CN116709627A - Novel stripping target for beam extraction of cyclotron and beam extraction method - Google Patents
Novel stripping target for beam extraction of cyclotron and beam extraction method Download PDFInfo
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- CN116709627A CN116709627A CN202310757182.6A CN202310757182A CN116709627A CN 116709627 A CN116709627 A CN 116709627A CN 202310757182 A CN202310757182 A CN 202310757182A CN 116709627 A CN116709627 A CN 116709627A
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- 238000000605 extraction Methods 0.000 title claims abstract description 69
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 42
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 239000011553 magnetic fluid Substances 0.000 claims description 38
- 238000009434 installation Methods 0.000 claims description 36
- 239000000919 ceramic Substances 0.000 claims description 27
- 229910000906 Bronze Inorganic materials 0.000 claims description 22
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 22
- 239000010974 bronze Substances 0.000 claims description 22
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 22
- 125000006850 spacer group Chemical group 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000009206 nuclear medicine Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H13/00—Magnetic resonance accelerators; Cyclotrons
- H05H13/005—Cyclotrons
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H6/00—Targets for producing nuclear reactions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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- High Energy & Nuclear Physics (AREA)
- Optics & Photonics (AREA)
- Particle Accelerators (AREA)
Abstract
The application discloses a novel stripping target for beam extraction of a cyclotron and a beam extraction method, wherein the stripping target comprises the following components: the fixing piece comprises a vacuum chamber window cover plate, a motor support connected to one side of the vacuum chamber window cover plate, and an aluminum alloy support connected to the other side of the vacuum chamber window cover plate; further comprises: the driving piece is connected with the fixing piece and drives the sliding piece to slide along a preset stroke; the sliding piece is connected with the driving piece and drives the swinging piece to swing, so that the stripping film moves, and the beam extraction track is changed; and the swinging piece is connected with the sliding piece. The utility model discloses can effectively realize peeling off under the circumstances of multiple functions such as measuring beam, spacing, insulation, simplified peeling off target structure and realized peeling off fast and draw forth proton beam, this peeling off target simple structure, cost of manufacture are low, the preparation cycle is short, and then adapt to some special, experimental, temporary operating conditions.
Description
Technical Field
The application relates to a stripping target, in particular to a novel stripping target for extracting beam of a cyclotron and a beam extraction method.
Background
Since the international 1 st cyclotron was used in 1932 for physical experimental work, compact high-current proton cyclotrons based on the stripping extraction mode have been developed to a great extent and have found tremendous applications, particularly in the field of nuclear medicine. About 1300 compact high-current proton cyclotrons are used in the nuclear medicine field worldwide according to the statistics of international atomic energy institutions. The most common international stripping extraction cyclotrons are those accelerating particles such as H-, D-, H+2 and the like, and the extraction of proton beam current is realized by carrying out electron stripping on the accelerated ions through a stripping film.
However, due to the limited space size inside the cyclotron and the obstruction of the yoke outside the vacuum chamber, the installation space and the movement distance of the peeling target are limited, and in order to achieve fine adjustment of the peeling film position and multi-dimensional directional control, a complex system structure is often required. This requires sufficient design time, trial and error experience and manufacturing costs, while considering the feasibility of installation and repair disassembly.
The fixed beam extraction radius corresponds to the same extraction energy, and for a cyclotron with lower beam extraction energy and fixed energy, the stripping target structure can be simplified to rapidly realize stripping and extracting proton beam, especially for some special, experimental and temporary operation conditions, such as occasions with lower required beam energy and a beam stripping point which is far from the vacuum chamber wall but fixed.
Therefore, the stripping target system of the novel cyclotron is researched aiming at the application occasions, the manufacturing cost and the installation difficulty of the stripping target can be reduced, the working efficiency is improved, and the stripping target system has profound significance for research and development of various operation condition experiments of the cyclotron in China.
Disclosure of Invention
The application aims to: a novel stripping target for beam extraction of a cyclotron and a beam extraction method are provided to solve the problems existing in the prior art.
The technical scheme is as follows: a novel lift-off target for cyclotron beam extraction, comprising:
the fixing piece comprises a vacuum chamber window cover plate, a motor support connected to one side of the vacuum chamber window cover plate, and an aluminum alloy support connected to the other side of the vacuum chamber window cover plate;
further comprises:
the driving piece is connected with the fixing piece and used for driving the sliding piece to slide along a preset stroke;
the sliding piece is connected with the driving piece and is used for driving the swinging piece to swing so as to enable the stripping film to move, and then the beam extraction track is changed;
a swinging member connected with the sliding member, comprising: and the connecting rod assembly is connected with the sliding piece, and the peeling film frame is arranged at the end part of the connecting rod assembly.
The utility model discloses can effectively realize peeling off, survey beam, spacing, insulating multiple functions's under the condition has simplified peeling off target structure and realized peeling off fast and draw forth proton beam, this peeling off target simple structure, cost of manufacture are low, the preparation cycle is short, and then adapt to some special, experimental, temporary operating conditions, when required beam energy is lower like, the beam is peeled off the occasion that the point is far away from vacuum chamber wall distance but fixed.
Meanwhile, for the cyclotron with a fixed extraction position, the size of the connecting rod assembly can be obtained by knowing the beam stripping point and the installation position of the vacuum chamber, so that the manufacturing is completed in a short time, the mechanical structure is simple, faults are not easy to occur, and multiple functions such as stripping, beam measurement, limiting and insulation can be effectively realized.
The installation is convenient, the occupied space of the whole structure is small, the number of accessories is small, and the installation and the disassembly can be completed by a single person;
the assembly does not need to do extra gap avoidance to the magnetic yoke, the vacuum chamber or the magnetic poles, fully utilizes the gap between the magnetic poles, and increases the height of the stripping film to the greatest extent, so that the beam has higher contact probability with the stripping film, and the beam extraction efficiency is high.
