High-sensitive radiography system utilizing a pulse x-ray generator and a night-vision CCD camera (MLX)

Eiichi Sato; Michiaki Sagae; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Takashi Inoue; Akira Ogawa; Shigehiro Sato; Toshio Ichimaru; Kazuyoshi Takayama

doi:10.1117/12.725351

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29 January 2007 High-sensitive radiography system utilizing a pulse x-ray generator and a night-vision CCD camera (MLX)

Eiichi Sato, Michiaki Sagae, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru, Kazuyoshi Takayama

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Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 627941 (2007) https://doi.org/10.1117/12.725351
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

High-sensitive radiography system utilizing a kilohertz-range stroboscopic x-ray generator and a night-vision CCD camera (MLX) is described. The x-ray generator consists of the following major components: a main controller, a condenser unit with a Cockcroft-Walton circuit, and an x-ray tube unit in conjunction with a grid controller. The main condenser of about 500 nF in the unit is charged up to 100 kV by the circuit, and the electric charges in the condenser are discharged to the triode by the grid control circuit. The maximum tube current and the repetition rate are approximately 0.5 A and 50 kHz, respectively. The x-ray pulse width ranges from 0.01 to 1.0 ms, and the maximum shot number has a value of 32. At a charging voltage of 60 kV and a width of 1.0 ms, the x-ray intensity obtained without filtering was 6.04 μGy at 1.0 m per pulse. In radiography, an object is exposed by the pulse x-ray generator, and a radiogram is taken by an image intensifier. The image is intensified by the CCD camera, and a stop-motion image is stored by a flash memory device using a trigger delay device. The image quality was improved with increases in the x-ray duration, and a single-shot radiography was performed with durations of less than 1.0 ms.

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Eiichi Sato, Michiaki Sagae, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru, and Kazuyoshi Takayama "High-sensitive radiography system utilizing a pulse x-ray generator and a night-vision CCD camera (MLX)", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627941 (29 January 2007); https://doi.org/10.1117/12.725351

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