Returns the relative efficiency of the forward detector group compared to the backward detector group. If Alpha is larger than 1 more counts has been collected in the forward group.
This algorithm leave the input workspace unchanged. To group detectors in a workspace use algm-MuonGroupDetectors.
Example - Calculating Alpha of a MUSR run:
ExMUSRAlpha
loaded = LoadMuonNexus('MUSR0015189.nxs', AutoGroup=True)
first_period = loaded[0].getItem(0)
- alpha = AlphaCalc(first_period,
FirstGoodValue=0.55, LastGoodValue=12.0)
print 'Alpha value of the first period: {:.3f}'.format(alpha)
Output:
ExMUSRAlpha
Alpha value of the first period: 1.339