A system and method for measuring deuterium-tritium fuel ratio in plasma

Abstract

The present invention discloses a system and method for measuring the deuterium-tritium fuel ratio in plasma, comprising an electron cyclotron radiometer, a microwave reflectometer, a Mirnov probe, electron cyclotron radiation imaging, a first collector, a central processing unit, an interferometer, a dynamic Stark effect spectrometer, a magnetic coil, a charge exchange spectrometer, a second collector, a high-performance computer, and a TAE frequency real-time processor. The deuterium-tritium fuel ratio can be obtained by accurately measuring the frequency of the toroidal Alfvén eigenmode in the burning plasma and accurately calculating the TAE frequency in the deuterium-deuterium plasma under the same conditions. Compared to the existing technology, even if the burning plasma is in an uneven distribution state, it can be measured as a whole, and the deuterium-tritium fuel ratio can be calculated based on the measured data, thereby providing a safe, accurate, and rapid method for measuring the deuterium-tritium fuel ratio for the heating effect of fusion product alpha particles, the high and low confinement mode conversion power thresholds, and the confinement time.

Description

Technical Field

[0001] The present invention relates to the field of nuclear science and technology, and in particular to a system and method for measuring the deuterium-tritium fuel ratio in plasma. Background Art

[0002] Nuclear fusion energy is a safe, pollution-free, clean energy source. It is the final step in the three-step nuclear energy development strategy of "thermal reactors-fast reactors-fusion reactors" and may also be the ultimate solution to humanity's energy problems. Nuclear fusion energy is primarily produced through the fusion of hydrogen isotopes. Common fusion reactions include deuterium-deuterium reactions, deuterium-helium reactions, and deuterium-tritium reactions. Deuterium-tritium fusion reactions have a large cross section and high reactivity rate, making them the best choice for achieving nuclear fusion. Deuterium-tritium experiments at the European Union's JET facility and the US TFTR facility have demonstrated that the effective mass of the plasma has a significant impact on the heating effect of the fusion product alpha particles, the power threshold for high- and low-confinement mode conversion, and the confinement time. The effective mass of the plasma depends on the ratio of deuterium to tritium in the fuel, meaning that measuring the deuterium-tritium ratio directly affects the confinement performance of future fusion reactors. Therefore, it is imperative to develop a method for safely, accurately, and rapidly measuring the deuterium-tritium fuel ratio.

[0003] Currently, plasma diagnostics capable of measuring the deuterium-tritium fuel ratio include neutral particle analyzers (NPA) and laser-induced breakdown spectrometers (LIBS). PNA primarily determines the deuterium-tritium ratio by counting uncharged deuterium and tritium particles. This diagnostic can only measure deuterium and tritium particles that escape from the plasma confinement region. It accurately reflects the deuterium-tritium ratio only when the plasma is uniformly distributed, but real tokamak plasmas are often non-uniform. LIBS is an in-situ measurement diagnostic. It uses a laser to strike deuterium and tritium in a specific region, generating a spectrum of specific wavelengths. The spectral signatures are then measured to obtain relevant information about deuterium and tritium. This diagnostic has excellent spatial resolution and can only measure parameters in a limited region, but it is difficult to provide a comprehensive assessment of the plasma's deuterium-tritium fuel ratio. With the upcoming operation of the International Thermonuclear Test Reactor (ITR), the demand for deuterium-tritium fuel ratio measurement technology is becoming increasingly urgent. Summary of the Invention

[0004] The technical problem to be solved by this application is that the existing deuterium-tritium fuel ratio measurement technology is unable to make an overall evaluation of the unevenly distributed burning plasma, and thus is unable to calculate the deuterium-tritium fuel ratio in the unevenly distributed burning plasma. The purpose is to provide a system and method for measuring the deuterium-tritium fuel ratio in plasma, which solves the problem of being unable to calculate the deuterium-tritium fuel ratio in the unevenly distributed burning plasma.

