CN111540498A - Irradiator System - Google Patents

Abstract

The present invention provides an irradiator system comprising: the main body is used for shielding the stray radiation of the radioactive source and shielding the external electromagnetic interference; the scattering cavity is accommodated at the position of the maximum inner diameter hole of the third step hole, and a raised positioning part is arranged in a first through hole in the scattering cavity; the source tool sleeve is internally provided with a fourth step hole and a positioning clamping groove, and is sleeved in the first through hole after accommodating the radioactive source; a drum assembly, a part of which is arranged in the second step hole, is provided with a bunchy second through hole and rotates; the first part of the diaphragm assembly is accommodated in the first step hole and used for collimating beam current emitted by the radioactive source; when the second through hole of the rotary drum component rotates to be coaxial with the main body, the beam of the radioactive source is emitted, and after the beam is emitted, the beam is emitted after being collimated by the diaphragm component. Therefore, the radiation leakage level is lower than the environmental protection standard, the beam output or beam stop of the beam current can be controlled through the rotation of the rotary drum, and the current is limited through the diaphragm when the beam is output.

Description

Irradiator System

technical field

The invention relates to the technical field of radiation measurement, in particular to an irradiator system.

Background technique

The irradiator system is used for the verification, calibration and detection of the ionization chamber. Therefore, the irradiator system generally has the characteristics of low leakage radiation and easy control.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide an irradiator system to achieve low radiation leakage and facilitate the control of beam exit and stop of the radiation source.

The present invention provides an irradiator system comprising:

The main body is made of heavy metal composite material. The main body shields the stray radiation of the radiation source and shields the electromagnetic interference from the outside. Two end faces are provided with second stepped holes, the third end face of the main body is provided with third stepped holes, the second end faces are respectively perpendicular to the first end face and the third end face, and the first end face is perpendicular to the first end face and the third end face. The three end faces are parallel;

The scattering cavity, after passing through the second stepped hole, is accommodated at the hole with the largest inner diameter of the third stepped hole. The scattering cavity is provided with a first through hole with the same diameter at both ends and a large middle diameter. The first through hole is provided with a convex positioning portion, and the center of the first through hole is coaxial with the center of the main body;

The source tooling sleeve, in the shape of a stepped cylinder, is provided with a fourth stepped hole and a positioning and clamping slot. After accommodating the radiation source, it is sleeved in the first through hole of the scattering cavity, and passes through the first through hole of the scattering cavity. The positioning snap groove and the protruding positioning portion perform positioning of the socketed position in the scattering cavity, and the center of the source tooling sleeve is coaxial with the center of the main body;

The rotating drum assembly, a part of which is arranged in the second step hole, has a beam-shaped second through hole, and through the rotation, the beam output control and beam stop control are performed on the beam emitted by the radiation source;

A diaphragm assembly, the first part is accommodated in the first step hole, the center of the diaphragm assembly is coaxial with the center of the scattering cavity, and is used for collimating the beam emitted by the radiation source;

When the second through hole of the rotating drum assembly is rotated to be coaxial with the main body, the beam of the radiation source flows out of the beam, and after the beam exits, the beam is collimated by the diaphragm assembly and then emitted.

In a possible implementation, the irradiator system further includes a front tile;

The front tile is in the shape of a horn, the front tile is in contact with the first end face of the main body, and the second part of the diaphragm assembly enters the front tile and is fixed by the front tile.

In a possible implementation manner, the rotating drum assembly includes a rotating drum, a rotating drum bottom shaft and a rotating drum;

The drum is cylindrical, the bundle-shaped second through holes are arranged on the side of the drum, the top of the drum is provided with a first screw hole, and the bottom of the drum is provided with a second hole. screw hole;

One end of the bottom shaft of the rotary drum is screwed with the second screw hole, and the other end of the bottom shaft of the rotary drum is connected in the second step hole through the bearing shaft;

One end of the drum shaft is screwed with the first screw hole, and the other end of the drum shaft is provided with a switch adapter port, which is electrically connected to the control module through the switch adapter port.

