Axial electric wake field inside the induction gap exited by the intense electron beam

ZHANG Kai-Zhi; ZHANG Huang; LONG Ji-Dong; YANG Guo-Jun; HE Xiao-Zhong; WANG Hua-Cen

doi:10.1088/1674-1137/32/10/015

Chinese Physics C> 2008, Vol. 32> Issue(10) : 842-845 DOI: 10.1088/1674-1137/32/10/015

Axial electric wake field inside the induction gap exited by the intense electron beam

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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.

References

[1]

. WANG Hua-Cen, ZHANG Kai-Zhi, WEN Long et al. Proceedings of the 1999 Particle Accelerator Conference. New York, 1999. 3263-32652. Ong M M. Proceedings of International Pulsed Power Conference. Monterey, 2005. 112-1153. DING Bo-Nan et al. HEP NP, 2005, 29(6): 604 (in Chinese)4. Robert J B, Edl S. High Power Microwave Sources and Technologies. Wiley-IEEE Press, 20015. CHEN Y J. Nucl. Instrum. Methods in Physics Research A, 1990, 292: 455-4646. ZHANG Kai-Zhi. Research on Beam Breakup Instability ofLinear Induction Accelerator. Beijing, 2000 (in Chinese)7. ZHANG Kai-Zhi, WANG Hua-Cen, ZHANG Wen-Wei et al. Proceedings of 13th International Conference on High-Power Particle Beams (BEAMS 2000). Nagaoka, Japan,2000, 548-5518. SHEN Zhi-Yuan. Microwave Technology. National Defense Engineering Press, 1980 (in Chinese)9. Wilson P B. Proceedings of XXth International Linac Conference. Monterey, California, 2000. 618-62010. Loew G A, WANG J W. RF Breakdown Studies in Room Temperature Electron Linac Structures, SLAC-PUB-4647.1988

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ZHANG Kai-Zhi, ZHANG Huang, LONG Ji-Dong, YANG Guo-Jun, HE Xiao-Zhong and WANG Hua-Cen. Axial electric wake field inside the induction gap exited by the intense electron beam[J]. Chinese Physics C, 2008, 32(10): 842-845. doi: 10.1088/1674-1137/32/10/015

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Received: 2007-12-18
Revised: 2008-02-18

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沈阳化工大学材料科学与工程学院沈阳 110142

Axial electric wake field inside the induction gap exited by the intense electron beam

Corresponding author: ZHANG Kai-Zhi,

Received Date: 2007-12-18
Accepted Date: 2008-02-18
Available Online: 2008-10-05

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.