Neutron diffraction multichannel collimation device

Abstract

The invention discloses a neutron diffraction multichannel collimation device, and belongs to the technical field of neutron scattering spectrometers. The neutron diffraction multichannel collimation device comprises bases, a separation aluminum plate and a detector, the bases are of an arc-shaped structure, the two bases are oppositely arranged, and each base is provided with a plurality of installation cavities distributed in the circumferential direction of the base at intervals; a plurality of partition aluminum plates which are arranged at intervals in the vertical direction are arranged in each mounting cavity, and a channel for neutron beams to pass through is formed between every two adjacent partition aluminum plates; and the detectors are in one-to-one correspondence with the channels. The neutron diffraction multichannel collimation device can optimize neutron signals and reduce stray background signals, so that the accuracy of experimental results is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of neutron scattering spectrometers, and in particular to a neutron diffraction multi-channel collimation device. Background Art

[0002] Compared to X-rays, neutrons offer advantages such as superior penetrating power, sensitivity to light elements, isotope identification, and the ability to possess spin and magnetic moments. Furthermore, they are non-destructive to samples, making neutron scattering technology widely used in the research of energy materials, magnetic materials, and engineering materials. Neutrons are incident on a sample material, interacting with the atomic nuclei or magnetic moments within the material, scattering in all directions. By measuring the changes in the energy and momentum of the scattered neutrons, information about the material's microstructure and motion can be obtained.

[0003] A neutron diffraction multi-channel collimator is an essential component of a neutron scattering spectrometer. Its primary function is to limit and guide the neutron beam's path and direction, ensuring that the beam strikes the sample at a specific angle and direction. This ensures a low-background experimental signal and ensures the quality of the experimental results. However, existing neutron diffraction multi-channel collimators often suffer from spurious backgrounds in the neutron diffraction signal, resulting in poor signal quality and low accuracy in the experimental results.

[0004] Therefore, there is an urgent need for a neutron diffraction multi-channel collimation device to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve or at least alleviate some or all of the above problems. To this end, the present invention aims to provide a neutron diffraction multi-channel collimation device that can further optimize the neutron signal, reduce the experimental background, and thus ensure the accuracy of the experimental results.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0007] A neutron diffraction multi-channel collimation device, comprising:

[0008] The base is an arc-shaped structure, and the two bases are arranged opposite to each other, and each base is formed with a plurality of installation cavities spaced along its circumference;

[0009] A partition aluminum plate, wherein each of the installation cavities is provided with a plurality of the partition aluminum plates spaced apart in the vertical direction, and a channel for the neutron beam to pass through is formed between two adjacent partition aluminum plates;

[0010] The detectors are arranged in one-to-one correspondence with the channels.

[0011] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, the surface of the separating aluminum plate is coated with a coating capable of absorbing neutron beams.

[0012] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, each of the two opposite cavity walls in the installation cavity is provided with slots corresponding to the partition aluminum plates therein, and both side edges of the partition aluminum plates are provided with plug-in protrusions, which can be plugged into the slots on the corresponding sides.

[0013] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, each side of the partition aluminum plate along the width direction is provided with a plurality of the plug-in protrusions arranged at intervals along the length direction thereof.

[0014] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, each of the partition aluminum plates is further provided with a corresponding tensioning assembly, and the tensioning assembly includes:

[0015] A limiting member, wherein the limiting member includes a plug-in portion and a connecting portion connected to each other, and a limiting groove is provided on the partition aluminum plate corresponding to the plug-in portion, and the plug-in portion can be limited in the limiting groove;

[0016] A locking piece is provided, wherein the locking piece can lock the connecting portion on the base.

[0017] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, the shape of the plug-in portion is T-shaped, and the limiting groove is a T-shaped groove.

[0018] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, the partition aluminum plate is arranged at an angle to the horizontal plane.

