磁铁电源故障引起的束流损失模拟程序BTracker开发

The Development of BTracker, a Simulation Code for Beam Losses From Magnet Power Failure

摘要: 强流重离子加速器HIAF的增强器BRing具有高流强、高能量的特点，其关键设备如磁铁、高频系统的故障将会造成严重的束流损失和对加速器的损伤。为了研究关键设备故障下的束流损失分布和beam dump过程中的束流动力学，为HIAF机器保护系统建设提供参考，开发了一套通用的逐元件的束流动力学模拟软件BTracker。利用该软件模拟了二极磁铁和四极磁铁电源故障下的束流损失分布并与MAD-X软件作了相互校验，结果符合较好。除此之外，BTracker还具有用户友好、接口灵活以及计算性能优秀的特点，满足HIAF-BRing机器保护研究的需求。

Abstract: The booster ring(BRing) of High Intensity heavy-ion Accelerator Facility(HIAF) is characterized by high intensity and high energy. Failures of key equipment such as magnets and RF system will lead to significant beam losses and damage to the accelerator. A beam dynamics simulation code BTracker is developed to study beam losses under equipment failures and beam dynamics during beam dumping for the HIAF machine protrection. With this code, beam loss distribution under power failure of dipole and quadrupole magnets is simulated, and the results are benchmarked with MAD-X code. In addition, BTracker provides user-friendliness, interface flexibility and high performance to meet the requirements of machine protection simulation for HIAF-BRing.