Influence of eddy-current on inside magnetic field distribution in vacuum electronic devices and corresponding suppression methods

Ma Guowu; Hu Linlin; Song Rui; Sun Dimin; Chen Hongbin; Meng Fanbao

doi:10.11884/HPLPB201729.170096

Volume 29 Issue 11

Nov. 2017

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > High Power Laser and Particle Beams > 2017 > 29(11): 113101

Cui Bo, He Shukai, Liu Hongjie, et al. Neutron spectrum measurement for picosecond laser pulse neutron source experiment with liquid scintillator detector[J]. High Power Laser and Particle Beams, 2016, 28: 124005. doi: 10.11884/HPLPB201628.160414

Citation:

Ma Guowu, Hu Linlin, Song Rui, et al. Influence of eddy-current on inside magnetic field distribution in vacuum electronic devices and corresponding suppression methods[J]. High Power Laser and Particle Beams, 2017, 29: 113101. doi: 10.11884/HPLPB201729.170096

Citation:

PDF( 3562 KB)

Influence of eddy-current on inside magnetic field distribution in vacuum electronic devices and corresponding suppression methods

doi: 10.11884/HPLPB201729.170096

1.
Institute of Applied Electronics,CAEP,Mianyang 621900,China

Received Date: 2017-03-27
Rev Recd Date: 2017-06-13
Publish Date: 2017-11-15

Abstract

Abstract

Excitation of magnetic field with short pulse current coils is one of the important technological approaches for achieving ultra-strong magnetic field in high frequency vacuum electronic devices, in which eddy-current would be excited at the same time and influence the distribution of magnetic field inside the tube. Impact of eddy-current on the distribution of short pulse magnetic field is studied in this paper, the effects of pulse duration, conductivity and thickness of the metallic structure on eddy-current are analyzed. The results show that the influence of eddy current on the internal magnetic field increases with the decrease of the pulse width of the coil current, the increase of the conductivity and the thickness of the metal, which leads to failure of effective excitation of magnetic field inside the tube. Two methods for suppressing eddy current are proposed including electroplated coating of good conductor on high-resistivity metallic material and longitudinal slotting, the calculation results show that the two methods could effectively depress the influence of eddy-current on the distribution of magnetic field in the device.
- eddy-current,
- vacuum electronic devices,
- magnetic field with short pulse duration

FullText(HTML)

References(0)

References

Relative Articles

[1]	Fu Yingjie, Dong Luokang, Qin Shenyi, He Mengbing, Ye Mingtian, Wang Zhen, Li Zhenghong. Operating characteristics of electrically triggered vacuum surface flashover switch[J]. High Power Laser and Particle Beams, 2024, 36(11): 115003. doi: 10.11884/HPLPB202436.240325
[2]	Ye Mingtian, Wang Zhen, Long Tianjun, Zhou Lin, Li Zhenghong. Primary research on the operating characteristics of electrically triggered vacuum surface flashover switch[J]. High Power Laser and Particle Beams, 2022, 34(9): 095009. doi: 10.11884/HPLPB202234.210445
[3]	Yang Hanwu, Xun Tao, Gao Jingming, Zhang Zicheng. Design of a vacuum interface of a microsecond timescale HPM diode with guiding magnetic field[J]. High Power Laser and Particle Beams, 2022, 34(9): 095002. doi: 10.11884/HPLPB202234.210472
[4]	Gu Liang, Tan Qingyue, Zhang Tengyi, Shuai Xiaoxiao, Wang Shuai. Eddy current analysis and suppression measures of pulsed magnetic field of electron beam[J]. High Power Laser and Particle Beams, 2019, 31(1): 015004. doi: 10.11884/HPLPB201931.180309
[5]	Liu Yanwen, Lu Yuxin, Tian Hong, Zhu Hong, Meng Mingfeng, Gu Bing. Temperature measurement of cathodes used in microwave vacuum electron devices[J]. High Power Laser and Particle Beams, 2016, 28(07): 073003. doi: 10.11884/HPLPB201628.073003
[6]	Li Shuanghong, Li Junjian, Liang Ning. Lifetime test of organic light-emitting device in high vacuum and usual package[J]. High Power Laser and Particle Beams, 2012, 24(07): 1608-1610.
[7]	Li Zhiwei, Lin Fuchang, Li Hua, Chen Yaohong, Lü Fei, Zhang Miao, Liu De. Pulsed capacitors in vacuum[J]. High Power Laser and Particle Beams, 2012, 24(05): 1229-1233. doi: 10.3788/HPLPB20122405.1229
[8]	Chen Jin, Liu Xiaolong, Yan Youjie, Li Penghui, Jiang Tingyong. Compact short electromagenetic pulse sensor[J]. High Power Laser and Particle Beams, 2012, 24(12): 2797-2801. doi: 10.3788/HPLPB20122412.2797
[9]	Wang Zhiguo, Sun Fengju, Qiu Aici, Jiang Xiaofeng, Liang Tianxue, Yin Jiahui, Liu Peng, Wei Hao, Zhang Pengfei, Zhang Zhong. Loss characteristics of FLTD magnetic cores under fast pulsed voltage[J]. High Power Laser and Particle Beams, 2012, 24(03): 524-527.
[10]	ding yaogen, liu pukun, zhang zhaochuan, wang yong, shen bin. Application of high power microwave vacuum electron devices[J]. High Power Laser and Particle Beams, 2011, 23(08): 0- .
[11]	zhang manzhou, li haohu, li deming. Estimate of eddy current effects in APTRON[J]. High Power Laser and Particle Beams, 2011, 23(05): 0- .
[12]	wang haitian, li ge, cao liang. Snubber for EAST neutral beam injector[J]. High Power Laser and Particle Beams, 2010, 22(06): 0- .
[13]	chen yu-xiao, ren ke-yu, wang yan. An electronic sampling method for sub-nanosecond laser pulse[J]. High Power Laser and Particle Beams, 2008, 20(09): 0- .
[14]	chen jia-yuan, yu wen-feng, yang feng, wu si-ming, zuo dou-luo, cheng zu-hai. Beam quality of unstable resonator of TEA CO2 coaxial output laser with vortex tube cooling system[J]. High Power Laser and Particle Beams, 2007, 19(07): 0- .
[15]	shang lei, wang xiang-qi, jiang dao-man, wang lin, zhao feng, feng guang-yao. Coating technology improvement of ceramic chamber and measurement of time characteristic of pulsed magnetic field[J]. High Power Laser and Particle Beams, 2004, 16(03): 0- .
[16]	jin da-zhi, tang ping-ying, liu tie, tan xiao-hua, dai jing-yi. Application of Penning discharge in vacuum-measuring of sealed vacuum device[J]. High Power Laser and Particle Beams, 2002, 14(03): 0- .
[18]	yu wen-feng, zhou zhuo-you, cheng zu-hai, zhang yao-ning. Finite element method in analysis of laser window cooling androtating by vortex tube[J]. High Power Laser and Particle Beams, 2000, 12(07): 0- .

Supplements(0)

Cited By

Cited by

Periodical cited type(2)

1.	陈锶，高杨，任万春，彭春瑞，王姮. FeGaB磁性薄膜中涡流损耗抑制方法的仿真. 压电与声光. 2020(03): 357-360 .
2.	古亮，谭清月，张腾翼，帅潇潇，王帅. 电子束二极管脉冲磁场的涡流分析及抑制. 强激光与粒子束. 2019(01): 72-78 . 本站查看