KR102075467B1 - A target device having a radiation generating target and radiation source system having the same - Google Patents

Abstract

The present invention relates to a target device, and a radiation source system including the target device. The target device comprises: a housing having an open end and a vacuum chamber formed therein; an inner case having a cylindrical shape, installed inside the housing, and having an electron beam insertion hole formed at a front surface portion thereof to allow an electron beam to be incident toward the housing; a cover plate fixedly installed to the housing to cover the open end of the housing; a driving unit including a rotary shaft installed to penetrate the cover plate and the inner case respectively, and a motor for rotating the rotary shaft; and a radiation-generating target coupled to the rotary shaft to be rotated in one direction, and forming radiation having different energy by colliding with the incident electron beam.

Description

A target device having a radiation generating target and a radiation source system having the same {A TARGET DEVICE HAVING A RADIATION GENERATING TARGET AND RADIATION SOURCE SYSTEM HAVING THE SAME}

The present invention relates to a target device capable of generating different types of radiation having different energies.

The radiation source system is a device for generating radiation, and after accelerating the electron beam generated in the electron gun in the electron accelerator, and then bombard the accelerated electron beam to the target device to generate radiation from the target device. At this time, the target device serves to generate radiation by being irradiated with the electron beam E accelerated by the electron accelerator while maintaining a high vacuum state.

In general, a radiation generating apparatus can generate only one type of radiation in one apparatus, and in order to generate various kinds of radiations, there must be as many radiation generating apparatuses as there are types of radiations, and a target apparatus needs as many kinds of radiations as desired. Done. In this case, the construction cost of the radiation generating device is additionally required, and there is a problem in that the installation and operation costs of the shielding and other auxiliary equipment are increased.

For example, Republic of Korea Patent Publication No. 10-1304104 (registered August 29, 2013) discloses a cargo retrieval device as an example of a non-destructive inspection device. The cargo inspection device enables quick inspection of cargo and postal items at ports or airports, and irradiates the containers loaded with import and export cargo and reads the images obtained from them to check whether unauthorized items or dangerous goods are loaded inside the containers. Can be inspected.

The cargo search system uses X-ray and neutron beam at the same time, and the radiation source system is that X-ray or neutron generator is separated from each other, and X-ray and neutron generator generated from X-ray generator It is configured to irradiate the neutral to each of the generated test object.

In this case, since the radiation source system and the detection system must be manufactured separately from each other, there is a problem in that the manufacturing cost increases, and after the two types of radiation are irradiated to the test object, the image information of the test object must be obtained from the transmitted radiation, respectively. There is a problem that the system must be enlarged.

Therefore, there is a need for a device that can easily generate radiation of different energy through one radiation source system.

One object of the present invention is to propose a structure of a target device capable of generating various types of radiation having different energies in one equipment.

Another object of the present invention is to provide a structure of a radiation source system including an electron gun, an electron accelerator, and a target device.

Another object of the present invention is to provide a radiation source system capable of miniaturizing and reducing the weight of a device by integrating a separate device into a single device in order to generate several types of radiation having different energy. .

Another object of the present invention is to provide a non-destructive inspection system capable of acquiring image information transmitted through an inspection object after irradiating the inspection object with radiation generated from the radiation source system.

In order to achieve the above object, the target device according to the present invention, the one end is opened, the housing in which a vacuum chamber is formed; An inner case formed in a cylindrical shape and installed inside the housing and having an electron beam injection hole formed in a front portion thereof so that the electron beam is incident toward the housing; A cover plate fixed to the housing so as to cover the opened end of the housing; A driving unit including a rotating shaft installed to penetrate the cover plate and the inner case, respectively, and a motor for rotating the rotating shaft; And a radiation generating target coupled to the rotation axis to rotate in one direction and colliding with the incident electron beam to form radiation having different energies.