[0005] The present invention is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides a system for measuring the deuterium-tritium fuel ratio in plasma, comprising:

[0007] Electron cyclotron radiometer, microwave reflectometer, Milnov probe, electron cyclotron radiation imaging, first collector, central processing unit, interferometer, dynamic Stark effect spectrometer, magnetic coil, charge exchange spectrometer, second collector, high-performance computer, TAE frequency real-time processor and display;

[0008] The electron cyclotron radiometer, the microwave reflectometer, the Milnov probe, and the electron cyclotron radiation imaging are connected to the first collector; the first collector is connected to the central processing unit;

[0009] The interferometer, the dynamic Stark effect spectrometer, the magnetic coil, and the charge exchange spectrometer are connected to the second collector; the second collector is connected to the high-performance computer;

[0010] The central processing unit, the high performance computer and the TAE frequency real-time processor are connected;

[0011] The TAE frequency real-time processor is connected to the display.

[0012] In the above technical solution, the deuterium-tritium experiment of the JET device showed that the deuterium-tritium ratio is closely related to the frequency of the toroidal Alfvén eigenmode (TAE). By measuring the relevant information indirectly, accurately measuring the frequency of the toroidal Alfvén eigenmode in the burning plasma and accurately calculating the TAE frequency in the deuterium-deuterium plasma under the same conditions, the deuterium-tritium fuel ratio can be obtained.

[0013] The burning plasma's frequency, displacement, modulus, electron density, and magnetic field distribution are measured using an electron cyclotron radiometer, microwave reflectometer, Mirnov probe, electron cyclotron radiation imaging, interferometer, dynamic Stark effect spectrometer, magnetic coil, and charge exchange spectrometer. High-performance computers and central processing units process this data to determine the frequency, displacement vector, and modulus of the toroidal Alfvén eigenvalues. The frequency, displacement vector, and modulus of the toroidal Alfvén eigenvalues are input into a TAE frequency processor to calculate the TAE frequency in the deuterium-deuterium plasma. The deuterium-tritium fuel ratio can be calculated from the known toroidal Alfvén eigenmode frequencies and the TAE frequency in the deuterium-deuterium plasma under the same conditions.

[0014] Compared with the existing technology, the above technical solution can measure the combustion plasma as a whole even if it is in an unevenly distributed state, and calculate the deuterium-tritium fuel ratio based on the measurement data.

[0015] In an optional embodiment, the electron cyclotron radiometer is used to measure the frequency and displacement vector of the toroidal Alfvén eigenmode, the microwave reflectometer is used to measure the frequency and displacement vector of the toroidal Alfvén eigenmode, the Milnov probe is used to measure the frequency and toroidal mode number of the toroidal Alfvén eigenmode, and the electron cyclotron radiation imaging is used to determine the poloidal mode number of the toroidal Alfvén eigenmode.

[0016] In an optional embodiment, the first collector is mainly used to collect the frequency, displacement vector, toroidal modulus and poloidal modulus of the toroidal Alfvén eigenmode measured by an electron cyclotron radiometer, a microwave reflectometer, a Milnov probe and electron cyclotron radiation imaging, and input the frequency, displacement vector, toroidal modulus and poloidal modulus of the toroidal Alfvén eigenmode into a central processor for calculation and processing.

[0017] In an optional embodiment, the interferometer is used to measure the electron density of the burning plasma, the dynamic Stark effect spectrometer is used to measure the minimum safety factor and calculate the safety factor profile, the magnetic coil is mainly used to measure the magnetic field information of the burning plasma discharge, and the charge exchange spectrometer is mainly used to measure the rotation frequency information of the burning plasma.

[0018] In an optional embodiment, the second collector is mainly used to collect measurement information of the interferometer, dynamic Stark effect spectrometer, magnetic coil, and charge exchange spectrometer, and input the measurement information into a high-performance computer for calculation and processing.

[0019] In an optional embodiment, the TAE frequency real-time processor is used to compare data calculated and processed by the high-performance computer and the central processing unit and calculate the TAE frequency and the deuterium-tritium fuel ratio in the deuterium-deuterium plasma.

[0020] A second aspect of the present invention provides a method for measuring the deuterium-tritium fuel ratio in a plasma, comprising measuring the measured frequency, measured position vector, and measured mode information of a toroidal Alfvén eigenmode during plasma operation by an electron cyclotron radiometer, a microwave reflectometer, a Milnov probe, and electron cyclotron radiation imaging;

[0021] Obtain electron density, safety factor, plasma current and rotation frequency from plasma through interferometer, dynamic Stark effect spectrometer, magnetic coil and charge exchange spectrometer;

[0022] The electron density, safety factor, plasma current and rotation frequency are numerically simulated using a high-performance computer to obtain the simulated frequency, simulated displacement vector and simulated modulus of the toroidal Alfvén eigenmode.

