A kind of impurity concentration measurement method applied to magnetic confinement fusion reactor device

A technology of magnetic confinement fusion and impurity concentration, applied in fusion reactors, thermonuclear fusion reactors, nuclear reactors, etc., to achieve high spatial resolution and good spatial resolution

CN111933309BActive Publication Date: 2022-07-26SOUTHWESTERN INST OF PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-07-26

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Abstract

The invention belongs to the technical field of impurity density / concentration monitoring in fusion reactor operation, and in particular relates to an impurity concentration measurement method applied to a magnetic confinement fusion reactor device, comprising the following steps: Step 1: injecting hydrogen into a neutral beam system on the magnetic confinement fusion device or its isotope into the plasma to generate neutral beam emission spectrum and excited state hydrogen-like ions, and then radiate charge exchange composite spectrum; step 2: measure the corresponding spectrum and the adjacent wavelengths of the corresponding spectrum respectively through the charge exchange composite spectrum diagnostic system. Bremsstrahlung, and use bremsstrahlung to calibrate the charge-exchange composite spectrum system; Step 3: Ratio of the charge-exchange composite spectrum of the impurity radiation to the neutral beam emission spectrum to obtain the impurity concentration R. The invention realizes the calibration of the system and the acquisition of impurity concentration in the process of the optical path being polluted by synchronously measuring the charge exchange composite spectrum, the neutral beam emission spectrum and the bremsstrahlung of the two adjacent wavelengths.
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Description

technical field

[0001] The invention belongs to the technical field of impurity density / concentration monitoring in fusion reactor operation, in particular to an impurity concentration measurement method applied to a magnetic confinement fusion reactor device. Background technique

[0002] On the magnetic confinement fusion device, the monitoring of impurity density (concentration) is of great significance to the operation of the fusion reactor. At present, the method of measuring impurity density (concentration) in the world is mainly by measuring the linear radiation intensity of the impurity spectrum and performing absolute intensity calibration to obtain the impurity density (concentration); the key and difficulty of this method lies in the precise absolute radiation intensity. Calibration and neutral beam attenuation calculations. In addition, in the process of measuring impurities by ultraviolet spectroscopy, branching ratio is a more common method. However, this bra...

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and embodiment, the present invention is further introduced:

[0032] like Figure 1-2 As shown in the figure, a method for measuring impurity concentration applied to a magnetic confinement fusion reactor device designed by the present invention is based on the charge-exchange composite spectrum, neutral beam emission spectrum and the bremsstrahlung of the two adjacent wavelengths measured by the charge-exchange composite spectrum diagnosis. Radiation; the calibration light source of the system comes from the bremsstrahlung emitted by the plasma in the fusion reactor device; the impurity concentration is determined by the intensity ratio of the corresponding bremsstrahlung, the charge exchange composite spectral intensity, the neutral beam emission spectral intensity, and the associated atomic ion reaction cross section data decision;

[0033] In addition, the present invention utilizes the charge-exchange composite spect...