According to an embodiment related to the present invention, a radiation hole is formed at a position overlapping the electron beam injection hole in the cover plate, and the radiation generated from the radiation generation target may pass through the radiation hole. have.

According to an embodiment related to the present invention, a radiation generating target includes: a rotation shaft support configured to support the rotation shaft; And a plurality of targets spaced apart from the rotary shaft support part by a predetermined distance along a circumferential outer side of the rotary shaft support part.

According to an embodiment related to the present invention, a radiation generating target includes at least one target for generating different types of radiation on a plate partitioned into a plurality of regions in each region of the plate, and the driving unit includes the rotating shaft. It may be configured to determine a target to which the electron beam is irradiated while being connected to the radiation generating target through the rotating target.

According to an embodiment related to the present invention, each target is made of a different material and may be made to generate radiation with different energy as the electron beam passes.

According to an embodiment related to the present invention, the radiation generation target generates radiation having different energies by each target disposed to overlap on the traveling path of the electron beam while rotating at a predetermined rotational speed together with the rotation axis. It can be made to.

According to an embodiment related to the present invention, a vacuum port may be installed at one side of the housing such that the inside of the housing is in a vacuum state.

According to an embodiment related to the present invention, the driving unit may provide a driving force to the rotating shaft so that the position and rotation angle of the radiation generating target is changed.

According to an embodiment related to the present invention, the driving unit may be configured to include a bevel gear connected to the motor at one end and the other end to the rotation shaft to transmit the rotational force formed from the motor to the rotation shaft. .

According to an embodiment related to the present invention, the motor may be installed in a direction crossing the direction in which the rotation shaft extends, and may be positioned to be spaced apart from the irradiation hole.

In addition, to achieve the above object, the radiation source system according to the present invention, an electron gun for generating an electron beam; An electron accelerator connected to the electron gun and configured to accelerate the electron beam generated by the electron gun; And a target device connected to the electron accelerator and configured to generate radiation by receiving the electron beam accelerated by the electron accelerator, the target device comprising: a housing having one end opened and a vacuum chamber formed therein; An inner case formed in a cylindrical shape protruding toward the vacuum chamber and installed inside the housing, and having an electron beam injection hole formed in a front portion thereof so that the electron beam is incident toward the housing; A cover plate fixed to the housing so as to cover the opened end of the housing; A driving unit having a rotating shaft installed to penetrate the cover plate and the inner case and a motor for rotating the rotating shaft; And a radiation generating target coupled to the rotation axis and configured to rotate in one direction, and configured to form radiation having different energies as the incident electron beam passes.

According to an embodiment related to the present invention, it is further configured to include a control unit configured to synchronize the electron gun, the electron accelerator and the target device with each other, such that the position of the target of the target device is changed in accordance with the electron beam generation speed of the electron gun. Can be.

According to the present invention of the above configuration, by changing the position of the radiation generating target included in the target device, it is possible to selectively generate radiation having different energy in one device.

In addition, the radiation source system, including the electron gun, the electron accelerator and the target device, eliminates the need for a large number of devices to generate different types of radiation, reducing installation space and cost, and the hassle of operating the necessary equipment separately. Will solve the problem.

In addition, in order to generate various types of radiation having different energies, it is possible to integrate a conventionally composed of several devices into one device, and to reduce the size and weight of the radiation source system and the radiation generated using the same to the inspection object. Thereafter, a non-destructive inspection system capable of acquiring image information transmitted through the inspection object may be configured. Accordingly, the non-destructive inspection system having a compact structure can be used in various ways such as a security scanner for building a social safety net.

