New H-mode regimes with small ELMs and high thermal confinement in the Joint European Torus

JET Contributors, J. Garcia, M. Ben Yaala

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

New H-mode regimes with high confinement, low core impurity accumulation, and small edge-localized mode perturbations have been obtained in magnetically confined plasmas at the Joint European Torus tokamak. Such regimes are achieved by means of optimized particle fueling conditions at high input power, current, and magnetic field, which lead to a self-organized state with a strong increase in rotation and ion temperature and a decrease in the edge density. An interplay between core and edge plasma regions leads to reduced turbulence levels and outward impurity convection. These results pave the way to an attractive alternative to the standard plasmas considered for fusion energy generation in a tokamak with a metallic wall environment such as the ones expected in ITER.

Original languageEnglish
Article number032505
JournalPhysics of Plasmas
Volume29
Issue number3
DOIs
Publication statusPublished - 2 Mar 2022

Keywords

  • gyrokinetic simulations
  • deuterium
  • fusion energy
  • plasma confinement
  • tokamaks

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