Particle source and radial electric field shear as the factors affecting the LH-transition possibility and dynamics in a tokamak

A. A. Belokurov*, G. Abdullina, L. G. Askinazi, V. V. Bulanin, L. Chone, A. D. Gurchenko, E. Z. Gusakov, T. P. Kiviniemi, V. A. Kornev, S. Krikunov, D. Kouprienko, S. Lashkul, S. Lebedev, S. Leerink, P. Niskala, A. Petrov, D. Razumenko, A. S. Tukachinsky, A. Yu Yashin, N. A. Zhubr

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Numerous theoretical and experimental studies have proved the important role of radial electric field inhomogeneity, or shear, in LH-transition initiation, and established heating power threshold for transition, although some experiments provide the observation of LH-transition dependency on particle source. It is necessary to apply a concerted approach to describe LH-transition initiation possibility and dynamics, considering E-r shear, particle source and turbulence properties as the main factors responsible for LH-transition initiation.

Original languageEnglish
Article number115604
Number of pages10
JournalPhysica Scripta
Volume95
Issue number11
DOIs
Publication statusPublished - Nov 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • plasma
  • tokamak
  • LH-transition
  • GAM
  • pellet injection
  • radial electric field
  • GEODESIC ACOUSTIC MODE
  • H-MODE
  • ENERGY CONFINEMENT
  • TRANSPORT
  • TURBULENCE
  • SUPPRESSION
  • ROTATION
  • PLASMA

Cite this