WO2019135584A1

WO2019135584A1 - Image generation booth for neutron imaging system and neutron imaging system capable of replacing scintillator according to neutron energy size

Info

Publication number: WO2019135584A1
Application number: PCT/KR2019/000003
Authority: WO
Inventors: 이영석; 곽종구
Original assignee: 한국기초과학지원연구원
Priority date: 2018-01-02
Filing date: 2019-01-02
Publication date: 2019-07-11
Also published as: CN111587386B; KR20190082458A; KR102019690B1; CN111587386A

Abstract

An image generation booth for a neutron imaging system is disclosed. The image generation booth for a neutron imaging system comprises: a shielding member including a shielded space and a socket portion for allowing visible light to enter the shielding space; a reflection mirror accommodated in the shielded space and converting a traveling direction of the visible light incident on the shielded space toward an image sensor positioned on one side of the shielded space; and a scintillator replacement member including an annular adapter portion connected to the socket portion and at least two scintillator portions each having a scintillator rotatably connected to the periphery of the adapter portion and facing the shielded space when closed toward the adapter portion, wherein the respective scintillators provided in the at least two scintillator portions are different scintillators for converting each of neutrons into the visible light so as to oppose a neutron beam source that emits two or more neutrons of different energy bands.

Description

Image generation booth for neutron imaging system and neutron imaging system that can replace scintillator according to neutron energy size

The present invention relates to an image generation booth for a neutron imaging system capable of being carried and installed, and a neutron imaging system capable of replacing a scintillator according to the neutron energy size.

Neutrons can be classified into three types: thermal neutrons with energy ranges between 0.005 eV and 0.5 eV, epithermal neutrons with energy ranges between 1 eV and 10 keV, fast neutrons with energy above 0.5 MeV fast neutron).

Neutron scintillators are used to obtain images from each type of neutron according to this energy magnitude. The neutron scintillator can be made using various elements, but it can be used efficiently when the gamma coefficient emitted after neutron incident is over 30000. The neutron scintillator has various types and shapes such as liquid, solid (organic material, inorganic material), and gas type. These neutron scintillators are configured to react appropriately to the type of neutrons depending on the ratio of reactants reacting with neutrons.

Therefore, in order to generate a high-resolution image from neutrons, a suitable scintillator should be arranged opposite to the neutron according to the neutron energy size.

However, since the conventional neutron imaging apparatus has only one scintillator, it is impossible to obtain a high resolution image from neutrons according to the energy level.

On the other hand, since most of the conventional neutron imaging apparatuses are manufactured at a large and high price, it is costly to construct a neutron imaging apparatus, and the neutron imaging apparatus can be used only at a predetermined place.

Accordingly, an object of the present invention is to provide an image generation booth for a neutron imaging system capable of being installed in a mobile place, capable of constructing a neutron imaging system in various places, and capable of generating images corresponding to broadband energy neutrons .

In addition, since the scintillator can be replaced according to the neutron energy size, it is possible to quickly and simply replace and place the scintillator in a single standard neutron imaging system with scintillators suitable for the neutron energy size, so that neutron imaging corresponding to the broadband energy neutrons System. &Lt; / RTI >

According to an aspect of the present invention, there is provided an image generating booth for a neutron imaging system, including: a shielding member including a shielding space and a socket for receiving visible light into the shielded space; A reflection mirror accommodated in the shielded space and converting the traveling direction of the visible light incident on the shielded space toward the image sensor positioned on one side of the shielded space; And a scintillator portion including at least two scintillator portions including an annular adapter portion connected to the socket portion and a scintillator rotatably connected to the adapter portion and facing the shielding portion when the adapter portion is closed toward the adapter portion, Wherein each of the at least two scintillators comprises at least two scintillators, each scintillator having at least two scintillators, each of the at least two scintillators having at least two neutrons, And is another scintillator.

In one embodiment, the adapter portion has a quadrangular annular shape, and the scintillator portion includes three rectangular annular scintillator mounting members rotatably connected to three rectangular annular rings of the adapter portion; And three scintillators received inside the square annular shape of each of the scintillator mounting members.

