Preliminary design and simulation of a 162.5 MHz high- intensity proton RFQ for an accelerator driven system

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XIAO Chen, HE Yuan, LIU Yong, YUAN You-Jin, WANG Zhi-Jun, HE Shou-Bo, XU Meng-Xin, LI Chao, YUE Wei-Ming, CHANG Wei, ZHAO Hong-Wei and XIA Jia-Wen. Preliminary design and simulation of a 162.5 MHz high- intensity proton RFQ for an accelerator driven system[J]. Chinese Physics C, 2011, 35(11): 1053-1058. doi: 10.1088/1674-1137/35/11/014
XIAO Chen, HE Yuan, LIU Yong, YUAN You-Jin, WANG Zhi-Jun, HE Shou-Bo, XU Meng-Xin, LI Chao, YUE Wei-Ming, CHANG Wei, ZHAO Hong-Wei and XIA Jia-Wen. Preliminary design and simulation of a 162.5 MHz high- intensity proton RFQ for an accelerator driven system[J]. Chinese Physics C, 2011, 35(11): 1053-1058.  doi: 10.1088/1674-1137/35/11/014 shu
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Received: 2011-01-19
Revised: 2011-04-07
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Preliminary design and simulation of a 162.5 MHz high- intensity proton RFQ for an accelerator driven system

Abstract: A new procedure for the design and simulation of a Radio Frequency Quadrupole (RFQ) accelerator has been developed at the Argonne National Laboratory. This procedure is integrated with the beam dynamics design code DESRFQ and the simulation code TRACK, which are based on three-dimensional field calculations and the particle-in-cell mode beam dynamics simulations. This procedure has been applied to the development of a 162.5 MHz CW RFQ which is capable of delivering a 10 mA proton beam for the Accelerator Driven System (ADS) of the CAS. The simulation results show that this RFQ structure is characterized by the stable values of the beam acceleration efficiency for both the zero current beam and space charge dominated beam. For an average beam current of 10 mA, there is no transverse rms emittance growth, the longitudinal rms emittance at the exit of RFQ is low enough and there is no halo formation. The beam accelerated in the RFQ could be accepted easily and smoothly by the following super-conducting linear accelerator.

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