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。

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.