[0019] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, the base includes a base, side plates and a top plate, the top plate is located above the base, and the two are arranged in parallel and spaced apart; a plurality of side plates are erected between the base and the top plate at circumferential intervals along the base, and the installation cavity is formed between two adjacent side plates and between the base and the top plate.

[0020] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, a first positioning hole is provided on the base, a second positioning hole is provided on the side plate corresponding to the first positioning hole, and the positioning pins are sequentially passed through the first positioning hole and the second positioning hole.

[0021] As a preferred solution of the neutron diffraction multi-channel collimation device provided by the present invention, a first reinforcement member is provided at an angular position between the base and the side plate; and / or

[0022] A second reinforcement member is provided between two adjacent side plates.

[0023] The beneficial effects of the present invention are:

[0024] The neutron diffraction multi-channel collimation device provided by the present invention includes a base, a partitioning aluminum plate, and a detector. The base has an arc-shaped structure, and two bases are arranged opposite each other. Each base is formed with multiple mounting cavities spaced apart along its circumference; each mounting cavity is provided with multiple partitioning aluminum plates spaced apart along the vertical direction, and a channel for the neutron beam to pass through is formed between two adjacent partitioning aluminum plates; the detectors are arranged in a one-to-one correspondence with the channels. Experimental verification has shown that this arrangement can optimize the neutron signal and reduce stray background signals, thereby ensuring the accuracy of the experimental results. By providing the partitioning aluminum plates, on the one hand, the channel formed between the two adjacent partitioning aluminum plates can guide the neutron beam to perform diffraction measurement in a predetermined direction, thereby achieving precise experiments on the internal structure of the material. On the other hand, the partitioning aluminum plates can effectively block the radiation of the neutron beam, thereby protecting the measuring equipment from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0026] Figure 1 1 is a schematic structural diagram of a neutron diffraction multi-channel collimation device provided by an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Schematic diagram of the local structure;

[0028] Figure 3 yes Figure 2 A local enlarged view at point A;

[0029] Figure 4 Schematic diagram of the structure of the partition aluminum plate provided by an embodiment of the present invention;

[0030] Figure 5 yes Figure 4 A partial enlarged view at point B;

[0031] Figure 6 It is a structural schematic diagram of the side panel provided by an embodiment of the present invention.

[0032] Reference numerals:

[0033] 100, base; 1001, mounting cavity; 110, base; 120, side panel; 121, slot; 122, second positioning hole; 123, mounting slot; 130, top panel;

[0034] 200, partition aluminum plate; 2001, channel; 201, plug-in protrusion; 202, limit groove. DETAILED DESCRIPTION

[0035] Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings.

[0036] In the present invention, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0037] In this disclosure, the term "and / or" describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this disclosure generally indicates that the related objects are in an "and / or" relationship.

[0038] In the present invention, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the presence of an intermediary, while an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0039] In the present invention, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values that do not employ relative terms should also be disclosed as specific values with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0040] In the present invention, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0041] In the present invention, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present invention. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front, and lower back, etc.

[0042] Figure 1 A schematic structural diagram of the neutron diffraction multi-channel collimation device provided in this embodiment is shown. Figure 2 Shown Figure 1 Schematic diagram of the local structure. Figure 1-Figure 2 As shown, this embodiment provides a neutron diffraction multi-channel collimation device, which includes a base 100, a partition aluminum plate 200 and a detector (not shown in the figure). The base 100 is an arc-shaped structure, and the two bases 100 are arranged opposite to each other. Each base 100 is formed with a plurality of installation cavities 1001 arranged at intervals along its circumference; each installation cavity 1001 is provided with a plurality of partition aluminum plates 200 arranged at intervals along the vertical direction, and a channel 2001 for the neutron beam to pass through is formed between two adjacent partition aluminum plates 200; the detector and the channel 2001 are arranged in a one-to-one correspondence.

