CN117198565A - Radiation detection module and fusion device - Google Patents
Radiation detection module and fusion device Download PDFInfo
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- CN117198565A CN117198565A CN202311481094.4A CN202311481094A CN117198565A CN 117198565 A CN117198565 A CN 117198565A CN 202311481094 A CN202311481094 A CN 202311481094A CN 117198565 A CN117198565 A CN 117198565A
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- 230000005855 radiation Effects 0.000 title claims abstract description 220
- 238000001514 detection method Methods 0.000 title claims abstract description 169
- 230000004927 fusion Effects 0.000 title claims abstract description 110
- 230000001681 protective effect Effects 0.000 claims abstract description 54
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 238000000429 assembly Methods 0.000 claims description 22
- 230000000712 assembly Effects 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 6
- 230000005693 optoelectronics Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
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- 238000005475 siliconizing Methods 0.000 description 4
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- 238000000151 deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000006138 lithiation reaction Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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Abstract
The invention relates to a radiation detection module and a fusion device, wherein the radiation detection module comprises a shell, at least two photoelectric radiation detection components and a rotating baffle plate; the shell comprises a vacuum flange and an outer protective cover, the vacuum flange is configured to be arranged on the side wall of the fusion vacuum chamber, and the outer protective cover is arranged in the fusion vacuum chamber and encloses a mounting cavity with the vacuum flange; each photoelectric radiation detection assembly is arranged in the mounting cavity, a transmission hole corresponding to the photoelectric radiation detection assembly is formed in the end face of the outer protective cover, which faces one side of the fusion vacuum chamber, and each photoelectric radiation detection assembly is configured to receive radiation from the transmission hole and output a corresponding electric signal; the rotating baffle is arranged on the end face of the outer protective cover facing the fusion vacuum chamber and is configured to expose the transmission holes on each outer protective cover when rotated to a first position and to shield each transmission hole when rotated to a second position.
Description
Technical Field
The invention relates to the field of nuclear fusion, in particular to a radiation detection module and a fusion device.
Background
Nuclear fusion refers to a form of nuclear reaction in which atoms of small mass (mainly deuterium or tritium) undergo nuclear polymerization under certain conditions (e.g., ultra-high temperature and high pressure) to produce new nuclei of heavier mass, accompanied by a tremendous energy release.
The main research directions of controllable nuclear fusion at present are laser-constrained (inertial-constrained) nuclear fusion and magnetic-constrained nuclear fusion. The main principle of the magnetic confinement nuclear fusion device is that a strong magnetic field is utilized to confine plasma containing light atomic nuclei in a fusion vacuum chamber and heat the plasma to a high temperature of hundreds of millions of DEG C, fusion reaction is realized, and the strong magnetic field is utilized to keep the plasma in the fusion vacuum chamber for a long time, so that the fusion reaction is stably and continuously carried out, and fusion energy is released manually and controllably.
It can be seen that the fusion reaction is achieved by heating the plasma to a very high temperature and, in addition, there are certain requirements on the plasma density and confinement time. The confinement time depends, among other things, on various mechanisms of plasma energy loss, such as neutral particle loss and radiation power loss. Accordingly, it is desirable to provide a detection assembly that is capable of detecting radiation power loss in a plasma.
Disclosure of Invention
The invention provides a radiation detection module and a fusion device for solving the problems existing in the prior art.
According to a first aspect of the present invention, there is provided a radiation detection module disposed on an inner wall of a fusion vacuum chamber and configured to detect radiation power loss of a plasma within the fusion vacuum chamber;
the radiation detection module comprises:
the shell comprises a vacuum flange and an outer protective cover, wherein the vacuum flange is configured to be arranged on the side wall of the fusion vacuum chamber, and the outer protective cover is arranged in the fusion vacuum chamber and forms a mounting cavity with the vacuum flange;
the photoelectric radiation detection assemblies are arranged in the mounting cavity, transmission holes corresponding to the photoelectric radiation detection assemblies are formed in the end face of the outer protective cover, which faces one side of the fusion vacuum chamber, and the photoelectric radiation detection assemblies are configured to receive radiation from the transmission holes and output corresponding electric signals;
and the rotating baffle is arranged on the end face of the outer protective cover facing the fusion vacuum chamber and is configured to expose the transmission holes on the outer protective cover when rotating to the first position and to shield the transmission holes when rotating to the second position.
