample_magn_field * 0.01355 MHz/G, where sample_magn_field can be read from the header/logs.
• Optional output workspace: workspace containing fitting results

This new algorithm can be tested doing the following:

• Take a transverse field muon dataset, ws
• Run CalMuonDetectorPhases on ws to get the phase table tab
• Run PhaseQuad on ws using tab
• The real part of the output workspace should be cos( omega * t ) and the imaginary part sin( omega * t )