[0023] Compare the measured frequency with the simulated frequency, the measured position vector with the simulated position vector, and the measured analog-to-digital information with the simulated analog-to-digital information one by one;

[0024] If the three sets of comparison data are consistent, the TAE frequency in the deuterium-deuterium plasma under the same conditions is calculated;

[0025] Based on the relationship between the deuterium-tritium ratio and the frequency of the toroidal Alfvénben, the deuterium-tritium fuel ratio is calculated according to the TAE frequency in the deuterium-deuterium plasma.

[0026] In an optional embodiment, a method for measuring the frequency and position vector of the toroidal Alfvén eigenmode by an electron cyclotron radiometer during plasma operation is as follows:

[0027] During the plasma discharge process, the signal collected by the electron cyclotron radiometer is Fourier transformed, and the frequency range of the toroidal Alfvén eigenmode is found through spectrum analysis, and the measurement frequency of the toroidal Alfvén eigenmode is obtained.

[0028] The frequency range of the toroidal Alfvén eigenmode is numerically filtered to obtain the temperature perturbation;

[0029] According to the temperature perturbation Calculate and get the displacement vector ξ; where γ=5 / 3, is the temperature gradient, δT e is the temperature disturbance, T e is the electron temperature.

[0030] In an optional embodiment, a method for measuring the frequency and position vector of the toroidal Alfvén eigenmode by microwave reflectometry during plasma operation is as follows:

[0031] During the plasma discharge process, the signal collected by the microwave reflectometer is Fourier transformed, and the frequency range of the toroidal Alfvén eigenmode is found through spectrum analysis, and the measurement frequency of the toroidal Alfvén eigenmode is obtained.

[0032] The frequency range of the toroidal Alfvén eigenmode is numerically filtered to obtain the density perturbation;

[0033] According to the density perturbation Calculate and obtain the second displacement vector ξ; where, is the density gradient, δn e is the density perturbation, n e is the electron density.

[0034] In an optional embodiment, based on the relationship between the deuterium-tritium ratio and the frequency of the toroidal Alfvénben, a method for calculating the deuterium-tritium fuel ratio according to the TAE frequency in the deuterium-deuterium plasma is as follows:

[0035]

[0036]

[0037] in, is the TAE frequency in deuterium-deuterium plasma, B t is the magnetic field, <n>is the line average electron density, safety factor q = 1.5, effective mass A eff =2, R is the maximum radius of the fusion device, n D , n T are the concentrations of deuterium and tritium, respectively, and f measured is the TAE frequency measured during the deuterium-tritium experiment, and K(n) is a calibration factor used to correct the deviation of the electron density and safety factor at the local position of the toroidal Alfvén eigenmode. <n>and TAE frequency deviation caused by q=1.5.

[0038] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0039] Compared with the existing technology, the above technical solution can measure the burning plasma as a whole even if it is in an unevenly distributed state, and calculate the deuterium-tritium fuel ratio based on the measurement data, thereby providing a safe, accurate and fast method for measuring the deuterium-tritium fuel ratio for the heating effect of fusion product α particles, high and low confinement mode conversion power thresholds and confinement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0041] Figure 1 A schematic structural diagram of a system for measuring the deuterium-tritium fuel ratio in plasma provided in one embodiment of the present application;

[0042] Figure 2 A flow chart of a method for measuring the deuterium-tritium fuel ratio in plasma provided in one embodiment of the present application.

[0043] Markings and corresponding parts names in the accompanying drawings:

[0044] 1-Electron cyclotron radiometer, 2-Microwave reflectometer, 3-Milnov probe, 4-Electron cyclotron radiation imaging, 5-First collector, 6-Central processing unit, 7-Interferometer, 8-Dynamic Stark effect spectrometer, 9-Magnetic coil, 10-Charge exchange spectrometer, 11-Second collector, 12-High performance computer, 13-TAE frequency real-time processor, 14-Display. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0046] Example 1

[0047] Figure 1 A schematic diagram of the structure of a system for measuring the deuterium-tritium fuel ratio in plasma provided in Example 1 is shown in FIG. Figure 1 As shown, a system for measuring the deuterium-tritium fuel ratio in plasma includes an electron cyclotron radiometer 1, a microwave reflectometer 2, a Milnov probe 3, an electron cyclotron radiation imaging 4, a first collector 5, a central processing unit 6, an interferometer 7, a dynamic Stark effect spectrometer 8, a magnetic coil 9, a charge exchange spectrometer 10, a second collector 11, a high-performance computer 12, a TAE frequency real-time processor 13 and a display 14.

