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

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.

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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Problems solved by technology

[0004] The purpose of the present invention is to design a method for measuring the impurity concentration applied to the magnetic confinement fusion reactor device. By synchronously measuring the charge exchange composite spectrum, also known as the impurity spectrum, the neutral beam emission spectrum and the bremsstrahlung near the two wavelengths, And use the bremsstrahlung intensity ratio system for calibration to solve the problem of accurate measurement of impurity ion concentration in the magnetic confinement fusion device under the condition that the optical path is polluted

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