Bonner sphere device for measuring neutron energy spectrum

Abstract

The present invention relates to a Bonner sphere device for measuring a neutron energy spectrum, the Bonner sphere device comprising: a Bonner sphere part which includes a plurality of Bonner spheres of different sizes, decelerates incident neutrons into thermal neutrons, and generates mobile charges in response to gamma rays generated from the thermal neutrons; and an electrical signal measurement part including a plurality of electrical signal measurement units for measuring electrical signals formed by the mobile charges generated from the Bonner sphere part. Therefore, neutron energy spectrum measurement using a plurality of Bonner spheres of different sizes can be performed in a single process.

Description

Bonner device for measuring neutron energy spectrum

[0001] The present invention relates to a Boner sphere device for measuring neutron energy spectra, and more specifically, to a Boner sphere device for measuring neutron energy spectra that enables efficient neutron energy spectrum measurement using a plurality of Boner spheres of different sizes in a single process.

[0002]

[0003] National R&D projects that supported this invention

[0004] Project ID: 1415186664

[0005] Assignment No.: 20227410100040

[0006] Ministry Name: Ministry of Trade, Industry and Energy

[0007] Project Management (Specialized) Agency Name: Korea Institute of Energy Technology Evaluation and Planning

[0008] Research Project Name: Support Project for Leading Public Energy Investment and New Industry Creation

[0009] Research Project Title: Patch-type Flexer Using High-Performance Inorganic Perovskite

[0010] Development of Personal Dosimeters and Real-time Remote Monitoring Systems

[0011] Contribution rate: 1 / 1

[0012] Project Performing Organization Name: Paprika Lab Co., Ltd.

[0013] Research Period: 2023.01.01 ~ 2023.12.31

[0014]

[0015] Nuclear-related facilities, such as nuclear power plants and particle accelerators, exhibit neutron spectra with various energies depending on their internal structure or location, leading to an increasing demand for neutron dose assessment and radiation protection measures for workers. In particular, with clinical trials for radiation therapy using boron-neutron reaction (BNCT) currently underway, accurate neutron assessment has become a critical factor in the medical field as well. To assess neutron exposure doses, fluence data based on neutron energy is required.

[0016] Furthermore, neutrons generated in accelerators have a wide energy distribution, ranging from thermal neutrons of several meV to fast neutrons of tens of meV. Various methods for measuring neutron energy spectra have been developed to evaluate the dose of neutrons with such a broad energy distribution.

[0017] One of the most common methods for measuring neutron energy spectra is using a Bonner Sphere Spectrometer.

[0018] A Bonner sphere spectrometer typically consists of about 10 Bonner spheres and a thermal neutron detector. Bonner spheres are composed of a material that slows down neutrons, such as polyethylene, and come in various sizes. Bonner spheres slow down incident fast neutrons and convert them into thermal neutrons, allowing the thermal neutron detector to detect signals more efficiently. The converted thermal neutrons are measured by a thermal neutron detector mounted at the center of the Bonner sphere. Proportional counters utilizing materials capable of interacting with neutrons, such as lithium iodide (LiI), helium-3 (He3), or BF3, are commonly used as thermal neutron detectors. The neutron energy spectrum is obtained through an unfolding process using the counting rates measured in each Bonner sphere and a reaction function derived through precise simulation calculations.

[0019] At this time, in order to obtain the neutron energy spectrum, the individual measurement process must be repeated for each sphere by replacing the spheres of various sizes, so there is a limit to the efficiency of measuring the neutron energy spectrum, which is reduced.

[0020]

[0021] Prior art refers to technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot necessarily be considered publicly known technology disclosed to the general public prior to the filing of the present invention.

[0022]

[0023] <Prior Art Literature>

[0024] (Patent Document 1) Republic of Korea Published Patent No. 10-2012-0040583 (Published April 27, 2012)

[0025]

[0026] In resolving the aforementioned problems, the objective of the present invention is to provide a neutron energy spectrum measuring device that can significantly improve measurement efficiency by performing neutron energy spectrum measurements using a plurality of neutron spheres of different sizes in a single process.

