High-energy ray detection device and high-energy ray energy disperse spectroscopy

Abstract

The invention provides a high-energy ray detection device. The high-energy ray detection device comprises a high-energy ray source, a stack structure, a shielding block, a reflecting mirror, a detector and a light shield, the stack structure, the shielding block and the reflector are arranged in the light shield, and the high-energy ray source and the detector are arranged outside the light shield; the high-energy ray source emits rays to the first side surface based on the first light through hole; the stack structure comprises n stacks of different response matrixes, the stacks are arranged in the grooves of the second side face from top to bottom, and rays are received through the through hole units of the first side face and converted into visible light; visible light is emitted from the second side surface, is received by the reflector and is reflected to the detector based on the second light through hole, and is converted into an electric signal by the detector. The invention also provides a high-energy ray energy disperse spectroscopy, which comprises a computer and a high-energy ray detection device, and the computer is electrically connected with a detector of the high-energy ray detection device and performs spectrum unfolding. The device has the advantages of being high in spectrum unfolding stability, high in measurement precision, low in spectrum unfolding uncertainty and compact in structure.

Description

Technical Field

[0001] This invention relates to the field of high-energy radiation detection, and in particular to a high-energy radiation detection device and a high-energy radiation spectrometer. Background Technology

[0002] High-energy rays have a wide range of applications in fields such as laser fusion and high-energy-density physics. Stacked gamma-ray spectrometers are key equipment for diagnosing gamma-ray energy spectra and can acquire important parameters such as the gamma-ray energy spectrum generated by fast electrons in the megaelectronvolt (MeV) energy range. Traditional stacked spectrometers mostly use imaging plates (IPs) as the detection medium, which has obvious defects: (1) the IP readout speed is slow and it is difficult to meet the detection requirements of repetition rate experiments; (2) the IP has a single response capability to gamma rays, and in single-shot experiments, the IP signal in the low-energy range is easily saturated while the IP signal in the high-energy range is submerged by noise.

[0003] Therefore, how to provide a high-energy X-ray spectrometer with a wide detector dynamic response range, strong spectral stability, small spectral error, and compact structure has become one of the technical problems that urgently need to be solved by those skilled in the art.

[0004] It should be noted that the above description of the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of the present invention and facilitating understanding by those skilled in the art. It should not be assumed that the above technical solutions are known to those skilled in the art simply because they have been described in the background section of this invention. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a high-energy ray detection device and a high-energy ray spectrometer to solve the problems of large spectral interpretation error, poor spectral interpretation stability and many interference signals in the existing high-energy ray spectrometer.

[0006] To achieve the above and other related objectives, the present invention provides a high-energy radiation detection device, which includes at least: a high-energy radiation source, a stack structure, a shielding block, a reflector, a detector, and a light shield; the stack structure, the shielding block, and the reflector are all disposed within the light shield; the high-energy radiation source is used to emit high-energy radiation and is disposed opposite to a first side of the shielding block; the high-energy radiation source is located outside the light shield, and a first light-transmitting hole of the light shield is disposed at a corresponding position on the light shield of the high-energy radiation's optical path; the shielding block is used to shield stray scattered radiation, and the first and second sides of the shielding block are adjacent; the stack structure includes n stacks arranged sequentially from top to bottom, where n is greater than or equal to 2. A natural number; n stacks are arranged in the groove of the second side, and a through-hole unit is provided on the first side; the n stacks receive the high-energy rays through the through-hole unit, and the high-energy rays are converted into visible light based on n response matrices that correspond one-to-one with the n stacks, and the n response matrices are all different; the visible light is transmitted from the second side to the outside of the shielding block; the reflector receives the visible light and reflects it to the detector, and the reflector is arranged opposite to the second side; the detector converts the visible light into a corresponding electrical signal and is arranged outside the light shield; the second light-transmitting hole of the light shield is arranged at the corresponding position of the visible light path on the light shield, and the light entrance of the detector is aligned with the second light-transmitting hole.

