RF Central Solenoid Operation for Plasma Production and Current Drive in TST-2

Akira EJIRI; Yuichi TAKASE; Naoto TSUJII; Takahiro SHINYA; Satoru YAJIMA; Masateru SONEHARA; Hirokazu FURUI; Hiro TOGASHI; Hiroto HOMMA; Kenta NAKAMURA; Toshihiro TAKEUCHI; Yusuke YOSHIDA; Wataru TAKAHASHI; Kazuya TOIDA; Hibiki YAMAZAKI

doi:10.1585/pfr.11.1202004

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RF Central Solenoid Operation for Plasma Production and Current Drive in TST-2

Akira EJIRI, Yuichi TAKASE, Naoto TSUJII, Takahiro SHINYA, Satoru YAJIMA, Masateru SONEHARA, Hirokazu FURUI, Hiro TOGASHI, Hiroto HOMMA, Kenta NAKAMURA, Toshihiro TAKEUCHI, Yusuke YOSHIDA, Wataru TAKAHASHI, Kazuya TOIDA, Hibiki YAMAZAKI

Author information

Akira EJIRI
Graduate School of Frontier Sciences, The University of Tokyo
Yuichi TAKASE
Graduate School of Frontier Sciences, The University of Tokyo
Naoto TSUJII
Graduate School of Frontier Sciences, The University of Tokyo
Takahiro SHINYA
Graduate School of Frontier Sciences, The University of Tokyo
Satoru YAJIMA
Graduate School of Frontier Sciences, The University of Tokyo
Masateru SONEHARA
Graduate School of Frontier Sciences, The University of Tokyo
Hirokazu FURUI
Graduate School of Frontier Sciences, The University of Tokyo
Hiro TOGASHI
Graduate School of Frontier Sciences, The University of Tokyo
Hiroto HOMMA
Graduate School of Frontier Sciences, The University of Tokyo
Kenta NAKAMURA
Graduate School of Frontier Sciences, The University of Tokyo
Toshihiro TAKEUCHI
Graduate School of Frontier Sciences, The University of Tokyo
Yusuke YOSHIDA
Graduate School of Frontier Sciences, The University of Tokyo
Wataru TAKAHASHI
Graduate School of Frontier Sciences, The University of Tokyo
Kazuya TOIDA
Graduate School of Frontier Sciences, The University of Tokyo
Hibiki YAMAZAKI
Graduate School of Frontier Sciences, The University of Tokyo

Keywords: AC loop voltage operation, spherical tokamak, plasma production, current drive, flux swing

JOURNAL FREE ACCESS

2016 Volume 11 Pages 1202004

DOI https://doi.org/10.1585/pfr.11.1202004

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Abstract

The RF central solenoid operation is a method for generating an inductive RF electric field in a device by which plasma can be produced and ohmically heated. Furthermore, it may drive the DC current via heating. Experiments were carried out in TST-2 to clarify this potential under a limited amount of flux swing (±0.5 mVs) of the central solenoid. It was found that it can produce plasma and drive the DC current up to approximately 0.6 kA on average when an external equilibrium field is applied. In addition, the DC current can be ramped up when the inductive RF field is applied to ECW power-sustained plasmas.

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