[0027] In addition, the objective of the present invention is to provide a neutron energy spectrum measurement device that can solve problems such as signal fluctuations caused by setup position instability that may occur when replacing neutron energy spheres, by eliminating the need to repeat the measurement process multiple times while replacing multiple spheres when measuring neutron energy spectra.

[0028] The problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person skilled in the art to which the present invention belongs from the description below.

[0029]

[0030] A Boner sphere device for measuring a neutron energy spectrum according to an embodiment of the present invention comprises: a plurality of Boner spheres having different sizes, a Boner sphere part that decelerates incident neutrons into thermal neutrons and generates a moving charge in response to gamma rays generated from the thermal neutrons; and an electrical signal measuring part comprising a plurality of electrical signal measuring units that measure an electrical signal formed by the moving charge generated from the Boner sphere part.

[0031] Additionally, each of the plurality of Bonergos may include: a substrate layer that slows down the neutrons into the thermal neutrons; a first electrode layer configured to transfer the moving charge to the electrical signal measuring part; a gamma ray detection layer that generates the moving charge in response to the gamma rays; and a second electrode layer configured to transfer the moving charge to the electrical signal measuring part.

[0032] At this time, the substrate layer, the first electrode layer, the gamma ray detection layer, and the second electrode layer may be arranged in the order described in the direction from the outside to the inside.

[0033] In this case, the above substrate layer may be composed of polyethylene.

[0034] In addition, the first electrode layer may be configured to react with the thermal neutrons to convert the thermal neutrons into gamma rays.

[0035] At this time, the first electrode layer may be composed of gadolinium (Gd).

[0036] In addition, the first electrode layer is formed by performing a deposition process using a material target constituting the first electrode layer on the lower part of the substrate layer, and the thickness of the first electrode layer can be controlled by adjusting the time of the deposition process.

[0037] At this time, the first electrode layer may be formed entirely or partially on the lower part of the substrate layer.

[0038] In addition, the gamma ray detection layer may be composed of perovskite.

[0039] At this time, the gamma ray detection layer is formed by applying a precursor solution of the material constituting the gamma ray detection layer to the lower part of the first electrode layer, and the thickness of the gamma ray detection layer can be controlled by adjusting the application time and the concentration of the precursor solution.

[0040] In this case, the gamma ray detection layer may be formed wholly or partially on the lower part of the first electrode layer.

[0041] In addition, the second electrode layer may include an electrically conductive material.

[0042] At this time, the second electrode layer may be composed of gold (Au).

[0043] In this case, the second electrode layer is formed by performing a deposition process using a material target constituting the second electrode layer on the lower part of the gamma ray detection layer, and the thickness of the second electrode layer can be controlled by adjusting the time of the deposition process.

[0044] In addition, each of the plurality of bonus sections may be configured to correspond to each of the plurality of electrical signal measuring sections.

[0045] Additionally, the neutron energy spectrum measuring device may further include: a connecting part that connects the neutron part and the electric signal part; and a control part that controls the operation of the electric signal measuring part and obtains the neutron energy spectrum by the electric signal measured by the electric signal measuring part.

[0046] In this case, the electrical signal measuring part can perform the electrical signal measurement by the plurality of electrical signal measuring parts in a single process.

[0047]

[0048] As described above, the neutron energy spectrum measurement device according to the present invention enables a significant improvement in neutron energy spectrum measurement efficiency by performing neutron energy spectrum measurement using a plurality of neutron spheres of different sizes in a single process.

[0049] In addition, the Bonner ball device for measuring neutron energy spectra according to the present invention eliminates the need to repeat the measurement process multiple times while replacing multiple Bonner balls when measuring neutron energy spectra, thereby solving problems such as signal fluctuations caused by setup position instability that may occur when replacing Bonner balls.

