Study on beam crystallization by three-dimensional laser cooling in a dispersion-free storage ring and extraction of crystalline beams

为了实现高质量的带电粒子束“晶体束”，利用分子动力学模拟技术，探索了一种在无色散存储环中三维激光冷却形成晶体束的方法。由于库仑相互作用导致的光束加热可能是光束冷却的障碍，已经在很宽的温度范围内进行了评估，以澄清用于光束结晶的存储环和光束的条件。还发现了从环中提取的结晶光束稳定传输的物理条件。

In order to realize an extremely high-quality charged-particlebeam, "crystalline beam", a formation method of crystalline beams by means of three-dimensional laser cooling in a dispersion-free storage ring has been explored using the molecular dynamics simulation technique. The beam heating due to Coulomb interactions, which can be an obstacle to beam cooling, has been evaluated over a wide temperature range to clarify the conditions of a storage ring and beams for beam crystallization. A physical condition has been also found for stable transportation of crystalline beams extracted from a ring.