A neutron diffraction multi-channel collimation device

Abstract

This invention discloses a multi-channel collimation device for neutron diffraction, belonging to the technical field of neutron scattering spectrometers. The device includes a base, separating aluminum plates, and a detector. The base has an arc-shaped structure, with two bases arranged opposite each other. Each base has multiple mounting cavities spaced circumferentially on it. Each mounting cavity contains multiple separating aluminum plates spaced vertically, with a channel for the neutron beam to pass between adjacent separating aluminum plates. The detector is configured in a one-to-one correspondence with each channel. This multi-channel collimation device can optimize the neutron signal and reduce stray background signals, thereby ensuring the accuracy of experimental results.

Description

Technical Field

[0001] This utility model relates to the field of neutron scattering spectrometer technology, specifically to a neutron diffraction multi-channel collimation device. Background Technology

[0002] Compared to X-rays, neutrons possess advantages such as strong 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, magnetic, and engineering materials. When neutrons are incident on a sample material, they interact with the atomic nuclei or magnetic moments within the material, scattering in various directions. By measuring the changes in the energy and momentum of the scattered neutrons, information about the material's microstructure and dynamics can be obtained.

[0003] A multi-channel collimator for neutron diffraction is an essential structure in a neutron scattering spectrometer. Its main function is to confine and guide the propagation path and direction of the neutron beam to ensure that the neutron beam is incident on the sample at a specific angle and direction, thereby obtaining an experimental signal with low background and ensuring the quality of the experimental results. However, multi-channel collimators for neutron diffraction in related technologies often suffer from stray background in the neutron diffraction signal and poor signal quality, resulting in lower accuracy of the experimental results.

[0004] Therefore, there is an urgent need for a neutron diffraction multichannel collimation device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this invention is to provide a multi-channel collimation device for neutron diffraction, which can further optimize the neutron signal, reduce experimental background, and thus ensure the accuracy of experimental results.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

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

[0008] The base has an arc-shaped structure, and two bases are arranged opposite each other. Each base has a plurality of mounting cavities arranged at intervals along its circumference.

[0009] The mounting cavity is provided with a plurality of the partition aluminum plates arranged at intervals in the vertical direction, and a channel for the neutron beam to pass through is formed between two adjacent partition aluminum plates;

[0010] Each detector is configured to correspond one-to-one with one of the channels.

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

[0012] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, each of the two opposite cavity walls in the mounting cavity is provided with a slot corresponding to the partition aluminum plate inside. Both sides of the partition aluminum plate are provided with insertion protrusions, which can be inserted into the corresponding slots.

[0013] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, each side of the separating aluminum plate along the width direction is provided with a plurality of insertion protrusions arranged at intervals along its length direction.

[0014] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, each of the separating aluminum plates is further provided with a corresponding tensioning assembly, the tensioning assembly comprising:

[0015] A limiting member, the limiting member including a plug-in part and a connecting part connected together, a limiting groove is provided on the partition aluminum plate corresponding to the plug-in part, and the plug-in part can be limited to the limiting groove;

[0016] A locking element that can lock the connecting part onto the base.

[0017] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, the insertion part is T-shaped and the limiting groove is a T-shaped groove.

[0018] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, the separating aluminum plate is set at an angle to the horizontal plane.

[0019] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, 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 at intervals along the circumference of the base between the base and the top plate, and the mounting cavity is formed between two adjacent side plates and between the base and the top plate.

[0020] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, the base is provided with a first positioning hole, and the side plate is provided with a second positioning hole corresponding to the first positioning hole, with positioning pins passing through the first positioning hole and the second positioning hole in sequence.

[0021] As a preferred embodiment of the neutron diffraction multi-channel collimation device provided by this utility model, a first reinforcing member is provided at the corner position between the base and the side plate; and / or

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

[0023] The beneficial effects of this utility model are as follows:

[0024] This invention provides a multi-channel collimation device for neutron diffraction, comprising a base, separating aluminum plates, and a detector. The base has an arc-shaped structure, with two bases arranged opposite each other. Each base has multiple mounting cavities spaced circumferentially. Each mounting cavity contains multiple separating aluminum plates spaced vertically, forming a channel between adjacent separating aluminum plates for the neutron beam to pass through. The detector is configured in a one-to-one correspondence with the channel. Experimental verification shows that this configuration can optimize the neutron signal and reduce stray background signals, thereby ensuring the accuracy of experimental results. By setting the separating aluminum plates, on the one hand, the channel formed between adjacent separating aluminum plates can guide the neutron beam to perform diffraction measurements in a predetermined direction, enabling precise experiments on the internal structure of materials; on the other hand, the separating aluminum plates can effectively block the radiation of the neutron beam, thereby protecting the measuring equipment from damage. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the neutron diffraction multi-channel collimation device provided in this embodiment of the present invention;

[0027] Figure 2 yes Figure 1 A schematic diagram of a partial structure;

[0028] Figure 3 yes Figure 2 A magnified view of a portion at point A;

[0029] Figure 4 This is a schematic diagram of the structure of the partition aluminum plate provided in this embodiment of the utility model;

[0030] Figure 5 yes Figure 4 A magnified view of the area at point B;

[0031] Figure 6 This is a schematic diagram of the side plate provided in an embodiment of the present utility model.