[0007] Optionally, a grooves are arranged sequentially from top to bottom on the second side, where a is a natural number greater than or equal to 1 and less than or equal to n; multiple stacks are stacked one on top of the other in a corresponding groove, or one stack is set in a corresponding groove.

[0008] Optionally, the through-hole unit includes b through-holes arranged sequentially from top to bottom, where b is a natural number greater than or equal to 1 and less than or equal to n; multiple stacks stacked vertically receive the high-energy rays based on a corresponding through-hole, or a stack receives the high-energy rays based on a corresponding through-hole.

[0009] Optionally, the stack includes x flashing blocks and y metal filters, where x is a natural number greater than or equal to 2 and y is a natural number greater than or equal to 1; the flashing blocks and the metal filters in the stack are alternately stacked in sequence from the first side to the opposite side of the first side.

[0010] Alternatively, the number and thickness of the scintillating blocks, the number and thickness of the metal filters, and the arrangement order of the scintillating blocks and the metal filters in the corresponding stack are set based on the minimum condition number of the response matrix corresponding to the stack.

[0011] Alternatively, except for the surface facing the second side, all surfaces of the scintillating block are provided with a reflective coating, which is used to limit the transmission direction of the visible light.

[0012] Alternatively, the stack may further include Mylar septa disposed between any adjacent flashing blocks in the stack.

[0013] Optionally, the high-energy ray detection device further includes a secondary deflector magnet, which is disposed between the high-energy ray source and the first side, and the two poles of the secondary deflector magnet are arranged opposite each other based on the high-energy ray, for removing charged particles in the high-energy ray.

[0014] Optionally, the high-energy ray detection device further includes a wide-angle short focal length lens, which is located inside the light shield and disposed in the visible light path between the reflector and the detector.

[0015] To achieve the above and other related objectives, the present invention also provides a high-energy X-ray spectrometer, which includes at least: a support stage, a computer, and the aforementioned high-energy X-ray detection device; the high-energy X-ray detection device is disposed on the support stage; the computer is electrically connected to the detector of the high-energy X-ray detection device and is used to acquire the response signal of the high-energy X-ray to analyze the incident energy spectrum of the high-energy X-ray.

[0016] As described above, the high-energy ray detection device and high-energy ray spectrometer of the present invention have the following beneficial effects:

[0017] 1. This invention reduces the uncertainty of spectrum interpretation and improves the accuracy of spectrum interpretation by setting up n stacks with different response matrices.

[0018] 2. The present invention provides a reflective coating on all surfaces of the scintillator except the side facing the second side, which not only makes visible light emanate towards the second side, improving the compactness of the structure, but also reduces the influence of secondary particles and optical crosstalk, thus improving the measurement accuracy.

[0019] 3. By placing Mylar spacers between any adjacent scintillation blocks in the stack, this invention can enhance the reflection of visible light and suppress the cross-layer deposition of secondary electrons and optical crosstalk, thereby improving measurement accuracy.

[0020] 4. By minimizing the condition number of the response matrix, this invention can reduce the ill-conditioned nature of the response matrix, thereby reducing errors in the high-energy ray spectral interpretation process. Attached Figure Description

[0021] Figure 1 The diagram shown is a structural schematic of the high-energy ray detection device of the present invention.

[0022] Figure 2 The diagram shows a first configuration of the through-hole unit and groove on the shielding block of the present invention.

[0023] Figure 3 This diagram illustrates a second configuration of the through-hole unit and groove on the shielding block of the present invention.

[0024] Figure 4 The diagram shows a first configuration of the stack structure of the present invention.

[0025] Figure 5 The diagram shows a first schematic of the stack structure of the present invention being arranged in a shielding block to receive high-energy rays.

[0026] Figure 6 This diagram illustrates a second configuration of the stack structure of the present invention.

[0027] Figure 7 The diagram shows a second schematic of the stack structure of the present invention being configured in a shielding block to receive high-energy rays.

[0028] Figure 8 The diagram shows the thickness direction of the scintillator block and the metal filter of the present invention.

[0029] Figure 9 The diagram shows the thickness, quantity, and arrangement order of the scintillator and metal filter of the present invention.

