Method for detecting damage of first wall of fusion reactor in real time based on optical coherence tomography

An optical coherence tomography, real-time detection technology, used in fusion reactors, thermonuclear fusion reactors, optical testing flaws/defects, etc. clear image effect

Inactive Publication Date: 2013-10-09
中国人民解放军陆军军官学院
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Existing detection methods are difficult to realize real-time

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  • Method for detecting damage of first wall of fusion reactor in real time based on optical coherence tomography
  • Method for detecting damage of first wall of fusion reactor in real time based on optical coherence tomography

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[0023] The specific embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solutions of the present invention in detail.

[0024] Such as figure 1 As shown, the detection system adopted by the present invention is composed of an optical platform support, a broadband light source, an optical fiber coupler, a self-focusing lens, a detector, an amplifier, a data acquisition, and a first wall to be detected. The laser light emitted by the broadband light source is divided into two beams by a 2×2 fiber coupler, one beam is irradiated to the reference mirror through the self-focusing lens, and reflected by the reference mirror as the reference light. Another beam of light irradiates the first wall of the Tokamak fusion stack through the self-focusing lens and the lens, and is reflected by the first wall as signal light. The two beams of light meet in the fiber coupler to generate an interference signal. The detector ...

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Abstract

The invention discloses a method for detecting damage of a first wall of a fusion reactor in real time based on optical coherence tomography. A detection system comprises a broadband light source, an optical fiber coupler, a self-focusing lens, a detector, an amplifier, a data acquisition unit and the detected first wall. The broadband laser light is divided into two light beams through the 2*2 optical fiber coupler; one light beam is irradiated to a reference mirror and serves as reference light after being reflected; the other light beam is irradiated to the first wall of the fusion reactor and serves as signal light after being reflected by the first wall; an interference signal is generated in the optical fiber coupler by the two light beams; the interference signal is received by the detector and is amplified and processed by a computer to rebuild a real-time three-dimensional depth image of the damage of the first wall; the obtained image is compared with a standard image to visually and conveniently obtain a situation of the damage of the first wall. The invention is based on the optical coherence tomography, is high in resolution ratio and clear in image, and provides a feasible detection method for the damage of the surface and interior of the first wall of the fusion reactor.

Description

technical field [0001] The present invention relates to the field of optical coherence tomography (Optical Coherence Tomography, OCT) technology to detect the damage of the first wall of the Tokamak fusion reactor. Real-time detection of first wall damage. Background technique [0002] The material problem of the first wall of the future fusion reactor is one of the bottlenecks in the realization of magnetic confinement fusion. In the Tokamak fusion reactor, the first wall is subjected to high-energy neutrons (14MeV), helium atoms (3.5MeV), and photon energy (evenly deposited on the first wall, accounting for about 10% of the total surface heat load) In addition to the strong irradiation effect of 20-60%), it will also be hit by the flow of high-energy escaped particles, especially when the plasma discharges or the plasma ruptures, a large number of high-energy escaped electrons will be generated to hit the surface material of the first wall, causing serious local damage ,...

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Application Information

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IPC IPC(8): G01N21/88G21B1/25
CPCY02E30/10
Inventor 王平汪卫华杨锦宏麻晓敏祁俊力张强华储德林邓海飞
Owner 中国人民解放军陆军军官学院
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