Design and performance of a pulsed power-driven x-ray source for flash radiography

Autor: Feng Li, Shuping Feng, Le Xu, Lin Chen, An He, Li Yong, Meng Wang, Yuanjun Zhang, Liangji Zhou, Wenkang Zou, Yue Zhao, Bing Wei, Weiping Xie, Hongtao Li, Wei Wu, Kang Junjun, Minghe Xia, Zhi Wang, Yuan Jianqiang, Lidong Geng, Wenhui Han, Fan Guo, Jiang Jihao
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Physical Review Accelerators and Beams, Vol 24, Iss 11, p 110401 (2021)
ISSN: 2469-9888
Popis: The design and test results of a pulsed power-driven X-ray source which is named Hawkeye-I are described. The Hawkeye-I is developed to execute flash X-ray radiography. It is a six-stage induction voltage adder and terminated by a positive polarity rod-pinch diode. The six stages are identical and the prime energy of each stage is provided by a tesla transformer elevating the output voltage from a discharge brick which consists of two 4 μF capacitors and a three-electrode gas switch. Comparing to the induction voltage adders driven by Marx generators, the numbers of gas switches and capacitors in the energy storage sections of Hawkeye-I decrease significantly. The Hawkeye-I can produce a maximum output voltage of about 4.2 MV. The corresponding X-ray source spot size and dose at 1 m are 1.4 mm and 17.9 rad, respectively. Fifty consecutive shots have been conducted to evaluate the reliability of the machine and 98% of the shots are successful. Furthermore, as the energy propagating in the accelerator is mainly determined by seven laser-triggered gas switches, the Hawkeye-I is capable of controlling the timing of the X-ray pulse accurately.
Databáze: OpenAIRE