[0030] Figure 10 The diagram shown is a structural schematic of the high-energy X-ray spectrometer of the present invention.

[0031] Component designation explanation

[0032] 1 High-energy radiation source

[0033] 2 Stack Structure

[0034] 2a stack

[0035] 21 flashing blocks

[0036] 22 Metal Filters

[0037] 3 shielding blocks

[0038] The groove on the second side of the 3a shielding block

[0039] Through-hole unit on the first side of the 3b shielding block

[0040] 31 Through holes on the first side of the shielding block

[0041] 4 reflectors

[0042] 5 detectors

[0043] 6 sunshades

[0044] 6a First light-transmitting hole

[0045] 6b Second light aperture

[0046] 7. Dipole deflecting magnet

[0047] 7a The N pole of a two-pole deflecting magnet

[0048] 7b Dipole deflector magnet's S pole

[0049] 8 Wide-angle short focal length lens

[0050] Thickness of d1 flash block

[0051] Thickness of d2 metal filter Detailed Implementation

[0052] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0053] Please see Figures 1-10 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0054] There is a stacked spectrometer based on scintillators and photodetectors that can measure the gamma-ray spectrum in real time, but the following problems still exist: (1) The spectrum interpretation problem has not been optimized, resulting in a large condition number and obvious ill-conditioning of the response matrix, which amplifies the error in the spectrum interpretation process; (2) The influence of secondary particles (such as electrons and scattered photons) generated by high-energy gamma-ray interactions on the light output of the scintillator has not been fully considered; (3) Optical and particle crosstalk between adjacent scintillator layers will damage the channel independence and reduce the reliability of the spectrum.

[0055] Therefore, to address the above problems, this invention proposes a high-energy ray detection device and a high-energy ray spectrometer, the specific technical solution of which is as follows:

[0056] Example 1

[0057] like Figure 1As shown, this embodiment provides a high-energy ray detection device, including: a high-energy ray source 1, a stack structure 2, a shielding block 3, a reflector 4, a detector 5, and a light shield 6.

[0058] like Figure 1 As shown, the high-energy ray source 1 is used to emit high-energy rays and is arranged opposite to the first side of the shielding block 3; the high-energy ray source 1 is located outside the light shield 6, and the first light-transmitting hole 6a of the light shield 6 is arranged at the corresponding position on the light shield 6 of the light path of the high-energy rays.

[0059] Specifically, in this embodiment, high-energy rays are positioned opposite each other on the first side of the shielding block 3 and strike the first side of the shielding block 3 through the first light-transmitting hole 6a of the light-shielding cover 6. The rays are then transmitted to the stack structure 2 located within the shielding block 3 via the through-hole unit 3b on the first side. The size of the first light-transmitting hole 6a is set according to the diameter of the high-energy rays. As an example, the high-energy ray source 1 is a gamma-ray source with an emission frequency of 10 Hz for transient high-pulse gamma-ray spectrum measurement, or it can be a stably emitted gamma-ray source for continuous steady-state gamma-ray spectrum measurement. In practical applications, the specific type and emission frequency of the high-energy ray source 1 are set as needed, and are not limited to this embodiment.

[0060] like Figure 1 As shown, shielding block 3 shields stray scattered lines, and the first and second sides of shielding block 3 are adjacent.

[0061] Specifically, in this embodiment, since the environment in which the high-energy ray detection device is located contains a large amount of stray scattered rays, a shielding block 3 is required. The stack structure 2 is then placed within the groove 3a on the second side of the shielding block 3. This allows the stack structure 2 to receive high-energy rays from the high-energy ray source 1 only through the through-hole unit 3b on the first side of the shielding block 3. Furthermore, the visible light converted by the stack structure 2 can exit from the second side of the shielding block 3 through the groove 3a on the second side. As an example, the shielding block 3 can be a lead block. In practical applications, the specific type of shielding block 3 can be selected as needed, and is not limited to this embodiment.