In one embodiment of the invention, a rotating mechanism is arranged on the side of the vacuum flange, which is opposite to the fusion vacuum chamber, and the rotating mechanism is configured to extend out of the outer protective cover through a connecting rod and is fixedly connected with the rotating baffle plate so as to drive the rotating baffle plate to rotate.
In one embodiment of the invention, the rotary mechanism is a magnetically coupled rotary feedthrough comprising a driving portion and a driven portion, the driven portion being fixedly connected with the linkage, the driving portion being configured to output torque to the driven portion by magnetic force.
In one embodiment of the invention, the connecting rod is arranged in the middle of the mounting cavity in a penetrating way, and the connecting rod is fixed at the center of the rotating baffle; the photoelectric radiation detection assemblies are provided with two groups and are respectively positioned at two sides of the connecting rod, and each group of photoelectric radiation detection assemblies at least comprises one photoelectric radiation detection assembly.
In one embodiment of the present invention, the photoelectric radiation detection assembly includes an inner housing having an inner cavity and a photoelectric radiation detection unit having a rectangular photoelectric radiation detection portion, and a slit hole is provided in the inner housing;
on the longitudinal section of the photoelectric radiation detection component, the intersection points of the connecting lines of the two ends of the photoelectric radiation detection part and the narrow hole and the inside of the outer protective cover are all positioned in the transmission hole.
In one embodiment of the present invention, the rotating barrier is provided with openings corresponding to the transmission holes, and the openings are configured to expose the transmission holes on the respective outer shields when the rotating barrier is rotated to the first position, and to be offset from the transmission holes on the outer shields when the rotating barrier is rotated to the second position, so as to shield the transmission holes on the outer shields.
In one embodiment of the invention, the rotary baffle plate is provided with an arc-shaped limit hole, and a limit screw is arranged in the limit hole and is configured to be in a limit position when being abutted against the edge position of the limit hole.
In one embodiment of the invention, the limit screw is a spring screw configured to compress the rotating barrier against the outer protective cover.
In one embodiment of the invention, the vacuum flange is provided with a vacuum electrode feedthrough, and the photoemission detection assembly is configured to be electrically connected to the vacuum electrode feedthrough.
According to a second aspect of the invention there is provided a fusion device comprising:
a fusion device body; and
the fusion device comprises at least two radiation detection modules, wherein the fusion device body is provided with a fusion vacuum chamber, and the radiation detection modules are arranged on the inner wall of the fusion vacuum chamber.
The beneficial technical effects of the invention are as follows:
in the working process of the radiation detection module, high-temperature plasma is formed in the fusion vacuum chamber, and a large amount of radiation is emitted by the plasma, so that the radiation detection module is arranged on the inner wall of the fusion vacuum chamber and is configured to detect the radiation power loss of the plasma in the fusion vacuum chamber, and the confinement time of the plasma in the fusion vacuum chamber can be obtained according to the radiation power loss of the plasma.
In the process of plasma discharge, glow discharge cleaning and siliconizing or lithiation wall treatment of the fusion device, the rotary baffle plate of the photoelectric radiation detection assembly can effectively shield each transmission hole on the outer protective cover, so that the radiation detection module is not required to be taken out of a fusion vacuum chamber, the test state of the fusion device is not influenced, each photoelectric radiation detection assembly can be effectively protected, pollution deposition of sputtering or spraying on the photoelectric radiation detection assembly is prevented, the photoelectric radiation detection assembly is effectively prevented from being exposed to strong radiation of plasma when the photoelectric radiation detection assembly does not work, and the detection precision of the photoelectric radiation detection assembly is effectively ensured.
Specifically, the invention can effectively improve the responsibility stability of the photoelectric radiation detection component, so as to ensure that the photoelectric radiation detection component is not easy to damage even when the photoelectric radiation detection component is exposed to strong radiation of plasma and can work normally for a long time, thereby effectively ensuring the accuracy of the subsequent obtained plasma radiation emissivity result and avoiding deviation of the obtained result caused by the change of the responsibility of the photoelectric radiation detection component. The photoelectric radiation detection assembly has a simple and compact overall structure, occupies a smaller space, and can effectively save the space in a fusion vacuum chamber.
