High energy X-ray spot size measurement with rollbar

Li Qin; Wang Yi; Li Chenggang; Li Hong; Qi Shuangxi; Liu Yunlong; Cheng Jinming; Li Tiantao; Long Quanhong

doi:10.11884/HPLPB201628.125106

Volume 28 Issue 04

Mar. 2016

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Article Navigation > High Power Laser and Particle Beams > 2016 > 28(04): 045106

Zheng Zheng, Li Hui, Mei Qiliang. Research on in-core special material heating rate calculation[J]. High Power Laser and Particle Beams, 2017, 29: 016019. doi: 10.11884/HPLPB201729.160334

Citation:

Li Qin, Wang Yi, Li Chenggang, et al. High energy X-ray spot size measurement with rollbar[J]. High Power Laser and Particle Beams, 2016, 28: 045106. doi: 10.11884/HPLPB201628.125106

Zheng Zheng, Li Hui, Mei Qiliang. Research on in-core special material heating rate calculation[J]. High Power Laser and Particle Beams, 2017, 29: 016019. doi: 10.11884/HPLPB201729.160334

Citation:

Li Qin, Wang Yi, Li Chenggang, et al. High energy X-ray spot size measurement with rollbar[J]. High Power Laser and Particle Beams, 2016, 28: 045106. doi: 10.11884/HPLPB201628.125106

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High energy X-ray spot size measurement with rollbar

doi: 10.11884/HPLPB201628.125106

1.
Institute of Fluid Physics,CAEP,P.O.Box 919-106,Mianyang 621900,China

Received Date: 2015-09-19
Rev Recd Date: 2015-12-23
Publish Date: 2016-04-15

Abstract

Abstract

The X-ray spot size is a critical parameter for flash radiography facility which degrades resolution in the flash radiography. It is difficult to measure the X-ray spot size in the condition of intense radiation and its penetrability. This paper describes a rollbar used to measure the X-ray focal spot size. The edge spread function(ESF), line spread function(LSF) and modulation transfer function(MTF) of the X-ray spot are obtained from the rollbar image data, and the X-ray spot size is determined by the MTF. In the experiment of Dragon-Ⅱ linear induction accelerator downstream and target, the X-ray spot size is measured and the results are analyzed.
- high energy X-ray,
- spot size,
- modulation transfer function,
- rollbar

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