[0062] like Figure 1 As shown, the stack structure 2 includes n stacks 2a arranged sequentially from top to bottom, where n is a natural number greater than or equal to 2; the n stacks 2a are arranged in the grooves 3a on the second side, and through-hole units 3b are provided on the first side; the n stacks 2a receive high-energy rays through the through-hole units 3b, and the high-energy rays are converted into visible light based on n response matrices that correspond one-to-one with the n stacks 2a, and the n response matrices are all different; the visible light is transmitted from the second side to the outside of the shielding block 3.

[0063] Specifically, in this embodiment, n stacks 2a are arranged sequentially, one above the other, and are positioned in the groove 3a on the second side of the shielding block 3, as shown below. Figure 2 and Figure 3 As shown, there are a grooves 3a, where a is a natural number greater than or equal to 1. These a grooves 3a are arranged sequentially from top to bottom on the second side of the shielding block 3: [Example image would be inserted here]. Figure 4 and Figure 5 ( Figure 5 As shown in the diagram (not shown, reflector 4), multiple stacks 2a are stacked one on top of the other within a corresponding groove 3a; or, as shown in the diagram... Figure 6 and Figure 7 ( Figure 7 As shown in the diagram (not including mirror 4), a stack 2a is disposed within a corresponding recess 3a; wherein the number of recesses 3a can be greater than, equal to, or less than the number of stacks 2a. Further, as... Figure 2 and Figure 3 As shown, the through-hole unit 3b on the first side includes b through holes 31 arranged sequentially from top to bottom, where b is a natural number greater than or equal to 1, such as... Figure 4 and Figure 5 As shown, multiple stacks 2a stacked vertically receive high-energy rays based on a corresponding through-hole 31, or, as... Figure 6 and Figure 7 As shown, a stack 2a receives high-energy rays based on a corresponding through-hole 31; wherein the number of through-holes 31 can be greater than, equal to, or less than the number of stacks 2a. In practical applications, the specific correspondence between stacks 2a, grooves 3a, and through-holes 31 can be set as needed, and is not limited to this embodiment.

[0064] Specifically, in this embodiment, such as Figure 4 and Figure 6As shown, stack 2a includes x scintillating blocks 21 and y metal filters 22, where x is a natural number greater than or equal to 2 and y is a natural number greater than or equal to 1. From the first side to the opposite side, the x scintillating blocks 21 and y metal filters 22 of one stack 2a are alternately stacked. Furthermore, a scintillating block 21 can be composed of a single type of scintillating material or multiple consecutively arranged scintillating materials of the same type. Additionally, the materials used for the x scintillating blocks 21 in one stack 2a can be the same or different, and the materials used for the y metal filters 22 can also be the same or different; no specific restrictions are imposed here. Furthermore, the function of the scintillator 21 is to convert high-energy rays into visible light signals, and the function of the metal filter 22 is to selectively attenuate the energy of high-energy rays, so that high-energy rays of different energies enter different scintillator 21s with different probabilities. As an example, the scintillator 21 can be any scintillator material selected from scintillator crystals (including thallium-doped cesium iodide, bismuth germanate, yttrium lutetium silicate, etc.) and organic scintillators (including plastic scintillators). The metal filter 22 can be any metal material selected from aluminum, copper, or tin. In practical applications, the specific types of scintillator 21 and metal filter 22 are set as needed, and are not limited to this embodiment. Furthermore, each scintillator 21, except for the surface facing the second side, has a reflective coating on all surfaces. The reflective coating is used to limit the transmission direction of visible light converted from high-energy rays by the scintillator, so that visible light only exits from the second side of the shielding block 3 and is transmitted outside the shielding block 3. The reflective coating can also reduce the influence of secondary particles and optical crosstalk, thereby improving the measurement accuracy. As an example, the reflective coating can be an enhanced specular reflective film. In practical applications, the specific type of reflective coating can be set as needed, and is not limited to this embodiment. Furthermore, the stack 2a also includes Mylar spacers, which are disposed between any adjacent scintillation blocks 21 in the stack 2a. The function of the Mylar spacers is to enhance the reflection of visible light, suppress the cross-layer deposition of secondary electrons, and suppress optical crosstalk, thereby improving the accuracy of the measurement.