1 is a perspective view showing a state of a target device.
FIG. 2 is an exploded view of the target device of FIG. 1.
FIG. 3 is a cross-sectional view of the target device of FIG. 1 cut in the lateral direction. FIG.
4 is a perspective view showing a state of a radiation generating target.
5A and 5B are state diagrams showing the state when the radiation generation target is rotated in the clockwise direction, respectively.
6 is a conceptual diagram showing how the radiation generated when the electron beam collides with the target proceeds.
7 is a conceptual diagram showing a state of a radiation source system.
8 is a conceptual diagram showing a state of a container searcher which is a type of non-destructive inspection system according to the present invention.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or mixed in consideration of ease of specification, and do not have distinct meanings or roles. In addition, in the following description of the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easily understanding the embodiments disclosed in the present specification, the technical idea disclosed in the specification by the accompanying drawings are not limited, and all changes included in the spirit and scope of the present invention. It should be understood to include equivalents and substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprises" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

FIG. 1 is a perspective view showing a state of the target device 100, and FIG. 2 is an exploded view of the target device 100 of FIG. 1. 3 is a cross-sectional view illustrating an internal view of the target apparatus 100 by cutting the target apparatus 100 of FIG. 1 in a lateral direction.

The target device 100 is a component included in the radiation source system for generating various kinds of radiation. The target device 100 accelerates the electron beam E generated by the electron gun 210 (see FIG. 7) in the electron accelerator, and then generates radiation by colliding with the accelerated electron beam E. FIG.

The target device 100 may include a housing 110, an inner case 120, a cover plate 130, a driver 170, and a radiation generating target 140.

The housing 110 may have a cylindrical shape having one end opened, and may have a space having a predetermined size so that a vacuum chamber is formed therein. The housing 110 may be made of a metal material, for example, stainless steel.

Vacuum ports 111 and 112 may be installed at one side of the housing 110 such that the inside of the housing 110 is a vacuum.

The vacuum ports 111 and 112 are installed to penetrate the outside of the housing 110 and serve to remove the air contained in the housing 110 so that the inside of the housing 110 is in a vacuum state. As shown in FIG. 2, first and second vacuum ports 111 and 112 may be installed at both sides of the outer surface of the housing 110, and each vacuum port may vacuum the inside of the housing 110. It maintains a state and serves to form a vacuum chamber. When the inside of the housing 110 is in a vacuum state by the vacuum ports 111 and 112, the movement of the electron beam E incident toward the electron beam irradiation hole 113 formed on the outer front side of the housing 110 is prevented. Will not affect.

An electron beam irradiation hole 113 may be formed in the outer front portion (right side in FIGS. 1 and 3) of the housing 110, that is, along the direction in which the electron beam E is incident. The electron beam irradiation hole 113 may be formed in the shape of a hole having a constant diameter so that the electron beam E accelerated through the electron accelerator may be incident.

The inner case 120 has a cylindrical shape protruding toward the vacuum chamber and may be installed inside the housing 110. An electron beam injection hole 121 may be formed on the outer front portion (upward in FIG. 2) of the inner case 120 to overlap the electron beam irradiation hole 113. Since the electron beam injection hole 121 is formed at a position overlapping with the electron beam irradiation hole 113 of the housing 110, the electron beam E incident along the electron beam irradiation hole 113 is installed inside the housing 110. After passing through the electron beam injection hole 121 of the inner case 120, it will be able to collide with the radiation generating target 140 located between the inner case 120 and the cover plate 130. In addition, as shown in FIG. 2, a plurality of electron beam injection holes 121 may be formed on the outer front portion of the inner case 120. This is to reduce the material cost and weight, at least one electron beam injection hole 121 should be formed to overlap the electron beam irradiation hole 113 of the housing 110.

The cover plate 130 may be fixed to the housing 110 to cover the opened end of the housing 110. The cover plate 130 may be installed to fix the inner case 120 and one side thereof.

At this time, the first flange portion 114 and the second flange portion 122 protruding along the outer circumference of the opening surface of the inner case 120 to protrude along the outer circumference of the opening surface of the housing 110 is a cover. It may be made to be fixed by screwing the plate 130 and.

On one side of the cover plate 130, a radiation hole 131 through which radiation generated from the radiation generation target 140 may move may be formed.