In one embodiment, the shielding member is provided in the form of a rectangular box, and the rectangular box is rotatably connected to each other so that the respective surfaces can be rotated and folded with respect to each other to overlap each other.

In one embodiment, the shielding member comprises: a flat plate; A bottom plate facing the flat plate; A first side plate rotatably connected between the flat plate and the bottom plate, the first side plate including a first fold extending in the transverse direction; A second side plate rotatably connected between the flat plate and the bottom plate so as to face the first side plate and including a second fold extending in the transverse direction; A front plate rotatably connected to any one of the flat plate and the bottom plate so as to be perpendicular to the first side plate and the second side plate, the front plate positioned inside the first side plate and the second side plate; And a rear plate rotatably connected to the other one of the flat plate and the bottom plate so as to face the front plate and positioned inside the first side plate and the second side plate, When the first side plate is separated from the first side plate and the second side plate, the first side plate is folded with respect to the first fold, and the second side plate is folded with respect to the second fold.

In one embodiment, at least one of the front plate and the back plate includes a supporting portion for supporting the unfolded state of the first side plate and the second side plate by being in contact with the inner side surfaces of the first side plate and the second side plate can do.

According to an embodiment of the present invention, there is provided a neutron imaging system capable of replacing a scintillator according to a neutron energy size, the neutron imaging system including a neutron source emitting energy of at least two or more bands; An image generation booth disposed opposite the neutrons emitted from the neutron source and converting the neutron into visible light to generate an image; And an image sensor installed at one side of the image generating booth and receiving the visible light to generate an image, wherein the image generating booth includes a shielding space and a socket portion for making visible light incident on the shielding space Shielding member; A reflection mirror accommodated in the shielded space and converting the traveling direction of the visible light incident on the shielded space toward the image sensor positioned on one side of the shielded space; And a scintillator portion including at least two scintillator portions including an annular adapter portion connected to the socket portion and a scintillator rotatably connected to the adapter portion and facing the shielding portion when the adapter portion is closed toward the adapter portion, Wherein each of the at least two scintillators comprises at least two scintillators, each scintillator having at least two scintillators, each of the at least two scintillators having at least two neutrons, And is another scintillator.

According to the image generating booth for a neutron imaging system according to the present invention, it is possible to install the neutron imaging system in various places, and it is advantageous in that an image can be generated in response to a broadband energy neutron.

In addition, according to the neutron imaging system using the image generation booth, since the scintillator can be replaced and arranged according to the neutron energy size, it is possible to quickly and simply perform scintillators suitable for the neutron energy size in one standard neutron imaging system Thereby providing a neutron imaging system corresponding to the broadband energy neutron.

1 is a perspective view illustrating an image generating booth for a neutron imaging system according to an embodiment of the present invention.

2 is a perspective view for explaining another embodiment of the shielding member shown in Fig.

FIG. 3 is a perspective view showing a support portion provided on the front plate and the back plate of the shield member shown in FIG. 2. FIG.

4 is a side view of the shielding member shown in Fig.

5 is a perspective view showing a state in which the shielding member shown in FIG. 2 is folded.

FIG. 6 is a block diagram conceptually showing the configuration and arrangement of a neutron imaging system according to an embodiment of the present invention.

Hereinafter, an image generating booth for a neutron imaging system according to an embodiment of the present invention and a neutron imaging system capable of replacing a scintillator according to a neutron energy magnitude using the booth will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The present invention relates to a generation booth for a neutron imaging system that is capable of producing images from neutrons of each energy band emitted from a neutron source emitting two or more neutrons of different bands of energy. The neutron source is one that emits two or more of a thermal neutron having an energy range between 0.005 eV and 0.5 eV, an out-of-neutron having an energy range between 1 eV and 10 keV, and a fast neutron having an energy above 0.5 MeV .

1 is a perspective view illustrating a configuration of an image generating booth for a neutron imaging system according to an embodiment of the present invention.

