All-optical-fiber on-line radiation dose measuring system

A radiation dose and measurement system technology, applied in dosimeters and other directions, can solve the problems of poor stability, performance degradation, and high system complexity, and achieve the effect of achieving stability and simplification

Inactive Publication Date: 2012-06-27
BEIHANG UNIV
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Problems solved by technology

[0008] In order to solve the problems of high system complexity, poor stability and performance degradation affected by radiation in the existing radiation dose measurement system, the present invention proposes an all-fiber online radiation dose measurement system. It includes a light source for providing optical signals, a 2×2 coupler for light splitting, a reference optical path, a measurement optical path, a dual-channel optical power meter for measuring the output optical power of the two optical paths, and a computer. The measurement optical path is used for external Composed of anti-irradiation conductive optical fiber for optical signal input and output between the radiation environment and a sensitive optical fiber for measuring radiation dose, used to measure the radiation-induced transmission loss of the sensitive optical fiber in the radiation environment

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Embodiment Construction

[0015] The specific embodiment of the present invention provides an all-fiber online radiation dose measurement system, such as figure 1 As shown, it includes a light source 1 for providing optical signals, a 2×2 coupler 2 for light splitting, a reference optical path 3, a measuring optical path 4, a dual-channel optical power meter 5 for measuring the output optical power of the two optical paths, and a The computer 6 displayed by signal processing, the measurement optical path 4 is composed of radiation-resistant conductive optical fiber used for input and output of optical signals between the outside world and the radiation environment and sensitive optical fiber used for measuring radiation dose, used for measuring the radiation-induced transmission of sensitive optical fibers in the radiation environment loss.

[0016] specific, figure 1 The light source 1 is a stable SLD light source with a working wavelength in the communication band (1310nm or 1550nm); the anti-irradi...

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Abstract

The invention discloses an all-optical-fiber on-line radiation dose measuring system. The system comprises a light source for providing a light signal, a 2*2 coupler for light splitting, a reference light path, a measuring light path, a double-channel light power meter for measuring the output light power of the two light paths, and a computer, wherein the measuring light path consists of anti-irradiation conduction optical fibers and radiation sensitive optical fibers and is used for measuring the radiation transmission loss of the sensitive optical fibers in a radiation environment. An all-optical-fiber remote radiation dose on-line monitoring system suitable for measuring radiation dose in the radiation environment for a long time is provided and is simple and stable.

Description

technical field [0001] The invention relates to a radiation dose testing system, in particular to a system based on the radiation-induced attenuation characteristics of special optical fibers, which is suitable for nuclear power plants, 60 Co radiation source, radiation dose online test system for radiation dose monitoring in radiation medicine with all-fiber structure. Background technique [0002] Radiation devices are widely used in fields such as industry, agriculture, medical treatment, national defense, teaching and scientific research. In order to make reasonable use of these devices and ensure the health and safety of relevant workers, it is necessary to monitor the radiation dose of the radioactive device and its surrounding environment. In order to ensure the safe operation of nuclear power plants, the radiation dose of each part of the nuclear power plant and its surrounding environment must be monitored in real time. [0003] The currently widely used radiation...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/02
Inventor 金靖王学勤郭建华宋镜明杜士森
Owner BEIHANG UNIV
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