MyView2, a new visualization software tool for analysis of LHD data

Moon, Chanho; Yoshinuma, M.; Emoto, M.; Ida, K.

doi:10.1016/j.fusengdes.2016.01.076

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…In order to determine the proper cutoff positions of the Doppler reflectometer, the cutoff layer based on the cutoff plasma density is calculated by comparing the CXS with the Doppler reflectometer system data to the radial positions for the same propagation velocity formation. 36 Namely, this procedure is used to associate the reflectometer channels to radial positions through comparison with the CXS measurements. In addition, it is confirmed that the ambiguity of the cutoff layer is less than 30% in comparison with the cutoff layer based on the equilibrium density profile (which is calculated by the Thomson Scattering diagnostics).…”

Section: Observation Of the Transient Low-frequency Fluctuations A Lo...mentioning

confidence: 99%

Spatial structure of low-frequency fluctuations throughout the transition of poloidal flow velocity in edge plasmas of LHD

et al. 2019

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It is observed that a low-frequency ($2 kHz) density fluctuation is excited in a transition of the poloidal flow velocity (V h ) in the edge magnetic stochastic region of the Large Helical Device plasmas. Furthermore, it is found that the propagation velocity becomes approximately zero in the proximity of the appearance region of the low-frequency fluctuation by using the edge multichannel microwave Doppler reflectometer system. In particular, the low-frequency fluctuation is considered to be transmitted in both directions (inward and outward) away from the excitation position of the fluctuation, which behaves as the precursor of a magnetic fluctuation burst. Afterward, the edge H a signal intensity is sharply increased.

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Section: Observation Of the Transient Low-frequency Fluctuations A Lo...mentioning

confidence: 99%