multidetector xrf fitting

• rename BatchFitTask to SingleDetectorFit
• new task: DeadtimeCorrection: deadtime correction of spectra
• new task: SumDetectors: deadtime correction of spectra and sum them
• new task: MultiDetectorFit (like SingleDetectorFit but one configuration file per detectors): fit spectra separately followed by deadtime correction and summing/averaging of fit results

Deadtime correction of spectra

signal(nscanpoints, nmca) / output_live_time (nscanpoints) * reference_time

Deadtime correction of fit results:

signal(nscanpoints) / output_live_time (nscanpoints) * reference_time

Workflows

Three different examples of workflows with the tasks above

Workflow 1: 1 scan, 1 detector

1. SingleDetectorFit:
   • inputs: spectra(nscanpoints, nmca), cfg(scalar)
   • outputs: fitresults(nscanpoints, nparams)
2. DeadtimeCorrection:
   • inputs: fitresults(nscanpoints, nparams), output_live_time(nscanpoints), reference_time(scalar)
   • outputs: corresults(nscanpoints, nparams)

Workflow 2: 1 scan, N detectors

1. SumDetectors:
   • inputs: spectra(nscanpoints, nmca, N), output_live_time(nscanpoints, N), reference_time(scalar)
   • outputs: spectra(nscanpoints, nmca)
2. SingleDetectorFit: see above

Workflow 3: 1 scan, N detectors

1. MultiDetectorFit:
   • inputs: spectra(nscanpoints, nmca, N), configs(N), output_live_time(nscanpoints, N), reference_time(scalar)
   • outputs: corresults(nscanpoints, nparams)

Notes:

• output_live_time should have a units attribute in the Bliss file. If not assume it is in seconds. The reference_time should always be in seconds.