[0048] The electron cyclotron radiometer 1 is primarily used to measure the frequency and displacement vector of the toroidal Alfvén eigenmode. Fourier analysis of the raw signal collected by the electron cyclotron radiometer 1 reveals the frequency of the toroidal Alfvén eigenmode. The electron cyclotron radiometer 1 can also measure the temperature disturbance of the burning plasma, from which the displacement vector ξ of the toroidal Alfvén eigenmode can be calculated.

[0049] The calculation formula is

[0050]

[0051] Where, γ=5 / 3, is the temperature gradient, δT e is the temperature disturbance, T e is the electron temperature.

[0052] Microwave reflectometer 2 is primarily used to measure the frequency and displacement vector of the toroidal Alfvén eigenmode. Fourier analysis of the raw signal collected by microwave reflectometer 2 reveals the frequency of the toroidal Alfvén eigenmode. Microwave reflectometer 2 also measures the density perturbation of the burning plasma, from which the displacement vector ξ of the toroidal Alfvén eigenmode can be calculated.

[0053] The calculation formula is

[0054]

[0055] in, is the density gradient, δn e is the density perturbation, n e is the electron density.

[0056] Mirnov probe 3 is primarily used to measure the frequency and number of circumferential Alfvén eigenmodes. Fourier analysis is performed on the raw signal collected by Mirnov probe 3 to determine the frequency of the circumferential Alfvén eigenmodes. The number of circumferential Alfvén eigenmodes is determined by performing singular value decomposition (SVD) on the signal collected by Mirnov probe 3.

[0057] When the phase distribution collected by the Milnov probe 3 has a pair of peaks and troughs, the circumferential modulus is n=1; when the phase distribution has two pairs of peaks and troughs, the circumferential modulus is n=2, and so on.

[0058] Electron cyclotron radiation imaging 4 is primarily used to determine the poloidal mode of the toroidal Alfvén eigenmode. When the frequency and time are selected, electron cyclotron radiation imaging 4 can intuitively reveal the mode structure. When a pair of hot and cold spots appears in the imaging area, the poloidal mode is m = 1; when two pairs of hot and cold spots appear, the poloidal mode is m = 2, and so on.

[0059] The first collector 5 is mainly used to collect measurement data from the electron cyclotron radiometer 1 , the microwave reflectometer 2 , the Milnov probe 3 , and the electron cyclotron radiation imaging 4 . The specific data format must meet the data input format requirements of the central processor 6 .

[0060] The central processing unit 6 is mainly used to calculate and process the frequency, displacement vector and modulus information of the toroidal Alfvén mode, wherein the frequency of the toroidal Alfvén eigenmode is taken as the average value of the electron cyclotron radiometer 1, microwave reflectometer 2 and Milnov probe 3; the displacement vector of the toroidal Alfvén eigenmode is taken as the average value of the electron cyclotron radiometer 1 and microwave reflectometer 2; and the modulus of the toroidal Alfvén mode is taken from the measurement results of the Milnov probe 3 and the electron cyclotron radiation imaging 4.

[0061] Interferometer 7 is mainly used to measure electron density <n>, it is necessary to perform Abel inversion on the measured data and finally input the electron density distribution into the high-performance computer 12.

[0062] The dynamic Stark effect spectrometer 8 is mainly used to measure the minimum safety factor and needs to be combined with equilibrium inversion programs such as EFIT for equilibrium reconstruction, and finally input the safety factor profile into the high-performance computer 12.

[0063] The magnetic coil 9 is mainly used to measure the magnetic field of the plasma discharge and ultimately input the magnetic field information into the high-performance computer 12 .

[0064] The charge exchange spectrometer 10 is mainly used to measure the plasma rotation frequency and ultimately input the rotation frequency information into the high performance computer 12 .

[0065] The second collector 11 is mainly used to collect measurement information of the interferometer 7, dynamic Stark effect spectrometer 8, magnetic coil 9, and charge exchange spectrometer 10. The specific data format must meet the data input format requirements of the high-performance computer 12 and the TAE frequency real-time processor 13.

