Plasma and Fusion Research

Volume 1, 011 (2006)

Rapid Communications

New Calibration Method of Magnetic Measurements Based on the MHD Equilibrium with the Ergodic Region
Taiki YAMAGUCHI1), Kiyomasa WATANABE1,2), Satoru SAKAKIBARA2), Yasuhiro SUZUKI2), Yoshiro NARUSHIMA1,2), Kazumichi NARIHARA2), Tokihiko TOKUZAWA1,2), Kenji TANAKA2), Ichihiro YAMADA2), Hiroshi YAMADA1,2), Kazuo KAWAHATA1,2) and LHD Experimental Group2)
1)
Department of Fusion Science, The Graduate University for Advanced Studies
2)
National Institute for Fusion Science
(Received 19 December 2005 / Accepted 9 February 2006 / Published 2 March 2006)

Abstract

A new calibration method for evaluating equilibrium parameters such as the beta value and its radial profile is introduced. The method is based on a real-coordinate equilibrium code (HINT), which does not assume nested flux surfaces, and on a signal-analysis code (JDIA), which evaluates the flux of magnetic measurements from the result of the HINT. Results of the present work are closer to experimental data than results of a conventional method which assumes nested flux surfaces.

Keywords

magnetic measurement, MHD equilibrium reconstruction, HINT, JDIA, LHD

DOI: 10.1585/pfr.1.011

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This paper may be cited as follows:

Taiki YAMAGUCHI, Kiyomasa WATANABE, Satoru SAKAKIBARA, Yasuhiro SUZUKI, Yoshiro NARUSHIMA, Kazumichi NARIHARA, Tokihiko TOKUZAWA, Kenji TANAKA, Ichihiro YAMADA, Hiroshi YAMADA, Kazuo KAWAHATA and LHD Experimental Group, Plasma Fusion Res. 1, 011 (2006).