KR101377175B1 - Holder assembly for cyclotron and cyclotron including the same - Google Patents

Abstract

The present invention provides a holder assembly for a cyclotron having an improved structure so as to have a thin film corresponding to a plurality of beams having respective energy levels and to selectively convert a plurality of beams having respective energy levels into proton beams, and It relates to a cyclotron containing. A holder assembly for a cyclotron having a body in which a plurality of beams each having a different particle accelerated energy level is generated according to the present invention is a particle accelerated beam corresponding to beams having different energy levels that are particle accelerated inside the main body. It characterized in that it comprises a plurality of thin films for converting the to a proton beam, and a plurality of thin films are disposed in the circumferential direction at regular intervals and the plurality of thin films are rotated so as to correspond to the particle accelerated beam selectively. Accordingly, by providing a holder assembly capable of rotational movement and reciprocating movement with a plurality of thin films having different thicknesses so as to selectively convert a plurality of beams having different energy levels and rotational radii into proton beams selectively, Conversion efficiency can be improved.

Description

Holder assembly for cyclotron and cyclotron comprising same {HOLDER ASSEMBLY FOR CYCLOTRON AND CYCLOTRON INCLUDING THE SAME}

The present invention relates to a holder assembly for a cyclotron and a cyclotron including the same, and more particularly, to a holder assembly for a cyclotron and a cyclotron including the same, which can convert a particle accelerated beam into a proton beam and draw it out.

A particle accelerator is a device that artificially accelerates charged particles using the principle of electromagnetic. The particle accelerator is divided into a linear accelerator and a circular accelerator according to the acceleration method.

Linear accelerators primarily accelerate electrons along a high vacuum straight-line orbit, such as accelerating at a moment as a DC high voltage, such as a Cocroft-Wilton device or a Van der Graff generator, and using a high frequency electric field .

On the other hand, a circular accelerator accelerates particles along a high vacuum circular orbit, such as cyclotron, betatron, and synchrotron.

1 is a schematic plan view of a cyclotron.

As shown in FIG. 1, the cyclotron 101 includes a main body 110 having a chamber 112 for beam acceleration and a beam lead-out portion 114 for beam extraction, and a particle accelerated particle formed in the chamber 112. The holder assembly 130 converts the beam into a proton beam and guides the beam to the beam extraction unit, and the switching magnetic unit 120 distributes the proton beam guided to the beam extraction unit 114 by the holder assembly 130.

In the chamber of the body of such a conventional cyclotron, a plurality of beams each having different energy levels (where energy levels are A < B < C < D &lt; In the particle acceleration direction of the beam, the holder assembly is disposed in the transverse direction, and the thin film provided in the holder assembly converts the particle accelerated beam into a proton beam and guides it to the beam outlet.

By the way, the conventional cyclotron converts into a proton beam using a thin film having the same thickness for a plurality of beams having different energy levels, thereby degrading the proton beam conversion efficiency when passing through the thin film.

Accordingly, an object of the present invention is to provide a cyclotron having an improved structure so as to have a thin film corresponding to a plurality of beams having respective energy levels and to selectively convert a plurality of beams having respective energy levels into proton beams. To provide a holder assembly and a cyclotron comprising the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects which are not mentioned will be clearly understood by those skilled in the art from the following description.

According to the present invention, there is provided a holder assembly for a cyclotron having a body in which a plurality of beams having different energy levels, each of which has been accelerated, are produced. A plurality of thin films for converting the particle accelerated beams into proton beams corresponding to the beams having a level, and the plurality of thin films are arranged in a circumferential direction at regular intervals, and the plurality of thin films selectively rotates to correspond to the particle accelerated beams. It is made by a holder assembly for a cyclotron, characterized in that it comprises a rotating support.

Here, the plurality of beams generated inside the main body are each formed in a rotating track having a different radius of rotation, are connected to the rotating support, and a plurality of the thin films are selectively formed in accordance with the separation distance of the rotating track of each beam. The positioning unit may further include a position moving unit reciprocating in the horizontal direction with respect to the rotating track of the beams so as to be positioned in the rotating track of the beams.

Preferably, the plurality of thin films may have different thicknesses corresponding to the plurality of beams having different energy levels.

On the other hand, according to the present invention, in the cyclotron, according to the present invention, a main body and a plurality of beams, each of which has a different energy level and a plurality of beams accelerated in a rotational trajectory of different rotation radius, respectively, are generated; A plurality of thin films for converting the beams into proton beams corresponding to the plurality of thin films and the plurality of thin films are arranged at regular intervals, and the plurality of thin films are selectively rotated so as to correspond to the particle-accelerated beams and connected to the rotating support parts. A holder assembly having a position moving part reciprocally moved such that the plurality of thin films are selectively positioned on a rotational track of each beam, an input part receiving an operation signal to operate at least one of the rotation support part and the position moving part; Driving to provide a driving force to at least one of the rotation support and the position moving portion And, based on the signal from the input unit, composed by the cyclotron to a control unit for controlling the driving unit so that the rotary support and at least one of the position will be the East is operating.

