An intense pulsed hard X-ray source based on series diode technology

Lai Dingguo; Qiu Mengtong; Yang Shi; Su Zhaofeng; Xu Qifu; Cong Peitian; Ren Shuqing

doi:10.11884/HPLPB202133.200269

Volume 33 Issue 3

Mar. 2021

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Lai Dingguo, Qiu Mengtong, Yang Shi, et al. An intense pulsed hard X-ray source based on series diode technology[J]. High Power Laser and Particle Beams, 2021, 33: 035001. doi: 10.11884/HPLPB202133.200269

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Lai Dingguo, Qiu Mengtong, Yang Shi, et al. An intense pulsed hard X-ray source based on series diode technology[J]. High Power Laser and Particle Beams, 2021, 33: 035001. doi: 10.11884/HPLPB202133.200269

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An intense pulsed hard X-ray source based on series diode technology

doi: 10.11884/HPLPB202133.200269

State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China

Received Date: 2020-09-22
Rev Recd Date: 2020-11-24

Available Online: 2021-03-30

Publish Date: 2021-03-05

Abstract

Abstract

There are formidable difficulties to generate intense pulsed hard X-ray. The lack of high fidelity high fluence X-ray source has become a restriction factor of SGEMP effect research. The method for intense large-area pulsed hard X- ray production by using a series diode and the radiation parameters are presented in this paper. Flash II accelerator was refined to generate a fast rise time voltage pulse, and a two-stage series diode was developed for coupling electrical energy of high-voltage generator to a low endpoint voltage bremsstrahlung diode via two diodes in series. The X-rays generated by each diode added in space to improve intensity. A dynamic support system was invented to solve the insulation problem of the floating electrode and double-ring cathodes were designed to improve emission uniformity. The experimental results show that the two-stage series diode can work stably under ～700 kV voltage and ～310 kA current, the average energy of X rays is 87 keV, and the fluence is about 36 mJ/cm² over 500 cm² area with dose uniformity 2∶1 at 5 cm from the last converter.
- series diode,
- high-current electron beam,
- pulsed hard X-ray,
- Flash II accelerator,
- radiation simulation

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References(12)

References

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