In the radiation detection module, the relative installation position of the photoelectric radiation detection component array can be ensured, and the rotary baffle plate can transfer the protection of the two groups of photoelectric radiation detection components to a single plane where the rotary baffle plate is positioned for protection, so that the whole structure of the radiation detection module is simpler.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic view of a fusion device according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a vacuum side of a radiation detection module provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an external side of a radiation detection module according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a radiation detection module according to an embodiment of the present invention with an outer protective cover removed;
FIG. 5 is a schematic cross-sectional view of a radiation detection module provided in an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of area A of FIG. 5;
FIG. 7 is a schematic top view of a radiation detection module according to an embodiment of the present invention with a rotating shutter removed;
FIG. 8 is a schematic top view of a radiation detection module with a rotating shutter in a first position provided in an embodiment of the present invention;
FIG. 9 is an exploded view of an optical radiation detection assembly provided in an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of a radiation detection module provided in accordance with an embodiment of the present invention;
FIG. 11 is a schematic top view of a radiation detection module with a rotating shutter in a second position, in accordance with an embodiment of the present invention.
The correspondence between the component names and the reference numerals in fig. 1 to 11 is as follows:
10. a radiation detection module; 1. a housing; 11. a vacuum flange; 111. vacuum electrode feed-through; 12. an outer protective cover; 121. a transmission hole; 13. a mounting cavity; 2. a photoelectric radiation detection assembly; 21. an inner case; 211. a slot; 22. a photoelectric radiation detection unit; 221. a photoelectric radiation detection section; 23. an inner cavity; 31. rotating the baffle; 311. opening holes; 312. a limit screw; 32. a connecting rod; 33. a rotation mechanism; 4. a mounting base; 20. a fusion device body; 30. a fusion vacuum chamber.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
The following describes specific embodiments of the present invention with reference to the drawings.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.
Herein, "first", "second", etc. are used only for distinguishing one another, and do not denote any order or importance, but rather denote a prerequisite of presence.
Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc.
Unless otherwise indicated, numerical ranges herein include not only the entire range within both of its endpoints, but also the several sub-ranges contained therein.
The invention provides a radiation detection module for being disposed on an inner wall of a fusion vacuum chamber of a fusion device and configured to detect radiation power loss of a plasma within the fusion vacuum chamber.
Specifically, the radiation detection module includes a housing, at least two photoelectric radiation detection assemblies, and a rotating barrier. The shell comprises a vacuum flange and an outer protective cover, the vacuum flange is configured to be arranged on the side wall of the fusion vacuum chamber, the outer protective cover is arranged in the fusion vacuum chamber and encloses an installation cavity with the vacuum flange, and a transmission hole corresponding to the photoelectric radiation detection assembly is formed in the end face of the outer protective cover, which faces one side of the fusion vacuum chamber. Therefore, after the radiation detection module is arranged on the fusion device main body, one side of the outer protective cover is a vacuum side, and the other side of the outer protective cover is an external side, so that the vacuum side and the external side can be effectively isolated, and the vacuum degree in the fusion vacuum chamber is ensured. The outer protective cover is used for covering the photoelectric radiation detection assembly and preventing impact and pollution of external particles. Each of the photo-radiation detection assemblies is disposed within the mounting cavity and is configured to receive radiation from the transmissive aperture and output a corresponding electrical signal. The rotating baffle is arranged on the end face of the outer protective cover facing the fusion vacuum chamber and is configured to expose the transmission holes on each outer protective cover when rotated to a first position and to shield each transmission hole when rotated to a second position.
In this way, in the working process of the radiation detection module, high-temperature plasma is formed in the fusion vacuum chamber, and a large amount of radiation is emitted by the plasma.
In the process of plasma discharge, glow discharge cleaning and siliconizing or lithiation wall treatment of the fusion device, the rotary baffle plate of the photoelectric radiation detection assembly can effectively shield each transmission hole on the outer protective cover, so that the radiation detection module is not required to be taken out of a fusion vacuum chamber, the test state of the fusion device is not influenced, each photoelectric radiation detection assembly can be effectively protected, pollution deposition of sputtering or spraying on the photoelectric radiation detection assembly is prevented, the photoelectric radiation detection assembly is effectively prevented from being exposed to strong radiation of plasma when the photoelectric radiation detection assembly does not work, and the detection precision of the photoelectric radiation detection assembly is effectively ensured.
Specifically, the invention can effectively improve the responsibility stability of the photoelectric radiation detection component, so as to ensure that the photoelectric radiation detection component is not easy to damage even when the photoelectric radiation detection component is exposed to strong radiation of plasma and can work normally for a long time, thereby effectively ensuring the accuracy of the subsequent obtained plasma radiation emissivity result and avoiding deviation of the obtained result caused by the change of the responsibility of the photoelectric radiation detection component. The photoelectric radiation detection assembly has a simple and compact overall structure, occupies a smaller space, and can effectively save the space in a fusion vacuum chamber.
