Study of separated function radio frequency quadrupoles accelerator

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WANG Zhi, CHEN Jia-Er, LU Yuan-Rong, GUO Zhi-Yu, YAN Xue-Qing, ZHU Kun, KANG Ming-Lei and FANG Jia-Xun. Study of separated function radio frequency quadrupoles accelerator[J]. Chinese Physics C, 2010, 34(4): 502-505. doi: 10.1088/1674-1137/34/4/017
WANG Zhi, CHEN Jia-Er, LU Yuan-Rong, GUO Zhi-Yu, YAN Xue-Qing, ZHU Kun, KANG Ming-Lei and FANG Jia-Xun. Study of separated function radio frequency quadrupoles accelerator[J]. Chinese Physics C, 2010, 34(4): 502-505.  doi: 10.1088/1674-1137/34/4/017 shu
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Received: 2009-06-04
Revised: 2009-07-25
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Study of separated function radio frequency quadrupoles accelerator

    Corresponding author: WANG Zhi,

Abstract: 

SFRFQ (Separated Function Radio Frequency Quadrupoles) accelerator is a new post accelerator of RFQ (Radio Frequency Quadrupoles) type, which has been developed since the beginning of the 1990s at Peking University. In order to demonstrate the possibility of the SFRFQ, a prototype cavity has been designed. A special dynamics design method has been proposed to avoid the sparking problem and decrease the energy spread at the exit of SFRFQ. It consists of two aspects: the asymmetry structure design for transverse focusing and the inner buncher design for longitudinal bunching. This allows the improvement of the beam properties without increasing the cavity length. The simulation results show that the energy spread can be substantially reduced by using the inner buncher in the SFRFQ structure.

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