Here, the plurality of thin films preferably have different thicknesses corresponding to the plurality of beams having different energy levels.

The details of other embodiments are included in the detailed description and drawings.

Therefore, according to the above solution, a plurality of thin films having different thicknesses can be provided to selectively change a plurality of beams having different energy levels into proton beams, thereby increasing the beam conversion efficiency. A holder assembly for a cyclotron and a cyclotron comprising the same are provided.

In addition, by providing a holder assembly capable of rotational movement and reciprocating movement so as to selectively convert a plurality of beams having different energy levels and rotational radii into proton beams, the conversion efficiency of the beam can be improved.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic plan view of a typical cyclotron,
2 is a control block diagram of a cyclotron according to a preferred embodiment of the present invention;
3 is a schematic plan view of a cyclotron according to a preferred embodiment of the present invention;
4 is a perspective view of the holder assembly shown in FIG. 3.

Advantages and features of the present invention, and a configuration and method for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. For reference, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is a control block diagram of a cyclotron according to a preferred embodiment of the present invention, Figure 3 is a schematic plan view of a cyclotron according to a preferred embodiment of the present invention.

As shown in FIG. 2 and FIG. 3, the cyclotron 1 according to the preferred embodiment of the present invention includes a main body 10, a switching magnetic part 20, a holder assembly 30, and an input unit 50. ), A driving unit 60, a control unit 70, and a feedback unit 80.

The cyclotron described below is a kind of particle accelerator which uses a moving charged particle to draw a circle in a magnetic field, and rotates the particle in the magnetic field and accelerates the high frequency voltage repeatedly according to the rotation period. This cyclotron was invented by E.O Lawrence of the United States in 1932, with a cylindrical accelerator tube between the poles of a large electromagnet, with the semicircular hollow electrodes D facing each other. Here, the particles are released from an ion source in the center of the acceleration tube, start to move in a strong magnetic field, and apply a voltage to be accelerated in the direction of travel each time the particle passes through the gap in D.

The main body 10 includes a chamber 12 and a beam lead-out unit 14 as an embodiment of the present invention. The main body 10 is manufactured in a cylindrical shape, and the main body 10 is disposed so that two upper and lower components face each other to form a chamber 12 between the two components. Outside the body 10, a coil unit (not shown), which is an assembly of coils having a plurality of windings, is disposed to generate an electric field and a magnetic field to form a magnetic field inside the chamber 12. Since the coil part is a general component of the cyclotron 1 and is well known, it will be omitted below.

torr 이하로 유지되어야 된다.As described above, the chamber 12 is formed by a pair of configurations. In the chamber 12, a plurality of beams having different energy levels (where energy levels are A < B < C < D) are generated with orbits of different rotational radii under the influence of a magnetic field or the like. The chamber 12 is maintained in a vacuum state so that a beam of particles accelerated and rotated at a constant rotational period collides with gas particles to prevent loss of electrons. For example, for clarity, the second electron of the particle accelerated H-beam has a very weak bonding force with the nucleus, so that it collides with surrounding gas particles before passing through the thin film 32 of the holder assembly 30 which will be described later. Electrons can be lost. Therefore, in order to prevent the electron loss of the H-beam in advance, the chamber 12 has a degree of vacuum.

It should be kept below torr.

The beam lead-out unit 14 is provided at one side of the main body 10 so that the particle accelerated beam is drawn out of the chamber 12. The proton beam converted by the holder assembly 30 is drawn out to the beam lead-out unit 14. Here, the switching magnetic part 20 for distributing the proton beam is disposed in the beam lead-out part 14.

As described above, the switching magnetic part 20 is disposed in the beam drawing part 14 to use a magnetic field, thereby dispersing the proton beam guided to the beam drawing part 14. The reason why the switching magnetic part 20 injects the proton beam is to cause the appropriate proton beam to be directed to a target system not shown in the present invention. Here, as an example, ¹⁸ H ₂ O is provided to react with the proton beam to produce ¹⁸ F.

4 is a perspective view of the holder assembly shown in FIG.

As shown in FIG. 4, the holder assembly 30 of the present invention includes a thin film 32, a thin film support part 34, a rotation support part 36, and a position moving part 38. The holder assembly 30 is disposed in the transverse direction with respect to the acceleration direction of the beam that is rotated inside the main body 10. The holder assembly 30 guides the particle accelerated beam having a constant trajectory inside the main body 10 to the beam outlet 14.