In a possible implementation, the irradiator system further includes a control module;

The control module is respectively electrically connected with the power supply module and the screen door structure;

When the power supply module is in a power supply state and the screen door structure is in an open position, or when the power supply module is in a power-off state, the control module generates a first control signal, and passes the first control signal Controlling the rotation of the rotating drum assembly, thereby blocking the beam current of the radioactive source, and performing beam stop control;

When the power supply module is in a power supply state and the screen door structure is in a closed position, the control module generates a second control signal, and controls the rotating drum assembly to rotate through the second control signal, so that all The second through hole is coaxial with the main body, and performs beam output control.

In a possible implementation manner, the control module includes a motor controller and a motor, the bottom shaft of the drum is in the second stepped hole, and is connected to the second stepped hole through a tapered roller bearing, The drum bushing is provided with a deep groove ball bearing;

When the motor controller controls the motor to rotate through the first control signal or the second control signal, the tapered roller bearing and the deep groove ball bearing rotate, thereby driving the drum shaft, the drum bottom shaft and all The drum rotates.

In a possible implementation, the irradiator system further includes an upper cover assembly;

The upper cover assembly includes an upper cover and an upper cover welded body. After the upper cover and the upper cover welded body are connected, the upper cover assembly is provided with a drum shaft.

In a possible implementation manner, the diaphragm assembly includes a diaphragm fixing cylinder and a diaphragm;

The number of the diaphragms is 6, which are arranged in the diaphragm fixing cylinder in sequence, and the first part of the diaphragm fixing cylinder is arranged in the first step hole of the main body, according to the beam current emitted by the radiation source. The apertures of the six apertures are arranged in the aperture fixing cylinder in descending order, and the center of each aperture is aligned with the center of the radiation source.

In a possible implementation, the irradiator system further includes a tail plug assembly;

The tail plug assembly includes a first tail plug and a second tail plug;

The first tail plug is provided with a spring assembly, which cooperates with the source tooling sleeve to fix the radiation source arranged in the source tooling sleeve and shields the stray radiation of the radiation source ;

The second tail plug is disposed in the third step hole, fixes the first tail plug, and shields the stray radiation passing through the first tail plug.

In a possible implementation, the irradiator system further includes an encapsulation housing;

The encapsulation casing is used to encapsulate the main body and the front tile.

By applying the irradiator system provided by the embodiment of the present invention, the stray radiation can be well shielded, and the level of leakage radiation can be guaranteed to be lower than the environmental protection standard, and the beam can be controlled by rotating the drum to control the beam out or stop the beam. , when the beam is out, the current is limited by the diaphragm.

Description of drawings

FIG. 1 is a schematic structural diagram of an irradiator system provided by an embodiment of the present invention;

2 is a schematic diagram of a main body provided by an embodiment of the present invention;

3 is a cross-sectional view of a scattering cavity provided by an embodiment of the present invention;

4A is a schematic diagram of a source tooling sleeve provided by an embodiment of the present invention;

4B is a cross-sectional view of a source tooling sleeve provided by an embodiment of the present invention;

5A is a cross-sectional view of a first tail plug provided by an embodiment of the present invention;

5B is a cross-sectional view of a second tail plug provided by an embodiment of the present invention;

6 is a cross-sectional view of a rotating drum assembly provided by an embodiment of the present invention;

7A is a cross-sectional view of a diaphragm provided by an embodiment of the present invention;

7B is a cross-sectional view of a diaphragm fixing cylinder provided by an embodiment of the present invention;

8 is a cross-sectional view of an upper cover assembly according to an embodiment of the present invention.

Detailed ways

The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The first and second in the following are only for distinction and have no other meaning.

FIG. 1 is a structural diagram of an irradiator system provided by an embodiment of the present invention. The irradiator system includes: a main body 1 , a scattering cavity 2 , a source tooling sleeve 3 , a drum assembly 4 , and a diaphragm assembly 5 .

Specifically, referring to FIG. 2 , the main body 1 is made of a heavy metal composite material. The main body 1 shields the stray radiation of the radiation source and shields the electromagnetic interference from the outside world. The first end face of the main body 1 is provided with a first step hole. 11. The second end face of the main body is provided with a second step hole 12, the third end face of the main body 1 is provided with a third step hole 13, the second end face is respectively perpendicular to the first end face and the third end face, and the first end face and the third end face parallel.