[0043] The neutron diffraction multi-channel collimation device provided in this embodiment forms multiple channels 2001 for the neutron beam to pass through by arranging multiple partition aluminum plates 200 at intervals on the base 100, and each channel 2001 corresponds to a detector. Experimental verification shows that this arrangement can optimize the neutron signal and reduce stray background signals, thereby ensuring the accuracy of the experimental results; by arranging the partition aluminum plates 200, on the one hand, the channel 2001 formed between two adjacent partition aluminum plates 200 can guide the neutron beam to perform diffraction measurement in a predetermined direction to achieve accurate experiments on the internal structure of the material; on the other hand, the partition aluminum plates 200 can effectively block the radiation of the neutron beam, thereby protecting the measuring equipment from damage.

[0044] It should be noted that the detector is a device well known in the art, and the specific structure and working principle of the detector are not described in detail in this embodiment.

[0045] like Figure 1 As shown, the sum of the central angles of the two arc-shaped bases 100 is less than 360°, forming two escape spaces between the two bases 100. Operators can use these escape spaces to load and unload materials or repair malfunctioning experimental equipment. This embodiment does not limit the specific values of the circular angles of the bases 100, and designers can adjust them adaptively based on actual experimental requirements.

[0046] Optionally, the surface of the aluminum separator 200 is coated with a neutron-absorbing coating. When stray neutrons strike the aluminum separator 200, they are absorbed by the coating. Only neutrons that can pass through the channel 2001 can enter the detector. This effectively absorbs stray neutron signals without blocking valid neutron signals, further reducing the experimental background and ensuring the accuracy of the experimental results. In this embodiment, the coating on the aluminum separator 200 is a boron-containing material.

[0047] like Figure 2As shown, the base 100 includes a base 110, side panels 120, and a top panel 130. The top panel 130 is located above the base 110, and the two are arranged parallel and spaced apart. A plurality of side panels 120 are arranged vertically and spaced apart along the circumference of the base 110 between the base 110 and the top panel 130. The aforementioned mounting cavity 1001 is enclosed between two adjacent side panels 120 and between the base 110 and the top panel 130. In this embodiment, each base 100 has three bases 110, and the top panels 130 are arranged one-to-one with the bases 110. The number of side panels 120 is nine, and the base 110, side panels 120, and top panel 130 enclose eight mounting cavities 1001. Each mounting cavity 1001 is provided with 25 partitioning aluminum panels 200, thereby forming 24 channels 2001 within each mounting cavity 1001. This embodiment facilitates the processing of each structure, simplifies the processing process, and improves processing efficiency by configuring the base 100 as a separate multiple bases 110, multiple top panels 130, and multiple side panels 120. Of course, this embodiment does not limit the specific number of bases 110, top panels 130, side panels 120, and partition aluminum panels 200, and designers can adjust them according to actual experimental requirements.

[0048] Figure 3 Shown Figure 2 A partial enlarged view at point A. Figure 3 Combined with Figure 2 As shown, a first positioning hole is provided on the base 110, and a second positioning hole 122 is provided on the side panel 120 corresponding to the first positioning hole. A positioning pin (not shown) is sequentially inserted into the first positioning hole and the second positioning hole 122. By providing the positioning pin, quick positioning and installation between the side panel 120 and the base 110 can be achieved.

[0049] Optionally, a first reinforcement member is provided at the corner between the base 110 and the side panel 120. The provision of the first reinforcement member can serve as a structural reinforcement and ensure that the base 110 and the side panel 120 are always connected at a 90° angle. In this embodiment, the first reinforcement member is made of square steel, which has a simple structure, is easy to obtain, and can reduce processing costs. The first reinforcement member is connected to the base 110 and the side panel 120 via fasteners, ensuring a stable connection between the first reinforcement member and the base 110 and between the first reinforcement member and the side panel 120.

[0050] Optionally, a second reinforcement member is provided between two adjacent side panels 120. The two ends of the second reinforcement member respectively abut against the corresponding two side panels 120, thereby maintaining a predetermined distance between the two adjacent side panels 120. In this embodiment, the second reinforcement member is a cylindrical structure and is connected to the side panels 120 via fasteners. This structure is simple, easy to install, and provides a secure connection. The coordination between the first and second reinforcement members ensures the structural stability of the entire base 100.