[0050] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art to which the present invention pertains from the description below.

[0051]

[0052] FIG. 1 is a block diagram of a Boner sphere device for measuring neutron energy spectra according to an embodiment of the present invention.

[0053] FIG. 2 is a block diagram of a bonus part according to an embodiment of the present invention.

[0054] FIG. 3 is a block diagram of an electrical signal measurement part according to an embodiment of the present invention.

[0055] FIG. 4 is a perspective view schematically showing a bonus part and a connecting part according to an embodiment of the present invention.

[0056] FIG. 5 is a schematic diagram illustrating a Boner sphere device for measuring neutron energy spectra according to an embodiment of the present invention.

[0057]

[0058] <Explanation of Symbols>

[0059] 100: Bonergu device for measuring neutron energy spectrum

[0060] 110: Bonus Part

[0061] 120: Connection part

[0062] 130: Electrical signal measurement part

[0063] 140: Control Part

[0064] 10: Base layer

[0065] 20: First electrode layer

[0066] 30: Gamma ray detection layer

[0067] 40: Second electrode layer

[0068]

[0069] In the present invention, the attached drawings may be illustrated with exaggerated expressions to distinguish it from the prior art, ensure clarity, and facilitate the understanding of the technology. Furthermore, the terms described below are defined considering their functions in the present invention; since these terms may vary depending on the intentions or conventions of the user or operator, their definitions should be based on the technical content throughout this specification. Meanwhile, the embodiments are merely exemplary details of the components presented in the claims of the present invention and do not limit the scope of the rights of the present invention; the scope of rights should be interpreted based on the technical concept throughout the specification of the present invention.

[0070] Throughout the specification, when a configuration is described as "including" a configuration, this means that, unless specifically stated otherwise, it does not exclude other configurations but may include additional configurations.

[0071] Furthermore, when it is said that one configuration is "connected," "connected," or "combined" with another configuration, this means that it is not only "directly connected," "directly connected," or "directly combined," but also that there may be cases where it is "connected with another configuration interposed," "connected with another configuration interposed," or "combined with another configuration interposed." On the other hand, when it is said that one configuration is "directly connected," "directly connected," or "directly combined" with another configuration, it should be understood that there is no other configuration in between.

[0072] In addition, when directional terms such as "front," "back," "up," "down," "left," "right," "first end," "other end," and "both ends" are used, they are used exemplarily in relation to the orientation of the disclosed drawings and should not be interpreted restrictively, and when terms such as "first" and "second" are used, they are terms used to distinguish each configuration and should not be interpreted restrictively.

[0073] In order to more clearly explain the features of the embodiments of the present invention, detailed descriptions of matters widely known to those skilled in the art to which the following embodiments pertain are omitted. Additionally, detailed descriptions of parts in the drawings that are unrelated to the description of the embodiments are omitted.

[0074] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0075]

[0076] FIG. 1 is a block diagram of a Bonner globe device for measuring a neutron energy spectrum according to an embodiment of the present invention, FIG. 2 is a block diagram of a Bonner globe part according to an embodiment of the present invention, FIG. 3 is a block diagram of an electrical signal measuring part according to an embodiment of the present invention, FIG. 4 is a perspective view schematically showing a Bonner globe part and a connecting part according to an embodiment of the present invention, and FIG. 5 is a schematic diagram for explaining a Bonner globe device for measuring a neutron energy spectrum according to an embodiment of the present invention.

[0077]

[0078] Referring to FIGS. 1 to 5, a Bonergu device (100) for measuring a neutron energy spectrum according to an embodiment of the present invention comprises a Bonergu part (110), a connecting part (120), an electrical signal measuring part (130), and a control part (140).

[0079]

[0080] The above bonus part (110) is configured to decelerate neutrons incident from the outside into thermal neutrons and generate a moving charge in response to gamma rays generated from the thermal neutrons.