Referring to FIG. 3 , after passing through the second stepped hole 12 , the scattering cavity 2 is accommodated at the hole with the largest inner diameter of the third stepped hole 13 . The scattering cavity 2 is provided with a first through hole 21 with the same diameter at both ends and a larger diameter in the middle. , the first through hole 21 is provided with a convex positioning portion (not shown in the figure), and the center of the first through hole 21 is coaxial with the center of the main body 1 .

Specifically, the third stepped hole 13 in the main body 1 can accommodate the scattering cavity 2, so that the radiation of the radiation source can be shielded through the scattering cavity 2, and due to the setting of the scattering cavity 2, the radiation source can be subsequently fixed on the main body on the center. The scattering cavity 2 has a cylindrical structure, and its size matches the maximum aperture of the third stepped hole 13 . After passing through the second stepped hole 12 , the scattering cavity 2 can be placed in the third stepped hole 13 .

Referring to FIGS. 4A and 4B , the source tooling sleeve 3 is in the shape of a stepped cylinder, with a fourth stepped hole 31 and a positioning snap groove 32 . In the first through hole 21 , the socket position in the scattering cavity 2 is positioned through the positioning snap groove 32 and the convex positioning portion, and the center of the source tooling sleeve 3 is coaxial with the center of the main body 1 .

Specifically, in order to better fix the radiation source, it can be placed in the source tooling sleeve 3 first, and then the source tooling sleeve is sleeved into the scattering cavity 2, and the source tooling sleeve 3 The fixed positioning snap groove 32 is used to fix the position of the source tooling sleeve 3 in the scattering cavity 2 . In addition, the stray radiation can be shielded and the radioactive source can be fixed through the tail plug assembly 8 .

The tail plug assembly 8 includes a first tail plug 81 and a second tail plug 82, respectively referring to FIG. 5A and FIG. 5B. The first tail plug 81 may be provided with a groove 811 for accommodating the spring assembly. The tail plug 81 is placed in the source tooling sleeve 3 , so that the radioactive source is fixed in the source tooling sleeve 3 by the spring assembly arranged in the groove 811 . The structure of the first tail plug 81 is similar to that of the source tooling sleeve 3 . match. The second tail plug 82 is disposed outside the first tail plug and is used to fix the first tail plug 81 so as to better shield the stray radiation of the radioactive source. It can be understood that in order to match the third stepped hole 13 Other tail plugs can also be set to better cooperate with the main body and achieve shielding of stray radiation.

The rotating drum assembly 4, a part of which is disposed in the second step hole 12, has a beam-shaped second through hole 411. By rotating, the beam emitted by the radiation source is controlled to be beam-out and beam-stop.

6, the drum assembly 4 includes a drum 41, a drum bottom shaft 42 and a drum shaft 43;

The drum 41 is cylindrical, the bundle-shaped second through holes 411 are arranged on the side of the drum 41, the upper part of the drum 41 is provided with a first screw hole 412, and the bottom of the drum is provided with a second screw hole 413; One end of the drum bottom shaft 42 is screwed with the second screw hole 413, and the other end of the drum bottom shaft 42 is screwed in the second step hole 12; one end of the drum bottom shaft 43 is screwed with the first screw hole 412, the drum The other end of the shaft 43 is provided with a switch adapter port 431 , and is electrically connected to the control module through the switch adapter port 431 .

Wherein, the control module (not shown in the figure) includes a motor controller and a motor, and is used to control the rotation of the drum assembly 4 .

The control module is respectively electrically connected with the power supply module and the screen door structure; the power supply module is used for power supply of the irradiator system, the screen door structure is used for shielding the irradiator system, and the irradiator system is placed in the screen door structure .