[0051] Figure 4 FIG. 2 shows a schematic structural diagram of the partition aluminum plate 200 provided in this embodiment. Figure 5 Shown Figure 4 A partial enlarged view at point B. Figure 6 FIG. 1 shows a schematic structural diagram of the side panel 120 provided in this embodiment. Figure 4-Figure 6 Combined with Figure 3 As shown, each mounting cavity 1001 has two opposing walls provided with slots 121 corresponding to the partitioning aluminum plates 200 therein. Both sides of the partitioning aluminum plates 200 are provided with insertion protrusions 201 that can be inserted into the corresponding slots 121. The provision of these interlocking protrusions 201 and slots 121 facilitates the installation of the partitioning aluminum plates 200 on the base 100. Operators simply align the insertion protrusions 201 on the partitioning aluminum plates 200 with the corresponding slots 121 on the base 100, making installation easy and enabling quick installation of the partitioning aluminum plates 200 on the base 100. The slots 121 are provided on the side panels 120.

[0052] Optionally, each side of the partition aluminum plate 200 along the width direction is provided with a plurality of plug-in protrusions 201 spaced apart along its length direction. Multiple plug-in protrusions 201 are simultaneously plugged into the slots 121 of the corresponding mounting cavities 1001 to further ensure the stability of the partition aluminum plate 200 on the base 100 and prevent a single plug-in protrusion 201 from being broken due to excessive force, which would affect the experimental process.

[0053] It needs to be explained that, Figure 4 Combined with Figure 1 As shown, the length direction of the partition aluminum plate 200 is parallel to the radial direction of the circle formed by the two bases 100 , and the width direction of the partition aluminum plate 200 is perpendicular to the radial direction of the circle formed by the two bases 100 .

[0054] like Figure 3-Figure 6 As shown, each partition aluminum plate 200 is also provided with a corresponding tensioning assembly. The tensioning assembly (not shown) includes a limiter and a locking member. The limiter includes a plug-in portion and a connecting portion that are connected. A limit slot 202 is provided on the partition aluminum plate 200 corresponding to the plug-in portion, and the plug-in portion can be limited in the limit slot 202; the locking member can lock the connecting portion to the base 100. By providing a tensioning assembly, the partition aluminum plate 200 can be stably installed on the base 100 and can be prevented from deformation during use. At the same time, the provision of the tensioning assembly can also enhance the structural strength of the partition aluminum plate 200. In this embodiment, the locking member is a locking screw that can pass through the connecting portion and be screwed onto the base 100. The threaded connection has the advantages of a simple structure, a tight connection, and easy assembly and disassembly.

[0055] Furthermore, each tensioning assembly includes two locking members to further ensure the stability of the connection between the stopper and the base 100. Optionally, a mounting groove 123 for accommodating the connecting portion is further provided in the mounting cavity 1001 (specifically on the side panel 120), so as to achieve accurate positioning of the connecting portion and tighten the partition aluminum plate 200 along its length to prevent the partition aluminum plate 200 from deforming along its length during use.

[0056] Optionally, at least two tensioning assemblies are provided on both sides of each aluminum separator plate 200, with the at least two tensioning assemblies on each side spaced apart along the length of the aluminum separator plate 200. This design further ensures the tensioning effect of the tensioning assemblies on the aluminum separator plates 200, and multiple tensioning assemblies can tension the aluminum separator plates 200 across their width, further preventing deformation. This embodiment does not limit the specific number of tensioning assemblies corresponding to the two sides of each aluminum separator plate 200, and designers can adjust this number based on actual installation requirements.

[0057] In this embodiment, each tensioning component corresponds to a mounting slot 123, and along the vertical direction, the corresponding mounting slots 123 on two adjacent slots 121 are staggered to achieve mutual avoidance of multiple tensioning components and avoid interference during assembly.

