Chinese Physics C > 2014, Vol. 38 > Issue(5): 057004 DOI: 10.1088/1674-1137/38/5/057004

Velocity bunching in travelling wave accelerator with low acceleration gradient

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Abstract：
We present the analytical and simulated results of our study of the influence of the acceleration gradient in the velocity bunching process, which is a bunch compression scheme that uses a travelling wave accelerating structure as a compressor. Our study shows that the bunch compression application with low acceleration gradient is more tolerant to phase jitter and more successful in obtaining a compressed electron beam with symmetrical longitudinal distribution and low energy spread. We also present a transverse emittance compensation scheme to compensate the emittance growth caused by the increase of the space charge force in the compressing process, which is easy to adjust for different compression factors.

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HUANG Rui-Xuan, HE Zhi-Gang, LI Wei-Wei and JIA Qi-Ka. Velocity bunching in travelling wave accelerator with low acceleration gradient[J]. Chinese Physics C, 2014, 38(5): 057004. doi: 10.1088/1674-1137/38/5/057004

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Received: 2013-06-05
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Velocity bunching in travelling wave accelerator with low acceleration gradient

Corresponding author:HE Zhi-Gang,

Received Date:2013-06-05
Accepted Date:1900-01-01
Available Online:2014-05-05

Abstract:We present the analytical and simulated results of our study of the influence of the acceleration gradient in the velocity bunching process, which is a bunch compression scheme that uses a travelling wave accelerating structure as a compressor. Our study shows that the bunch compression application with low acceleration gradient is more tolerant to phase jitter and more successful in obtaining a compressed electron beam with symmetrical longitudinal distribution and low energy spread. We also present a transverse emittance compensation scheme to compensate the emittance growth caused by the increase of the space charge force in the compressing process, which is easy to adjust for different compression factors.