Calculations　of propagation characteristics and the model cavity investigations for a X-band hybrid dielectric-iris-loaded traveling accelerating structure

WU Cong-Feng; DONG Sai; LIN Hui; PEI Yuan-Ji

Chinese Physics C> 2006, Vol. 30> Issue(S1) : 57-59

Calculations　of propagation characteristics and the model cavity investigations for a X-band hybrid dielectric-iris-loaded traveling accelerating structure

National Synchrotron Radiation Lab, USTC, Hefei 230029, China

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Abstract：
The dispersion curves of the TM01 and HEM₁₁ modes for the X-band hybrid dielectric-iris-loaded travelling accelerating structure have been calculated. The results show that the cutoff frequency and the propagation constant of HEM₁₁ mode are lower than those of the TM₀₁ mode. We have found that the certain dielectric available with permittivity of 5.81 is applied to the design of the new accelerating structure. The MAFIA code has been used to optimize the model cavities, and the measurements indicate that the resonance frequency is consistent with the design frequency.

References

[1]

. ZOU P, XIAO L L, SUN X et al. J. Appl. Phys., 2001,90(4): 2017—20232. Adolphsen C, Baumgartner W, Jobe K Loewen et al.RF Processing of X-Band Accelerator Structures at theNLCTA. SLAC-PUB-8573, Stanford Linear AcceleratorCenter, Stanford University, August 20003. Loewen R J, Menegat A, Vlieks A E et al. Proceedingsof 1999 Particle Accelerator Conference. New York, 1999.3420—34224. Chojnacki E, Gai W, Ho C et al. J. Appl. Phys., 1991,69(9): 6257—6260

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WU Cong-Feng, DONG Sai, LIN Hui and PEI Yuan-Ji. Calculations　of propagation characteristics and the model cavity investigations for a X-band hybrid dielectric-iris-loaded traveling accelerating structure[J]. Chinese Physics C, 2006, 30(S1): 57-59.

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Received: 2005-12-07
Revised: 1900-01-01

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