[0081] The above bonus part (110) includes a plurality of bonuses (110-1, 110-2, ... 110-n) having different sizes and a central part (111). FIGS. 4 and 5 illustrate an exemplary case where the bonus part (110) has five bonuses (110-1, 110-2, 110-3, 110-4, 110-5), but embodiments of the present invention are not limited thereto, and the bonus part (110) may include the plurality of bonuses (110-1, 110-2, ... 110-n). In this specification, the five bonus spheres (110-1, 110-2, 110-3, 110-4, 110-5) shown in FIGS. 4 and 5 are described as examples of the plurality of bonus spheres (110-1, 110-2, ... 110-n) and can be used interchangeably with each other.

[0082]

[0083] The central part (111) included in the above bonus part (110) is the part between the innermost bonus part (110-1) among the plurality of bonus parts (110-1, 110-2, ... 110-n) and the connecting part (120).

[0084] The above central part (111) may be composed of an empty space, or may be composed of a material that slows down neutrons, for example, polyethylene.

[0085]

[0086] The plurality of Bonner spheres (110-1, 110-2, ... 110-n) having different sizes can be effectively used to measure neutron energy spectra with a wide energy distribution.

[0087] Each of the above plurality of Boner spheres (110-1, 110-2, ... 110-n) is configured to include a substrate layer (10), a first electrode layer (20), a gamma ray detection layer (30), and a second electrode layer (40).

[0088] The above substrate layer (10), the first electrode layer (20), the gamma ray detection layer (30), and the second electrode layer (40) may be arranged in the order described in the direction from the outside to the inside.

[0089]

[0090] The above substrate layer (10) is configured to slow down neutrons incident from the outside. That is, neutrons incident from the outside can be slowed down into thermal neutrons by the above substrate layer (10).

[0091] In one embodiment, the substrate layer (10) may be composed of polyethylene.

[0092]

[0093] The first electrode layer (20) is configured to function as an electrode and a conversion layer. That is, the first electrode layer (20) can simultaneously perform the role of an electrode that transmits a moving charge to the electric signal measuring part (130) and the role of a conversion layer that reacts with the thermal neutron to convert the thermal neutron into a gamma ray.

[0094] To this end, the first electrode layer (20) may be configured to include a material that is electrically conductive so as to function as an electrode, and at the same time can absorb thermal neutrons and convert them into gamma rays.

[0095] In one embodiment, the first electrode layer (20) may be composed of gadolinium (Gd).

[0096] Gadolinium (Gd) is one of the rare earth elements and is a soft, lustrous, silvery-white metallic element. Gadolinium (Gd) has six stable isotopes 154 Gd, 155 Gd, 156 Gd, 157 Gd, 158 Gd, 160 Gd and one radioactive isotope 152 It is composed of Gd, 158 Gd is the most abundant.

[0097] Gadolinium (Gd) can absorb neutrons, and in fact, 157 Gd is known to have the highest neutron absorption rate among stable nuclides. 157 Gd is widely used in neutron-based tumor removal surgery and is also useful in neutron radiation photography and as a shield for nuclear reactors.

[0098] When the first electrode layer (20) is composed of gadolinium (Gd), when a neutron is incident from the outside, it is decelerated into a thermal neutron by the substrate layer (10), and then the gadolinium (Gd) reacts with the thermal neutron to convert the thermal neutron into a high-energy gamma ray.

[0099] The first electrode layer (20) can be formed by performing a deposition process using a material target constituting the first electrode layer (20) on the lower part of the substrate layer (10).

[0100] In one embodiment, when the first electrode layer (20) is composed of gadolinium (Gd), the first electrode layer (20) can be formed by placing a gadolinium (Gd) target in a thermal evaporator and evaporating it under high vacuum and high temperature conditions so that gadolinium (Gd) is deposited on the lower part of the substrate layer (10).

