Implementation and data processing of a five-channel microwave interferometer with high temporal resolution and low noise on Sino-UNIted Spherical Tokamak

doi:10.1063/5.0043667

	Implementation and data processing of a five-channel microwave interferometer with high temporal resolution and low noise on Sino-UNIted Spherical Tokamak
	Su, Pengjuan 2; Zhong, Heng 2; Tan, Yi 2; Gao, Zhe 2; Zai, Yingqi 2; Liu, Haiqing 1; Zeng, Long 1; Zhu, Xiang 3; Ling, Bili 1; Cheng, Zhengbo 2
刊名	REVIEW OF SCIENTIFIC INSTRUMENTS
	2021-04-01
卷号	92
ISSN号	0034-6748
DOI	10.1063/5.0043667
通讯作者	Su, Pengjuan(spj18@mails.tsimghua.edu.cn)
英文摘要	A five-channel microwave interferometer with high temporal resolution and high phase resolution has been developed for measuring electron density profiles and fluctuations on the Sino-UNIted Spherical Tokamak. A correction algorithm, based on the low signal amplitude detection, is proposed to eliminate the fringe jump errors. The correction algorithm achieves an accuracy of 92%. The density profile is reconstructed through the Park-matrix method, with the geometry of magnetic surfaces calculated by the equilibrium fitting. The reconstructed density profiles for discharges with supersonic molecular beam injection are in good agreement with the results of another 94 GHz single-channel horizontal interferometer and the Langmuir probes. The temporal resolution of the system is 0.5 mu s and the line-integrated electron density resolution is 1 x 10(15) m(-2), which benefits from the single sideband modulation technique. Therefore, the multichannel interferometer system is capable of studying the details of the high-frequency (up to 200 kHz) density fluctuation such as that in the minor disruption event.
资助项目	NSFC[11827810] ; NSFC[11875177] ; IAEA CRP[22733] ; Science Challenge Project[TZ2016005]
WOS研究方向	Instruments & Instrumentation ; Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000639895300004
资助机构	NSFC ; IAEA CRP ; Science Challenge Project
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/122023]
专题	中国科学院合肥物质科学研究院
通讯作者	Su, Pengjuan
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China 3.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Su, Pengjuan,Zhong, Heng,Tan, Yi,et al. Implementation and data processing of a five-channel microwave interferometer with high temporal resolution and low noise on Sino-UNIted Spherical Tokamak[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2021,92.
APA	Su, Pengjuan.,Zhong, Heng.,Tan, Yi.,Gao, Zhe.,Zai, Yingqi.,...&Wang, Binbin.(2021).Implementation and data processing of a five-channel microwave interferometer with high temporal resolution and low noise on Sino-UNIted Spherical Tokamak.REVIEW OF SCIENTIFIC INSTRUMENTS,92.
MLA	Su, Pengjuan,et al."Implementation and data processing of a five-channel microwave interferometer with high temporal resolution and low noise on Sino-UNIted Spherical Tokamak".REVIEW OF SCIENTIFIC INSTRUMENTS 92(2021).