Development of a fusion-oriented pulsed power module

• Main Authors: Lin Chen, Wenkang Zou, Liangji Zhou, Meng Wang, Yu Liu, Laqun Liu, Mingmeng Deng, Dagang Liu, Jianping Zhu, Kenan Lian, Bing Wei, Qing Tian, Fan Guo, An He, Shuping Feng, Weiping Xie, Lin Meng, Jianjun Deng, Yue Zhao, Le Zhang, Feng Li, Jihao Jiang, Jie Wang, Yuanjun Zhang, Yong Li, Yingmin Dai, Wenhui Han, Ye Li, Bin Yao, Yu Ding, Junjun Kang
• Format: Article
• Language: English
• Published: American Physical Society 2019-03-01
• Series: Physical Review Accelerators and Beams
• Online Access: http://doi.org/10.1103/PhysRevAccelBeams.22.030401

We present a fusion-oriented pulsed power module M-50, which is based on the linear transformer driver (LTD) and magnetically insulated inductive voltage adder (MIVA) technologies. The module M-50, which consists of 50 identical LTD cavities connected in series, is one of the 60 modules of a fusion-scale pulsed power facility. M-50 is a comprehensive test bed for LTD integration and engineering validation. Each cavity consists of 32 bricks and has an output capability of 90  kV/1.0  MA/120  ns to the matched load. The output power of the 50 cavities is added with a MIVA, whose operation impedance is approximately matched to both source and load. Therefore, it has a nominal output capability of 4.5  MV/1.0  MA/120  ns to 4.5  Ω resistive load. The module is divided into five groups, and each group has ten cavities in series. The inner stalk of the MIVA is divided into five main straight segments. Conical transitions are employed to connect adjacent straight segments. The output end of M-50 is shrunk and connected a ring-cathode diode, whose cathode and anode radii are identical to those of a 12-m-long transmission line in the fusion facility. In this paper, the general concept of the fusion accelerator, the physical design, engineering design and development progress of M-50 are described for the first time.