Simulation of beam-beam effects in a circular e(+)e(-) collider
Simulation of beam-beam effects in a circular e(+)e(-) collider
复制标题
圆形 e( )e(-) 对撞机中束-束效应的模拟
DOI：
10.1103/physreve.62.7287
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
K. Ohmi
中科院分区：
文献类型：
--
作者：
K. Ohmi
对圆形电子-正电子对撞机中的束流效应进行了强-强模拟研究。在模拟中，正电子束和电子束都用宏观粒子表示，两束之间的相互作用是通过求解宏观粒子电荷分布的泊松方程得到的。通过模拟，我们研究了束束极限和相干束束调谐漂移这两个束束效应的特征现象。我们还研究了有限交叉角的碰撞，并验证了其在KEKB工厂的可行性。我们对KEKB的计算结果得到的光度估计为8.5×10(33)厘米(-2)S(-1)，仅略低于设计值1×10(34)厘米(-2)S(-1)。
We have carried out a strong-strong simulation to study the beam-beam effect in a circular electron-positron collider. In the simulation, both the positron and electron beams are represented by macroparticles, and the interaction between the two beams is obtained by solving the Poisson equation for the charge distribution of the macroparticles. Using the simulation, we investigate the beam-beam limit and the coherent beam-beam tune shift, two characteristic phenomena of the beam-beam effect. We also study collision with a finite crossing angle, and verify its feasibility for the KEKB factory. Our results for KEKB yield an estimated luminosity of 8.5x10(33) cm(-2) s(-1), only slightly lower than the design value of 1x10(34) cm(-2) s(-1).