The results show that when the phase spread or energy spread of the bunch is large, relatively large errors could be introduced in z-code during the calculation of space charge effect. Therefore t-code should be adopted instead in the dynamic simulations for more accurate results. 结果表明,当束团的相位宽度大或能散大时,z-code在计算空间电荷作用时会引入相对较大的误差,从而应该使用t-code来进行动力学模拟,以获得更准确的结果。
Application of PIC method for z-code and t-code simulation in RFQ accelerators PIC方法在RFQ加速器z-code和t-code模拟程序中的应用研究