阅读说明：本技术 射线发射区图像测量装置和方法 (Ray emission area image measuring device and method ) 是由 陈忠靖 王峰 郑建华 江少恩 张兴 蒲昱东 晏骥 董云松 余波 于 2020-06-07 设计创作，主要内容包括：本发明提供了射线发射区图像测量装置和方法,其中,射线发射区图像测量装置包括：依次设置的射线发射模块、成像模块和图像记录模块；其中,成像模块设置有圆弧锥；射线发射模块用于生成射线,并将射线按照预设轨迹通过圆弧锥发送至图像记录模块,以使图像记录模块根据射线生成测量图像。本申请中采用圆弧锥作为成像模块,简化了成像模块的设计、加工和检测,降低了瞄准精度,且,突破了现有的射线发射区图像探测技术视场范围的限制,降低了对射线产额的要求,提高了对发射区射线源位置随机移动的容忍度,同时,保证了高空间分辨能力,提高了测量精度。(The invention provides a ray emission area image measuring device and a method, wherein the ray emission area image measuring device comprises: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein, the imaging module is provided with an arc cone; the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays. Adopt the circular arc awl as imaging module in this application, simplified imaging module's design, processing and detection, reduced the accuracy of aiming, just, broken through the restriction of current ray emission area image detection technique field range, reduced the requirement to ray yield, improved the tolerance to emission area ray source position random displacement, simultaneously, guaranteed high spatial resolution ability, improved measurement accuracy.)

1. A radiation-emitting region image measuring apparatus, comprising: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein the imaging module is provided with an arc cone;

the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays.

2. The radiation emitting area image measuring device according to claim 1, wherein the predetermined trajectory is a path tangent to the arc cone, and the step of sending the radiation to the image recording module through the arc cone according to the predetermined trajectory comprises:

and sending the ray to the image recording module according to a path tangent to the arc cone.

3. The radiation-emitting region image measuring device of claim 2, wherein the image recording module is configured to receive the radiation and generate a measurement image according to the radiation; the measurement image comprises a dark area, a penumbra area and a bright area, and the dark area, the penumbra area and the bright area are sequentially arranged outwards along the radial direction.

4. The radiation emitting region image measuring device according to claim 3, wherein the emitting region of the radiation emitting module is provided with a radiation source;

the image recording module is further configured to reconstruct an image of the radiation source according to the penumbra region, so as to obtain a reconstructed image of the radiation source.

5. The radiation emitting region image measuring device according to claim 3, wherein the signal intensity of the dark region is set according to the thickness of the circular cone.

6. A radiation-emitting region image measuring apparatus according to claim 3, wherein the signal intensity of the bright region is set according to the yield of the radiation.

7. The radiation emitting area image measuring device according to claim 1, wherein the number of the circular cones is 1, and the circular cones are arranged between the radiation emitting module and the image recording module;

or, the number of the arc cones is 2, so as to form an arc cone combination, and the arc cone combination is arranged between the ray emission module and the image recording module.

8. The radiation-emitting region image measuring apparatus of claim 4, wherein the radiation source comprises at least one of: accelerator neutron source, hash neutron source, neutron tube, reactor, synchrotron radiation device, radioactive isotope source and laser device.

9. The radiation-emitting region image measuring apparatus of claim 1, wherein the radiation comprises at least one of: neutrons, X-rays, and gamma rays.

10. A radiation-emitting region image measuring method applied to the radiation-emitting region image measuring apparatus according to any one of claims 1 to 9, the method comprising:

generating rays; wherein the rays are generated by a ray emitting module;

and sending the rays to the image recording module through an arc cone according to a preset track so that the image recording module generates a measurement image according to the rays.

Technical Field

The invention relates to the technical field of measurement of ray emission area images, in particular to a ray emission area image measuring device and method.

Background

The ray device has wide application in a plurality of scientific research and industrial production fields, the common ray device comprises an accelerator neutron source, a hash neutron source, a neutron tube, a reactor, a synchrotron radiation device, a radioactive isotope source and the like, and the types of the rays comprise neutrons, gamma rays, X rays and the like. At present, a large-scale laser device is used as a novel ray device, a ray source generated by the large-scale laser device has the characteristics of small size, short duration, high ray flux and the like, can generate neutrons, protons, gamma rays and X rays simultaneously, and has strong application potential. In practical applications, in order to be able to effectively utilize various radiation devices, it is necessary to know the properties of the radiation source, including flux, energy spectrum, size and shape, etc. Therefore, various radiation emitting region image detection techniques have been developed for different radiation devices.

When any single hole is adopted as an imaging component, namely the imaging component of the single hole imaging diagnostic technology, the field range of the imaging component is usually 200 mu m, and the change range of the central position of a neutron source reaches 400 mu m × mu m, so that the single hole structure cannot meet the requirement of image measurement of a laser-driven fusion neutron emission region¹⁴MJ stage ofThe application of the pinhole imaging diagnosis technology is limited by the neutron yield due to the laser device, and the measurement precision is reduced.

Disclosure of Invention

In view of the above, the present invention aims to provide a device and a method for measuring an image of a radiation emission area, so as to alleviate the above problems, and an arc cone is used as an imaging module, so that the design, processing and detection of the imaging module are simplified, the aiming accuracy is reduced, the limitation of the field range of the existing radiation emission area image detection technology is broken through, the requirement on the yield of radiation is reduced, the tolerance on the random movement of the radiation source position of the emission area is improved, meanwhile, the high spatial resolution capability is ensured, and the measurement accuracy is improved.