The cover plate 130 may include a recessed surface 132 formed such that a surface facing the inner case 120 is recessed with a predetermined depth, and the irradiation hole 131 has the recessed surface ( 132 may be formed on one side.

As shown in FIG. 3, the rear shaft of the cover plate 130 may be provided with a rotation shaft support part 144 to limit the exposure of the rotation shaft 150 to the outside. In addition, as shown in Figure 2, between the rotary shaft support member 135 and the bevel gear 172 is provided with a vacuum feed through (160, feed through) is installed to surround the rotary shaft 150, the vacuum state It will be connected to the drive unit 170 made of a non-vacuum state with the housing 110.

The radiation hole 131 may be formed at a position overlapping with the electron beam injection hole 121, and serves to pass the radiation formed from the radiation generation target 140.

The driving unit 170 serves to form a driving force for forming a movement of the radiation generating target 140 located inside the housing 110, and is installed to penetrate the cover plate 130 and the inner case 120. The rotating shaft 150 and the motor 171 for rotating the rotating shaft 150 may be configured.

The driving unit 170 serves to provide a driving force to the rotating shaft 150 so that the position and rotation angle of the radiation generating target 140 are changed. The driving unit 170 is connected to the motor 171 at one end and the other end is connected to the rotation shaft 150, and a bevel gear 172 transmitting the rotational force generated from the motor 171 to the rotation shaft 150. ) May be included.

The connection joint 173 may be installed between the motor 171 and the bevel gear 172.

The bevel gear 172 serves to transfer motion between different axes. In the present invention, the bevel gear 172 is a direction in which the rotational force formed in the motor 171 intersects the direction in which the rotation shaft 150 extends. After receiving the rotational force from the rotary shaft 150 serves to transmit the rotational force. As shown in FIGS. 2 and 3, the bevel gear 172 is connected to the motor 171 through one shaft and is connected to the rotation shaft 150 through the other shaft.

The rotation shaft 150 extends in one direction and may be installed to pass through the center of the cover plate 130 and the radiation generation target 140. Specifically, as shown in FIG. 3, the rotating shaft 150 may be installed to pass through the rotating shaft penetrating portion 133 formed to protrude from the center of the cover plate 130 toward the radiation generating target 140. In addition, a radiation generation target 140 may be fixed to one side of the rotation shaft 150. Since a rotation shaft support part 144 is formed at the center of the radiation generating target 140 to support the outer circumferential surface of the rotation shaft 150, the rotation shaft 150 may be rotated in one direction together with the rotation shaft 150.

The motor 171 is for transmitting a rotational force through the shaft formed in the motor, it may be made of an AC servo motor. In the case of the present invention, the rotational force generated by the motor 171 may be transmitted to the radiation generating target 140 through the rotation axis 150, the motor 171 is a high speed of approximately 6000rpm or more of the radiation generating target 140 Since it must be rotated, the specification should be determined in consideration of this.

The motor 171 may be installed in a direction crossing the direction in which the rotation shaft 150 extends, and the motor 171 may be positioned to be spaced apart from the irradiation hole 131. The motor 171 may be installed to limit the overlapping of the radiation passing through the irradiation hole 131. This may affect the performance of the motor 171 when the radiation generated while the electron beam E incident through the electron beam irradiation hole 113 collides with the radiation generating target 140 and proceeds toward the motor 171. Because it becomes.

The radiation generating target 140 is installed inside the housing 110 and serves to generate radiation by colliding with the electron beam E. The electron beam E is irradiated while being rotated in connection with the rotating shaft 150. Depending on the target it will be possible to produce radiation with different energies. Detailed description of the radiation generating target 140 will be described later.

4 is a perspective view showing a state of the radiation generating target 140.

The radiation generation target 140 is coupled to the rotation axis 150 and configured to rotate in one direction, and serves to generate radiation having different energies as the electron beam E incident from the electron beam injection hole 121 passes. do.

