Axial electric wake field inside the induction gap exited by the intense electron beam |
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Authors: | ZHANG Kai-Zhi ZHANG Huang LONG Ji-Dong YANG Guo-Jun HE Xiao-ZhongWANG Hua-Cen |
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Institution: | Institute of Fluid Physics, CAEP, Mianyang 621900, China |
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Abstract: | While an intense electron beam passes through the accelerating gaps of a linear induction accelerator, a strong wake field will be excited. In this paper a relatively simple model is established based on the interaction between the transverse magnetic wake field and the electron beam, and the numerical calculation in succession generates a magnetic wake field distribution along the accelerator and along the beam pulse as well. The axial electric wake field is derived based on the relation between field components of a resonant mode. According to some principles in existence, the influence of this field on the high voltage properties of the induction gap is analyzed. The Dragon-I accelerator is taken as an example, and its maximum electric wake field is about 17 kV/cm, which means the effect of the wake field is noticeable. |
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Keywords: | linear induction accelerator induction gap wake field high voltage breakdown property |
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