Referring to FIG. 1, an image generation booth for a neutron imaging system according to an embodiment of the present invention includes a shield member 110, a reflection mirror 120, and a scintillator replacement member 130.

The shielding member 110 shields the neutron beam other than the visible light generated by converting the beam within a range of the emission range of the neutron beam emitted from the neutron beam source to receive only the visible light. The shielding member 110 includes a shielding space 110a and a socket portion 110b for receiving visible light into the shielding space 110a. For example, the shielding member 110 may be formed in a box shape, and the inside of the box may be a shielding space 110a. The socket portion 110b is provided to open one side of the shielding space 110a to allow the visible light to enter and to connect the scintillator replacement member 130 to the shielding member 110. [ For example, the socket portion 110b may have a rectangular ring shape. An image sensor 300 for generating an image may be provided on one side of the shielding member 110, that is, on a side surface perpendicular to the surface on which the socket portion 110b is located.

The reflective mirror 120 is accommodated in the shielding space 110a and switches the traveling direction of the visible light incident on the shielding space 110a toward the image sensor 300. [

The scintillator replacement member 130 is made up of a combination of different scintillators responding to the neutron energy of each band emitted from the neutron beam source. The scintillator replacement member 130 includes an adapter unit 131 and at least two scintillator units 132.

The adapter unit 131 is connected to the socket unit 110b to connect the scintillator replacement member 130 to the shielding member 110. [ For example, the adapter portion 131 may have a rectangular ring shape, and the size of the adapter portion 131 may be large enough to accommodate the socket portion 110b. There is no particular limitation on the form in which the adapter unit 131 is connected to the socket unit 110b. For example, one of the groove and the protrusion may be formed around the adapter unit 131 and the socket unit 110b And can be coupled and separated in a one-touch manner.

The scintillator unit 132 may include at least two scintillators 1321 for converting neutrons of at least two or more energy bands emitted from the neutron source into visible rays. The at least two scintillators 1321 are different scintillators that convert each neutron to the visible light beam to a neutron source emitting two or more neutrons of different band energy.

For example, the scintillator portion 132 includes three square-ring-shaped scintillator mounting members 1322 rotatably connected to three square-ring-shaped sides of the adapter portion 131, And three scintillators 1321 accommodated inside the square annular shape of the mounting member 1322. [ In this case, one of the three scintillators 1321 may be a kind that converts thermal neutrons to visible light, and the other may be a kind that converts external neutrons to visible light, and the other may be a type that converts high- It can be a kind that converts into a ray.

When the respective scintillator portions 132 of the scintillator replacement member 130 are closed toward the adapter portion 131, the scintillator 1321 provided in each of the scintillator portions 132 is moved in the shielding space 110a ). Accordingly, the respective scintillator units 132 are rotated toward the adapter unit 131 according to the neutron energy emitted from the neutron beam source 200, and the scintillator units 132 provided in the respective scintillator units 132 1321 to be opposed to neutrons so that each scintillator 1321 can replace the scintillator 1321 according to the neutron energy so as to convert each neutron into a visible light.

The image generating booth for a neutron imaging system according to an embodiment of the present invention includes an adapter for connecting the adapter portion 131 of the scintillator replacement member 130 to the socket portion 110b of the shielding member 110 The scintillator replacement member 130 and the shield member 110 can be engaged and disengaged. Therefore, it is easy to carry.

Meanwhile, the image generating booth for a neutron imaging system according to an embodiment of the present invention may be configured such that the shielding member 110 is foldable so that it is easier to carry.

That is, the shielding member 110 may be configured such that each side of the rectangular box is rotatably connected to each other so that the sides thereof are rotated and folded with respect to each other so as to overlap with each other. The shielding member 110 includes a flat plate 111 rotatably connected to each other, a bottom plate 112, a first side plate 113, a second side plate 114, a front plate 115, Plate 116 as shown in FIG.

The flat plate 111 constitutes a plane of the shielding member 110 and the bottom plate 112 forms a bottom surface of the shielding member 110 opposite to the flat plate 111.

