Development and preliminary results of phase contrast imaging diagnostic on HL-2A

被引：3

作者：

Gong, S. B. ^{[1
,2
]}

Yu, Y. ^{[1
]}

Xu, M. ^{[2
]}

Sun, A. P. ^{[2
]}

Lan, T. ^{[1
]}

Liu, H. ^{[1
,2
]}

Zhong, W. L. ^{[2
]}

Shi, Z. B. ^{[2
]}

Wang, H. J. ^{[1
]}

Wu, Y. F. ^{[1
,2
]}

Yuan, B. D. ^{[1
,2
]}

Mao, S. F. ^{[1
]}

Ye, M. Y. ^{[1
]}

Duan, X. R. ^{[2
]}

机构：

[1] Univ Sci & Technol China, Jinzhai Rd 96, Hefei 230026, Anhui, Peoples R China

[2] Southwestern Inst Phys, POB 432, Chengdu 610041, Sichuan, Peoples R China

来源：

FUSION ENGINEERING AND DESIGN | 2019年 / 139卷

基金：

中国国家自然科学基金;

关键词：

PCI; Phase shift; Plasma density fluctuations; TURBULENCE;

D O I：

10.1016/j.fusengdes.2019.01.015

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Phase Contrast Imaging (PCI) diagnostic has been developed on HL-2 A tokamak. The chord integral density fluctuations of plasma can be obtained by measuring the phase shift of CO2 laser which has a wavelength of 10.6 mu m after passing through plasma. The 32-channel detector array enables PCI to diagnose density fluctuations with wavenumbers ranging from 2 cm(-1) to 15 cm(-1). The temporal resolution of PCI is better than 2 mu s which makes it suitable for broadband turbulence research. Calibration by the sound source confirms that PCI is able to discriminate a wide range of wavenumbers. The plasma density fluctuations measured by PCI on HL-2 A is presented for the first time. Comparison of MHD instability investigations with magnetic probe data shows the reliability of this PCI diagnostic.

引用

页码：104 / 108

页数：5

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