[0066] The high-performance computer 12 has a built-in eigenvalue NOVA-K program, which only requires two major data: density distribution and safety factor distribution for numerical solution. It is mainly used for the frequency, circumferential modulus, displacement vector and mode structure of TAE. The required input includes the electron density distribution, safety factor distribution, magnetic field strength and plasma rotation frequency measured by the acquisition interferometer 7, dynamic Stark effect spectrometer 8, magnetic coil 9 and charge exchange spectrometer 10.

[0067] The core component of the TAE frequency real-time processor 13 is the FPGA core, which is mainly used to compare the frequency, modulus and displacement vector output by the high-performance computer 12 and the central processing unit 6.

[0068] When all three are inconsistent, it indicates that the instability measured in the system is not the circumferential Alfvén eigenmode, and the deuterium-tritium ratio cannot be measured at this time;

[0069] When all three are consistent, it indicates that the instability measured in the system is the toroidal Alfvén eigenmode.

[0070] When the toroidal Alfvén eigenmode (TAE) is successfully determined, the TAE frequency real-time processor 13 calculates the TAE frequency in the deuterium-deuterium plasma under the same conditions based on the data input by the second collector 11. Finally, the formula Performing the calculation yields the deuterium-tritium fuel ratio.

[0071] The display 14 is mainly used to display the deuterium-tritium ratio in real time.

[0072] Example 2

[0073] Example 2 provides a method for measuring the deuterium-tritium fuel ratio in plasma based on Example 1.

[0074] Figure 2 A flow chart of a method for measuring the deuterium-tritium fuel ratio in plasma provided in Example 2 is as follows: Figure 2 As shown, a method for measuring the deuterium-tritium fuel ratio in plasma includes

[0075] S1. Measure combustion plasma data.

[0076] The measured frequency, measured position vector and measured mode number information of the toroidal Alfvén eigenmode are measured during plasma operation by an electron cyclotron radiometer 1 , a microwave reflectometer 2 , a Milnov probe 3 and an electron cyclotron radiation imaging 4 .

[0077] The electron density, safety factor, plasma current and rotation frequency are obtained from the plasma through the interferometer 7, the dynamic Stark effect spectrometer 8, the magnetic coil 9 and the charge exchange spectrometer 10.

[0078] Furthermore, the method for measuring the frequency and position vector of the toroidal Alfvén eigenmode by the electron cyclotron radiometer 1 during plasma operation is as follows:

[0079] During the plasma discharge process, the signal collected by the electron cyclotron radiometer 1 is Fourier transformed, and the frequency range of the toroidal Alfvén eigenmode is found through spectrum analysis to obtain the measurement frequency of the toroidal Alfvén eigenmode;

[0080] The frequency range of the toroidal Alfvén eigenmode is numerically filtered to obtain the temperature perturbation;

[0081] According to the temperature perturbation Calculate and get the displacement vector ξ; where γ=5 / 3, is the temperature gradient, δT e is the temperature disturbance, T e is the electron temperature.

[0082] Furthermore, the method for measuring the frequency and position vector of the toroidal Alfvén eigenmode by the microwave reflectometer 2 during plasma operation is as follows:

[0083] During the plasma discharge process, the signal collected by the microwave reflectometer 2 is Fourier transformed, and the frequency range of the circumferential Alfvén eigenmode is found through spectrum analysis to obtain the measurement frequency of the circumferential Alfvén eigenmode;

[0084] The frequency range of the toroidal Alfvén eigenmode is numerically filtered to obtain the density perturbation;

[0085] According to the density perturbation Calculate and obtain the second displacement vector ξ; where, is the density gradient, δn e is the density perturbation, n e is the electron density.

[0086] Furthermore, the frequency of the toroidal Alfvén eigenmode is taken as the average value of the electron cyclotron radiometer, microwave reflectometer, and Milnov probe; the displacement vector of the toroidal Alfvén eigenmode is taken as the average value of the electron cyclotron radiometer and microwave reflectometer; and the modulus of the toroidal Alfvén mode is taken from the measurement results of the Milnov probe and electron cyclotron radiation imaging.

[0087] S2. Compare the measured frequency with the simulated frequency, the measured position vector with the simulated position vector, and the measured analog-to-digital information with the simulated analog-to-digital information one by one.

