首页|Electron density measurement by the three boundary channels of HCOOH laser interferometer on the HL-3 tokamak

Electron density measurement by the three boundary channels of HCOOH laser interferometer on the HL-3 tokamak

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Far-infrared(FIR)interferometer is widely used to measure the electron density in the magnetically confined fusion plasma devices.A new FIR laser interferometer with a total of 13 channels(8 horizontal channels and 5 oblique channels)is under development on the HL-3 tokamak by using the formic-acid laser(HCOOH,f=694 GHz).In order to investigate the boundary electron density activity during the divertor discharge,three horizontal interferometry channels located at Z=-97,-76,76.5 cm have been successfully developed on HL-3 in 2023,and put into operation in recent experimental campaign,with a time resolution of＜1.0 μs and line-integrated electron density resolution of～7.0 × 1016 m-2.This paper mainly focuses on the optical design of the three-channel interferometry system,as well as optical elements and recent experimental result on HL-3.

electron densityinterferometerHL-3

牟俊任、李永高、李远、王再宏、丁宝钢、王浩西、易江、石中兵

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Southwestern Institute of Physics,Chengdu 610041,People's Republic of China

East China Normal University,Shanghai 200241,People's Republic of China

National Magnetic Confinement Fusion Science Program of ChinaNational Magnetic Confinement Fusion Science Program of ChinaNational Magnetic Confinement Fusion Science Program of China四川省科技厅项目

2019YFE030200042018YFE03041022019YFE030200022020YJ0463

2024

10.1088/2058-6272/ad127a

等离子体科学和技术(英文版)
中国科学院合肥物质科学研究所 中国力学学会

等离子体科学和技术(英文版)

EI
影响因子：0.297
ISSN：1009-0630
年,卷(期)：2024.26(3)
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