In a first aspect, an embodiment of the present invention provides a radiation emitting area image measuring apparatus, where the apparatus includes: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein the imaging module is provided with an arc cone;

the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays.

With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the preset trajectory is a path tangent to the arc cone, and the step of sending the ray to the image recording module through the arc cone according to the preset trajectory includes:

and sending the ray to the image recording module according to a path tangent to the arc cone.

With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the image recording module is configured to receive the ray and generate a measurement image according to the ray; the measurement image comprises a dark area, a penumbra area and a bright area, and the dark area, the penumbra area and the bright area are sequentially arranged outwards along the radial direction.

With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein a radiation source is disposed in an emission region of the radiation emission module;

the image recording module is further configured to reconstruct an image of the radiation source according to the penumbra region, so as to obtain a reconstructed image of the radiation source.

With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein the signal intensity of the dark area is set according to the thickness of the arc cone.

With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the signal intensity of the bright area is set according to the yield of the radiation.

With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where 1 circular arc cone is provided, and is disposed between the radiation emitting module and the image recording module;

or, the number of the arc cones is 2, so as to form an arc cone combination, and the arc cone combination is arranged between the ray emission module and the image recording module.

In combination with the third possible implementation manner of the first aspect, the embodiment of the present invention provides a seventh possible implementation manner of the first aspect, wherein the radiation source includes at least one of: accelerator neutron source, hash neutron source, neutron tube, reactor, synchrotron radiation device, radioactive isotope source and laser device.

With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the ray includes at least one of: neutrons, X-rays, and gamma rays.

In a second aspect, an embodiment of the present invention further provides a method for measuring an image of a radiation emitting area, where the method is applied to the device for measuring an image of a radiation emitting area, and the method includes:

generating rays; wherein the rays are generated by a ray emitting module;

and sending the rays to the image recording module through an arc cone according to a preset track so that the image recording module generates a measurement image according to the rays.

The embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a ray emission area image measuring device and a method, wherein the ray emission area image measuring device comprises: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein, the imaging module is provided with an arc cone; the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays. Adopt the circular arc awl as imaging module in this application, simplified imaging module's design, processing and detection, reduced the accuracy of aiming, just, broken through the restriction of current ray emission area image detection technique field range, reduced the requirement to ray yield, improved the tolerance to emission area ray source position random displacement, simultaneously, guaranteed high spatial resolution ability, improved measurement accuracy.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a ray-emitting region image measuring apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of an arc cone according to an embodiment of the present invention;

FIG. 3 is a schematic view of another radiation-emitting region image measuring apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic size diagram of an arc cone according to an embodiment of the present invention;

FIG. 5 is a diagram of a neutron point diffusion function provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating measurement results of a neutron source according to an embodiment of the present invention;

FIG. 7 is a schematic diagram illustrating measurement results of another neutron source provided by an embodiment of the invention;

fig. 8 is a flowchart of a method for measuring an image of a radiation emitting area according to an embodiment of the present invention.

Icon:

10-a radiation emitting module; 20-an imaging module; 30-image recording module.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Aiming at the existing large laser device, a millimeter-magnitude target pellet is directly or indirectly driven by laser, so that the target pellet is continuously contracted, and fusion fuel gas in the target pellet is heated, thereby achieving the fusion reaction generation condition; at this time, the fuel undergoes a fusion reaction and emits various rays, mainly including neutrons, gamma rays, X-rays, and the like. In practical applications, high spatial resolution neutrons are often usedThe imaging technology obtains the neutron source region image, so that the parameters such as the position, the size, the shape, the uniformity and the like of the neutron source region are deduced, and the space resolution of the neutron imaging system can reach below ten microns because the size of the neutron source is very small (about hundred microns). Currently, neutron imaging systems for laser-driven fusion neutron emission region measurements employ two imaging techniques, namely, for low yield: (>1×10¹³) And is suitable for high yield>1×10¹⁵) And the imaging component evolves from a single-pore structure to a multi-type multi-pore array structure.

In order to solve the problem that the field range of the single-hole structure is seriously insufficient, a multi-type multi-hole array structure is provided, wherein the multi-type multi-hole array structure can measure a plurality of images including a pinhole image and a penumbra hole image, the image characteristics of the multi-type multi-hole array structure are different and can be used for mutual verification and improving the accuracy of image reconstruction, the multi-hole array structure can enlarge the field range of the system and reduce the difficulty of aiming, but the application range of the multi-hole array structure is greatly limited and is only suitable for neutron yield exceeding 1 × 10¹⁴The MJ class laser device of (a), resulting in the limitation of the application of pinhole imaging diagnostic technology by neutron yield, reduces the accuracy of measurement.

Based on the problems, the embodiment of the invention provides a ray emission area image measuring device and a method, which are used for relieving the problems, and the arc cone is used as an imaging module, so that the design, the processing and the detection of the imaging module are simplified, the aiming precision is reduced, the limitation of the field range of the existing ray emission area image detection technology is broken through, the requirement on the ray yield is reduced, the tolerance on the random movement of the ray source position of an emission area is improved, meanwhile, the high spatial resolution capability is ensured, and the measuring precision is improved.

For the convenience of understanding the present embodiment, a detailed description will be given below of a radiation-emitting region image measuring apparatus according to an embodiment of the present invention.