The radiation generation target 140 may be positioned to be spaced apart from the front surface of the cover plate 130 by a predetermined distance.

As shown in FIG. 4, the radiation generating target 140 may be configured such that a plurality of different targets are installed on a plate having a triangular boomerang shape. At this time, the installation of each target, which specific material to configure each target will vary depending on the user's design. In the present specification, the radiation generating target 140 having a total of three targets has been described as an example, but this is only one example, and it may be possible to modify the shape of the plate, the number of targets, and the installation position of the target according to a user's demand. .

The radiation generating target 140 and the rotating shaft support portion 144 configured to support the rotating shaft 150. It may be configured to include a plurality of targets (141, 142, 143) are installed along a predetermined angle and distance with the rotary shaft support 144 along the outer peripheral portion of the rotary shaft support (144). The radiation generation target 140 may be rotated together with the rotation shaft 150 based on the rotation shaft support 144.

The radiation generating target 140 may be disposed on a plate partitioned into a plurality of regions, and at least one target for generating different kinds of radiation may be disposed in each region of the plate. At this time, each target (141, 142, 143) is formed in a position eccentric from the rotary shaft support (144).

The radiation generating target 140 may rotate at a predetermined rotational speed together with the rotation axis 150, and may generate radiation of different energy by each target disposed to overlap the traveling path of the electron beam E. FIG. Can be.

As shown in FIG. 4, the targets 141, 142, and 143 installed on the radiation generating target 140 collide with the electron beam E to generate radiation having different energies. It can be configured as a target and a third target. The first to third targets may be composed of different materials.

The first target 141 may be a target for X-ray generation, the second target 142 may be made as a target for neutron generation, and the third target 143 may be made as a target for gamma ray generation. In addition, if one target is not filled with a specific material, the electron beam E does not collide and just passes, so any one target that is empty inside may be configured as an electron beam E target.

Through this, the first target 141 may be configured to collide with the electron beam E to generate X-rays, and the second target 142 may be configured to collide with the electron beam E to generate neutron rays. In addition, the third target 143 may be composed of gamma rays colliding with the electron beam E, and through each of the targets 141, 142, and 143, the X-rays, neutron rays, It will be able to form gamma rays.

5A and 5B are conceptual views illustrating a state in which the radiation generation target 140 is rotated in a clockwise direction.

As described above, the radiation generating target 140 may rotate along the clockwise direction at a predetermined rotational speed together with the rotation axis 150, and each target installed on the radiation generating target 140 is rotated as a cover plate ( The irradiation hole 131 formed in the 130 and the electron beam E may be positioned to overlap each other along the irradiation direction. In this case, the radiation due to the collision with the electron beam E may be generated through any one of the targets positioned to overlap the irradiation hole 131. The rotation speed and rotation direction of the radiation generating target 140 and synchronization with the electron beam E may be performed in the controller.

The sensor unit 180 may be installed at one side of the bevel gear 172, and the sensor unit may detect a location of each target and transmit the signal to the controller. The controller 230 generates the desired radiation at a desired repetition rate according to a value set by the user in consideration of the rotational speed of the motor 171, the incident speed of the electron beam E by the electron accelerator 220, and the position of each target. You will be able to control.

For example, as shown in (a) of FIG. 5, the first target 141 formed on the radiation generating target 140 is rotated in a clockwise direction, as shown in FIG. When positioned to overlap with 131, since the electron beam E incident through the electron gun 210 and the electron accelerator 220 into the housing 110 collides with the first target, the X-ray is emitted by the first target. Will be created.

6 shows a state in which the radiation generated by the collision of the electron beam E with the target proceeds through the irradiation hole 131. As described above, the radiation generating target 140 may rotate along one direction at a predetermined rotational speed together with the rotation axis 150, and any one target on the radiation generating target 140 rotates to cover plate ( When the radiation hole 131 formed in the 130 and the electron beam E are positioned to overlap each other along the irradiation direction, the collision with the electron beam E may generate radiation according to the characteristics of the target. The generated radiation may be supplied to the device connected to the irradiation hole 131.

