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Method for detecting damage of first wall of tokamak fusion reactor with polarized light

A tokamak and polarized light technology, applied in the direction of optical testing flaws/defects, polarization effects, etc., can solve problems such as surface damage

Inactive Publication Date: 2013-05-01
中国人民解放军陆军军官学院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem of the present invention is to overcome the deficiencies of the prior art and provide a method for detecting the damage of the first wall of the Tokamak fusion reactor with polarized light. Rapid detection of surface material changes

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  • Method for detecting damage of first wall of tokamak fusion reactor with polarized light
  • Method for detecting damage of first wall of tokamak fusion reactor with polarized light

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Embodiment Construction

[0019] Specific embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0020] Such as figure 1 Shown is a schematic diagram of the optical path implemented in the present invention.

[0021] Step 1 Set linearly polarized light source 1. (The linearly polarized light source 1 is a visible / near-infrared laser. This example uses a laser source with a wavelength of 650nm and an adjustable polarized light vibration plane.) The linearly polarized light source 1 is fixed on a bracket 2 that can adjust the angle, such as figure 1 As shown, the linearly polarized light source 1 is aimed at the first wall surface 3 .

[0022] Step 2 Adjust the position of the first wall. The polarized incident light is irradiated on the first wall surface 3 at an incident angle of about θ=58°.

[0023] Step 3 Determine the position of the probe 4 of the polarization analyzer. The pro...

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Abstract

The invention discloses a method for detecting damage of a first wall of a tokamak fusion reactor with polarized light. A detection system comprises an optical table bracket, a polarized light source, a polarization analysis meter, a detection probe and the detected first wall. After lasers with the specific wavelength emitted by the polarized light source are reflected by the surface of the first wall, reflected light circular polarization components are obtained by the polarization analysis meter and the detection probe, and the detection for changes of a material on the surface of the first wall can be achieved. The method differs from the common polarized light detection method, an incident light vibration plane is rotated near a Brewster angle, a stockes vector locus of reflected light in a Poincare sphere is utilized, and quick measurement for the reflected light circular polarization components of the first wall is achieved. The method provides a feasible detection method for surface damage of the first wall of the tokamak fusion reactor.

Description

technical field [0001] The invention relates to the field of polarized light detection of damage to the first wall of a Tokamak fusion reactor, in particular to realizing the detection of damage to the first wall by using the circular polarization component of light reflected from the first wall. Background technique [0002] The damage of the first wall material is one of the key problems in the commercial operation of magnetic confinement fusion reactors. When the Tokamak fusion reactor is in normal operation, the first wall is not only strongly irradiated by high-energy neutrons (14MeV), helium atoms (3.5MeV) and photon energy emitted by high-temperature plasma, but also by the flow of high-energy escaped particles. Impacts, especially plasma discharges or plasma ruptures, generate a large number of high-energy escaped electrons that strike the first wall surface material, causing severe localized damage that renders the component nonfunctional and requires replacement. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/21G01N21/88
Inventor 杨锦宏储德林杨溢汪卫华韩双喜陶安马书炳陈宇王平麻晓敏梅洛勤邓海飞王俊潘保国王保明史博单会会张强华王鹏
Owner 中国人民解放军陆军军官学院
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