[0101] The thickness of the first electrode layer (20) can be controlled by adjusting the time of the deposition process. That is, as the time of the deposition process for forming the first electrode layer (20) increases, the thickness of the first electrode layer (20) can increase.

[0102] The first electrode layer (20) may be formed entirely or partially on the lower part of the substrate layer (10).

[0103] The first electrode layer (20), which is partially disposed on the lower part of the substrate layer (10), can be formed by masking during the deposition process for forming the first electrode layer (20) so that it is deposited only in the desired area.

[0104] Since the plurality of Boner spheres (110-1, 110-2, ... 110-n) each have different sizes, the first electrode layer (20) can convert thermal neutrons having different energies into gamma rays according to each of the plurality of Boner spheres (110-1, 110-2, ... 110-n).

[0105]

[0106] The above gamma ray detection layer (30) is configured to generate a moving charge in response to gamma rays converted by the first electrode layer (20).

[0107] The above gamma ray detection layer (30) may be composed of perovskite.

[0108] Perovskite is a general term for materials having the general chemical formula AMX3, in which two types of cations (A, M) and one type of anion (X) combine to form a three-dimensional crystal. In this case, the A atoms are located at each vertex of the cubic unit cell, the M atoms are located at the body-centered position, i.e., at the center, and the X atoms are located at the face-centered position, i.e., at the center of each face.

[0109] Inorganic perovskites such as CaTiO3, BaTiO3, KbTiO3, and PbTiO3 have been generally known, and forms in which oxygen is present at the anion (X) site have been primarily studied. Recently, organic / inorganic hybrid perovskites, and perovskites in which inorganic or organic materials are present at the cation site and halides are present at the anion site, are gaining great attention as they possess the advantages of both inorganic and organic materials.

[0110] Perovskites possess high light absorption and excellent charge transfer capabilities, so when irradiated with gamma rays, they can generate mobile charges in response and exhibit high sensitivity and energy resolution.

[0111] Accordingly, since the gamma ray detection layer (30) is composed of perovskite, when the thermal neutron is converted into the gamma ray by the first electrode layer (20), the gamma ray detection layer (30) responds to the gamma ray and generates a moving charge.

[0112] The gamma ray detection layer (30) can be formed by applying a precursor solution of the material constituting the gamma ray detection layer (30) to the lower part of the first electrode layer (20).

[0113] In one embodiment, when the gamma ray detection layer (30) is composed of perovskite, it can be formed by dissolving a precursor of perovskite in a solvent and then applying it to the lower part of the first electrode layer (20) by an appropriate coating method, for example, a spray coating method.

[0114] The thickness of the gamma ray detection layer (30) can be controlled by adjusting the coating time and the concentration of the precursor solution. That is, as the coating time for forming the gamma ray detection layer (30) and the concentration of the precursor solution increase, the thickness of the gamma ray detection layer (30) can increase.

[0115] The gamma ray detection layer (30) may be formed entirely or partially on the lower part of the first electrode layer (20).

[0116] The gamma ray detection layer (30), which is partially disposed below the first electrode layer (20), can be formed by coating only the desired area during the coating process for forming the gamma ray detection layer (30).

[0117]

[0118] The gamma rays converted by the first electrode layer (20) vary according to each of the plurality of Bonner spheres (110-1, 110-2, ... 110-n), and the response of the gamma ray detection layer (30) to these gamma rays also varies. Accordingly, the neutron energy measured according to each of the plurality of Bonner spheres (110-1, 110-2, ... 110-n) is different, and a wide range of neutron energy spectra can be obtained using this.

[0119]

[0120] The second electrode layer (40) is configured to function as an electrode. That is, the second electrode layer (40) can perform the role of an electrode that transmits moving charges to the electrical signal measuring part (130).

[0121] The second electrode layer (40) may be composed of an electrically conductive material.

[0122] In one embodiment, the second electrode layer (40) may be composed of a metal, for example, gold (Au).

