Tsing Hua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
An additional beam with opposite charge state is added into the dynamic simulation of the t-Code program PARMTEQ. The space charge effect and multi-bunch effect during the,positive and negative ion beams acceleration are considered. The result is given for a four-vane type RFQ accelerator. The purpose of simulation is focused on the investigation of possible dynamic problems caused by two-beam acceleration in RFQ structure. Two-beam acceleration is prior to diminish the transverse space charge effect, but "trap" between opposite charge state ions in longitudinal position appears when the beam current is large, which is the main cause of the increasing number of longitudinal loss. Therefore new RFQ structures should be designed specially for two-beam acceleration to obtain higher transmission rate than single beam acceleration.
Xing, QZ,Lin, YZ,Fu SN,et al. Study of simultaneous acceleration of positive and negative ion beams by dynamic simulation in RFQ[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2004,28(6):659-663.
Xing, QZ,Lin, YZ,傅世年,方守贤,Fu, SN,&Fang, SX.(2004).Study of simultaneous acceleration of positive and negative ion beams by dynamic simulation in RFQ.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,28(6),659-663.
Xing, QZ,et al."Study of simultaneous acceleration of positive and negative ion beams by dynamic simulation in RFQ".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 28.6(2004):659-663.