阅读说明：本技术 一种实现射线源定向的高效率辐射探测系统 (High-efficiency radiation detection system for realizing ray source orientation ) 是由 张岚 于 2020-06-09 设计创作，主要内容包括：本发明涉及一种实现射线源定向的高效率辐射探测系统,包括：多个闪烁探测器,多个所述闪烁探测器呈规则形状排列,在多个所述闪烁探测器合围的空间内设有一与所述闪烁探测器延伸方向相同且边缘连续的第一屏蔽件,或设有一个或多个辐射探测器,或设有一个或多个射线阻挡材料体。本发明提供的实现射线源定向的高效率辐射探测系统,通过复杂的结构设计,排列探测器及射线屏蔽材料,在系统重量增加适当的前提下,使得从不同方向进入的射线,在不同的探测器内部,发生反应的计数率不同,能量沉积不同,从而实现射线入射方向定位的功能。同时提供射线源的剂量和核素识别信息。(The invention relates to a high-efficiency radiation detection system for realizing ray source orientation, which comprises: the scintillation detectors are arranged in a regular shape, and a first shielding piece which is the same as the extension direction of the scintillation detectors and has continuous edges is arranged in a space surrounded by the scintillation detectors, or one or more radiation detectors are arranged, or one or more ray blocking material bodies are arranged. According to the high-efficiency radiation detection system for realizing the ray source orientation, the detectors and the ray shielding materials are arranged through a complex structural design, so that rays entering from different directions have different reaction counting rates and different energy deposition in different detectors on the premise that the weight of the system is increased properly, and the function of positioning the incident direction of the rays is realized. While providing radiation source dose and nuclide identification information.)

1. A high efficiency radiation detection system for achieving source orientation, comprising: the scintillation detectors are arranged in a regular shape, and a first shielding piece which is the same as the extension direction of the scintillation detectors and has continuous edges is arranged in a space surrounded by the scintillation detectors, or one or more radiation detectors are arranged, or one or more ray blocking material bodies are arranged.

2. The high efficiency radiation detection system of claim 1, wherein the body of radiation detector, radiation blocking material is regular shaped or irregular.

3. The high efficiency radiation detection system of claim 2, wherein a plurality of said radiation detectors or a plurality of said bodies of radiation blocking material are stacked one on top of the other or arranged in a regular shape.

4. The high efficiency radiation detection system of claim 1, wherein the first shield is cylindrical or polygonal.

5. The high efficiency radiation detection system of claim 1, wherein a second shield is disposed between adjacent scintillation detectors.

Technical Field

The invention relates to the technical field of radiation detection and radiation imaging, in particular to a high-efficiency radiation detection system for realizing ray source orientation.

Background

In the fields of nuclear power, nuclear medicine, full-flow treatment of nuclear materials and the like, radioactive materials need to be detected, radioactive doses in monitored environments need to be tested, the category names of radioactive nuclides are identified, and energy spectrum detection of nuclides is carried out. There is a further need to understand the three-dimensional distribution of radionuclides in the environment.

On the basis of dose and nuclide identification, a gamma camera based on Na I scintillator is commonly used as a system capable of providing radionuclide distribution information. The structure of the system is a code plate, and a PD or Si PM array of a scintillation plate coupling surface array is added. The advantage is that radiation source distribution information can be given. The disadvantage is that only about 40 degree angle of radiation source distribution can be provided, and the actual requirement is 360 degree panoramic distribution, and at this time, a plurality of gamma cameras are spliced or rotated in two dimensions to obtain the panoramic radiation source distribution information. Another disadvantage is that the radiation energy can only reach up to 1.5Mev, which does not reach the conventional 3Mev detection range.

Another device for providing three-dimensional information of the ray source is a Compton camera based on a CdZnTe detector. Besides providing dose and nuclide identification information, the system can provide ray source distribution information within a 360-degree panoramic range by utilizing the three-dimensional position sensitivity function of the CZT detector and the Compton scattering principle without rotation and splicing. The system has the defects that CZT crystals are expensive, a detection system is complex, data processing is complex, so that the common CZT system is small in size, the detection efficiency is low, and the reaction speed of real-time monitoring is limited.

Disclosure of Invention

The invention aims to solve the problems that: on the basis of proper price, the application requirements of high detection efficiency and three-dimensional positioning of a ray source are simultaneously realized, and the adopted technical scheme is as follows: a high efficiency radiation detection system that enables source orientation, comprising: the scintillation detectors are arranged in a regular shape, and a first shielding piece which is the same as the extension direction of the scintillation detectors and has continuous edges is arranged in a space surrounded by the scintillation detectors, or one or more radiation detectors are arranged, or one or more ray blocking material bodies are arranged.

In a further improvement, the radiation detector and the ray blocking material body are in regular shapes or special shapes.

In a further improvement, a plurality of the radiation detectors or a plurality of the bodies of radiation blocking material are stacked or arranged one above the other in a regular shape.

In a further refinement, the first shield is cylindrical or polygonal.

In a further improvement, a second shielding piece is arranged between two adjacent scintillation detectors.

The invention has the beneficial effects that:

according to the high-efficiency radiation detection system for realizing the ray source orientation, the detectors and the ray shielding materials are arranged through a complex structural design, so that rays entering from different directions have different reaction counting rates and different energy deposition in different detectors on the premise that the weight of the system is increased properly, and the function of positioning the incident direction of the rays is realized. While providing radiation source dose and nuclide identification information.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of a radiation detection system according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a second shield configuration of the present invention;

FIG. 3 is a schematic diagram of a radiation detection system according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of a radiation detection system according to a second embodiment of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the description of the invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.