Construction of a beam rebuncher for RIKEN RI-beam factory

Aoki, Takao; Stingelin, L.; Kamigaito, O.; Sakamoto, N.; Fukunishi, Nobuhisa; Yokouchi, S.; Maie, T.; Kase, M.; Gotō, Akira; Yano, Y.

doi:10.1016/j.nima.2008.04.004

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“…First, the quality factor Q can be estimated as: Q = ωU/P , where ω is the angular frequency of the mode and U is the stored energy in the system, and P the average power loss. They can be calculated by the following expressions [6]:…”

Section: Calculationmentioning

confidence: 99%

Design study of the SSC-LINAC re-buncher

et al. 2013

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Section: Calculationmentioning

confidence: 99%

Design study of the SSC-LINAC re-buncher

et al. 2013

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Study of separated function radio frequency quadrupoles accelerator

Wang¹,

Chen²,

Lu³

et al. 2010

Chinese Phys. C

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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.

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