【摘要】 二极磁铁是同步加速器的核心部件，在加速过程中，二极磁铁的边缘角会随着磁场上升变化，从而造成工作点的漂移，束流会因为共振而不稳定。为解决此问题引起的束流丢失，中国科学院近代物理研究所设计了一套用于能根据二极磁铁边缘效应变化自动进行工作点校正的软件，目前已经嵌入在自主设计的物理控制系统(Physics-oriented Accelerator Control System, PACS)中，该软件已经在哈尔滨工业大学空间环境地面模拟装置(SESRI) 300 MeV质子重离子加速器上成功部署。通过对300 MeV质子重离子加速器的实际束流测试，软件校正后设置水平工作点和测量水平工作点绝对偏差小于或等于0.000 9，设置垂直工作点和测量垂直工作点绝对偏差小于或等于0.002，使300 MeV质子重离子加速器达到更高的流强和更好的束流品质。更多还原

【Abstract】 The dipole magnet constitutes the fundamental component of the synchrotron. During the acceleration process, the rotation angles of the dipole magnet will undergo a change as the magnetic field rises, which will result in a shift in the tune and an instability in the beam current due to resonance. To address the issue of beam current loss, the Institute of Modern Physics has developed a software solution for automatic tune correction in response to fringe field changes. This software has been integrated into Physics-oriented Accelerator Control System(PACS) and has been deployed in the Space Environment Simulation and Research Infrastructure(SESRI). Following the actual beam test in SESRI, the absolute deviation between the set horizontal tune and the measured horizontal tune after software correction is less than or equal to 0.000 9, and the absolute deviation between the set vertical tune and the measured vertical tune is less than or equal to 0.002.更多还原