7 is a conceptual diagram illustrating a state of the radiation source system 200.

The radiation source system 200 according to the present invention may selectively generate at least one of several types of radiation having different energies.

The radiation source system 200 may accelerate the electron beam generated by the electron gun 210 by the electron accelerator 220 and then collide the accelerated electron beam with the target device 100 to obtain radiation.

The radiation source system 200 is connected to an electron gun 210 that generates an electron beam, an electron gun 210, and an electron accelerator 220 and an electron accelerator 220 which are formed to accelerate the electron beam generated by the electron gun 210. And a target device 100 that is configured to generate radiation by receiving the accelerated electron beam from the electron accelerator 220.

After accelerating the electron beam generated by the electron gun 210 (see FIG. 7) by the electron accelerator 220, the accelerated electron beam may collide with the target device 100 to obtain desired radiation. In general, in order to generate radiation through a radiation source system, one electron gun, one electron accelerator, and a target device are required for each type of radiation. However, in the case of the present invention, since a desired type of radiation can be generated at a desired speed through a radiation generating target installed in the target device, a plurality of devices for generating various types of radiation are unnecessary, thereby reducing installation space and cost. This can solve the hassle of operating the necessary equipment individually.

The electron gun 210 is configured to include an electrode, and when an electric current is applied to the electrode, the electron gun 210 can generate the electron beam E. The electron accelerator 220 is formed to accelerate the electron beam E generated by the electron gun 210. The electron beam E is accelerated while sequentially passing through a buncher cavity and an acceleration cavity provided in the electron accelerator 220.

The radiation source system 200 according to the present invention may alternately generate X-rays and neutron beams with a time difference through the target device 100. For example, the target device 100 may be controlled so that the X-rays and the neutron rays are alternately generated according to a set time.

Since the radiation source system 200 according to the present invention does not require separate devices for each type of radiation in order to generate various types of radiation, a plurality of devices for generating different types of radiation are not required, and thus, installation space and cost This can reduce the hassle of having to operate the necessary equipment individually.

The radiation source system 200 controls the electron gun 210, the electron accelerator 220, and the target device 100 so that the position of the target of the target device 100 can be changed in accordance with the electron beam generation speed of the electron gun 210. It may be configured to further include a control unit 230 to synchronize with each other.

The controller 230 serves to synchronize the electron gun 210 and the target device 100 of the radiation source system with each other.

The controller 230 may generate a desired kind of radiation at a desired repetition rate by transmitting a synchronization signal toward the electron gun 210 and the target device 100.

For example, the controller 230 may transmit a synchronization signal to the electron gun 210 to control the irradiation speed of the electron beam and its repetition rate, and may be generated in the electron gun 210 by transmitting the synchronization signal to the target device 100. The electron beam will be able to determine the type of radiation generated and its repetition rate as it strikes the radiation generating target. For example, when a total of three targets are installed in the radiation generating target, the generation repetition rate of the electron beam is set to 300 Hz by the control unit, and the rotation speed of the radiation generation target is controlled by the control unit 230 with the electron beam E generation repetition rate. Likewise, when synchronized to 300Hz, it will be possible to generate different kinds of radiation once per 100Hz.

In the present invention, the radiation generation target included in the target device 100 may be configured to be synchronized with the control unit so as to obtain a desired kind of radiation even at a high speed of approximately 600 rpm or more, and the radiation source system 200 may be configured as a target device ( 100), it is possible to selectively generate the desired X-rays, neutron rays, gamma rays and electron beams.

8 is a conceptual diagram showing a state of a container searcher which is a type of non-destructive inspection system according to the present invention.

