Chinese Physics C > 2010, Vol. 34 > Issue(4): 502-505 DOI: 10.1088/1674-1137/34/4/017

Study of separated function radio frequency quadrupoles accelerator

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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.

References

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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

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Received: 2009-06-04
Revised: 2009-07-25

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of separated function radio frequency quadrupoles accelerator

Corresponding author:WANG Zhi,

Received Date:2009-06-04

Accepted Date:2009-07-25

Available Online:2010-04-05

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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Study of separated function radio frequency quadrupoles accelerator

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