Pre-Stub Tuner for Reduction of Radio-Frequency Voltage Along Transmission Line in EAST-ICRF System

doi:10.13182/FST15-214

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院等离子体物理研究所

	Pre-Stub Tuner for Reduction of Radio-Frequency Voltage Along Transmission Line in EAST-ICRF System
	Chen, Gen; Mao, Yuzhou; Yuan, Shuai; Zhang, Kai; Zhao, Yanping
刊名	FUSION SCIENCE AND TECHNOLOGY
	2017-02-01
卷号	71 期号:2 页码:150-161
关键词	Transmission Line Rf Voltage East
DOI	10.13182/FST15-214
文献子类	Article
英文摘要	The ion cyclotron range of frequency (ICRF) heating system of the Experimental Advanced Superconducting Tokamak (EAST) is characterized by high radio-frequency (RF) power up to 12 MW and wide frequency range over 25 to 70 MHz. A high RF power transmission system composed of a liquid impedance matching device, ceramic feedthrough, decoupler, and ICRF heating antenna with four straps has been in operation for some years. In a high-power ICRF experiment, one issue that needs to be solved is the high RF voltage on the coaxial transmission line between the ICRF antenna and the impedance matching device, which is caused by low antenna loading resistance compared to the characteristic impedance of the transmission line. A stub tuner is employed to reduce the RF voltage in the EAST ICRF power transmission system. Two methods to reduce RF voltage using short-circuited and open-circuited stub tuners are introduced in detail. The optimized position and length of the stub tuner are analyzed and calculated to achieve a smaller voltage reduction ratio (VRR) on the transmission line. The test with the stub tuner to reduce the RF voltage of the transmission line is carried out, and a RF VRR of similar to 0.57 is achieved. The RF voltage on the transmission line is significantly reduced, and the capability of the transmission power is obviously improved. Ohmic losses caused by the surface resistance of the conductor of the coaxial transmission line are also decreased, and the probability of breakdown within the transmission line is reduced under high RF power operation.
WOS关键词	LONG-PULSE OPERATION ; HEATING-SYSTEM ; DESIGN ; ANTENNA
WOS研究方向	Nuclear Science & Technology
语种	英语
WOS记录号	WOS:000398206900003
资助机构	National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Magnetic Confinement Fusion Science Program(2015gb101001) ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; National Natural Science Foundation of China(11575237 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375235 ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236) ; 11375236)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/31752]
专题	合肥物质科学研究院_中科院等离子体物理研究所
作者单位	Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Chen, Gen,Mao, Yuzhou,Yuan, Shuai,et al. Pre-Stub Tuner for Reduction of Radio-Frequency Voltage Along Transmission Line in EAST-ICRF System[J]. FUSION SCIENCE AND TECHNOLOGY,2017,71(2):150-161.
APA	Chen, Gen,Mao, Yuzhou,Yuan, Shuai,Zhang, Kai,&Zhao, Yanping.(2017).Pre-Stub Tuner for Reduction of Radio-Frequency Voltage Along Transmission Line in EAST-ICRF System.FUSION SCIENCE AND TECHNOLOGY,71(2),150-161.
MLA	Chen, Gen,et al."Pre-Stub Tuner for Reduction of Radio-Frequency Voltage Along Transmission Line in EAST-ICRF System".FUSION SCIENCE AND TECHNOLOGY 71.2(2017):150-161.