[0123] The second electrode layer (40) can be formed by performing a deposition process using a material target constituting the second electrode layer (40) on the lower part of the gamma ray detection layer (30).

[0124] In one embodiment, when the second electrode layer (40) is composed of gold (Au), it can be formed by placing a gold (Au) target in a thermal evaporator and evaporating it under high vacuum and high temperature conditions so that the second electrode layer (40) is deposited on the lower part of the gamma ray detection layer (30).

[0125] The thickness of the second electrode layer (40) can be controlled by adjusting the time of the deposition process. That is, as the time of the deposition process for forming the second electrode layer (40) increases, the thickness of the second electrode layer (40) can increase.

[0126] The second electrode layer (40) may be formed entirely or partially below the gamma ray detection layer (30).

[0127] The second electrode layer (40), which is partially disposed below the gamma ray detection layer (30), can be formed by masking during the deposition process for forming the second electrode layer (40) so that it is deposited only in the desired area.

[0128]

[0129] In this way, each of the plurality of bonar spheres (110-1, 110-2, ... 110-n) included in the bonar sphere part (110) may be configured to include the substrate layer (10), the first electrode layer (20), the gamma ray detection layer (30), and the second electrode layer (40). At this time, each of the plurality of bonar spheres (110-1, 110-2, ... 110-n) has a different size from one another, and since the mobile charge generated therefrom is different from each other, a neutron energy spectrum having a wide energy distribution can be measured. In addition, by decelerating neutrons incident from the outside into thermal neutrons, detecting gamma rays generated by the reaction between the thermal neutrons and the first electrode layer (20) containing gadolinium (Gd) using the gamma ray detection layer (30) containing perovskite, and measuring this as an electrical signal, the neutron energy spectrum can be obtained in a single measurement process rather than repeatedly performing the measurement procedure for each of the plurality of Bonner spheres (110-1, 110-2, ... 110-n).

[0130]

[0131] The plurality of bonuses (110-1, 110-2, ... 110-n) may have a structure arranged like a shell of a layered structure in which the plurality of bonuses (110-1, 110-2, ... 110-n) having different sizes are formed in multiple layers.

[0132] In one embodiment, a material that slows down neutrons, such as polyethylene, may be placed in the space between each of the plurality of Boner spheres (110-1, 110-2, ... 110-n).

[0133]

[0134] The above connecting part (120) is configured to connect the above bonus part (110) and the above electrical signal part (130).

[0135] By means of the above-mentioned connecting part (120), each of the plurality of bonuses (110-1, 110-2, ... 110-n) included in the bonuse part (110) can be connected to each of the plurality of electric signal measuring units (130-1, 130-2, ... 130-n) included in the electric signal measuring part (130). That is, each of the plurality of bonuses (110-1, 110-2, ... 110-n) can correspond to each of the plurality of electric signal measuring units (130-1, 130-2, ... 130-n).

[0136] At this time, the connecting part (120) may be configured to connect the first electrode layer (20) and the second electrode layer (40) of each of the plurality of bonus sections (110-1, 110-2, ... 110-n) to each of the corresponding plurality of electrical signal measuring sections (130-1, 130-2, ... 130-n).

[0137]

[0138] The above electrical signal measuring part (130) is configured to measure an electrical signal formed by the moving charge generated from the above bonus part (110).

[0139] The above electrical signal measuring part (130) may include a plurality of electrical signal measuring units (130-1, 130-2, ... 130-n). FIGS. 4 and 5 illustrate, by way of example, a case in which the above electrical signal measuring part (130) has five electrical signal measuring units (130-1, 130-2, 130-3, 130-4, 130-5), but embodiments of the present invention are not limited thereto, and the above electrical signal measuring part (130) may include the plurality of electrical signal measuring units (130-1, 130-2, ... 130-n). In this specification, the five electrical signal measuring units (130-1, 130-2, 130-3, 130-4, 130-5) shown in FIGS. 4 and 5 are described as examples of the plurality of electrical signal measuring units (130-1, 130-2, ... 130-n) and can be used interchangeably with each other.

