Effective electromagnetic shielding with multi-layer structure material on Shenguang laser facility

Lijun ZHAO (赵丽君); Tingshuai LI (李廷帅); Yadong XIA (夏亚东); Hongna ZHU (朱宏娜); Chuanke WANG (王传珂); Feng WANG (王峰); Shaoen JIANG (江少恩)

doi:10.1088/2058-6272/ab5068

Plasma Science and Technology > 2020 > 22(2): 25601-025601. > DOI: 10.1088/2058-6272/ab5068

Lijun ZHAO (赵丽君), Tingshuai LI (李廷帅), Yadong XIA (夏亚东), Hongna ZHU (朱宏娜), Chuanke WANG (王传珂), Feng WANG (王峰), Shaoen JIANG (江少恩). Effective electromagnetic shielding with multi-layer structure material on Shenguang laser facility[J]. Plasma Science and Technology, 2020, 22(2): 25601-025601. DOI: 10.1088/2058-6272/ab5068

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Effective electromagnetic shielding with multi-layer structure material on Shenguang laser facility

¹ School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
²Laser Fusion Research Center, Chinese Academy of Engineering Physics, Mianyang 621990, People's Republic of China
³ School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, People's Republic of China

Funds: This work was supported by National Natural Science Foundation of China (No. 61405167) and the Fundamental Research Funds for the Central Universities (Nos. 2682018GF10 and 2682019LK08). We would like to thank China Academy of Engineering Physics for their assistance in experiments.

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Received Date: June 17, 2019
Revised Date: October 16, 2019
Accepted Date: October 21, 2019

Graphical Abstract

Abstract

Abstract

Electromagnetic pulses (EMPs) with high intensity and frequency bandwidth can be generated during the intensive laser irradiating solid targets in inertial confinement fusion (ICF). To shield the EMPs radiation and hence protect various diagnostics in and outside the target chamber, we designed a multi-layer structure material to shield the EMPs and demonstrate experimentally and numerically shielding performance of the material structure. The thickness of the multi-layer structure material has a great influence on the EMPs shielding. It is shown that, with the increase of the material thickness, the better shielding performance is obtained, and the material structure with polytetrafluoroethylene of 0.5 mm, copper of 0.4 mm and lead of 2.4 mm reduces 448 times compared the maximum value of EMPs voltage to that without shielded. The design of multilayer structure material for EMPs shielding provides a promising way to reduce EMPs radiation, which is extremely useful for the diagnostics protection and signal processing in ICF.
- electromagnetic pulse,
- shielding,
- inertial confinement fusion,
- Shenguang laserfacility

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References (25)

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