Poloidal inhomogeneity of turbulence in the FT-2 tokamak by radial correlation Doppler reflectometry and gyrokinetic modelling

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • A. B. Altukhov
  • A. D. Gurchenko
  • E. Z. Gusakov
  • L. A. Esipov
  • M. A. Irzak
  • M. Yu Kantor
  • D. V. Kouprienko
  • S. I. Lashkul
  • Susan Leerink

  • Paavo Niskala

  • A. Yu Stepanov
  • N. V. Teplova

Research units

  • Ioffe Institute

Abstract

The poloidal dependence of the drift-wave turbulence characteristics is investigated at the FT-2 tokamak by radial correlation Doppler reflectometry (RCDR) technique and using the full distribution function global gyrokinetic modelling by ELMFIRE code. The poloidal variation of the turbulence radial correlation length from 0.2-0.55 cm is demonstrated both by measurement and computation. The turbulence correlation length rapidly decreases from the top of the poloidal cross-section to the high field side and then steadily grows in the poloidal direction. A well-pronounced excess of the turbulence radial correlation length in deuterium over its value in hydrogen discharges is demonstrated.

Details

Original languageEnglish
Article number105004
Pages (from-to)1-8
JournalPlasma Physics and Controlled Fusion
Volume58
Issue number10
Publication statusPublished - 31 Aug 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • correlation length, plasma, radial correlation reflectometry, turbulence

ID: 9029269