The first side plate 113 constitutes one side surface of the shielding member 110 and is rotatably connected between the flat plate 111 and the bottom plate 112, And a portion 113a. The first fold 113a is a boundary for folding the first side plate 113. The first side plate 113 is divided into two first sub-plates 113b, One side of the plate 113b is a part hinged to each other. Accordingly, the first side plate 113 can be folded on the basis of the first folding portion 113a by rotating the first sub-folding plates 113b so as to overlap with each other.

The second side plate 114 constitutes another side surface of the shielding member 110 and is rotatably connected between the flat plate 111 and the bottom plate 112, And includes a folding portion 114a. The second folding portion 114a is a boundary for folding the second side plate 114. The second side plate 114 is divided into two second sub-plate portions 114b, One side of the plate 114b is a part hinged to each other. Accordingly, the second side plate 114 can be folded on the basis of the second folding portion 114a by rotating the second sub-folding plates 114b so as to overlap with each other.

The front plate 115 constitutes the front surface of the shielding member 110 and is disposed between the first and

second side plates

113 and 114 so as to be perpendicular to the first and

second side plates

113 and 114, And may be rotatably connected to any one of them. For example, the front plate 115 may be rotatably connected to the flat plate 111. At this time, the front plate 115 may be positioned inside the first side plate 113 and the second side plate 114. The socket portion 110b may be positioned on the lower surface of the front plate 115.

The back plate 116 constitutes the back surface of the shielding member 110 and may be rotatably connected to the other one of the flat plate 111 and the bottom plate 112 so as to face the front plate 115. For example, the back plate 116 may be rotatably connected to the bottom plate 112. At this time, the back plate 116 may be located inside the first side plate 113 and the second side plate 114.

At least one of the front plate 115 and the back plate 116 may include a support portion 117. For example, each of the front plate 115 and the back plate 116 may include the support portion 117. In this case, each supporting portion 117 may be provided so as to protrude from two longitudinal sides of both the front plate 115 and the back plate 116. Each of the support portions 117 is in contact with the inner surface of the first side plate 113 and the second side plate 114 to be in a deployed state of the first side plate 113 and the second side plate 114 Can support.

Hereinafter, a process of folding the shielding member 110 of the folding structure and a process of opening the shielding member 110 in the form of a box will be described.

When the front plate 115 is rotated in the direction of the flat plate 111 and the rear plate 116 is rotated in the direction of the bottom plate 112 in order to collapse the shielding member 110 extending in a box shape, The front plate 115 and the back plate 116 are spaced apart from the first side plate 113 and the second side plate 114. [ At this time, in the front plate 115 and the back plate 116, the supporting portions 117, which are in contact with the inner side surfaces of the first side plate 113 and the second side plate 114, (113) and the second side plate (114).

When the front plate 115 and the back plate 116 are rotated to be separated from the first side plate 113 and the second side plate 114, the first side plate 113 and the second side plate 114, The first side plates 113 are positioned such that the first side plates 113b are spaced apart from each other by the first side plates 113b and the first side plates 113b, And the second side plate 114 rotates so that the second sub-bottom plates 114b are overlapped with each other, and the second side plate 114a is rotated by the second folding unit 114a ). At this time, the first side plate 113 and the second side plate 114 are rotated and folded inward of the flat plate 111 and the bottom plate 112.

When the first side plate 113 and the second side plate 114 are folded as described above, the first side plate 113 and the second side plate 114 are stacked on the

bottom plate

112, 111 are overlapped on the first side plate 113 and the second side plate 114 in a folded state. In this state, the front plate 115 overlaps the flat plate 111, and the back plate 116 is disposed on the opposite side of the bottom plate 112, that is, the first side plate 113 and the second side plate 114 Is overlapped with the flat surface as shown in FIG. 5 on the opposite surface of the overlapped surface. Therefore, the shielding member 110 can be easily carried.

