Published January 2005 | Version v1
Journal article Metadata-only

Effects of the trapping effect on LHCD in tokamak

Creators

  • 1. Southwestern Inst. of Physics, Chengdu (China)
  • 2. University of Electronic Science and Technology of China, Chengdu (China). School of Optoelectronic Information

Description

A Fokker-Planck study is carried out for tokamak lower hybrid current drive (LHCD) by considering the wave absorption in the presence of trapping effect situation. This Fokker-Planck code is developed based on FASTFP, and is suitable for various auxiliary heating and current drive situations. The energy loss mechanism through anomalous transport is modeled by using a suitable loss term. In the heating phase, the electron distribution deviates clearly from the Maxwellian, and this result is in nonlinear absorption characteristics. As an electrostatic force, the lower hybrid wave makes the trapped electrons untrapped, and the wave losses its energy, which cuts down the LHCD efficiency 30%. (authors)

Additional details

Publishing Information

Journal Title
Acta Physica Sinica
Journal Volume
54
Journal Issue
1
Journal Page Range
p. 180-185
ISSN
1000-3290

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
37040977
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
ENERGY LOSSES; F CODES; FOKKER-PLANCK EQUATION; LOWER HYBRID CURRENT DRIVE; TOKAMAK DEVICES; TRAPPED ELECTRONS; TRAPPING
Descriptors DEC
CLOSED PLASMA DEVICES; COMPUTER CODES; DIFFERENTIAL EQUATIONS; ELECTRONS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; LEPTONS; LOSSES; NON-INDUCTIVE CURRENT DRIVE; PARTIAL DIFFERENTIAL EQUATIONS; THERMONUCLEAR DEVICES

Optional Information

Notes
5 figs., 2 tabs., 9 refs.