5 MA 100 ns重频LTD驱动器设计

设计了用于Z箍缩丝阵实验的重频LTD驱动器, 含6路并联模组, 每组由8个0.8 MA原型模块串联组成, 全真空结构。原型模块采用全新的单路触发和电感隔离技术, 触发难度和重频运行可靠性得到显著优化。利用电路模拟程序对驱动器进行了仿真计算, 结果表明:在初始半径1.2 cm、线质量1 mg/cm的Z箍缩负载上, 驱动器的输出电流峰值可到5.2 MA, 前沿91 ns；负载内爆最大动能78 kJ, 从电容储能至负载动能的转化效率为11.7%。该驱动器预期将获得高达20%~30%的辐射能量效率, 可为Z箍缩物理研究提供高效的实验平台。

Design of 5 MA 100 ns repetitive linear-transformer-driver accelerator

The design of a linear-transformer-driver (LTD) accelerator for wire-array Z-pinch experiments was presented. The accelerator comprises 6 modules in parallel, and each of the module has 8 series 0.8 MA LTD cavities in a voltage adder configuration. A prototype cavity was built, employing a novel single-pulse-trigger method, as well as charging and trigger inductors. A full circuit modeling for the accelerator was conducted. Simulation result shows that a current pulse rising to 5.2 MA in 91 ns (10%-90%) can be delivered to the wire-array load, which is 1.2 cm in initial radius and 1mg in mass. The max kinetic energy of the load is 78kJ, which is 11.7% of the electric energy stored in the capacitors. This accelerator is supposed to enable a radiation energy efficiency of 20%-30%, providing a high efficient facility for research on fast Z-pinch and technologies for rep-rately operated accelerators.