A 4-MA linear transformer driver for X-ray generation

作者：Hao Wei, Mengtong Qiu, Xiaofeng Jiang, Zhiguo Wang, Hongyu Jiang, Weibo Yao, Dingguo Lai, Hanyu Wu, Cheng Lou, Jiachen Wang, Yaorong Yang, Fengju Sun, Mo Li, Liangping Wang, Qifu Xu, Pengchao Li, Sen Yang, Yi Shen, Zhen Wu, Jinhua Wang, Wei Liu, Hailiang Yang, Wei Wu, Aici Qiu · 发表于：Matter and Radiation at Extremes · 年份：2025 · DOI：10.1063/5.0273536 · 被引用次数：6 · 研究领域：Pulsed Power Technology Applications、Gyrotron and Vacuum Electronics Research、Laser-Plasma Interactions and Diagnostics

We have designed, assembled, and tested a 4-MA, 60-ns fast linear transformer driver (LTD), which is the first operating generator featuring multiple LTD modules connected in parallel. The LTD-based accelerator comprises six modules in parallel, each of which has ten-stage cavities stacked in series. The six LTD modules are connected to a water tank of diameter 6 m via a 3-m-long impedance-matched deionized water-insulated coaxial transmission line. In the water tank, the electrical pulses are transmitted down by six horizontal tri-plate transmission lines. A 2.1-m-diameter two-level vacuum insulator stack is utilized to separate the deionized water region from the vacuum region. In the vacuum, the currents are further transported downstream by a two-level magnetically insulated transmission-line and then converged through four post-hole convolutes. Plasma radiation loads or bremsstrahlung electron beam diodes serve as loads that are expected to generate intense soft X rays or warm X rays. The machine is 3.2 m in height and 22 m in outer diameter, including support systems such as a high-voltage charge supply, magnetic core reset system, trigger system, and support platform for inner stalk installation and maintenance. A total of 1440 individual ±100-kV multi-gap spark switches and 2880 individual 100-kV capacitors are employed in the accelerator. A total of 12 fiber-optic laser-controlled trigger generators combining photoconductive and traditional gas spark switch technolog...