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First Experimental Monitoring of the Three-Dimensional Structure of Toroidal Plasmas Using Multiple Soft X-Ray Imaging Techniques

Shinichiro INAGAKI, Akio SANPEI, Takeru INOUE, Natsuki KOJIMA, Ryota TAKAOKA, Takahiro SASAKI and Haruhiko HIMURA

Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo Ward, Kyoto 606-8585, Japan

(Received 9 January 2023 / Accepted 10 April 2023 / Published 14 June 2023)

Abstract

In this study, a previously proposed three-dimensional (3D) tomography method using a multiple-pinhole camera is applied experimentally to detect 3D structures in reversed-field pinch plasmas. The 3D structure of the toroidal plasma was successfully reconstructed and found to be consistent with magnetic field measurements at the plasma's edge. The results also indicate that toroidal mode number estimation may be possible using the images from the multiple-pinhole camera.

Copyright (c) 2023 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

imaging measurement, soft x-ray, three-dimensional diagnostics, reversed-field pinch, asymmetric toroidal plasma

DOI: 10.1585/pfr.18.2402046

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