A data analysis and visualization routine for a portable Thomson scattering diagnostic and optical emission spectroscopy system*

A portable diagnostic package (PDP) equipped for laser Thomson scattering (TS) and optical emission spectroscopy (OES) has been designed and constructed at Oak Ridge National Laboratory, aiming to simultaneously measure temperature and number density of electrons and ions in fusion-relevant plasma devices. The PDP receives TS and plasma emission light via a 11-by-3 optical fiber array, which provides 11 lines-of-sight for TS and OES each. An automated data analysis and visualization routine has been developed to process PDP's 11 lines-of-sight of TS and OES measurements. The analytic procedure that calculates temperature and number density of electrons includes intensity calibration for the spectrometers and detectors, different background subtraction methods for TS and OES spectra, baseline correction for OES spectra and a curve fitting method for OES spectra. Example data from recent experiments will be shown.