Chinese Physics C > 2007, Vol. 31 > Issue(5): 501-505

Simulation and Design of the Photonic Crystal Microwave Accelerating Structure

NSRL, University of Science and Technology of China, Hefei 230029, China

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Abstract：
We have derived the global band gaps for general two-dimensional (2D) photonic crystal microwave accelerating structures formed by square or triangular arrays of metal posts. A coordinate-space, finite-difference code was used to calculate the complete dispersion curves for the lattices. The fundamental and higher frequency global photonic band gaps were determined numerically. The structure formed by triangular arrays of metal posts with a missing rod at the center has advantages of higher-order-modes (HOM) suppression and main mode restriction under the condition of a/b<0.2. The relationship between the RF properties and the geometrical parameters have been studied for the 9.37GHz photonic crystal accelerating structure. The R _S, Q,R _S/Q of the new structure may be comparable to the disk-loaded accelerating structure.

References

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. Adolphsen C, Bane K, Higo T et al. Phys. Rev. Lett., 1995,74: 24752. Smirnova E I et al. Phys. Rev. Lett., 2005, 95: 0748013. Cowan B. Photonic Crystal Laser-Driven Photonic Acceler-ator Structure. Proceedings of the 2005 Particle Acceler-ator Conference. IEEE, Knoxville, Tennessee, 2005. 27204. Smirnova E I et al. J. Appl. Phys., 2002, 91: 9605. HUANG K. Solid State Physics. Beijing: Higher EducationPress, 1988(in Chinese)(黄昆.固体物理.北京:高等教育出版社,1988)

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SONG Rui-Ying, WU Cong-Feng, HE Xiao-Dong and DONG Sai. Simulation and Design of the Photonic Crystal Microwave Accelerating Structure[J]. Chinese Physics C, 2007, 31(5): 501-505.

SONG Rui-Ying, WU Cong-Feng, HE Xiao-Dong and DONG Sai. Simulation and Design of the Photonic Crystal Microwave Accelerating Structure[J]. Chinese Physics C, 2007, 31(5): 501-505. shu

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Received: 2006-09-06
Revised: 2006-11-23

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沈阳化工大学材料科学与工程学院沈阳 110142

Simulation and Design of the Photonic Crystal Microwave Accelerating Structure

Corresponding author:WU Cong-Feng,

NSRL, University of Science and Technology of China, Hefei 230029, China

Received Date:2006-09-06
Accepted Date:2006-11-23
Available Online:2007-05-05

Abstract:We have derived the global band gaps for general two-dimensional (2D) photonic crystal microwave accelerating structures formed by square or triangular arrays of metal posts. A coordinate-space, finite-difference code was used to calculate the complete dispersion curves for the lattices. The fundamental and higher frequency global photonic band gaps were determined numerically. The structure formed by triangular arrays of metal posts with a missing rod at the center has advantages of higher-order-modes (HOM) suppression and main mode restriction under the condition of a/b<0.2. The relationship between the RF properties and the geometrical parameters have been studied for the 9.37GHz photonic crystal accelerating structure. The R_S, Q,R_S/Q of the new structure may be comparable to the disk-loaded accelerating structure.