A simulation study on inductive ITB control in reversed shear tokamak discharges

Y. Nakamura, K. Tobita, A. Fukuyama, N. Takei, Y. Takase, T. Ozeki, S. C. Jardin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A self-consistent simulation, including a model for improved core energy confinement, demonstrates that externally applied, inductive current perturbations can be used to control both the location and strength of internal transport barriers (ITBs) in a fully non-inductive tokamak discharge. We find that ITB structures formed with broad non-inductive current sources such as LHCD are more readily controlled than those formed by localized sources such as ECCD. Through this external control of the magnetic shear profile, we can maintain the ITB strength which is otherwise prone to deteriorate when the bootstrap current increases. The inductive current perturbation, which can be implemented by a weak Ohmic power, offers steady-state, advanced tokamak reactors an external means of efficient ITB control for regulating the fusion-burn net output and spatial profile.

Original languageEnglish
Article numberS10
Pages (from-to)S645-S651
JournalNuclear Fusion
Volume46
Issue number8
DOIs
Publication statusPublished - 2006 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'A simulation study on inductive ITB control in reversed shear tokamak discharges'. Together they form a unique fingerprint.

  • Cite this

    Nakamura, Y., Tobita, K., Fukuyama, A., Takei, N., Takase, Y., Ozeki, T., & Jardin, S. C. (2006). A simulation study on inductive ITB control in reversed shear tokamak discharges. Nuclear Fusion, 46(8), S645-S651. [S10]. https://doi.org/10.1088/0029-5515/46/8/S10