论文标题
评估未来的圆形电子旋律对撞机中辐射性去极化的评估
Evaluation of radiative depolarization in the future Circular Electron-Positron Collider
论文作者
论文摘要
偏光Lepton梁是未来100 km尺度的圆形电子峰值对撞机（CEPC）设计的重要方面。使用谐振去极化以及纵向极化的碰撞光束正在积极研究精密光束能量校准。各种光束能和应用方案的可实现的光束极化水平取决于对撞机环中的辐射去极化。在本文中，评估了带有详细的机器缺陷和校正的CEPC撞机晶格的辐射去极化效应。将使用BMAD/PTC代码的苗条和蒙特卡洛方法模拟与超高光束能量的自旋扩散的影响理论进行了比较，因此解决了理论的有效性。本文以摘要和建议进行进一步研究的结论。
Polarized lepton beams are an important aspect in the design of the future 100 km-scale Circular Electron-Positron Collider (CEPC). Precision beam energy calibration using resonant depolarization, as well as longitudinally polarized colliding beams are being actively investigated. The achievable beam polarization level for various beam energies and application scenarios depends on the radiative depolarization in the collider rings. In this paper the radiative depolarization effects are evaluated for a CEPC collider ring lattice with detailed machine imperfections and corrections. Simulations with the SLIM and Monte-Carlo approaches using the Bmad/PTC codes are compared with the theory of the effects of spin diffusion for ultra-high beam energies and the validity of the theories is thereby addressed. The paper concludes with a summary and suggestions for further investigations.