When the power supply module is in a power supply state and the screen door structure is in the open position, or when the power supply module is in a power-off state, the control module generates a first control signal, and controls the rotation of the drum assembly through the first control signal, thereby blocking the The beam current of the radioactive source is controlled by stopping the beam;

When the power supply module is in the power supply state and the screen door structure is in the closed position, the control module generates a second control signal, and controls the rotation of the drum assembly through the second control signal, so that the second through hole is coaxial with the main body, and the output beam control.

Among them, the irradiator system is placed in the structure of the screen door. After the door is opened, a signal will be generated and sent to the motor controller. The motor controller will generate a first control signal, and control the motor to drive the drum assembly through the first control signal. Rotate so that the position of the second through hole in the rotating drum does not coincide with the position of the beam current of the radiation source, thereby blocking the beam current of the radiation source and realizing beam stop control. Correspondingly, when the power is turned off, the motor controller will also perform the same control as after the screen door structure is opened, so that the drum rotates to the set first position to realize the stop control.

When the screen door structure is closed and the power supply module is in the power supply state, if the current position of the drum is the first position, the motor controller generates the second control signal to control the motor, so as to drive the drum assembly to rotate through the motor to Rotate the drum to the set second position to realize beam output control. The second position may be that the centerline of the second through hole coincides with the centerline of the radiation source.

Wherein, the control module includes a motor controller (not shown in the figure) and a motor (not shown in the figure), the bottom shaft 42 of the drum is in the second stepped hole, and is connected to the second stepped hole 12 through the tapered roller bearing 44 Connected, the drum shaft 43 is sleeved with a deep groove ball bearing 45;

When the motor controller controls the motor to rotate through the first control signal or the second control signal, the tapered roller bearing 44 and the deep groove ball bearing 45 rotate, thereby driving the rotating drum shaft 43 , the rotating drum bottom shaft 42 and the rotating drum 41 to rotate.

The first part of the diaphragm assembly 5 is accommodated in the first stepped hole 11 , and the center of the diaphragm assembly 5 is coaxial with the center of the scattering cavity 2 , for collimating the beam emitted by the radiation source. When the second through hole of the rotating drum assembly 5 is rotated to be coaxial with the main body, the beam of the radiation source flows out of the beam, and after the beam exits, the beam is collimated by the diaphragm assembly and then emitted.

The irradiator system also includes a front tile 6; the front tile 6 is trumpet-shaped, the front tile is connected with the first end face of the main body, and the second part of the diaphragm assembly enters the front tile and is fixed by the front tile.

Specifically, referring to FIG. 7A and FIG. 7B , the diaphragm assembly 5 includes a diaphragm 51 and a diaphragm fixing cylinder 52 ; the number of diaphragms 51 is 6, which are sequentially arranged in the diaphragm fixing cylinder 52 . A part is arranged in the first stepped hole 11 of the main body 1. According to the direction of the beam emitted by the radiation source, the apertures of the six apertures 51 are arranged in the aperture fixing cylinder 52 in descending order. The center of 51 is aligned with the center of the radiation source.

The number of the apertures 51 is obtained through many experiments. Through the apertures 51, the required radiation field can be obtained at a specific position. For example, at 100 cm in front of the source, the diameter of the radiation field is 100 mm.

Further, the irradiator system includes a leveling base 10 to level the main body 1 so as to ensure that the entire irradiator system is in a horizontal state during irradiation measurement.

Wherein, each component in the irradiator system, such as the main body 1 , the scattering cavity 2 , the source tooling sleeve 3 , the rotating drum assembly 4 , the diaphragm assembly 5 , etc., is made of alloy materials. The alloy material includes, but is not limited to, lead and cadmium. The radioactive source is Co-60 radioactive source.

Further, the irradiator system also includes a rotating adjustment rod 9, a leveling base 10, a universal hanging wheel 20, a graphite sheet 30, a distance measuring plate 40, a tank body support column 50, a base support column 60, and the rotating adjustment rod 9, By adjusting the inclination angle of the main body, it is convenient to take out or place the radioactive source. The base 10 is leveled, and the main body 1 is leveled, so as to ensure that the main body is in a horizontal state during irradiation measurement. The graphite sheet 30 is used to shield the radioactive source when not in use. The ranging disc 40 is used to measure the distance between the radiation source and the reference device. The tank body support column 50 is used to support the main body, the base support column 60 is used to support the assembled main body, and the assembled main body can be moved by the universal hanging wheel 10 .

