Magnetic sensorless sensing of plasma position in the superconducting tokamak HT-7

K. Nakamura, Z. S. Ji, B. Shen, P. J. Qin, S. Itoh, K. Hanada, M. Sakamoto, E. Jotaki, M. Hasegawa, A. Iyomasa, S. Kawasaki, H. Nakashima

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Abstract

Magnetic sensorlesssensing experiments of the plasma horizontal position have been carried out in the superconducting tokamak HT-7. The horizontal position is calculated from the vertical field coil current and voltage without using signals of magnetic probes placed nearby a plasma. The calculations are focused on the ripple frequency component of the power supply. There is no drift problem with the time integration of magnetic probe signals. The error of the derived plasma position is lower than 2% of the plasma minor radius.

Original languageEnglish
Pages (from-to)2459-2462
Number of pages4
JournalPlasma Science and Technology
Volume6
Issue number5
DOIs
Publication statusPublished - Oct 2004

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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