[0065] It should be noted that high-energy rays are converted into visible light based on n response matrices corresponding one-to-one with n stacks 2a. The response matrix corresponding to each stack 2a is determined by the number and thickness of scintillation blocks 21, the number and thickness of metal filters 22, and the arrangement order of the scintillation blocks 21 and metal filters 22 in the stack 2a. Furthermore, the incident energy spectrum S of the high-energy rays can be converted into a response signal D of the high-energy rays based on a response matrix R corresponding to one stack 2a. The incident energy spectrum S can be deduced from the response signal D and the response matrix R. The response signal D of the high-energy rays is represented by the converted visible light and can be converted into a corresponding electrical signal by the detector 5. Even further, the n response matrices corresponding one-to-one with the n stacks 2a are all different. The complementary responses between the n response matrices can achieve joint inversion of the n channels, thereby reducing the uncertainty in the spectral interpretation process and improving the accuracy of the spectral interpretation. Furthermore, since the response matrix R is related to the number and thickness of the scintillation blocks 21, the number and thickness of the metal filters 22, and the arrangement relationship between the scintillation blocks 21 and the metal filters 22, after confirming the materials used for the scintillation blocks 21 and the metal filters 22, by minimizing the condition number of the response matrix R, the number and thickness of the scintillation blocks 21, the number and thickness of the metal filters 22, and the arrangement order of each scintillation block 21 and each metal filter 22 in the stack 2a can be obtained. This reduces the ill-conditioned nature of the response matrix and reduces the error in the spectral interpretation process. Furthermore, as... Figure 8 As shown, the thickness d1 of the scintillator 21 refers to the dimension of the scintillator 21 in the direction from the first side to the opposite side of the first side, and the thickness d2 of the metal filter 22 refers to the dimension of the metal filter 22 in the direction from the first side to the opposite side of the first side. As an example, such as... Figure 9As shown, the scintillator block 21 can be made of thallium-doped cesium iodide (CsI:Tl) and bismuth germanate (BGO) materials, and the metal filter 22 can be made of aluminum (Al) and copper (Au) materials. In order to minimize the condition number of the response matrix corresponding to the stack 2a, the number of scintillators is 13, and the thicknesses are 0.2cm, 0.2cm, 0.22cm, 0.53cm, 0.67cm, 0.38cm, 0.51cm, 0.66cm, 1.62cm, and 2. The metal filters 22 are 46cm, 2.23cm, 4.99cm, and 5cm thick, with a total quantity of 4. Their thicknesses are 0.22cm, 1.16cm, 1.38cm, and 0.92cm, respectively, and they are sequentially arranged between scintillators with thicknesses of 0.53cm and 0.67cm, 0.66cm and 1.62cm, 2.46cm and 2.23cm, and 4.99cm and 5cm. In practical applications, the number and thickness of the scintillator blocks 21, the number and thickness of the metal filters 22, and the arrangement order of the scintillator blocks 21 and the metal filters 22 in the stack 2a can be set as needed, and are not limited to this embodiment.

[0066] like Figure 1 As shown, the reflector 4 receives visible light and reflects it to the detector 5. The reflector 4 is positioned opposite to the second side. The detector 5 converts the visible light into a corresponding electrical signal.

[0067] Specifically, in this embodiment, since the stack structure 2 is disposed in the groove 3a on the second side of the shielding block 3, the visible light converted by each scintillator 21 in the stack 2a can be emitted from the second side of the shielding block 3 to the outside of the shielding block 3 and transmitted to the reflector 4 disposed opposite to the second side. Further, the reflecting surface of the reflector 4 is opposite to the second side of the shielding block 3. The reflector 4 reflects the visible light to the detector 5. The detector 5 can obtain the response signal D of the high-energy ray based on the visible light, and decipher the incident energy spectrum S of the high-energy ray based on the response matrix R and the response signal D; wherein the incident angle of the visible light on the reflecting surface of the reflector 4 is greater than 0° and less than 90°. As an example, such as... Figure 1 As shown, when each scintillator 21 is horizontally placed in the groove 3a of the shielding block 3, a reflector 4 with a reflective surface at a 45-degree angle to the horizontal plane is selected. The incident angle of visible light on the reflective surface is 45°. The reflected visible light is perpendicular to the incident visible light and is transmitted to the detector 5 located directly above the reflector 4. The detector 5 is an sCMOS detector or a CCD detector, used for high-speed data readout to achieve real-time high-energy ray detection. In practical applications, the specific types of reflector 4 and detector 5 can be set as needed, and are not limited to this embodiment.

