Electromagnetic particle-in-cell simulations of a lower hybrid grill

Karin Rantamäki (Corresponding Author), Timo Pättikangas, Seppo Karttunen, K. Alm-Lytz, J. Verboncoeur, P. Mardahl

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

The coupling of lower hybrid waves to the plasma is a crucial issue for efficient current drive in tokamaks. In this work, the coupling problem is attacked with a new tool in this context: an electromagnetic particle-in-cell (PIC) code, XOOPIC (Verboncoeur J P et al 1995 Comp. Phys. Comm. 87 199). A model for a grill with 32 waveguides is constructed using perfectly conducting walls. The wave propagation in the waveguides and the coupling to plasma is followed. The wave-plasma interaction is studied and the evolution of the launched spectrum is resolved in the near-field of the grill. The reflection coefficients in the individual waveguides are determined.
Original languageEnglish
Pages (from-to)1349-1362
JournalPlasma Physics and Controlled Fusion
Volume44
Issue number7
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Keywords

  • JET
  • plasma
  • fusion energy
  • fusion reactors
  • tokamak
  • lower hybrid current drive
  • lower hybrid grill
  • lower hybrid waves

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