suter_aandClaude Opus 5
462c4623be
Since the Red/Green mode handling was added for NeXus HDF5 IDF V2, the histogram numbers of the routed histograms carry the period offset, i.e. histoNo = period*10000 + histo. PRunBase::DeadTimeCorrection() was still addressing the dead time parameter vector with 'histoNo-1', hence for any period > 0 it read far beyond the end of the vector. The garbage picked up there scaled the counts, so every invocation of musrfit gave a different (sometimes nan) result for the affected run blocks. The dead time parameters are stored contiguously, period-by-period, and therefore need to be addressed as period*noOfHistosPerPeriod + histo - 1. Introduce PERIOD_HISTO_OFFSET for the period encoding, keep the number of histos per period in PRawRunData, and add PRawRunData::GetDeadTimeParam(histoNo) which does the mapping and guards against out-of-range access. Cross-checked against the HDF4 IDF V1 twin of the same run, where the two periods are flattened into histos 1-192: both readers now yield bit-identical chisq, with and without dead time correction. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
musrfit - muSR and beta-NMR data analysis package
Contents
This is a data analysis package to analyze time differential muSR and beta-NMR data. Currently it allows the following:
- set up most commonly used fitting functions for muSR and beta-NMR
- fit data, including global fits
- show the fit results and the residuals
- show the Fourier transform of the data
- easily extract the fit parameters and import in other programs (gnuplot, qtiplot/origin, ...)
- generate input fitting files for follow-up runs
- generate global input fitting files based on a single run template
- implement more sophisticated user functions (e.g. GL vortex lattice, Meissner screening including low-energy muon stopping profiles)
Currently supported platforms:
- Linux
- Mac OS X
- Windows 10 1809 or newer - current state is for the commited ones
- Web based implementation - http://musruser.psi.ch/cgi-bin/musrfit.cgi
Documentation
For a more exhaustive user documentation see:
https://lmu.pages.psi.ch/musrfit-docu/index.html
Contacts
For the beta-NMR related parts, please contact Zaher Salman zaher.salman@psi.ch