Analytical edge power loss at the lower hybrid resonance: ANTITER IV validation and application to ion cyclotron resonance heating systems

V. Maquet, A. Druart, A. Messiaen

Research output: Contribution to journalArticlepeer-review

Abstract

In the ion cyclotron range of frequency (ICRF), the presence of a lower hybrid (LH) resonance can appear in the edge of a tokamak plasma and lead to deleterious edge power depositions. An analytic formula for these losses is derived in the cold plasma approximation and for a slab geometry using an asymptotic approach and an analytical continuation near the LH resonance. The way to minimize these losses in a large machine like ITER is discussed. An internal verification between the power loss computed with the semi-analytical code ANTITER IV for ion cyclotron resonance heating (ICRH) and the analytic result is performed. This allows us to check the precision of the numerical integration of the singular set of cold plasma wave differential equations. The set of cold plasma equations used is general and can be applied in other parameters domain.

Original languageEnglish
Article number905870617
JournalJournal of Plasma Physics
Volume87
Issue number6
DOIs
Publication statusPublished - 15 Dec 2021

Keywords

  • ICRH
  • Key words plasma heating
  • edge modes
  • lower hybrid resonance
  • power loss

Fingerprint

Dive into the research topics of 'Analytical edge power loss at the lower hybrid resonance: ANTITER IV validation and application to ion cyclotron resonance heating systems'. Together they form a unique fingerprint.

Cite this