The non-destructive inspection system 300 refers to the external inspection of the properties of the product without destroying the product, and refers to a set of equipment for implementing the non-destructive inspection. The non-destructive inspection system 300 may be utilized in various fields, such as medical, security, and quarantine. In particular, a container for searching for air baggage, inspection of cargo or mail at a port or airport, and a container for searching a container loaded with import and export cargo It can be applied to a search apparatus or the like.

The non-destructive inspection system 300 refers to a system that irradiates the inspection object 10 with radiation and obtains an internal image of the inspection object 10 through transmitted radiation information. Here, the inspection object 10 may mean various things such as an air baggage, a container, a traveler's bag for a security search object.

In the non-destructive inspection system 300 according to the present invention, after irradiating radiation having different energy generated in the radiation source system 200 of FIG. 7 to the inspection object 10, image information regarding the inspection object 10 may be obtained. Configured to obtain. The non-destructive inspection system 300 is configured to include a radiation source system 200, an inspection object moving unit 320, a radiation detection unit 330, and an imaging system (not shown).

That is, the non-destructive inspection system according to the present invention includes a radiation source system configured to generate radiation having different energies and irradiate them toward the inspection object; An inspection object moving unit which varies the position of the inspection object; A radiation detector configured to detect radiation having different energy passing through the inspection object; And an imaging system for acquiring image information of the inspection object by using the detected radiation information.

The radiation source system includes an electron gun for generating an electron beam; An electron accelerator connected to the electron gun and configured to accelerate the electron beam generated by the electron gun; And a target device connected to the electron accelerator and configured to generate radiation by receiving the electron beam accelerated by the electron accelerator.

The target device may include a housing having one end opened and a vacuum chamber formed therein; An inner case formed in a cylindrical shape protruding toward the vacuum chamber and installed inside the housing and having an electron beam injection hole formed in a front portion thereof so that the electron beam is incident toward the housing; A cover plate fixed to the housing to cover the opened end of the housing; A driving unit having a rotating shaft installed to penetrate the cover plate and the inner case and a motor for rotating the rotating shaft; And a radiation generating target coupled to the rotation axis and configured to rotate in one direction and configured to form radiation having different energies as the incident electron beam passes.

In addition, the non-destructive testing system may be configured to include at least one collimator 350. In particular, the radiation source collimator 350a is disposed between the target device 100 and the radiation detector 330, and serves to process radiation generated from the target device 100 to be suitable for non-destructive inspection.

The radiation source system 200 may be configured to irradiate toward the object 10 while selectively generating X-rays, neutron beams, and electron beams. At this time, the generated X-rays may be irradiated to the test object 10 to retrieve the shape information of the test object 10, the neutron beam is the material information of the test object 10, for example, PVC, Graphite, It may be investigated to search for Sugar, Wood, Glass, Radioactive Materials, Al, Fe, Pb, etc.

Here, the radiation source system 200 is configured to generate radiation, and as shown in FIG. 7, the electron beam generated by the electron gun 210 (see FIG. 7) is accelerated by the electron accelerator 220 and then accelerated. Radiation is generated while colliding the electron beam with the target device 100.

The test object moving unit 320 serves to change the position of the test object 10, and the test object moving unit 320 may move the test object 10 at a constant speed. In addition, when the non-destructive inspection system 300 is a small, such as a cargo retrieval device, the inspection object moving through the inspection object moving unit 320, the inspection object to move up and down or rotate clockwise or counterclockwise, the inspection object 10 It will be possible to irradiate the radiation generated in the radiation source system 200 toward.

The radiation detector 330 detects X-rays and neutron beams transmitted through the object 10, respectively.

The imaging system (not shown) serves to generate an image based on the result detected by the radiation detector 330, and based on the X-ray and the neutron beam transmitted through the inspection object 10, the inspection object 10 It is possible to obtain the information of the object to be inspected by generating an image of.