Further, the irradiator system can detect the ionization chamber. Therefore, the present application can also provide: an ionization chamber adjustment device (not shown in the figure), the ionization chamber adjustment device is used to adjust the position of the ionization chamber, so that the positions of the ionization chamber and the radiation source are optimal, so as to realize the adjustment of the ionization chamber. Detection of ionization chambers.

The ionization chamber adjustment device includes a base with a first guide rail on the base;

Ionization chamber position adjustment device, including:

The first-level mobile loading platform slides on the first guide rail and translates on the first guide rail, and has a second guide rail, the first guide rail is along the beam direction, and the second guide rail is perpendicular to the direction of the first guide rail;

The secondary mobile loading platform is slidably arranged on the second guide rail and moves in translation on the second guide rail;

The three-stage mobile loading platform is connected to the second-stage mobile loading platform, and includes a vertical lifting adjustment platform, and the vertical lifting adjustment platform is provided with a clamp to clamp the ionization chamber, which is used to adjust the height of the ionization chamber;

Among them, the first-level mobile carrier platform is adjusted to translate on the first guide rail, the second-level mobile carrier platform is adjusted to translate on the second guide rail, and the vertical lift adjustment platform adjusts the height of the ionization chamber so that the beam center of the radiation source is aligned. The sensitive volume center of the ionization chamber.

Next, the working process of the irradiator system will be described.

When assembling, first pass the scattering cavity 2 through the second stepped hole 12 of the main body 1, and then put it into the third stepped hole 13 where the aperture is the largest. Then, after the radiation source is placed in the source tooling sleeve 3, the source The tooling sleeve 3 is matched with the convex positioning part of the scattering cavity through the positioning snap groove, and is fixedly inserted into the scattering cavity. Then, the radioactive source in the source tooling sleeve 3 is fixed through the first tail plug 81. At this time, the spring assembly on the first tail plug plays a pressing and fixed role for the radioactive source, and then the second tail plug is used to fix the radioactive source. 82. Press the first tail plug 81, the second tail plug 82 can be screwed on the first tail plug 81, and then, the third tail plug (not shown in the figure) can also be used for the second tail plug Compression is performed, and the third tail plug is screwed onto the main body, so as to cooperate with the main body 1 through a plurality of other tail plugs to shield the stray radiation of the radiation source.

After placing the drum bottom shaft 42 in the second step hole 12, it is connected with the second step hole through the deep groove bearing, the drum is screwed on the drum bottom shaft, and then the drum shaft is screwed on the drum , the drum shaft is provided with a tapered roller bearing, and then the upper cover assembly 7 is buckled on the drum shaft. After the upper cover assembly 7 is buckled to the drum shaft, the drum shaft partially extends out of the upper cover assembly 7. A deep groove ball bearing is also set, and the switch adapter port of the protruding part can drive the tapered roller bearing and the deep groove ball bearing to rotate through the motor after the motor is electrically connected, and when the motor controller controls the motor, thereby driving the rotating drum The shaft and the bottom shaft of the rotary drum rotate, so that the rotary drum is driven to rotate by the rotary drum shaft and the bottom shaft of the rotary drum, so as to control the beam out or stop of the beam through the rotary drum.

8 , the upper cover assembly 7 includes an upper cover 71 and an upper cover welding body 72 . After the upper cover 71 and the upper cover welding body 72 are connected, the upper cover assembly 7 passes through the drum shaft.

The control module formed by the motor and the motor controller is also electrically connected with the power supply module and the screen door structure, so that when the screen door structure is opened, the motor controller controls the motor to drive the drum assembly to rotate to perform beam stop control. When the screen door body structure is closed and the power supply module supplies power, the motor controller controls the motor to drive the drum assembly to rotate to perform beam output control.

After the diaphragm is placed in the diaphragm fixing cylinder, a part of the diaphragm fixing cylinder is placed in the first step hole of the main body, and the other part of the diaphragm fixing cylinder is placed in the front tile. Then, the beam current when the beam exits is limited by the aperture.