In the radiation detection module, the relative installation position of the photoelectric radiation detection component array can be ensured, and the rotary baffle plate can transfer the protection of the two groups of photoelectric radiation detection components to a single plane where the rotary baffle plate is positioned for protection, so that the whole structure of the radiation detection module is simpler.
For ease of understanding, the specific structure of the fusion device of the present invention and its principle of operation will be described in detail below in connection with one embodiment with reference to fig. 1 to 11. It should be noted that, in order to keep the text concise, the invention introduces the radiation detection module together when describing the specific structure and the working principle of the fusion device.
As shown in fig. 1, the present invention provides a fusion device suitable for controlled nuclear fusion, in particular, comprising a fusion device body 20 and at least two radiation detection modules 10, the fusion device body 20 being provided with a fusion vacuum chamber 30, the radiation detection modules 10 being provided on an inner wall of the fusion vacuum chamber 30 and being configured to detect a loss of radiation power of a plasma within the fusion vacuum chamber 30.
In particular, as shown in fig. 2, 3 and 4, the radiation detection module 10 comprises a housing 1, at least two photoelectric radiation detection assemblies 2 and a rotating barrier 31. Wherein the housing 1 comprises a vacuum flange 11 and an outer protective cover 12, the vacuum flange 11 is configured to be arranged on the side wall of the fusion vacuum chamber 30, and the outer protective cover 12 is arranged in the fusion vacuum chamber 30 and encloses a mounting cavity 13 with the vacuum flange 11. As shown in fig. 5, 6 and 7, the end surface of the outer protective cover 12 facing the fusion vacuum chamber 30 is provided with a transmission hole 121 corresponding to the optical radiation detecting module 2. Thus, when the radiation detection module 10 is mounted on the fusion device main body 20, the side where the outer protective cover 12 is located is the vacuum side, and the other side is the external side, so that the vacuum side and the external side can be effectively isolated, and the vacuum degree in the fusion vacuum chamber 30 is ensured. The outer protective cover 12 is used to cover the optical radiation detection assembly 2 from impact and contamination by external particles.
Each of the photo-radiation detection assemblies 2 is disposed within the mounting cavity 13 and is configured to receive radiation from the transmissive aperture 121 and output a corresponding electrical signal. Specifically, the photoelectric radiation detection assembly 2 may receive thermal radiation emitted by the plasma in the fusion vacuum chamber 30, where the thermal radiation is broad spectrum radiation ranging from soft X-rays to infrared rays, and generate a corresponding electrical signal by using a photoelectric effect, and obtain a radiation power result of the plasma in the fusion vacuum chamber 30 by using the corresponding electrical signal. Thus, in one embodiment of the present invention, the photo radiation detection assembly 2 is an AXUV (Absolute Extreme Ultraviolet ) photodiode detector capable of converting incident energy into photocurrent using the photoelectric effect, capable of detecting broad spectrum radiation of frequency bands from soft X-rays to infrared, and having almost the same response rate at all wavelengths, high sensitivity, small spatial resolution, fast time response, ultra-high vacuum compatibility and high temperature compatibility. In another embodiment of the present invention, the photoelectric radiation detecting assembly 2 may be a scintillator detector or a semiconductor detector, and other types of photodetectors may be used, and the principle is similar and will not be described herein. Specifically, as shown in fig. 4, each of the photoelectric radiation detection assemblies 2 is disposed on the mounting base 4, and the mounting base 4 is fixedly disposed on the vacuum flange 11.
As shown in fig. 8 and 11, the rotating shutter 31 is provided on the end face of the outer protective cover 12 on the side facing the fusion vacuum chamber 30, and is configured to expose the transmission holes 121 on the respective outer protective covers 12 when rotated to the first position, and to shield the respective transmission holes 121 when rotated to the second position.
Specifically, as shown in fig. 8 and 11, the first position and the second position may be specific positions of the rotating shutter 31, or may be a range of positions of the rotating shutter 31, so long as the rotating shutter 31 is rotated to the first position, the transmission holes 121 on the outer protective covers 12 can be exposed, and the transmission holes 121 can be shielded when rotated to the second position.
