Electron cyclotron heating applied to the JT-60U tokamak

K. Hoshino, T. Suzuki, A. Isayama, S. Ide, H. Takenaga, H. Kubo, T. Fujita, Y. Kamada, T. Fujii, T. Tsuda, K. Ida, S. Inagaki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The application of the electron cyclotron heating (ECH) and electron cyclotron current drive (ECCD) to the JT-60U tokamak started in 1999. Because the power deposition by the electron cyclotron wave is very localized and controllable, the application of ECH/ECCD has been very attractive for the following recent studies in the JT-60U: (a) the extension of plasma performance toward high normalized beta (ßn), (b) high bootstrap current fraction, and (c) long-pulse operation (65 s). Plasma produced in the studies aiming at advanced steady tokamak is considered to be in a kind of "self-organized state" with external input power by joule heating plus additional heating. The internal transport barrier that develops by the additional heating enhances the local bootstrap current by steep pressure gradient, and then the modified plasma current profile establishes a different confining poloidal magnetic field configuration from the initial configuration. In such experimental research in the JT-60U, the ECH contributes as an active tool for the plasma control to study the physical mechanisms of high-β magnetohydrodynamic instability, internal transport barrier, current hole, and so on. Results of the ECH/ ECCD applications in the JT-60U are briefly reviewed.

Original languageEnglish
Pages (from-to)114-129
Number of pages16
JournalFusion Science and Technology
Volume53
Issue number1
DOIs
Publication statusPublished - Jan 2008
Externally publishedYes

Fingerprint

electron cyclotron heating
Cyclotrons
cyclotrons
Heating
Electrons
Plasmas
electrons
magnetic field configurations
heating
plasma control
plasma currents
Joule heating
pressure gradients
confining
magnetohydrodynamics
high current
Magnetohydrodynamics
Pressure gradient
profiles
configurations

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Hoshino, K., Suzuki, T., Isayama, A., Ide, S., Takenaga, H., Kubo, H., ... Inagaki, S. (2008). Electron cyclotron heating applied to the JT-60U tokamak. Fusion Science and Technology, 53(1), 114-129. https://doi.org/10.13182/FST08-A1659

Electron cyclotron heating applied to the JT-60U tokamak. / Hoshino, K.; Suzuki, T.; Isayama, A.; Ide, S.; Takenaga, H.; Kubo, H.; Fujita, T.; Kamada, Y.; Fujii, T.; Tsuda, T.; Ida, K.; Inagaki, S.

In: Fusion Science and Technology, Vol. 53, No. 1, 01.2008, p. 114-129.

Research output: Contribution to journalArticle

Hoshino, K, Suzuki, T, Isayama, A, Ide, S, Takenaga, H, Kubo, H, Fujita, T, Kamada, Y, Fujii, T, Tsuda, T, Ida, K & Inagaki, S 2008, 'Electron cyclotron heating applied to the JT-60U tokamak', Fusion Science and Technology, vol. 53, no. 1, pp. 114-129. https://doi.org/10.13182/FST08-A1659
Hoshino K, Suzuki T, Isayama A, Ide S, Takenaga H, Kubo H et al. Electron cyclotron heating applied to the JT-60U tokamak. Fusion Science and Technology. 2008 Jan;53(1):114-129. https://doi.org/10.13182/FST08-A1659
Hoshino, K. ; Suzuki, T. ; Isayama, A. ; Ide, S. ; Takenaga, H. ; Kubo, H. ; Fujita, T. ; Kamada, Y. ; Fujii, T. ; Tsuda, T. ; Ida, K. ; Inagaki, S. / Electron cyclotron heating applied to the JT-60U tokamak. In: Fusion Science and Technology. 2008 ; Vol. 53, No. 1. pp. 114-129.
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