[0088] When all three are inconsistent, it indicates that the instability measured in the system is not the circumferential Alfvén eigenmode, and the deuterium-tritium ratio cannot be measured at this time;

[0089] When all three are consistent, it indicates that the instability measured in the system is the toroidal Alfvén eigenmode.

[0090] Based on the above rules, the measured frequency is compared with the simulated frequency, the measured position vector is compared with the simulated position vector, and the measured analog information is compared with the simulated analog information. If there is any discrepancy between the three sets of comparison data, return to step S1 and re-measure the combustion plasma.

[0091] S3. If the three sets of comparison data are consistent, calculate the TAE frequency in the deuterium-deuterium plasma under the same conditions.

[0092] Among them, the formula for calculating the TAE frequency in deuterium-deuterium plasma under the same conditions is as follows:

[0093]

[0094] In the above formula, is the TAE frequency in deuterium-deuterium plasma, B t is the magnetic field, <n>is the line average electron density, safety factor q = 1.5, effective mass A eff =2, R is the maximum radius of the fusion device.

[0095] S4. Based on the relationship between the deuterium-tritium ratio and the frequency of the toroidal Alfvénben, the deuterium-tritium fuel ratio is calculated according to the TAE frequency in the deuterium-deuterium plasma.

[0096] The formula for calculating the deuterium-tritium fuel ratio based on the TAE frequency in deuterium-deuterium plasma is as follows:

[0097]

[0098] In the above formula, n D , n T are the concentrations of deuterium and tritium, respectively, and f measured is the TAE frequency measured during the deuterium-tritium experiment, and K(n) is a calibration factor used to correct the deviation of the electron density and safety factor at the local position of the toroidal Alfvén eigenmode. <n>and TAE frequency deviation caused by q=1.5.

[0099] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.< / n> < / n> < / n> < / n> < / n>

Claims

1. A system for measuring the deuterium-tritium fuel ratio in plasma, characterized in that include: Electron cyclotron radiometer (1), microwave reflectometer (2), Milnov probe (3), electron cyclotron radiation imaging (4), first collector (5), central processing unit (6), interferometer (7), dynamic Stark effect spectrometer (8), magnetic coil (9), charge exchange spectrometer (10), second collector (11), high performance computer (12) and TAE frequency real-time processor (13); The electron cyclotron radiometer (1), the microwave reflectometer (2), the Milnov probe (3), and the electron cyclotron radiation imaging (4) are connected to the first collector (5); the first collector (5) is connected to the central processing unit (6); The interferometer (7), the dynamic Stark effect spectrometer (8), the magnetic coil (9), the charge exchange spectrometer (10) are connected to the second collector (11); the second collector (11) is connected to the high performance computer (12); The central processing unit (6), the high performance computer (12) and the TAE frequency real-time processor (13) are connected.

2. A system for measuring the deuterium-tritium fuel ratio in plasma according to claim 1, characterized in that: The electron cyclotron radiometer (1) is used to measure the frequency and displacement vector of the toroidal Alfvén eigenmode, the microwave reflectometer (2) is used to measure the frequency and displacement vector of the toroidal Alfvén eigenmode, the Milnov probe (3) is used to measure the frequency and toroidal mode number of the toroidal Alfvén eigenmode, and the electron cyclotron radiation imaging (4) is used to determine the poloidal mode number of the toroidal Alfvén eigenmode.

3. A system for measuring the deuterium-tritium fuel ratio in plasma according to claim 2, characterized in that: The first collector (5) is mainly used to collect the frequency, displacement vector, toroidal modulus and poloidal modulus of the toroidal Alfvén eigenmode measured by the electron cyclotron radiometer (1), the microwave reflectometer (2), the Milnov probe (3) and the electron cyclotron radiation imaging (4), and input the frequency, displacement vector, toroidal modulus and poloidal modulus of the toroidal Alfvén eigenmode into the central processing unit (6) for calculation and processing.

4. A system for measuring the deuterium-tritium fuel ratio in plasma according to claim 3, characterized in that: The interferometer (7) is used to measure the electron density of the burning plasma, the dynamic Stark effect spectrometer (8) is used to measure the minimum safety factor and calculate the safety factor profile, the magnetic coil (9) is mainly used to measure the magnetic field information of the burning plasma discharge, and the charge exchange spectrometer (10) is mainly used to measure the rotation frequency information of the burning plasma.