The holder assembly 30 of the present invention operates to selectively convert proton beams to A, B, C, D particle accelerated beams, each having a different energy level. In one embodiment of the present invention, the thin film 32 of the holder assembly 30 is disposed in the particle accelerated beam of A to convert the beam of A into a proton beam. Of course, the thin film 32 of the holder assembly 30 is selectively disposed in each of the beams of A, B, C, D, and can convert any one of the A, B, C, D beams into proton beams. have.

의 두께를 갖는다. 본 발명의 박막(32)은 복수개로 마련된다. 박막(32)은 제1박막(32a), 제2박막(32b) 및 제3박막(32c)을 포함한다.The thin film 32 is formed of a carbon material and converts the particle accelerated beam into a proton beam by using an H-beam. The thin film 32 may allow the beam to pass through.

Has a thickness of. The thin film 32 of this invention is provided in multiple numbers. The thin film 32 includes a first thin film 32a, a second thin film 32b, and a third thin film 32c.

The first thin film 32a, the second thin film 32b, and the third thin film 32c each have different thicknesses corresponding to a plurality of beams having different energy levels. For example, the first thin film 32a having a thickness corresponding to the energy level of the A beam is disposed in the A beam, and the second thin film 32b having a thickness corresponding to the energy level of the B beam is disposed in the B beam. And, the third thin film 32c having a thickness corresponding to the energy levels of the C and D beams may be disposed in either of the C and D beams.

That is, the first thin film 32a, the second thin film 32b, and the third thin film 32c are selectively disposed in the plurality of beams by the rotational movement of the rotation support part 36, thereby improving the conversion efficiency into the proton beam. There is an advantage to this. Here, the first thin film 32a, the second thin film 32b, and the third thin film 32c are just exemplary embodiments, and may have a plurality of thin films 32 having four different thicknesses corresponding to four beams. . Of course, more than three or less than three thin films 32 with different thicknesses may be used.

The thin film support part 34 is disposed between the thin film 32 and the rotation support part 36 to support the thin film 32 with respect to the rotation support part 36. In the thin film support part 34 of the present invention, three thin film support parts 34 are disposed corresponding to the first thin film 32a, the second thin film 32b, and the third thin film 32c. However, as described above, when the number of the thin films 32 is changed, the number of the thin film support parts 34 may be determined correspondingly.

The rotation support part 36 is rotated by the driving force of the drive part 60. Here, the plurality of thin film support parts 34 are disposed on the outer surface of the rotation support part 36 at regular intervals along the circumferential direction. That is, since three thin film support parts 34 of the present invention are provided, the three thin film support parts 34 are disposed at 120 degree intervals along the circumferential direction of the rotation support part 36. The rotation support part 36 is rotated so that the thin film 32 is positioned in the beam corresponding to the energy level by the driving force from the driver 60.

The position moving part 38 is connected to the rotation support part 36 and with respect to the rotational trajectory of the beams such that the plurality of thin films 32 are selectively positioned in the rotational trajectory of each beam according to the separation distance of the rotational trajectory of each beam. It is reciprocated in the horizontal direction. For example, as explained, the position shifter 38 is linearly moved such that the first thin film 32a is positioned in the rotational trajectory of the A beam in order to convert it from the A beam to the proton beam. The position moving part 38 is reciprocated according to the turning radius of each beam. Here, the position moving part 38 supports the rotation support part 36 so that the rotation support part 36 can rotate.

The input unit 50 receives an operation signal to operate at least one of the rotation support unit 36 and the position moving unit 38. The input unit 50 includes a first input unit 52 that receives an operation signal to operate the rotation support unit 36, and a second input unit 54 that receives an operation signal to operate the position moving unit 38.

The driving unit 60 provides a driving force to at least one of the rotation support unit 36 and the position moving unit 38. The driving unit 60 of the present invention includes a first driving unit 62 providing a driving force to the rotation support unit 36 and a second driving unit 64 providing a driving force to the position moving unit 38. The first driver 62 and the second driver 64 are operated in response to an operation signal input by the first input unit 52 and the second input unit 54, respectively. Here, the first driving unit 62 may be formed of a combination of a motor and a gear such that the rotation support unit 36 rotates, and the second driving unit 64 may be a linear motor or the like so that the position moving unit 38 may be linearly moved. It can be made in a configuration.

