[Table of Contents]

Plasma and Fusion Research

Volume 10, 1201080 (2015)

Rapid Communications

Tomography for Local Plasma Turbulence Measurements
Akihide FUJISAWA, Yoshihiko NAGASHIMA and Shigeru INAGAKI
Research Institute for Applied Mechanics and Research Center for Plasma Turbulence, Kyushu University, Kasuga Kohen, Kasuga, Fukuoka 816-8580, Japan
(Received 8 August 2015 / Accepted 25 August 2015 / Published 28 December 2015)

Abstract

A prototype system for plasma turbulence tomography was tested in linear plasma with aiming at future application to toroidal plasma. The line-integrated plasma emission lines of ArI and ArII were measured with sufficiently high signal-to-noise ratios, and the signals were reconstructed using the maximum likelihood expectation maximization (MLEM) algorithm and parallel computing. Here, the first results for local plasma emissions and fluctuation spectra obtained with the prototype system are reported.

Keywords

plasma turbulence, turbulence tomography, MLEM, local emission fluctuation

DOI: 10.1585/pfr.10.1201080

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This paper may be cited as follows:

Akihide FUJISAWA, Yoshihiko NAGASHIMA and Shigeru INAGAKI, Plasma Fusion Res. 10, 1201080 (2015).