[0140] In each of the plurality of bonars (110-1, 110-2, ... 110-n) of the bonar part (110), the substrate layer (10) decelerates incident neutrons into thermal neutrons, the first electrode layer (20) converts the thermal neutrons into gamma rays, and the gamma ray detection layer (30) responds to the gamma rays to generate a moving charge, and the first electrode layer (20) and the second electrode layer (40) function as electrodes to transmit the moving charge to the plurality of electrical signal measuring parts (130-1, 130-2, ... 130-n) corresponding to each of the plurality of bonars (110-1, 110-2, ... 110-n). Each of the above plurality of electric signal measuring units (130-1, 130-2, ... 130-n) can measure an electric signal formed by such moving charge.

[0141] Although not illustrated, as needed, each of the plurality of electrical signal measuring units (130-1, 130-2, ... 130-n) may further include a configuration for amplifying the electrical signal or a configuration for converting it into a digital signal.

[0142] Each of the plurality of electrical signal measuring units (130-1, 130-2, ... 130-n) can measure the electrical signal of the moving charge generated by each of the corresponding plurality of Boner units (110-1, 110-2, ... 110-n), and this process is not carried out by separate individual processes for each of the plurality of Boner units (110-1, 110-2, ... 110-n), but is carried out by a single measurement process. This process can be controlled by the control part (140).

[0143] In addition, when the first electrode layer (20), the gamma ray detection layer (30), and the second electrode layer (40) of each of the plurality of Boner spheres (110-1, 110-2, ... 110-n) are partially formed, the measurement of the electrical signal by the electrical signal measurement part (130) may be performed only in the portion where the first electrode layer (20), the gamma ray detection layer (30), and the second electrode layer (40) are formed.

[0144]

[0145] The control part (140) is configured to generally control the operation of the electric signal measuring part (130) and to obtain a neutron energy spectrum based on the electric signal measured by the electric signal measuring part (130).

[0146] The control part (140) can control the measurement of electrical signals by each of the plurality of electrical signal measuring units (130-1, 130-2, ... 130-n) included in the electrical signal measuring part (130) to be performed in a single process.

[0147] In addition, the control part (140) can obtain a neutron energy spectrum based on the electrical signal measured by the electrical signal measuring part (130).

[0148] The neutron energy spectrum can be measured through an unfolding process using the response function of the gamma ray detection layer (30) and the initial estimated spectrum data. Since such an unfolding process is widely known in the art, a detailed description thereof is omitted in this embodiment.

[0149]

[0150] As described above, the Bonner sphere device for measuring neutron energy spectra according to the present invention enables a significant improvement in the efficiency of neutron energy spectrum measurement by performing neutron energy spectrum measurement using multiple Bonner spheres of different sizes in a single process. In addition, the Bonner sphere device for measuring neutron energy spectra according to the present invention slows down incident neutrons into thermal neutrons and measures gamma rays generated by the reaction between the thermal neutrons and gadolinium (Gd) using perovskite, thereby eliminating the need to repeat the measurement process multiple times while replacing multiple Bonner spheres, which can solve problems such as signal fluctuations caused by setup position instability that may occur when replacing Bonner spheres.

[0151]

[0152] As described above, the present invention has been explained with reference to the embodiments illustrated in the drawings, but this is merely illustrative, and it should be understood that various modifications and equivalent alternative embodiments are possible based on the ordinary knowledge of the art to which the art belongs. Accordingly, the true technical scope of protection of the present invention is defined by the claims described below and should be determined based on the specific details of the invention described above.

[0153]

[0154] The present invention relates to a Bonergu device for measuring neutron energy spectra and can be used in industrial fields related to radiation measurement.