After the main body is encapsulated through the encapsulation shell, the encapsulated main body is moved through the universal lifting ring, and the encapsulated main body is moved into the screen door structure, and the main body is fixed on the leveling base through the main body support column. Level the base to level it. For the leveling base, it is fixed by the base support column. When encapsulated, it also has a front panel and a rear panel. The front panel is placed in front of the diaphragm, and the diaphragm can be protected by the front panel. The rear panel is placed behind the second tail block, and the second tail plug for further fixation.

When the irradiator system is in the screen door structure, after the leveling base is used for leveling, when the power supply module is powered on, the spherical beam emitted by the radiation source passes through the main body, multiple tail plugs, scattering cavity, front tile The stray radiation is shielded to ensure that the beam exits toward the through hole of the drum, and after the beam is limited by the aperture, when the beam is irradiated on the reference device, adjust the beam exit position so that the cross center of the beam and the reference device change the relative distance between the reference device and the radiation source, and adjust the beam exit position again, so that the cross center of the beam and the center of the reference device coincide again; continue to adjust the beam exit position until the beam cross center Always coincide with the center of the reference device. Thus, the calibration of the reference value of the radioactive source is realized.

After calibrating the reference value, when the ionization chamber is detected by the irradiator system, the ionization chamber is set on the ionization chamber adjustment device. The ionization chamber adjustment device includes a base and an ionization chamber position adjustment device. a guide rail.

The first-level mobile loading platform slides on the first guide rail, moves in translation on the first guide rail, and has a second guide rail, the first guide rail is along the beam direction, and the second guide rail is perpendicular to the direction of the first guide rail; The loading platform is slidably arranged on the second guide rail and translates on the second guide rail; the third-stage mobile loading platform is connected with the second-level moving loading platform, including a vertical lifting adjustment platform, which is on the vertical lifting adjustment platform. There is a clamp to clamp the ionization chamber, which is used to adjust the height of the ionization chamber; adjust the translation of the first-level mobile load platform on the first guide rail, the second-level mobile load platform on the second guide rail, and the vertical lifting adjustment platform adjustment The height of the ionization chamber is such that the center of the beam is aligned with the center of the sensitive volume of the ionization chamber, and the center of the beam is at the same position as the center of the main beam of the ionization chamber.

Specifically, the first-level moving stage is adjusted along the beam direction, that is, the X-axis adjustment is performed. The secondary mobile stage is adjusted in the horizontal plane along the Y-axis perpendicular to the X-axis direction. The up-and-down adjustment of the three-stage mobile load platform along the vertical direction is the Z-axis adjustment.

By applying the irradiator system provided by the embodiment of the present invention, the stray radiation can be well shielded, and the level of leakage radiation can be guaranteed to be lower than the environmental protection standard, and the beam can be controlled by rotating the drum to control the beam out or stop the beam. , when the beam is out, the current is limited by the diaphragm.

Professionals should be further aware that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. Interchangeability, the above description has generally described the components and steps of each example in terms of function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be implemented in hardware, a software module executed by a processor, or a combination of the two. A software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.

The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.

Claims (9)

1. An irradiator system, comprising:

the radiation source comprises a main body and a radiation source, wherein the main body is made of a heavy metal composite material, shields stray radiation of the radiation source and shields external electromagnetic interference, a first stepped hole is formed in a first end face of the main body, a second stepped hole is formed in a second end face of the main body, a third stepped hole is formed in a third end face of the main body, the second end face is perpendicular to the first end face and the third end face respectively, and the first end face is parallel to the third end face;

the scattering cavity is accommodated at the position of the maximum inner diameter hole of the third step hole after passing through the second step hole, a first through hole with the same caliber at two ends and a large caliber in the middle is formed in the scattering cavity, a raised positioning part is arranged in the first through hole, and the center of the first through hole is coaxial with the center of the main body;

the source tooling sleeve is in a stepped cylindrical shape, is internally provided with a fourth stepped hole and is provided with a positioning clamping groove, is sleeved in the first through hole of the scattering cavity after accommodating a radioactive source and is positioned at the sleeved position in the scattering cavity through the positioning clamping groove and the raised positioning part, and the center of the source tooling sleeve is coaxial with the center of the main body;

