Equivalent model of electromagnetic radiation induced by gas-gap switches in intense electron beam accelerator

Xuliang, 樊旭亮 Fan; Ling, 李玲 Li; Jinliang, 刘金亮 Liu

doi:10.3788/hplpb20132504.1055

强激光与粒子束

2013

DOI: 10.3788/hplpb20132504.1055

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Equivalent model of electromagnetic radiation induced by gas-gap switches in intense electron beam accelerator

樊旭亮 Fan Xuliang¹,

李玲 Li Ling²,

刘金亮 Liu Jinliang³

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Time‐domain resonant characteristics between the disturbances and the RS422 communication signals in Tesla pulse driver, and analysis on the caused RS422 communication interference

Zhang

Cheng

et al. 2020

IET sci. meas. technol.

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The communication circuit network is widely employed for signal transmission in high‐voltage pulse driver system, for commanding, controlling, measurement & communication. The electromagnetic compatibility of the communication circuit network mainly decides the stability and reliability of the high‐voltage pulse driver system. Aiming at the electromagnetic interference (EMI) problems of the RS422 communication circuit in the Tesla pulse driver, the generated disturbance sources and characteristics from the Tesla pulse driver itself are analysed in five divided work stages, and two typical simplified EMI coupling modes for the communication circuit are also presented in this Letter. In the RS422 communication cable circuits between the subsystems of the pulse driver, the time‐domain resonant characteristics of the communication signal and the conducting disturbances are analysed. The error and failure modes of the RS422 communication data caused by the full time‐domain conducting interference are also revealed. Evaluation and calculation method for the time‐domain resonant probability and the interference probability of the RS422 communication signals is also put forward. The communication interference probability is also calculated under different repetition work modes of the Tesla pulse driver. In view of the time‐domain resonance phenomenon, some effective ways for time‐domain resonance elimination and interference compression are put forward.

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Time‐domain resonant characteristics between the disturbances and the RS422 communication signals in Tesla pulse driver, and analysis on the caused RS422 communication interference

Zhang

Cheng

et al. 2020

IET sci. meas. technol.

View full text Add to dashboard Cite

show abstract

Research on the electromagnetic radiation characteristics of the gas main switch of a capacitive intense electron-beam accelerator

et al. 2017

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Strong electromagnetic fields are radiated during the operation of the intense electron-beam accelerator (IEBA), which may lead to the nearby electronic devices out of order. In this paper, the research on the electromagnetic radiation characteristic of the gas main switch of a capacitive IEBA is carried out by the methods of theory analysis and experiment investigation. It is obtained that the gas main switch is the dominating radiation resource. In the absence of electromagnetic shielding for the gas main switch, when the pulse forming line of the IEBA is charged to 700 kV, the radiation field with amplitude of 3280 V/m, dominant frequency of 84 MHz and high frequency 100 MHz is obtained at a distance of 10 meters away from the gas main switch. The experimental results of the radiation field agree with the theoretical calculations. We analyze the achievements of several research groups and find that there is a relationship between the rise time (T) of the transient current of the gas main switch and the dominant frequency (F) of the radiation field, namely, F*T=1. Contrast experiment is carried out with a metal shield cover for the gas main switch. Experimental results show that for the shielded setup the radiation field reduces to 115 V/m, the dominant frequency increases to 86.5 MHz at a distance of 10 away meters from the gas main switch. These conclusions are beneficial for further research on the electromagnetic radiation and protection of the IEBA.

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Equivalent model of electromagnetic radiation induced by gas-gap switches in intense electron beam accelerator

Cited by 2 publications

References 0 publications

Time‐domain resonant characteristics between the disturbances and the RS422 communication signals in Tesla pulse driver, and analysis on the caused RS422 communication interference

Time‐domain resonant characteristics between the disturbances and the RS422 communication signals in Tesla pulse driver, and analysis on the caused RS422 communication interference

Research on the electromagnetic radiation characteristics of the gas main switch of a capacitive intense electron-beam accelerator

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