Thus, during operation of the radiation detection module 10 of the present invention, a high temperature plasma is formed within the fusion vacuum chamber 30, which emits a large amount of radiation, such that, since the radiation detection module 10 is disposed on the inner wall of the fusion vacuum chamber 30 and is configured to detect the radiation power loss of the plasma within the fusion vacuum chamber 30, the confinement time of the plasma within the fusion vacuum chamber 30 can be obtained from the radiation power loss of the plasma.
Specifically, since at least two radiation detection modules 10 are disposed in the fusion device of the present invention, and at least two photoelectric radiation detection assemblies 2 are disposed in each radiation detection module 10, each photoelectric radiation detection assembly 2 can observe different areas of a small section of plasma, and the detection results of each photoelectric radiation detection assembly 2 can obtain the distribution of the plasma radiation emissivity in the small section through transformation, so that the radiation power loss of the plasma in the fusion vacuum chamber 30 can be obtained by integrating the detection results of each photoelectric radiation detection assembly 2.
In the process of plasma discharge, glow discharge cleaning and siliconizing or lithiation wall treatment of the fusion device, the rotary baffle plate 31 of the photoelectric radiation detection assembly 2 can effectively shield each transmission hole 121 on the outer protective cover 12, so that the radiation detection module 10 of the fusion device can effectively protect each photoelectric radiation detection assembly 2 without taking out the fusion device from the fusion vacuum chamber 30 and affecting the test state of the fusion device, prevent sputtering or spraying from polluting and depositing the photoelectric radiation detection assembly 2, and effectively avoid the photoelectric radiation detection assembly 2 from being exposed to strong radiation of plasma when not working, thereby effectively ensuring the detection precision of the photoelectric radiation detection assembly 2.
It can be understood that, as shown in fig. 4, according to the actual detection requirement, in one embodiment of the present invention, the photoelectric radiation detecting assembly 2 includes two groups of photoelectric radiation detecting assemblies 2, the detecting directions of the two groups of photoelectric radiation detecting assemblies 2 are divergent, the mounting surfaces of the two groups of photoelectric radiation detecting assemblies 2 are disposed at an included angle, the upper end of the mounting seat 4 is in a shape with a narrow upper part and a wide lower part, and each group of photoelectric radiation detecting assemblies 2 includes at least one photoelectric radiation detecting assembly 2. Specifically, as shown in fig. 4, each group of the photoelectric radiation detection modules 2 includes two photoelectric radiation detection modules 2. In this way, in the radiation detection module 10 of the present invention, not only the relative installation position of the array of the photoelectric radiation detection assemblies 2 can be ensured, but also the rotating baffle 31 can shift the protection of the two groups of photoelectric radiation detection assemblies 2 to a single plane where the rotating baffle 31 is located for protection, so that the overall structure of the radiation detection module 10 of the present invention is more concise. In another embodiment of the present invention, the detection direction and the specific number of the photoelectric radiation detection modules 2 may be set according to the needs, which is not limited herein.
Specifically, the invention can effectively improve the responsibility stability of the photoelectric radiation detection component 2, so as to ensure that the photoelectric radiation detection component 2 is not easy to damage even when the photoelectric radiation detection component 2 is exposed to strong radiation of plasma and can work normally for a long time, thereby effectively ensuring the accuracy of the subsequent obtained plasma radiation emissivity result and avoiding deviation of the obtained result caused by the change of the responsibility of the photoelectric radiation detection component 2. The photoelectric radiation detection assembly 2 has a simple and compact overall structure, occupies a small space, and can effectively save the space in the fusion vacuum chamber 30.
In order to enable the photoelectric radiation detection assembly 2 to transmit the generated electrical signal to the outside, as shown in fig. 3, in one embodiment of the present invention, the vacuum flange 11 is provided with a vacuum electrode feedthrough 111, the photoelectric radiation detection assembly 2 is configured to be electrically connected to the vacuum electrode feedthrough 111, both sides of the vacuum electrode feedthrough 111 are isolated from each other, and a conductive part is provided on the vacuum electrode feedthrough 111, such that one end of the vacuum electrode feedthrough 111 is electrically connected to the photoelectric radiation detection assembly 2 and the other end is connected to a control unit of the outside, such that the photoelectric radiation detection assembly 2 can form a loop with the control unit of the outside through the vacuum electrode feedthrough 111. The electric signal generated by the photoelectric radiation detection assembly 2 is transmitted to an external control unit through the vacuum electrode feed-through 111, so that the external control unit can conveniently acquire the radiation power loss of the plasma in the fusion vacuum chamber 30 by integrating the detection results of the photoelectric radiation detection units 22.