a rotary drum assembly, a part of which is arranged in the second step hole and is provided with a beam-shaped second through hole, and the rotary drum assembly controls the beam output and beam stop of the beam emitted by the radioactive source through rotation;

the first part of the diaphragm assembly is accommodated in the first step hole, and the center of the diaphragm assembly is coaxial with the center of the scattering cavity and is used for collimating beam current emitted by the radioactive source;

when the second through hole of the rotary drum assembly rotates to be coaxial with the main body, the beam of the radioactive source is emitted, and after the beam is emitted, the beam is emitted after being collimated by the diaphragm assembly.

2. The applicator system of claim 1, further comprising a front tile;

the front tile is horn-shaped, the front tile is connected with the first end face of the main body, and the second part of the diaphragm assembly enters the front tile and is fixed through the front tile.

3. An applicator system as claimed in claim 1, wherein said drum assembly comprises a drum, a drum bottom shaft and a drum;

the rotary drum is cylindrical, the bundle-shaped second through hole is formed in the side face of the rotary drum, a first screw hole is formed in the upper portion of the rotary drum, and a second screw hole is formed in the bottom of the rotary drum;

one end of the rotary drum bottom shaft is in threaded connection with the second screw hole, and the other end of the rotary drum bottom shaft is in shaft connection with the second step hole through a bearing;

one end of the rotary drum shaft is in threaded connection with the first screw hole, and the other end of the rotary drum shaft is provided with a switch adaptation port and is electrically connected with the control module through the switch adaptation port.

4. The irradiator system of claim 1, further comprising a control module;

the control module is electrically connected with the power supply module and the shielding door body structure respectively;

when the power supply module is in a power supply state and the shielding door body structure is in an opening position, or when the power supply module is in a power-off state, the control module generates a first control signal and controls the rotary drum assembly to rotate through the first control signal, so that beam current of the radioactive source is blocked and beam stop control is performed;

when the power supply module is in a power supply state and the shielding door body structure is in a closed position, the control module generates a second control signal and controls the rotary drum assembly to rotate through the second control signal, so that the second through hole is coaxial with the main body and beam outgoing control is performed.

5. The irradiator system of claim 4, wherein the control module comprises a motor controller and a motor, the drum bottom shaft is in the second stepped hole and is connected with the second stepped hole through a tapered roller bearing, and the drum shaft is sleeved with a deep groove ball bearing;

when the motor controller controls the motor to rotate through the first control signal or the second control signal, the tapered roller bearing and the deep groove ball bearing rotate, and therefore the rotary drum shaft, the rotary drum bottom shaft and the rotary drum are driven to rotate.

6. The applicator system of claim 3, further comprising an upper cover assembly;

the upper cover subassembly includes upper cover and upper cover welding body, the upper cover with the upper cover welding body meets the back, the upper cover subassembly is worn to be equipped with the rotary drum axle.

7. The irradiator system of claim 1, wherein the diaphragm assembly comprises a diaphragm-holding cylinder and a diaphragm;

the quantity of diaphragm is 6, sets gradually in the fixed section of thick bamboo of diaphragm, the first part setting of the fixed section of thick bamboo of diaphragm is in the first step hole of main part, according to the direction of the beam current that the radiation source jetted out, six the aperture of diaphragm is arranged according to the order from big to little in the fixed section of thick bamboo of diaphragm, every the center of diaphragm with the center alignment of radiation source.

8. The irradiator system of claim 1, further comprising a trailing plug assembly;

the tail plug assembly comprises a first tail plug and a second tail plug;

the first tail plug is provided with a spring assembly which is matched with the source tool sleeve in a row, fixes a radioactive source arranged in the source tool sleeve and shields stray radiation of the radioactive source;

the second tail plug is arranged in the third step hole, fixes the first tail plug and shields stray radiation penetrating through the first tail plug.

9. The applicator system of claim 2, further comprising an enclosure housing;

the packaging shell is used for packaging the main body and the front tile.

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