The rear plate 116 is first separated from the bottom plate 112 so that the back plate 116 and the bottom plate 112 are placed on the ground when the cover member 110 is to be unfolded again for use. The first side plate 113 is rotated about the first folding portion 113a with the front plate 115 and the flat plate 111 held by the front plate 115, And the second side plate 114 is rotated and opened with respect to the second folding portion 114a.

In this state, the front plate 115 and the rear plate 116 are rotated toward the first side plate 113 and the second side plate 114. For example, first, the back plate 116 is rotated toward the first side plate 113 and the second side plate 114 so that the support portions 117 on both sides of the back plate 116 are rotated in the direction of the first side plate 113, And then the front plate 115 is rotated toward the first side plate 113 and the second side plate 114 so as to be inserted into the inner side of the first side plate 114 and the second side plate 114, (117) are inserted into the first side plate (113) and the second side plate (114). The supporting portions 117 of the front plate 115 and the rear plate 116 are respectively fitted to the inner side surfaces of the first side plate 113 and the second side plate 114 to form the first side plate 113, And supports the flat plate 111 in the unfolded state of the second side plate 114. Accordingly, the shielding member 110 is kept in a deployed state in the form of a box.

The adapter unit 131 of the scintillator replacement member 130 is coupled to the socket unit 110b of the shielding member 110 while the shielding member 110 is opened in a box shape to convert the neutron into visible light, &Lt; / RTI >

The use of the image generating booth for a neutron imaging system according to an embodiment of the present invention makes it possible to construct a neutron imaging system in various places where a neutron beam source is located by carrying it easily and to carry out a large and expensive neutron imaging system It is possible to implement a neutron imaging system capable of replacing and installing the neutron imaging system, and it is possible to generate an image corresponding to a broadband energy neutron.

6, an image generating booth for a neutron imaging system according to an embodiment of the present invention can be used in a neutron imaging system. In the neutron imaging system using the image generating booth, An image generation booth 100, and an image sensor 300. [0033] FIG. 6 is a block diagram conceptually showing the configuration and arrangement of a neutron imaging system according to an embodiment of the present invention.

As described above, the neutron beam source 200 may emit two or more of thermal neutrons, non-neutron neutrons, and fast neutrons.

The image generating booth 100 may be disposed opposite to the neutrons emitted from the neutron beam source 200 to convert the neutrons into visible rays to generate an image.

The image sensor 300 may be installed at one side of the image generation booth 100 as described above, and may receive visible light to generate an image. For example, the image sensor 300 may be a CCD sensor and may be connected to a display device that outputs an image.

The neutron beam source 200 emits neutrons toward the subject 10 in order to generate an image from the neutron-transmitted subject 10 using the neutron imaging system according to an embodiment of the present invention, The generating booth 100 converts the neutrons transmitted through the inspected object 10 into visible light and advances the converted visible light toward the image sensor 300. The image sensor 300 receives the visible light to generate an image .

The scintillator replacement member 130 of the image generating booth 100 rotates each of the scintillator units 132 toward the adapter unit 131 according to the neutron energy emitted from the neutron beam source 200 The scintillators 1321 provided in the respective scintillator units 132 are opposed to the neutrons so that the respective scintillators 1321 can convert the respective neutrons into visible rays.

The neutron imaging system according to an embodiment of the present invention has a structure capable of replacing and disposing the scintillator according to the neutron energy size. Therefore, in one standard neutron imaging system, it is possible to quickly and simply make scintillators suitable for the neutron energy size So that a neutron imaging system corresponding to the broadband energy neutron can be provided.

In addition, since an object image can be generated by quickly replacing and disposing with scintillators suitable for the neutron energy size, there is an advantage that a high-resolution image of a subject can be obtained from the energy neutrons of each band.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

Claims

A shielding member 110 including a shielding space 110a and a socket portion 110b for receiving visible light into the shielding space 110a;

A reflection mirror 120 accommodated in the shielding space 110a and switching the traveling direction of the visible light incident on the shielding space 110a toward the image sensor 300 located at one side of the shielding space 110a, ; And