[0032] Figure label:

[0033] 100, Base; 1001, Mounting cavity; 110, Base plate; 120, Side plate; 121, Slot; 122, Second positioning hole; 123, Mounting groove; 130, Top plate;

[0034] 200, Aluminum partition plate; 2001, Channel; 201, Insertion protrusion; 202, Limiting groove. Detailed Implementation

[0035] Before explaining any embodiment of the present invention in detail, it should be understood that the present invention is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0036] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0037] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0038] In this invention, the terms "connection," "combination," "coupling," and "installation" can 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 need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0039] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0040] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0041] In this utility model, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when one element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent the direct 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 rear.

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

[0043] The neutron diffraction multi-channel collimation device provided in this embodiment forms multiple channels 2001 for neutron beams to pass through by spaced aluminum plates 200 on the base 100. 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 experimental results. By setting the aluminum plates 200, on the one hand, the channel 2001 formed between two adjacent aluminum plates 200 can guide the neutron beam to perform diffraction measurements in a predetermined direction to achieve accurate experiments on the internal structure of materials. On the other hand, the aluminum plates 200 can effectively block the radiation of the neutron beam, thereby protecting the measurement equipment from damage.

[0044] It should be noted that the detector is a well-known device in the art, and the specific structure and working principle of the detector will not be 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°, creating two clearance spaces between them. Operators can use these clearance spaces for loading and unloading operations or for repairing malfunctioning experimental equipment. This embodiment does not limit the specific values ​​of the circular angles of the bases 100; designers can make adaptive adjustments based on actual experimental needs.

[0046] Optionally, the surface of the separating aluminum plate 200 is coated with a layer capable of absorbing neutron beams. When stray neutrons strike the separating aluminum plate 200, they can be absorbed by the coating. Only neutrons that can pass through channel 2001 can enter the detector, thereby achieving the absorption of stray neutron signals without blocking valid neutron signals. This further reduces experimental background and ensures the accuracy of experimental results. In this embodiment, the coating on the separating aluminum plate 200 is a boron-containing material.

[0047] like Figure 2As shown, the base 100 includes a base 110, side plates 120, and a top plate 130. The top plate 130 is located above the base 110, and the two are arranged parallel to each other and spaced apart. Multiple side plates 120 are erected at intervals along the circumference of the base 110 between the base 110 and the top plate 130. The mounting cavities 1001 are formed between adjacent side plates 120 and between the base 110 and the top plate 130. In this embodiment, each base 100 has 3 bases 110, 130s corresponding to the bases 110, and 9 side plates 120. The bases 110, side plates 120, and top plate 130 form 8 mounting cavities 1001. Each mounting cavity 1001 is provided with 25 partition aluminum plates 200, thereby forming 24 channels 2001 in each mounting cavity 1001. In this embodiment, by setting the base 100 as multiple separate bases 110, multiple top plates 130, and multiple side plates 120, the processing of each structure can be facilitated, the processing technology can be simplified, and the processing efficiency can be improved. Of course, this embodiment does not limit the specific number of bases 110, top plates 130, side plates 120, and dividing aluminum plates 200, and designers can make adaptive adjustments according to actual experimental needs.

[0048] Figure 3 It shows Figure 2 A magnified view of a portion at point A. (See image below.) Figure 3 and combined Figure 2 As shown, the base 110 is provided with a first positioning hole, and the side plate 120 is provided with a second positioning hole 122 corresponding to the first positioning hole. Positioning pins (not shown in the figure) are sequentially inserted into the first positioning hole and the second positioning hole 122. By setting the positioning pins, quick positioning and installation between the side plate 120 and the base 110 can be achieved.

[0049] Optionally, a first reinforcing member is provided at the corner position between the base 110 and the side plate 120. The first reinforcing member strengthens the structure and ensures that the base 110 and the side plate 120 are always connected at a 90° angle. In this embodiment, the first reinforcing member is made of square steel, which is simple in structure, easy to source, and reduces processing costs. The first reinforcing member is connected to the base 110 and the side plate 120 by fasteners, ensuring a stable connection between the first reinforcing member and the base 110, and between the first reinforcing member and the side plate 120.

[0050] Optionally, a second reinforcing member is provided between two adjacent side plates 120. The two ends of the second reinforcing member abut against the corresponding two side plates 120, thereby maintaining a preset distance between the two adjacent side plates 120. In this embodiment, the second reinforcing member is a cylindrical structure and is connected to the side plate 120 by fasteners. The structure is simple, easy to install, and the connection is stable. Through the cooperation between the first and second reinforcing members, the structural stability of the entire base 100 can be achieved.

