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介绍了兰州重离子加速器冷却储存环(HIRFL-CSR)CSRm引出kicker磁铁的物理设计、参数计算以及结构设计和加工。为了减小电感,使上升时间达到要求,CSRm引出kicker磁铁采用分布式的传输线方案,同时将无感电容与磁铁并联以满足匹配的问题。磁铁用单匝线圈和铁氧体铁芯来降低电感、减少涡流损耗,并采取两台电源成对供电、导体一端共地的结构形式消除杂散电感和轴向场,这种方式不但消除了过桥的不利影响,而且可通过调节导体间距离方便的调节磁场均匀区宽度和磁铁电感。完成设计后磁铁电感小于1μH,在140 mm范围内磁场均匀度好于±0.5%,最高磁场达到0.038 T,最大峰值激磁电流约为2.5 kA。
The physical design, parameter calculation, structural design and processing of the kicker magnet for CSRm from Lanzhou Heavy Ion Accelerator Cooling Storage Ring (HIRFL-CSR) are introduced. In order to reduce the inductor, the rise time to meet the requirements, CSRm leads kicker magnet using a distributed transmission line program, while the non-inductive capacitance and magnet in parallel to meet the matching problem. Magnets use single-turn coils and ferrite cores to reduce inductance and reduce eddy current losses. Two supplies operate in pairs. The common ground structure of the conductors eliminates stray inductance and axial fields. This eliminates not only the Bridge the adverse effects, but also by adjusting the distance between conductors to facilitate the adjustment of uniform magnetic field width and magnet inductance. The magnet inductance is less than 1μH after design, the magnetic field uniformity is better than ± 0.5% in the range of 140 mm, the maximum magnetic field is 0.038 T, and the maximum peak magnetizing current is about 2.5 kA.