[0068] Specifically, in this embodiment, such as Figure 7As shown, the high-energy ray detection device also includes a secondary deflector magnet 7. The secondary deflector magnet 7 is disposed between the high-energy ray source 1 and the first side of the shielding block 3. The N pole 7a and the S pole 7b of the secondary deflector magnet are arranged relative to each other based on the high-energy ray, so that the magnetic field generated by the secondary deflector magnet 7 acts on the high-energy ray optical path between the high-energy ray source 1 and the first side, in order to remove charged particles in the high-energy ray and improve the measurement purity of the high-energy ray.

[0069] like Figure 1 As shown, the high-energy ray source 1, stack structure 2, shielding block 3 and reflector 4 are all set inside the light shield 6; the detector 5 is set outside the light shield 6, and the second light-transmitting hole 6b of the light shield 6 is set at the corresponding position on the light shield 6 of the visible light path, and the light entrance of the detector 5 is aligned with the second light-transmitting hole 6b.

[0070] Specifically, in this embodiment, the light shield 6 is made of an opaque material to prevent stray visible light from entering the detector 5. After the stack structure 2, shielding block 3, and reflector 4 are assembled, the light shield 6 houses the stack structure 2, shielding block 3, and reflector 4. Furthermore, the light inlet of the detector 5 needs to be aligned with the second light-transmitting hole 6b, and the size of the second light-transmitting hole 6b is adapted to the size of the light inlet of the detector 6, so that stray light from the outside cannot enter the light shield 6.

[0071] Specifically, in this embodiment, such as Figure 1 As shown, the high-energy ray detection device also includes a wide-angle short-focal-length lens 8, which is located inside the light shield 6 and positioned in the visible light path between the reflector 4 and the detector 5. Furthermore, since visible light only exits from the second side, only one reflector 4 is needed, simplifying the visible light path design. Moreover, by using the wide-angle short-focal-length lens 8, the visible light path is significantly shortened, thus greatly reducing the overall size of the high-energy ray detection device and significantly increasing its ease of use.

[0072] Example 2

[0073] like Figure 10 As shown, this embodiment provides a high-energy X-ray spectrometer, including: a computer and a high-energy X-ray detection device.

[0074] like Figure 10 As shown, the computer is electrically connected to the detector 5 of the high-energy ray detection device to acquire the response signal of high-energy rays in order to analyze the incident energy spectrum of high-energy rays.

[0075] Specifically, in this embodiment, the computer obtains the response signal D of high-energy rays based on the electrical signal converted from visible light, and obtains the incident energy spectrum S of high-energy rays through inverse kinematics based on the known response matrix R. Complementary measurements can be achieved through the n distinct response matrices of the n stacks 2a to improve the accuracy of spectral interpretation. Furthermore, when minimizing the condition number of the response matrix, the computer can use a genetic algorithm to calculate the number and thickness of scintillation blocks 21, the number and thickness of metal filters 22, and the arrangement order of each scintillation block 21 and each metal filter 22 in the stack 2a, thereby improving computational efficiency.

[0076] It should be noted that this embodiment may use the high-energy ray detection device of Embodiment 1, or other high-energy ray detection devices that are the same as or similar to the concept of this invention, and is not limited to this embodiment.