Specifically, as shown in fig. 6 and 9, in one embodiment of the present invention, the photoelectric radiation detecting assembly 2 includes an inner housing 21 and a photoelectric radiation detecting unit 22, the inner housing 21 is formed with an inner cavity 23, the photoelectric radiation detecting unit 22 is provided with a rectangular photoelectric radiation detecting portion 221, and the inner housing 21 is provided with a slit 211; in the longitudinal section of the photoelectric radiation detecting element 2, the intersection points of the lines between both ends of the photoelectric radiation detecting portion 221 and the slit 211 and the inside of the outer protective cover 12 are located in the transmission hole 121. That is, any one end point of the photoelectric radiation detecting portion 221 extends toward the slit 211, and the extending line intersects with the inner edge of the outer protective cover 12, and the intersection point is located in the transmission hole 121. The inner housing 21 serves to house the photo radiation detection unit 22 to further block the impact and contamination of external particles. Specifically, in the operation of the fusion device of the present invention, the radiation generated by the plasma passes through the transmission hole 121 and reaches the photoelectric radiation detecting unit 22 through the slit 211 on the inner housing 21, and the photoelectric radiation detecting unit 22 receives the radiation and outputs a corresponding electrical signal.
As shown in fig. 5 and 6, since the intersection points between the two ends of the photoelectric radiation detecting portion 221 and the connecting line of the slot 211 and the inside of the outer protective cover 12 are all located in the transmission hole 121 on the longitudinal section of the photoelectric radiation detecting assembly 2, the radiation from the plasma can be received at all positions on the photoelectric radiation detecting portion 221, and the condition that the partial area of the photoelectric radiation detecting portion 221 cannot receive the radiation due to the blocking of the optical path by the outer protective cover 12 can not occur, so that the positions of the photoelectric radiation detecting portion 221 can be effectively utilized is ensured. It will be appreciated that when the rotating shutter 31 is rotated to the first position as shown in fig. 8, so that the transmission holes 121 on the respective outer protection covers 12 are exposed, the transmission holes 121 on the respective outer protection covers 12 are completely exposed, and the condition that the rotating shutter 31 shields a partial region of the transmission holes 121 does not occur.
Specifically, as shown in fig. 4 and 10, in one embodiment of the present invention, a rotating mechanism 33 is disposed on a side of the vacuum flange 11 facing away from the fusion vacuum chamber 30, and the rotating mechanism 33 is configured to extend out of the outer protective cover 12 through a connecting rod 32 and is fixedly connected with the rotating barrier 31 so as to drive the rotating barrier 31 to rotate. When the rotating baffle 31 needs to be driven to rotate, the rotating mechanism 33 can drive the rotating baffle 31 to rotate by driving the connecting rod 32 to rotate.
Further, as shown in fig. 10, in one embodiment of the present invention, the rotation mechanism 33 is a magnetically coupled rotary feedthrough, which includes a driving portion and a driven portion, the driven portion being fixedly connected with the link 32, and the driving portion being configured to output torque to the driven portion by magnetic force. When the rotating baffle plate 31 needs to be driven to rotate, the driving part of the magnetic coupling rotary feed-through can output torque to the driven part through magnetic force, and then the driven part drives the connecting rod 32 and the rotating baffle plate 31 to rotate. In addition, since the rotation mechanism 33 is a magnetic coupling rotary feedthrough, two sides of the magnetic coupling rotary feedthrough are isolated from each other, no gas enters the fusion vacuum chamber 30 from the magnetic coupling rotary feedthrough, so that the vacuum degree in the fusion vacuum chamber 30 can be effectively ensured, and leakage in the fusion vacuum chamber 30 can be prevented.
As shown in fig. 10, in one embodiment of the present invention, a link 32 is penetratingly provided at the middle of the installation cavity 13, and the link 32 is fixed to the center of the rotating barrier 31; the photoelectric radiation detection assembly 2 is provided with two groups, and is respectively located at both sides of the link 32. Thus, the rotating shutter 31 can be rotated about the link 32 at the same time, and the transmission holes 121 on the same side can be shielded at the same time, with respect to the link 32. In this way, the transmission holes 121 on both sides of the outer protective cover 12 can be ensured to be shielded at the same time, and the situation that one group of transmission holes 121 is shielded and the other group of transmission holes 121 is still in an exposed state can not occur, so that the consistency of the working conditions of the two groups of photoelectric radiation detection assemblies 2 is ensured, and the service life of the photoelectric radiation detection assemblies 2 is further prolonged.
