Plasma and Fusion Research

Volume 4, 050 (2009)

Rapid Communications

Initial Results of X-ray Imaging and Energy Spectrum Measurements of Hot Electron Plasmas in RT-1
Haruhiko SAITOH, Yoshihisa YANO, Tatsunori MIZUSHIMA, Junji MORIKAWA and Zensho YOSHIDA
Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
(Received 19 August 2009 / Accepted 28 September 2009 / Published 5 November 2009)

Abstract

To acquire spatial profiles and energy spectra of hot electrons in ECH plasmas, we installed a soft x-ray pinhole camera in RT-1. In this publication, we compare the results of an initial experiment using a mechanically supported dipole field coil with the measurements of plasma pressure for different microwave frequencies. The results indicate that the coil support structure was the major loss channel for the high temperature electrons.

Keywords

internal coil device, magnetospheric configuration, high-beta plasma, x-ray camera

DOI: 10.1585/pfr.4.050

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This paper may be cited as follows:

Haruhiko SAITOH, Yoshihisa YANO, Tatsunori MIZUSHIMA, Junji MORIKAWA and Zensho YOSHIDA, Plasma Fusion Res. 4, 050 (2009).