In addition, the non-destructive inspection system 300 may be configured to further include a shield (not shown) formed around the propagation path of the X-rays or neutron beams so that external leakage of the X-rays or neutron beams can be limited. Can be. The shield may be made to form a closed space with thick metal walls on all sides to prevent radiation from being emitted to the environment.

The non-destructive inspection system described above is not limited to the configuration and method of the embodiments described above, the embodiments may be configured by selectively combining all or a part of the embodiments so that various modifications can be made.

10: test target 100: target device
110: housing 120: inner case
130: cover plate 140: radiation generating target
150: rotating shaft 160: vacuum feed-through
170: drive unit 180: sensor unit
200: radiation source system 210: electron gun
220: electronic accelerator 230: control unit
300: nondestructive inspection system

Claims (12)

A housing having one end opened and a vacuum chamber formed therein;
An inner case formed in a cylindrical shape and installed inside the housing and having an electron beam injection hole formed in a front portion thereof so that the electron beam is incident toward the housing;
A cover plate fixed to the housing to cover the opened end of the housing;
A driving unit having a rotating shaft installed to penetrate the cover plate and the inner case, respectively, and a motor for rotating the rotating shaft; And
A radiation generating target coupled to the rotation axis and configured to rotate in one direction, the radiation generating target colliding with the incident electron beam to form radiation having different energies,
The cover plate, the irradiation device is formed in a position overlapping with the electron beam injection hole, the target device characterized in that the radiation generated from the radiation generating target through the irradiation hole passes. delete The method of claim 1,
The radiation generating target,
A rotary shaft support configured to support the rotary shaft; And
And a plurality of targets disposed to be spaced apart from the rotation shaft support by a predetermined distance along an outer side of the circumference of the rotation shaft support. The method of claim 1,
The radiation generating target, at least one target for generating different kinds of radiation on the plate partitioned into a plurality of areas are arranged in each area of the plate,
And the driving unit is connected to the radiation generating target through the rotation axis to determine a target to which the electron beam is irradiated while rotating the radiation generating target. The method of claim 4, wherein
Wherein each of the targets is made of a different material and generates radiation having different energies as the electron beam passes. The method of claim 4, wherein
The radiation generating target is a target device, characterized in that for generating radiation having a different energy by each target disposed to overlap on the traveling path of the electron beam while rotating at a predetermined rotational speed with the rotation axis. The method of claim 1,
Target device, characterized in that the vacuum port is installed on one side of the housing so that the inside of the housing is in a vacuum state. The method of claim 1,
The driving unit is a target device, characterized in that for providing a driving force to the rotating shaft so that the position and rotation angle of the radiation generating target. The method of claim 8,
The driving unit, the one end is connected to the motor and the other end is connected to the rotating shaft, the target device comprising a bevel gear for transmitting a rotational force formed from the motor to the rotating shaft. The method of claim 1,
The motor is installed in a direction crossing the direction in which the rotation axis extends, the target device, characterized in that positioned to be spaced apart from the irradiation hole. An electron gun for generating an electron beam;
An electron accelerator connected to the electron gun and configured to accelerate the electron beam generated by the electron gun; And
A target device connected to the electron accelerator and configured to generate radiation by receiving the electron beam accelerated by the electron accelerator,
The target device,
A housing having one end opened and a vacuum chamber formed therein;
An inner case formed in a cylindrical shape protruding toward the vacuum chamber and installed inside the housing and having an electron beam injection hole formed in a front portion thereof so that the electron beam is incident toward the housing;
A cover plate fixed to the housing to cover the opened end of the housing;
A driving unit having a rotating shaft installed to penetrate the cover plate and the inner case and a motor for rotating the rotating shaft; And
And a radiation generating target coupled to the axis of rotation and configured to rotate in one direction and configured to form radiation having different energies as the incident electron beam passes. The method of claim 11,
And a control unit configured to synchronize the electron gun, the electron accelerator, and the target device with each other so that the position of the target of the target device is changed in accordance with the electron beam generation speed of the electron gun.

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