As shown in fig. 8 and 11, in one embodiment of the present invention, the rotating shutter 31 is provided with an opening 311 corresponding to the transmission hole 121, and the opening 311 is configured to expose the transmission hole 121 on each of the outer protection covers 12 when the rotating shutter 31 is rotated to the first position, and to be offset from the transmission hole 121 on the outer protection cover 12 to shield the transmission hole 121 on the outer protection cover 12 when the rotating shutter 31 is rotated to the second position. Thus, during normal operation of the fusion device of the present invention, the rotating shutter 31 may be controlled to rotate to the first position such that the aperture 311 is aligned with the transmissive aperture 121, thereby completely exposing the transmissive aperture 121 on the outer protective cover 12, and radiation generated by the plasma in the fusion vacuum chamber 30 may enter the optical radiation detection assembly 2 through the opening in the rotating shutter 31 and the transmissive aperture 121 on the outer protective cover 12. In the process of plasma discharge, glow discharge cleaning and siliconizing or lithiating wall treatment of the fusion device of the present invention, the rotating barrier 31 of the photoelectric radiation detection assembly 2 of the present invention can be rotated to the second position to stagger the aperture 311 from the transmission hole 121 on the outer protective cover 12 so as to shield the transmission hole 121 on the outer protective cover 12 by the rotating barrier 31.
Compared with the rotary baffle plate 31 without the opening 311, the rotary baffle plate 31 is provided with the opening 311 corresponding to the transmission hole 121, so that the rotary baffle plate 31 can effectively expose or shield the required travel of the transmission hole 121, and the radiation detection module 10 of the invention can more sensitively respond when the transmission hole 121 needs to be exposed or shielded.
As shown in fig. 8, in one embodiment of the present invention, the openings 311 and the transmission holes 121 on the rotating shutter 31 are elongated kidney-shaped holes, so as to ensure that the optical paths of the corresponding photoelectric radiation detecting units 22 are not blocked. In another embodiment of the present invention, the openings 311 and the transmission holes 121 on the rotating plate 31 may have other shapes, which will not be described herein.
As shown in fig. 8, in one embodiment of the present invention, the rotating barrier 31 is provided with an arc-shaped limiting hole, and a limiting screw 312 is disposed in the limiting hole, and the limiting screw 312 is configured to abut against an edge position of the limiting hole to bring the rotating barrier 31 to a limit position. Like this, can effectively inject the rotation scope of rotatory baffle 31 for rotatory baffle 31 rotates when limit screw 312 butt in the marginal position of spacing hole, rotatory baffle 31 can stop rotating, avoids appearing rotatory baffle 31 excessive rotation's condition, effectively guarantees rotatory baffle 31's motion precision.
Further, in one embodiment of the present invention, the limit screw 312 is a spring screw configured to compress the rotating barrier 31 against the outer protective cover 12. Because the spring screw can compress the rotating baffle plate 31 on the outer protective cover 12, particles in the fusion vacuum chamber 30 can be further prevented from entering the radiation detection module 10 from a gap between the rotating baffle plate 31 and the outer protective cover 12 when the rotating baffle plate 31 is positioned at the second position, and the photoelectric radiation detection assembly 2 is effectively protected.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.
Claims (10)
1. A radiation detection module, characterized in that the radiation detection module (10) is arranged on an inner wall of a fusion vacuum chamber (30) and is configured to detect a loss of radiation power of a plasma within the fusion vacuum chamber (30);
the radiation detection module (10) comprises:
the vacuum flange (11) is configured to be arranged on the side wall of the fusion vacuum chamber (30), and the outer protective cover (12) is arranged in the fusion vacuum chamber (30) and encloses a mounting cavity (13) with the vacuum flange (11);
at least two photoelectric radiation detection assemblies (2), wherein each photoelectric radiation detection assembly (2) is arranged in the installation cavity (13), a transmission hole (121) corresponding to the photoelectric radiation detection assembly (2) is formed in the end face of the outer protective cover (12) facing one side of the fusion vacuum chamber (30), and each photoelectric radiation detection assembly (2) is configured to receive radiation from the transmission hole (121) and output a corresponding electric signal;
and a rotating shutter (31), wherein the rotating shutter (31) is provided on an end surface of the outer protective cover (12) facing the fusion vacuum chamber (30), and is configured to expose the transmission holes (121) on the outer protective cover (12) when rotated to a first position, and to shield the transmission holes (121) when rotated to a second position.