5. A system for measuring the deuterium-tritium fuel ratio in plasma according to claim 4, characterized in that: The second collector (11) is mainly used to collect measurement information from the interferometer (7), the dynamic Stark effect spectrometer (8), the magnetic coil (9), and the charge exchange spectrometer (10), and input the measurement information into a high-performance computer (12) for calculation and processing.

6. The system for measuring the deuterium-tritium fuel ratio in plasma according to claim 5, characterized in that: The TAE frequency real-time processor (13) is used to compare the data calculated and processed by the high-performance computer (12) and the central processing unit (6) and calculate the TAE frequency and the deuterium-tritium fuel ratio in the deuterium-deuterium plasma.

7. A method for measuring the deuterium-tritium fuel ratio in plasma, characterized in that A system for measuring the deuterium-tritium fuel ratio in plasma according to any one of claims 1 to 6, comprising: The measurement frequency, position vector and mode number information of the toroidal Alfvén eigenmode are measured in plasma operation by means of an electron cyclotron radiometer (1), a microwave reflectometer (2), a Milnov probe (3) and electron cyclotron radiation imaging (4); The electron density, safety factor, plasma current and rotation frequency are obtained from the plasma through an interferometer (7), a dynamic Stark effect spectrometer (8), a magnetic coil (9) and a charge exchange spectrometer (10); The electron density, safety factor, plasma current and rotation frequency are numerically simulated by a high performance computer (12) to obtain the simulated frequency, simulated displacement vector and simulated modulus of the toroidal Alfvén eigenmode; Compare the measured frequency with the simulated frequency, the measured position vector with the simulated position vector, and the measured analog-to-digital information with the simulated analog-to-digital information one by one; If the three sets of comparison data are consistent, the TAE frequency in the deuterium-deuterium plasma under the same conditions is calculated; Based on the relationship between the deuterium-tritium ratio and the frequency of the toroidal Alfvénben, the deuterium-tritium fuel ratio is calculated according to the TAE frequency in the deuterium-deuterium plasma.

8. The method for measuring the deuterium-tritium fuel ratio in plasma according to claim 7, characterized in that: The method for measuring the frequency and position vector of the toroidal Alfvén eigenmode by an electron cyclotron radiometer (1) during plasma operation is as follows: During the plasma discharge process, the signal collected by the electron cyclotron radiometer (1) is Fourier transformed, and the frequency range of the circumferential Alfvén eigenmode is found through spectrum analysis to obtain the measurement frequency of the circumferential Alfvén eigenmode; The frequency range of the toroidal Alfvén eigenmode is numerically filtered to obtain the temperature perturbation; According to the temperature perturbation Calculate and get the displacement vector ξ; where γ=5 / 3, is the temperature gradient, δT e is the temperature disturbance, T e is the electron temperature.

9. The method for measuring the deuterium-tritium fuel ratio in plasma according to claim 7, characterized in that: The method for measuring the frequency and position vector of the toroidal Alfvén eigenmode by microwave reflectometer (2) during plasma operation is as follows: During the plasma discharge process, the signal collected by the microwave reflectometer (2) is Fourier transformed, and the frequency range of the circumferential Alfvén eigenmode is found through spectrum analysis to obtain the measurement frequency of the circumferential Alfvén eigenmode; The frequency range of the toroidal Alfvén eigenmode is numerically filtered to obtain the density perturbation; According to the density perturbation Calculate and obtain the displacement vector ξ; where, is the density gradient, δn e is the density perturbation, n e is the electron density.

10. The method for measuring the deuterium-tritium fuel ratio in plasma according to claim 7, characterized in that: Based on the relationship between the deuterium-tritium ratio and the frequency of the toroidal Alfvénben, the method for calculating the deuterium-tritium fuel ratio according to the TAE frequency in the deuterium-deuterium plasma is as follows: in, is the TAE frequency in deuterium-deuterium plasma, B t is the magnetic field, <n>is the line average electron density, safety factor q = 1.5, effective mass A eff =2, R is the maximum radius of the fusion device, n D , n T are the concentrations of deuterium and tritium, respectively, and f measured is the TAE frequency measured during the deuterium-tritium experiment, and K(n) is a calibration factor used to correct the deviation of the electron density and safety factor at the local position of the toroidal Alfvén eigenmode. <n> and TAE frequency deviation caused by q=1.5.< / n> < / n>

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