PTS装置Z箍缩负载设计分析

介绍了PTS装置丝阵负载设计思路，用简化的薄壳模型(零维)和辐射磁流体力学模型(一维)数值模拟了丝阵Z箍缩内爆过程，给出了PTS丝阵负载设计参数，分析了初步优化结果，确定了优化选择的箍缩常数.经脉冲功率驱动器与负载优化匹配设计，PTS实验平台能够获得100TW量级的X射线功率，最佳插头能量转换效率10%.预计PTS实验平台的X射线输出能力基本达到Saturn装置长脉冲模式放电的水平.结果将为PTS开展Z箍缩研究提供有价值的参考. 关键词： PTS装置 Z箍缩丝阵负载 零维薄壳模型 一维辐射磁流体力学数值模拟

Design and analysis of the Z-pinch loads on the PTS facility

In this paper，a method for designing and optimizing the wire-array loads used on the PTS facility is presented. Both ZP-0D code (shell model) and MARED-1D code (MHD model) are used for the simulation. By comparing results from each code，the characteristics of the Z-pinch implosion plasma driven by the PTS facility are investigated，and the load parameters are optimized. It is found that，a 15nH concentrator inductance is efficient for PTS facility to work at load currents up to 10MA. And an optimized tungsten wire-array load is able to produce an X-ray radiation with peak power up to 100TW and a highest efficiency of conversion for the wall-plug power of about 10%. By further investigation and comparison with experimental data，we suppose that the PTS facility will have similar X-ray radiation productivity as the Saturn facility operating in the long-pulse mode.