2. Radiation detection module according to claim 1, characterized in that a side of the vacuum flange (11) facing away from the fusion vacuum chamber (30) is provided with a rotation mechanism (33), the rotation mechanism (33) being configured to extend out of the outer protective cover (12) via a connecting rod (32) and to be fixedly connected with the rotation baffle (31) for driving the rotation baffle (31) in rotation.
3. The radiation detection module according to claim 2, wherein the rotation mechanism (33) is a magnetically coupled rotary feedthrough comprising a driving portion and a driven portion, the driven portion being fixedly connected with the link (32), the driving portion being configured to output torque to the driven portion by magnetic force.
4. The radiation detection module according to claim 2, wherein the link (32) is disposed through a middle portion of the mounting cavity (13), and the link (32) is fixed to a center of the rotating shutter (31); the photoelectric radiation detection assemblies (2) are provided with two groups, are respectively positioned at two sides of the connecting rod (32), and each group of photoelectric radiation detection assemblies (2) at least comprises one photoelectric radiation detection assembly (2).
5. The radiation detection module according to claim 2, wherein the photoelectric radiation detection assembly (2) comprises an inner housing (21) and a photoelectric radiation detection unit (22), the inner housing (21) is formed with an inner cavity (23), the photoelectric radiation detection unit (22) is provided with a rectangular photoelectric radiation detection part (221), and the inner housing (21) is provided with a narrow hole (211);
on a longitudinal section of the photoelectric radiation detection assembly (2), intersection points of connecting lines of two ends of the photoelectric radiation detection part (221) and the narrow hole (211) and the inside of the outer protective cover (12) are all positioned in the transmission hole (121).
6. The radiation detection module according to claim 1, wherein the rotating shutter (31) is provided with openings (311) corresponding to the transmissive holes (121), the openings (311) being configured to expose the transmissive holes (121) on each of the outer shields (12) when the rotating shutter (31) is rotated to the first position and to be offset from the transmissive holes (121) on the outer shields (12) when the rotating shutter (31) is rotated to the second position to shield the transmissive holes (121) on the outer shields (12).
7. The radiation detection module according to claim 1, wherein the rotating barrier (31) is provided with an arc-shaped limiting hole, a limiting screw (312) is arranged in the limiting hole, and the limiting screw (312) is configured to enable the rotating barrier (31) to be in a limiting position when being abutted against the edge position of the limiting hole.
8. The radiation detection module defined in claim 7, wherein the limit screw (312) is a spring screw configured to compress the rotating barrier (31) against the outer protective cover (12).
9. The radiation detection module according to claim 1, wherein the vacuum flange (11) is provided with a vacuum electrode feed-through (111), the optoelectronic radiation detection assembly (2) being configured to be electrically connected with the vacuum electrode feed-through (111).
10. A fusion device, comprising:
a fusion device body (20); and
the radiation detection module (10) according to at least two of claims 1 to 9, wherein the fusion device body (20) is provided with the fusion vacuum chamber (30), the radiation detection module (10) being arranged on an inner wall of the fusion vacuum chamber (30).
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| JPS6285886A (en) * | 1985-10-11 | 1987-04-20 | 株式会社日立製作所 | Diverter for nuclear fusion device |
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| CN116193694A (en) * | 2022-12-23 | 2023-05-30 | 核工业西南物理研究院 | Vacuum ultraviolet monochromator for plasma density diagnosis |
| CN116434980A (en) * | 2023-03-09 | 2023-07-14 | 北京化工大学 | Micro-fluidic deuterium-tritium clash nuclear fusion flywheel regulation and control continuous power generation technology |
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| JPS6285886A (en) * | 1985-10-11 | 1987-04-20 | 株式会社日立製作所 | Diverter for nuclear fusion device |
| CN102954973A (en) * | 2011-08-05 | 2013-03-06 | 精工电子纳米科技有限公司 | Transmission x-ray analyzer and transmission x-ray analysis method |
| US20220341802A1 (en) * | 2019-09-20 | 2022-10-27 | Inficon ag | Vacuum-tight electrical feedthrough |
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