[0077] In summary, the high-energy ray detection device of the present invention includes: a high-energy ray source, a stacked structure, a shielding block, a reflector, a detector, and a light shield; the stacked structure, the shielding block, and the reflector are all disposed inside the light shield, while the high-energy ray source and the detector are disposed outside the light shield; the high-energy ray source emits high-energy rays through a first light-transmitting hole to a first side of the shielding block; the stacked structure includes n stacks with distinct response matrices, the n stacks are disposed in grooves on a second side of the shielding block, and receive high-energy rays through through-hole units on the first side and convert them into visible light; the visible light is emitted from the second side and transmitted to the reflector, the reflector reflects the visible light to the detector through a second light-transmitting hole, and the detector converts the visible light into a corresponding electrical signal to obtain the response signal D of the high-energy ray. The high-energy ray spectrometer of the present invention includes: a computer and a high-energy ray detection device; the computer is electrically connected to the detector of the high-energy ray detection device and performs spectral analysis on the high-energy rays. The present invention has the advantages of strong spectral analysis stability, high measurement accuracy, low spectral analysis uncertainty, fast readout speed, compact structure, and strong anti-electromagnetic interference capability. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0078] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A high-energy ray detecting apparatus characterized by comprising: The high-energy ray detection device comprises at least a high-energy ray source, a stack structure, a shielding block, a mirror, a detector and a light shield. The stack structure, the shielding block and the mirror are arranged in the light shield. The high-energy ray source is arranged opposite to the first side of the shielding block and is used to emit high-energy rays. The shielding block is used to shield stray rays, and the first side and the second side of the shielding block are adjacent. The stack structure comprises n stacks arranged from top to bottom, and n is a natural number greater than or equal to 2. The n stacks are arranged in the groove of the second side, and a through-hole unit is arranged on the first side. The n stacks receive the high-energy rays through the through-hole unit, and the high-energy rays are converted into visible light based on n response matrices corresponding to the n stacks.

2. The high-energy ray detecting apparatus according to claim 1, characterized by: The visible light is transmitted from the second side to the outside of the shielding block.

3. The high-energy ray detecting apparatus according to claim 1, characterized by: The mirror receives the visible light and reflects it to the detector.

4. The high-energy radiation detection apparatus according to any one of claims 1 to 3, characterized by: The detector converts the visible light into corresponding electrical signals and is arranged outside the light shield. A second light hole of the light shield is arranged at a corresponding position of the light path of the visible light on the light shield, and the light inlet of the detector is aligned with the second light hole.

5. The high-energy radiation detection apparatus according to claim 4, characterized by: A plurality of stacks are arranged in a corresponding groove from top to bottom.

6. The high-energy radiation detection apparatus according to claim 4, characterized by: The through-hole unit comprises b through-holes arranged from top to bottom, and b is a natural number greater than or equal to 1.

7. The high-energy radiation detection apparatus according to claim 4, characterized by: A plurality of stacks receive the high-energy rays based on a corresponding through-hole, or a stack receives the high-energy rays based on a corresponding through-hole.

8. The high-energy ray detecting apparatus according to claim 1, characterized by: The stack comprises x scintillation blocks and y metal filters, x is a natural number greater than or equal to 2, and y is a natural number greater than or equal to 1. The scintillation blocks and the metal filters in the stack are alternately arranged from the first side to the opposite side of the first side. The number and thickness of the scintillation blocks, the number and thickness of the metal filters, and the arrangement order of the scintillation blocks and the metal filters in the corresponding stack are set based on the minimum condition number of the response matrix corresponding to the stack. Except for the surface facing the second side, all surfaces of the scintillation block are provided with a reflective coating for limiting the transmission direction of the visible light. The stack further comprises a Mylar spacer arranged between any adjacent scintillation blocks in the stack. The high-energy ray detection device further comprises a two-stage deflection magnet arranged between the high-energy ray source and the first side, and two poles of the two-stage deflection magnet are arranged opposite based on the high-energy rays for removing charged particles in the high-energy rays.

9. The high-energy ray detecting apparatus according to claim 1, wherein: The high-energy ray detection device further comprises a wide-angle short-focus lens located in the light shield and arranged in a visible light path between the reflector and the detector.

10. A high-energy radiation spectrometer, characterized by, The high-energy ray spectrometer at least comprises a computer and the high-energy ray detection device according to any one of claims 1-9. The computer is electrically connected to the detector of the high-energy ray detection device, and is configured to acquire a response signal of the high-energy ray to analyze an incident energy spectrum of the high-energy ray.

Images