The control unit 70 controls the operation of the drive unit 60 to operate at least one of the rotation support unit 36 and the position moving unit 38 based on the signal from the input unit 50. For example, the controller 70 controls the operation of the first driver 62 so that the rotary support 36 rotates based on the signal from the first input unit 52. On the other hand, the control unit 70 controls the operation of the second driving unit 64 so that the position moving unit 38 reciprocates based on the signal from the second input unit 54. Of course, the control unit 70, based on the signal from the first input unit 52 and the second input unit 54, the first driving unit 62 so that the rotation support unit 36 and the position moving unit 38 are rotated and reciprocated, respectively. ) And the operation of the second driving unit 64 can be controlled.

Finally, the feedback unit 80 senses the rotational motion and the reciprocating motion of the rotation support part 36 and the position moving part 38, respectively. The feedback unit 80 detects the rotational movement position of the rotation support unit 36 and the reciprocating movement position of the position moving unit 38 in real time, and transmits it to the control unit 70. In this way, the control unit 70 controls the operation of the driving unit 60 so that the rotational movement of the rotation support unit 36 and the reciprocating movement of the position moving unit 38 are precisely based on the detection signal transmitted by the feedback unit 80. . In this case, the feedback unit 80 may use a position sensor so as to detect the position of each of the rotational and reciprocating movements of the rotation support unit 36 and the position movement unit 38.

The operation of the cyclotron 1 according to the preferred embodiment of the present invention by such a configuration will be described in detail below.

First, the rotation support portion 36 and the position movement portion 38 of the holder assembly 30 are rotated and linearly moved so that the second thin film 32b converts the B beam into a proton beam.

Controlling the operation of the first driver 62 so that the first thin film 32a is disposed in the transverse direction with respect to the A beam based on the operation signal provided from the first input unit 52 for converting the A beam into the proton beam. As a result, the rotation support part 36 is rotated.

Then, the position moving part 38 is controlled by controlling the operation of the second driving part 64 based on the operation signal provided from the second input part 54 to move the first thin film 32a in the rotational trajectory of the A beam. Move linearly.

Of course, the order of operation of the rotary support 36 and the position shifter 38 may be alternating, or may be simultaneous.

Accordingly, a plurality of thin films having different thicknesses may be provided to selectively change a plurality of beams having different energy levels into proton beams, thereby increasing beam conversion efficiency.

In addition, by providing a holder assembly capable of rotational movement and reciprocating movement so as to selectively convert a plurality of beams having different energy levels and rotational radii into proton beams, the conversion efficiency of the beam can be improved.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, . Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

1: cyclotron 10: main body
12 chamber 12 beam outlet
20: switching magnetic part 30: holder assembly
32: thin film 32a: first thin film
32b: second thin film 32c: third thin film
34: thin film support 36: rotation support
38: position moving unit 50: input unit
52: first input unit 54: second input unit
60: driving unit 62: first driving unit
64: second driving unit 70: control unit
80: feedback unit

Claims (5)

In a holder assembly for a cyclotron having a body in which a plurality of beams having different energy levels, each of which is particle accelerated, are produced,
A plurality of different thin films corresponding to the plurality of beams having different energy levels accelerated by the particles inside the body, and selectively converting the plurality of beams having different energy levels into proton beams;
And a plurality of different thin films disposed in a circumferential direction at regular intervals, wherein the plurality of different thin films are rotated to selectively rotate to correspond to a particle accelerated beam. The method of claim 1,
The plurality of beams generated inside the main body are each formed with rotation trajectories of different rotation radii,
A position moving part connected to the rotation support part and reciprocally moved in a horizontal direction with respect to the rotational trajectory of the beams such that a plurality of the thin films are selectively positioned in the rotational trajectory of each beam according to the separation distance of the rotational trajectory of each beam. Holder assembly for cyclotron further comprising. The method of claim 1,
And a plurality of the thin films each having a different thickness corresponding to a plurality of beams having different energy levels. In cyclotron,
A main body in which a plurality of beams, each of which has a different energy level and is particle-accelerated into rotational trajectories of different rotational radii, are produced;
A plurality of different thin films corresponding to the plurality of beams having different energy levels accelerated by the particles inside the body, and selectively converting the plurality of beams having different energy levels into proton beams,
The plurality of different thin films are arranged at regular intervals, the plurality of different thin films are selectively rotated to correspond to the particle accelerated beam, and is connected to the rotation support portion
A holder assembly having a moving part which is reciprocated so that the plurality of different thin films are selectively positioned on a rotational track of each beam;
An input unit for receiving an operation signal so that at least one of the rotation support unit and the position shift unit is operated;
A driving unit providing a driving force to at least one of the rotation support unit and the position moving unit;
And a control unit for controlling the driving unit to operate at least one of the rotation support unit and the position shifting unit based on a signal from the input unit. 5. The method of claim 4,
And a plurality of the thin films each having a different thickness corresponding to a plurality of beams having different energy levels.

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