[0058] like Figure 5 As shown, in this embodiment, the limiting groove 202 is a T-shaped groove, the shape of the plug-in portion is T-shaped, and the limiting groove 202 is adapted to the plug-in portion to prevent the plug-in portion from falling out of the limiting groove 202 during the experiment, affecting the accuracy of the experimental results.

[0059] like Figure 1 and Figure 6 As shown, in this embodiment, the partition aluminum plate 200 is set at an angle to the horizontal plane. This embodiment does not limit the setting angle of the partition aluminum plate 200. Designers can adaptively adjust the setting angle of the partition aluminum plate 200 according to the distance between the experimental sample and the detector to ensure the accuracy of the experimental results.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of the present invention.

Claims

1. A neutron diffraction multi-channel collimation device, characterized in that: include: The base (100) is an arc-shaped structure, and the two bases (100) are arranged opposite to each other, and each base (100) is formed with a plurality of mounting cavities (1001) arranged at intervals along its circumference; A partitioning aluminum plate (200), wherein each of the installation cavities (1001) is provided with a plurality of the partitioning aluminum plates (200) spaced apart in a vertical direction, and a channel (2001) for the neutron beam to pass through is formed between two adjacent partitioning aluminum plates (200); The detectors are arranged in one-to-one correspondence with the channels (2001).

2. The neutron diffraction multi-channel collimation device according to claim 1, characterized in that: The surface of the partition aluminum plate (200) is coated with a coating capable of absorbing neutron beams.

3. The neutron diffraction multi-channel collimation device according to claim 1, characterized in that: Two opposite cavity walls in each installation cavity (1001) are provided with slots (121) corresponding one-to-one to the partition aluminum plate (200) therein, and both sides of the partition aluminum plate (200) are provided with plug-in protrusions (201), and the plug-in protrusions (201) can be plugged into the slots (121) on the corresponding side.

4. The neutron diffraction multi-channel collimation device according to claim 3, characterized in that: Each side of the partition aluminum plate (200) along the width direction is provided with a plurality of the plug-in protrusions (201) arranged at intervals along the length direction thereof.

5. The neutron diffraction multi-channel collimation device according to claim 1, characterized in that: Each of the partition aluminum plates (200) is also provided with a corresponding tensioning assembly, and the tensioning assembly comprises: A limiting member, the limiting member comprising a plug-in portion and a connecting portion connected to each other, a limiting groove (202) being provided on the partitioning aluminum plate (200) corresponding to the plug-in portion, and the plug-in portion being capable of being limited in the limiting groove (202); A locking piece capable of locking the connecting portion onto the base (100).

6. The neutron diffraction multi-channel collimation device according to claim 5, characterized in that: The shape of the plug-in portion is T-shaped, and the limiting groove (202) is a T-shaped groove.

7. The neutron diffraction multi-channel collimation device according to claim 1, characterized in that: The partition aluminum plate (200) is arranged at an angle to the horizontal plane.

8. The neutron diffraction multi-channel collimation device according to any one of claims 1 to 7, characterized in that: The base (100) includes a base (110), a side plate (120) and a top plate (130), wherein the top plate (130) is located above the base (110), and the two are arranged in parallel and spaced apart; a plurality of the side plates (120) are arranged vertically between the base (110) and the top plate (130) along the circumference of the base (110), and the installation cavity (1001) is formed between two adjacent side plates (120) and the base (110) and the top plate (130).

9. The neutron diffraction multi-channel collimation device according to claim 8, characterized in that: A first positioning hole is provided on the base (110), a second positioning hole (122) is provided on the side plate (120) corresponding to the first positioning hole, and a positioning pin is sequentially inserted into the first positioning hole and the second positioning hole (122).

10. The neutron diffraction multi-channel collimation device according to claim 8, characterized in that: A first reinforcement member is provided at an angle between the base (110) and the side plate (120); And / or, a second reinforcement member is provided between two adjacent side panels (120).

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