Initial operation and data processing on a system for real-time evaluation of Thomson scattering signals on the Large Helical Device

Hammond, K.C. ; Laggner, F.M. ; Diallo, A. ; Doskoczynski, S. ; Freeman, C. ; Funaba, H.; Gates, D.A. ; Rozenblat, Roman ; Tchilinguirian, G. ; Xing, Zichuan ; Yamada, Ichihiro ; Yasuhara, Ryo ; Zimmer, G ; Kolemen, E.
Issue date: 2021
Rights:
Creative Commons Attribution 4.0 International (CC BY)
Cite as:
Hammond, K.C., Laggner, F.M., Diallo, A., Doskoczynski, S., Freeman, C., Funaba, H., Gates, D.A., Rozenblat, Roman, Tchilinguirian, G., Xing, Zichuan, Yamada, Ichihiro, Yasuhara, Ryo, Zimmer, G, & Kolemen, E. (2021). Initial operation and data processing on a system for real-time evaluation of Thomson scattering signals on the Large Helical Device [Data set]. Princeton Plasma Physics Laboratory, Princeton University. https://doi.org/10.11578/1814942
@electronic{hammond_kc_2021,
  author      = {Hammond, K.C. and
                Laggner, F.M. and
                Diallo, A. and
                Doskoczynski, S. and
                Freeman, C. and
                Funaba, H. and
                Gates, D.A. and
                Rozenblat, Roman and
                Tchilinguirian, G. and
                Xing, Zichuan and
                Yamada, Ichihiro and
                Yasuhara, Ryo and
                Zimmer, G and
                Kolemen, E.},
  title       = {{Initial operation and data processing on
                 a system for real-time evaluation of Th
                omson scattering signals on the Large He
                lical Device}},
  publisher   = {{Princeton Plasma Physics Laboratory, Pri
                nceton University}},
  year        = 2021,
  url         = {https://doi.org/10.11578/1814942}
}
Description:

A scalable system for real-time analysis of electron temperature and density based on signals from the Thomson scattering diagnostic, initially developed for and installed on the NSTX-U experiment, was recently adapted for the Large Helical Device (LHD) and operated for the first time during plasma discharges. During its initial operation run, it routinely recorded and processed signals for four spatial points at the laser repetition rate of 30 Hz, well within the system's rated capability for 60 Hz. We present examples of data collected from this initial run and describe subsequent adaptations to the analysis code to improve the fidelity of the temperature calculations. Please consult the file README.txt for a description of the archive contents.

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