Polarizer development for electron cyclotron resonance heating systems in a HL-2A tokamak
Creators
- 1. Southwestern Institute of Physics, Chengdu (China)
- 2. Kyoto University, Institute of Advanced Energy, Uji, Kyoto (Japan)
Description
The paper presents the development of sinusoidally grooved polarizes for electron cyclotron resonance heating (ECRH) systems in the HL-2A tokamak. The polarizer groove shape was designed according to a sinusoidal function with a groove period p=0.48λ and depth d=0.5λ. Here, λ is the wavelength, whose value is 4.41 mm. The low-power test results of the polarizer performance are in agreement with a numerical calculation based on the integral method developed in vector theories of diffraction gratings. High-power experiments reveal that 340 kW high-power EC waves can be transmitted through the corrugated waveguide line with the polarizer assembled in a miter bend at atmospheric pressure. With the polarizer, ECRH/electron cyclotron current drive (ECCD) experiments in the extraordinary mode have been successful in a HL-2A tokamak. (author)
Additional details
Publishing Information
- Journal Title
- Plasma and Fusion Research
- Journal Volume
- 3
- Journal Page Range
- p. 020.1-020.2
- ISSN
- 1880-6821
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 39089472
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- COMPUTERIZED SIMULATION; DEPTH; ECR CURRENT DRIVE; ECR HEATING; HL-2A TOKAMAK; MICROWAVE RADIATION; POLARIZATION; POWER TRANSMISSION LINES; SHAPE; WAVEGUIDES; WAVELENGTHS
- Descriptors DEC
- CLOSED PLASMA DEVICES; DIMENSIONS; ELECTROMAGNETIC RADIATION; HEATING; HIGH-FREQUENCY HEATING; NON-INDUCTIVE CURRENT DRIVE; PLASMA HEATING; RADIATIONS; SIMULATION; THERMONUCLEAR DEVICES; TOKAMAK DEVICES