Ultrashort Pulse Reflectometry (USPR) diagnostic for EAST

doi:10.1088/1748-0221/17/02/C02010

	Ultrashort Pulse Reflectometry (USPR) diagnostic for EAST
	Domier, C. W.1; Zhu, Y.1; Pereira, R. J.1; Steer-Furderer, J.1; Li, X.2; Chen, R.2; Xu, G.2; Sun, P.2; Luhmann, N. C., Jr.1
刊名	JOURNAL OF INSTRUMENTATION
	2022-02-01
卷号	17
关键词	Plasma diagnostics - interferometry, spectroscopy and imaging Analogue electronic circuits Nuclear instruments and methods for hot plasma diagnostics
ISSN号	1748-0221
DOI	10.1088/1748-0221/17/02/C02010
通讯作者	Domier, C. W.(cwdomier@ucdavis.edu)
英文摘要	Ultrashort Pulse Reflectometry (USPR) is a plasma diagnostic technique involving the propagation of ultrashort duration (similar to few nsec) chirps which contain frequency components spanning large portions of the plasma density profile. Upon reflection, each frequency component reflects from a distinct density layer. The reflected wave packet is down-converted and passed through a multi-channel filter bank, with time-of-flight (TOF) measurements made on each of the filtered wave packets which are then used to reconstruct the electron density profile. Applied previously to the Sustained Spheromak Physics Experiment, UC Davis is updating this technique with higher power (>10X) sources, enhanced channel counts, and high speed customized TOF electronics. A 32 channel USPR system is being developed for the Experimental Advanced Superconducting Tokamak (EAST) device with frequencies spanning 52 to 92 GHz, reflecting from the right-hand plasma cut-off layer. The system will employ three monostatic transmit/receive horns each covering a different waveguide band. Each of the two higher frequency bands will have 8 distinct frequency channels, with the lowest frequency band, spanning 52 to 65 GHz, to have 16 receiver channels to better resolve the EAST scrape-off layer. With a pulse repetition rate of 1 MHz and simultaneous acquisition of all 32 TOF signals, electron density profiles may be obtained with time resolutions of as short as 3-6 mu sec.
资助项目	National Fusion Energy Program of China[2019FE03030000]
WOS关键词	DENSITY PROFILE
WOS研究方向	Instruments & Instrumentation
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000791423900002
资助机构	National Fusion Energy Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131519]
专题	中国科学院合肥物质科学研究院
通讯作者	Domier, C. W.
作者单位	1.Univ Calif Davis, Dept Elect & Comp Engn, 1 Shields Ave, Davis, CA 95616 USA 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Domier, C. W.,Zhu, Y.,Pereira, R. J.,et al. Ultrashort Pulse Reflectometry (USPR) diagnostic for EAST[J]. JOURNAL OF INSTRUMENTATION,2022,17.
APA	Domier, C. W..,Zhu, Y..,Pereira, R. J..,Steer-Furderer, J..,Li, X..,...&Luhmann, N. C., Jr..(2022).Ultrashort Pulse Reflectometry (USPR) diagnostic for EAST.JOURNAL OF INSTRUMENTATION,17.
MLA	Domier, C. W.,et al."Ultrashort Pulse Reflectometry (USPR) diagnostic for EAST".JOURNAL OF INSTRUMENTATION 17(2022).