Electromagnetic simulation study of dielectric wall accelerator structures

ZHAO Quan-Tang; ZHANG Zi-Min; YUAN Ping; CAO Shu-Chun; SHEN Xiao-Kang; JING Yi; LIU Ming; ZHAO Hong-Wei

doi:10.1088/1674-1137/36/4/010

Chinese Physics C> 2012, Vol. 36> Issue(4) : 350-354 DOI: 10.1088/1674-1137/36/4/010

Electromagnetic simulation study of dielectric wall accelerator structures

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Abstract：
Two types of dielectric wall accelerator (DWA) structures, a bi-polar Blumlein line and zero integral pulse line (ZIP) structures were investigated. The high gradient insulator simulated by the particle in cell code con rms that it has little in uence on the axial electric field. The results of simulations using CST microwave studio indicate how the axial electric field is formed, and the electric eld waveforms agree with the theoretical one very well. The in uence of layer-to-layer coupling in a ZIP structure is much smaller and the electric eld waveform is much better. The axial of the Blumlein structure's electric field has better axial stability. From both of the above, it found that for a shorter pulse width, the axial electric field is much higher and the pulse stability and delity are much better. The CST simulation is very helpful for designing DWA structures.

References

[1]

George J Caporaso, Sampayan S, CHEN Y J et al. Particle Accelerator Conference, 2007, PAC. IEEE, 2007. 857-8612 Sampayan S, Caporaso G, CHEN Y J et al. Plasma Science,2007. ICOPS 2007. IEEE 34th International Conference on,2007. 6833 CHEN Yu-Jiuan, Paul A C. Particle Accelerator Conference, 2007, PAC. IEEE, 2007. 1787-17894 Harris J R, Kendig M, Poole B et al. Applied Physics Letters, 2008, 83: 2415025 Joler, Miroslav. Analysis and Optimization of ParallelPlate Blumlein Line for Compact Pulsed-Power system, (Ph.D.Thesis). The University of New Mexico, AAT3220947, 2006. 2646 ZHAO Quan-Tang, YUAN Ping, ZHANG Zi-Min et al. Chinese Physics C, 2011, 35(12): 1148-11517 Sampayan S, Caporaso G, Carder B et al. Particle Accelerator Conference, 1995. Proceedings of the 1995, 1995, 2:1269-12718 ZHAO Quan-Tang, YUAN Ping, ZHANG Zi-Min et al. High Power Laser and Particle Beams. 2011, 23(6): 1629 (in Chinese)9 Nelson S D, Poole B R, Caporaso G J. Particle Accelerator Conference, PAC. IEEE, 2007. 1784-1786

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ZHAO Quan-Tang, ZHANG Zi-Min, YUAN Ping, CAO Shu-Chun, SHEN Xiao-Kang, JING Yi, LIU Ming and ZHAO Hong-Wei. Electromagnetic simulation study of dielectric wall accelerator structures[J]. Chinese Physics C, 2012, 36(4): 350-354. doi: 10.1088/1674-1137/36/4/010

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Received: 2011-06-29
Revised: 2011-07-25

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沈阳化工大学材料科学与工程学院沈阳 110142

Electromagnetic simulation study of dielectric wall accelerator structures

Received Date: 2011-06-29
Accepted Date: 2011-07-25
Available Online: 2012-04-05

Abstract: Two types of dielectric wall accelerator (DWA) structures, a bi-polar Blumlein line and zero integral pulse line (ZIP) structures were investigated. The high gradient insulator simulated by the particle in cell code con rms that it has little in uence on the axial electric field. The results of simulations using CST microwave studio indicate how the axial electric field is formed, and the electric eld waveforms agree with the theoretical one very well. The in uence of layer-to-layer coupling in a ZIP structure is much smaller and the electric eld waveform is much better. The axial of the Blumlein structure's electric field has better axial stability. From both of the above, it found that for a shorter pulse width, the axial electric field is much higher and the pulse stability and delity are much better. The CST simulation is very helpful for designing DWA structures.