Claims

1. A Boner sphere part comprising a plurality of Boner spheres having different sizes, which decelerates incident neutrons into thermal neutrons and generates a moving charge in response to gamma rays generated from said thermal neutrons; and An electric signal measuring part comprising a plurality of electric signal measuring units for measuring an electric signal formed by the moving charge generated from the above bonus part; A Bonergu device for measuring neutron energy spectra including 2. In paragraph 1, each of the plurality of bonus parts is, A substrate layer that slows down the above neutrons into the above thermal neutrons; A first electrode layer configured to transfer the above-mentioned moving charge to the above-mentioned electrical signal measuring part; A gamma ray detection layer that generates the mobile charge in response to the gamma ray; and A second electrode layer configured to transfer the above-mentioned moving charge to the above-mentioned electrical signal measuring part; A Bonergu device for measuring neutron energy spectra, characterized by including 3. In Paragraph 2, A Bonergu device for measuring neutron energy spectra, characterized in that the substrate layer, the first electrode layer, the gamma ray detection layer, and the second electrode layer are arranged in the order described above, in a direction from the outside to the inside.

4. In paragraph 2, the above-mentioned substrate layer is, Bonergu device for measuring neutron energy spectra, characterized by being composed of polyethylene.

5. In paragraph 2, the first electrode layer is, A Bonergu device for measuring neutron energy spectra, characterized by being configured to react with the thermal neutrons to convert the thermal neutrons into gamma rays.

6. In paragraph 2, the first electrode layer is, Bonergu device for measuring neutron energy spectra, characterized by being composed of gadolinium (Gd).

7. In Paragraph 2, The first electrode layer is formed by performing a deposition process using a material target constituting the first electrode layer on the lower part of the substrate layer, and A Bonergu device for measuring neutron energy spectra, characterized in that the thickness of the first electrode layer is controlled by time control of the deposition process.

8. In paragraph 2, the first electrode layer is, A Bonergu device for measuring neutron energy spectra, characterized by being formed wholly or partially on the lower part of the above substrate layer.

9. In paragraph 2, the gamma ray detection layer is, Bonergu device for measuring neutron energy spectra, characterized by being composed of perovskite.

10. In Paragraph 2, The gamma ray detection layer is formed by applying a precursor solution of a material constituting the gamma ray detection layer to the lower part of the first electrode layer, and A Bonergu device for measuring neutron energy spectra, characterized in that the thickness of the gamma ray detection layer is controlled by adjusting the coating time and the concentration of the precursor solution.

11. In paragraph 2, the gamma ray detection layer is, A Bonergu device for measuring neutron energy spectra, characterized by being formed wholly or partially on the lower part of the first electrode layer.

12. In paragraph 2, the second electrode layer is, Bonergu device for measuring neutron energy spectra characterized by including an electrically conductive material.

13. In paragraph 2, the second electrode layer is, Bonergu device for measuring neutron energy spectra, characterized by being composed of gold (Au).

14. In Paragraph 13, The second electrode layer is formed by performing a deposition process using a material target constituting the second electrode layer on the lower part of the gamma ray detection layer, and A Bonergu device for measuring neutron energy spectra, characterized in that the thickness of the second electrode layer is controlled by time control of the deposition process.

15. In paragraph 1, each of the plurality of bonus parts is, A Bonergu device for measuring neutron energy spectra, characterized by being configured to correspond to each of the plurality of electrical signal measuring units.

16. In Paragraph 1, A connecting part connecting the above bonus part and the above electrical signal part; and A control part that controls the operation of the above-mentioned electrical signal measuring part and obtains the neutron energy spectrum by the electrical signal measured by the above-mentioned electrical signal measuring part; A Bonergu device for measuring neutron energy spectra, characterized by further including 17. In paragraph 1, the electrical signal measuring part is, Bonergu device for measuring neutron energy spectrum, characterized by performing the electrical signal measurement by the plurality of electrical signal measuring units in a single process.

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