1Key Laboratory of Heavy Ion Physics (MOE) and School of Physics, Peking University, Beijing 1008712Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
A Code for Bunch Lengthening Simulation
SUN Yi-Peng1,2;GAO Jie2;GUO Zhi-Yu1
1Key Laboratory of Heavy Ion Physics (MOE) and School of Physics, Peking University, Beijing 1008712Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
摘要Bunch lengthening phenomenon is resulted from one of the most severe single bunch instabilities in storage rings. We develop a new code to calculate the single bunch length and energy spread in storage rings using FORTRAN. In this code, wake field is calculated using an analytical formula, which is different from the previous ones. The bunch length and energy spread under different bunch currents are calculated for BEPCII by using this code, and the tracking results are in good agreement with those from other codes. The calculated energy spread clearly shows that the longitudinal microwave instability threshold is around 65mA for BEPCII storage ring.
Abstract：Bunch lengthening phenomenon is resulted from one of the most severe single bunch instabilities in storage rings. We develop a new code to calculate the single bunch length and energy spread in storage rings using FORTRAN. In this code, wake field is calculated using an analytical formula, which is different from the previous ones. The bunch length and energy spread under different bunch currents are calculated for BEPCII by using this code, and the tracking results are in good agreement with those from other codes. The calculated energy spread clearly shows that the longitudinal microwave instability threshold is around 65mA for BEPCII storage ring.
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2008, Vol. 25 
