Published September 1, 2020 | Version v1
Journal article Metadata-only

Critical velocity shear flow for triggering L-H transition and its parametric dependence in the HL-2A tokamak

Creators

  • 1. Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China)
  • 2. CEA, IRFM, F-13108 Saint-Paul-Lez-Durance (France)

Description

The dynamics of shear flows and turbulence in the pedestal region during the L-H transition have been studied in the HL-2A tokamak. It has been shown that ion diamagnetic shear flow plays a key role in triggering the L-H transition. A critical E × B velocity shear has been found for the L-H transition. Statistical results indicate that the velocity shear threshold is independent of the plasma density and the total heating power. (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/1741-4326/ab9883

Additional details

Identifiers

DOI
10.1088/1741-4326/ab9883;

Publishing Information

Journal Title
Nuclear Fusion
Journal Volume
60
Journal Issue
9
Journal Page Range
[10 p.]
ISSN
0029-5515
CODEN
NUFUAU

INIS

Country of Publication
International Atomic Energy Agency (IAEA)
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
52059126
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
CRITICAL VELOCITY; HEATING; HL-2A TOKAMAK; PLASMA DENSITY; SHEAR; TURBULENCE
Descriptors DEC
CLOSED PLASMA DEVICES; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; VELOCITY