[0051] Figure 4 A schematic diagram of the structure of the separator aluminum plate 200 provided in this embodiment is shown. Figure 5 It shows Figure 4 A magnified view of a section at point B. Figure 6 A structural schematic diagram of the side plate 120 provided in this embodiment is shown. (See attached diagram.) Figures 4-6 and combined Figure 3 As shown, each mounting cavity 1001 has two opposing cavity walls with slots 121 corresponding to the partition aluminum plates 200 inside. Each side of the partition aluminum plate 200 has a connecting protrusion 201 that can be inserted into the corresponding slot 121. By providing the interlocking protrusions 201 and slots 121, the installation of the partition aluminum plate 200 on the base 100 is facilitated. The operator only needs to align the connecting protrusion 201 on the partition aluminum plate 200 with the corresponding slot 121 on the base 100 and insert it. This is convenient and allows for quick installation of the partition aluminum plate 200 on the base 100. The slots 121 are located on the side plate 120.

[0052] Optionally, each side of the partition aluminum plate 200 along its width direction is provided with a plurality of insertion protrusions 201 arranged at intervals along its length direction. The plurality of insertion protrusions 201 are simultaneously inserted 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 to prevent a single insertion protrusion 201 from breaking due to excessive force, which would affect the experimental process.

[0053] It needs to be explained that, such as Figure 4 and combined Figure 1 As shown, the length direction of the separating aluminum plate 200 is parallel to the radial direction of the ring formed by the two bases 100, and the width direction of the separating aluminum plate 200 is perpendicular to the radial direction of the ring formed by the two bases 100.

[0054] like Figures 3-6 As shown, each aluminum partition plate 200 is also provided with a corresponding tensioning assembly. The tensioning assembly (not shown in the figure) includes a limiting member and a locking member. The limiting member includes a connected insertion part and a connecting part. A limiting groove 202 is provided on the aluminum partition plate 200 corresponding to the insertion part, and the insertion part can be limited in the limiting groove 202. The locking member can lock the connecting part onto the base 100. By providing the tensioning assembly, the stable installation of the aluminum partition plate 200 on the base 100 can be ensured, and deformation during use can be avoided. At the same time, the tensioning assembly can also enhance the structural strength of the aluminum partition plate 200. In this embodiment, the locking member is a locking screw. The locking screw can pass through the connecting part and be screwed onto the base 100. The threaded connection has the advantages of simple structure, tight connection and convenient disassembly and assembly.

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

[0056] Optionally, each of the two sides of the partition aluminum plate 200 is provided with at least two tensioning components, and the at least two tensioning components on each side are arranged at intervals along the length of the partition aluminum plate 200. This design can further ensure the tensioning effect of the tensioning components on the partition aluminum plate 200, and multiple tensioning components can tighten the partition aluminum plate 200 in the width direction, further preventing deformation. In this embodiment, the specific number of tensioning components corresponding to the two sides of each partition aluminum plate 200 is not limited, and designers can make adaptive adjustments according to actual installation requirements.

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

[0058] like Figure 5 As shown, in this embodiment, the limiting groove 202 is a T-shaped groove, and the shape of the insertion part is T-shaped. The limiting groove 202 is adapted to the insertion part to prevent the insertion part from coming out of the limiting groove 202 during the experiment, which would affect the accuracy of the experimental results.

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

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

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

2. The neutron diffraction multi-channel collimation device of claim 1, wherein, The surface of the separating aluminum plate (200) is coated with a coating that can absorb neutron beams.

3. The neutron diffraction multi-channel collimation device of claim 1, wherein, Each of the mounting cavities (1001) has two opposing cavity walls with slots (121) corresponding to the partition aluminum plates (200) inside. Each of the partition aluminum plates (200) has a plug-in protrusion (201) on both sides, and the plug-in protrusion (201) can be plugged into the slot (121) on the corresponding side.

4. The neutron diffraction multi-channel collimation device of claim 3, wherein, The partition aluminum plate (200) is provided with a plurality of insertion protrusions (201) arranged at intervals along its length on each side along its width direction.

5. The neutron diffraction multi-channel collimation device of claim 1, wherein, Each of the partition aluminum plates (200) is also provided with a corresponding tensioning assembly, the tensioning assembly comprising: The limiting member includes a plug-in part and a connecting part connected together. A limiting groove (202) is provided on the separating aluminum plate (200) corresponding to the plug-in part. The plug-in part can be limited to the limiting groove (202). A locking element that can lock the connecting part onto the base (100).

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

7. The neutron diffraction multi-channel collimation device of claim 1, wherein, The dividing aluminum plate (200) is set 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), side plates (120) and a top plate (130). The top plate (130) is located above the base (110) and the two are arranged parallel to each other. A plurality of side plates (120) are arranged at intervals along the circumference of the base (110) between the base (110) and the top plate (130). The mounting cavity (1001) is formed between two adjacent side plates (120) and between the base (110) and the top plate (130).

9. The neutron diffraction multi-channel collimation device of claim 8, wherein, The base (110) is provided with a first positioning hole, and the side plate (120) is provided with a second positioning hole (122) corresponding to the first positioning hole. The positioning pin is sequentially inserted into the first positioning hole and the second positioning hole (122).

10. The neutron diffraction multi-channel collimation device of claim 8, wherein, A first reinforcing member is provided at the corner position between the base (110) and the side plate (120); And / or, a second reinforcing member is provided between two adjacent side plates (120).

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