An annular adapter portion 131 connected to the socket portion 110b is rotatably connected to the adapter portion 131 and faces the shielding space 110a when the adapter portion 131 is closed toward the adapter portion 131. [ And a scintillator replacement member 130 including at least two scintillator portions 132 having scintillators 1321,

Each of the at least two scintillators 132 may include a plurality of different scintillators 132 that are disposed in a plurality of different scintillators 132 that are opposed to a neutron source emitting two or more neutrons of different energy bands, &Lt; / RTI >

Image creation booth for neutron imaging system.
The method according to claim 1,

The adapter unit 131 has a rectangular ring shape,

The scintillator unit 132 includes:

Three rectangular annular scintillator mounting members 1322 rotatably connected to three sides of the square annular shape of the adapter unit 131; And

And three scintillators (1321) accommodated inside a square annulus of each of the scintillator mounting members (1322).

Image creation booth for neutron imaging system.
The method according to claim 1,

The shielding member 110 is provided in a rectangular box shape,

Characterized in that said rectangular box is rotatably folded with respect to each other such that the respective surfaces are rotatably connected to each other and the respective surfaces are overlapped with each other,

Image creation booth for neutron imaging system.
The method of claim 3,

The shielding member (110)

A flat plate 111;

A bottom plate 112 facing the flat plate 111;

A first side plate 113 rotatably connected between the flat plate 111 and the bottom plate 112 and including a first fold 113a extending in the transverse direction;

And a second side portion 114a which is rotatably connected between the flat plate 111 and the bottom plate 112 so as to face the first side plate 113 and includes a second folding portion 114a extending in the transverse direction, Plate 114;

The first side plate 113 and the second side plate 114 are rotatably connected to any one of the flat plate 111 and the bottom plate 112 so as to be perpendicular to the first side plate 113 and the second side plate 114, A front plate 115 located inside the second side plate 114; And

The first side plate 113 and the second side plate 114 are rotatably connected to the other one of the flat plate 111 and the bottom plate 112 so as to face the front plate 115, And a back plate (116)

When the front plate 115 and the rear plate 116 are separated from the first side plate 113 and the second side plate 114, the first side plate 113 113 are folded and the second side plate (114) is folded with respect to the second folding section (114a).

Image creation booth for neutron imaging system.
5. The method of claim 4,

At least one of the front plate 115 and the rear plate 116 is placed on the inner side surfaces of the first side plate 113 and the second side plate 114, And a support portion (117) for supporting an unfolded state of the plate (114).

Image creation booth for neutron imaging system.
A neutron source 200 for emitting neutrons of energy in at least two or more bands;

An image generating booth (100) disposed opposite the neutrons emitted from the neutron beam source (200), for converting the neutrons into visible light to generate an image; And

And an image sensor (300) installed at one side of the image generating booth (100) and receiving the visible light to generate an image,

The image generation booth 100 includes:

A shielding member 110 including a shielding space 110a and a socket portion 110b for receiving visible light into the shielding space 110a;

A reflection mirror 120 accommodated in the shielding space 110a and switching the traveling direction of the visible light incident on the shielding space 110a toward the image sensor 300 located at one side of the shielding space 110a, ; And

An annular adapter portion 131 connected to the socket portion 110b is rotatably connected to the adapter portion 131 and faces the shielding space 110a when the adapter portion 131 is closed toward the adapter portion 131. [ And a scintillator replacement member 130 including at least two scintillator portions 132 having scintillators 1321,

Each of the at least two scintillators 132 may include a plurality of different scintillators 132 that are disposed in a plurality of different scintillators 132 that are opposed to a neutron source emitting two or more neutrons of different energy bands, &Lt; / RTI >

Neutron imaging system that can replace scintillator according to neutron energy size.
The method according to claim 6,

The adapter unit 131 has a rectangular ring shape,

The scintillator unit 132 includes:

Three rectangular annular scintillator mounting members 1322 rotatably connected to three sides of the square annular shape of the adapter unit 131; And

And three scintillators (1321) accommodated inside a square annulus of each of the scintillator mounting members (1322).

Image creation booth for neutron imaging system.