Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2009, Vol. 20 ›› Issue (5): 277-280 doi: 10.13538/j.1001-8042/nst.20.277-280

• NUCLEAR, HEAVY ION AND ATOMIC PHYSICS • Previous Articles     Next Articles

Design of an RFQ for direct plasma injection scheme

ZHANG Zhouli1,2,* R.A. Jameson3 ZHAO Hongwei1 XU Zhe1 LIU Yong1 ZHANG Shenghu1 ZHANG Cong1,2 SUN Liepeng1,2 MEI Lirong1,2 SHEN Xiaokang1,2   

  1. 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3Institut für Angewandte Physik, Goethe Universität. Frankfurt, D60438, Frankfurt-am-Main, Germany
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ZHANG Zhouli, R.A. Jameson, ZHAO Hongwei, XU Zhe, LIU Yong. Design of an RFQ for direct plasma injection scheme.Nuclear Science and Techniques, 2009, 20(5): 277-280     doi: 10.13538/j.1001-8042/nst.20.277-280

Abstract:

A high current radio frequency quadrupole (RFQ) is being studied at the Institute of Modern Physics, Chinese Academy of Sciences (IMP, CAS) for the direct plasma injection scheme (DPIS). Because of the strong space charge of beams from laser ion source, the beam dynamics design of the RFQ has been carried out with a new code, which can deal with space charge effectively. The design of the RFQ structure is performed with an electromagnetic simulation code and the determination of parameters of the structure has been done to maximize the shunt impedance when the frequency is kept fixed. The influences of dipole mode effect and flatness on beams were also discussed.

Key words: LINACSrfq code, 4-rod structure, Dipole mode effect, Flatness