The vacuum tightness is good, and the number of leak detection points is small;
the vacuum sealing surface of the stripping target only comprises magnetic fluid sealing and vacuum chamber cover plate sealing, so that the vacuum requirement of the cyclotron can be met.
The method is effectively applicable to the application occasions of the low beam energy cyclotron with larger distance between the beam stripping point and the vacuum chamber window.
In a further embodiment, the driving member includes:
the servo motor is arranged on the motor support;
the output end of the servo motor is provided with an output shaft, the output shaft is connected with a coupler, the coupler is connected with a magnetic fluid main shaft, and the magnetic fluid main shaft penetrates through the window cover plate and the aluminum alloy support frame.
In a further embodiment, the slider comprises:
the screw rod is coaxially connected with the magnetic fluid main shaft;
the tin bronze sliding block is sleeved on the screw rod;
the switch bracket is connected with the aluminum alloy support frame;
and the travel switch is arranged on the travel switch bracket and used for limiting the sliding travel of the tin bronze sliding block.
In a further embodiment, the connecting rod assembly includes:
the connecting rod A is hinged with the tin bronze sliding block;
the connecting rod B is hinged with the connecting rod A and is hinged through a pin, and the joint of the connecting rod A and the connecting rod B with the pin is insulated through a ceramic spacer;
one end of the connecting rod bracket is connected with the aluminum alloy supporting frame, and the other end of the connecting rod bracket is hinged with one end of the connecting rod B, which is far away from the connecting rod A;
and the stripping film frame is connected with one end of the connecting rod B, which is far away from the connecting rod A.
In a further embodiment, a ceramic spacer bush and a ceramic gasket are arranged between the connecting rod support and the aluminum alloy support frame, and the connecting rod support is insulated by the ceramic spacer bush and the ceramic gasket.
In a further embodiment, a magnetic fluid sealing member is further arranged in the aluminum alloy supporting frame.
A beam extraction method for a novel stripped target for cyclotron beam extraction, comprising:
step 1, mounting a stripping target and performing insulation treatment at the same time;
and 2, after the installation is finished, the output shaft is driven to rotate through the servo motor, the coupler drives the magnetic fluid main shaft to rotate, the screw rod is driven to rotate, the tin bronze sliding block is enabled to slide, the connecting rod A and the connecting rod B are driven to swing, the stripping film frame is driven to swing, the stripping film moves along with the stripping film frame, and the beam extraction track is changed.
In a further embodiment, the mounting means is effected by the space outside the cyclotron when mounting the target, comprising:
when the reserved opening exists in the magnetic yoke at the outer side of the installation window, the stripping target can be integrally stretched into the window in the radial direction after the stripping target is installed in advance, and the stripping target is positioned and installed through the window cover plate of the vacuum chamber;
the installation method without reserved opening includes that when the magnetic yoke at the outer side of an installation window has no reserved opening, an aluminum alloy support frame, magnetic fluid, a screw rod, a travel switch and a vacuum chamber window cover plate are connected in advance, then the aluminum alloy support frame, the magnetic fluid, the screw rod, the travel switch and the vacuum chamber window cover plate are integrally installed in a radial extending mode from a vacuum chamber window, then a connecting rod A, a connecting rod B, a connecting rod support and a stripping film frame are installed in the vacuum chamber, and finally a servo motor is installed at the outer side of the vacuum chamber.
In a further embodiment, wiring is performed after the integral installation is completed, and the wires are led out through other reserved outlets of the vacuum chamber;
all parts which start to be in the stripping film direction from the aluminum alloy support frame are in a suspended state, and no direct contact exists on the surface of the magnetic pole;
after the installation is completed, the servo motor at the outer side of the vacuum chamber is fixed on the window cover plate of the vacuum chamber through a motor support, an output shaft of the motor is directly connected with the magnetic fluid main shaft through a coupler, and the magnetic fluid main shaft is coaxial with the screw rod and penetrates through the window cover plate of the vacuum chamber and the aluminum alloy support frame.
In a further embodiment, during insulation treatment, the pin joint of the connecting rod A and the connecting rod B is insulated by a ceramic spacer bush, and the connecting rod support and the aluminum alloy support frame are insulated by the ceramic spacer bush and the ceramic gasket;
and finally, the stripping film transmits the electric signals to the connecting rod B and the connecting rod support, and the beam measuring motor is connected to the connecting rod support.
The beneficial effects are that: the application discloses a novel stripping target for beam extraction of a cyclotron and a beam extraction method, wherein a stripping film frame is driven to move by designing a swinging part, and under the condition that multiple functions such as stripping, beam measurement, limiting, insulation and the like can be effectively realized, a stripping target structure is simplified to rapidly realize stripping and extracting proton beam.
Meanwhile, for the cyclotron with a fixed extraction position, the size of the connecting rod assembly can be obtained by knowing the beam stripping point and the installation position of the vacuum chamber, so that the manufacturing is completed in a short time, the mechanical structure is simple, faults are not easy to occur, and multiple functions such as stripping, beam measurement, limiting and insulation can be effectively realized.
The installation is convenient, the occupied space of the whole structure is small, the number of accessories is small, and the installation and the disassembly can be completed by a single person;
the assembly does not need to do extra gap avoidance to the magnetic yoke, the vacuum chamber or the magnetic poles, fully utilizes the gap between the magnetic poles, and increases the height of the stripping film to the greatest extent, so that the beam has higher contact probability with the stripping film, and the beam extraction efficiency is high.
The vacuum tightness is good, and the number of leak detection points is small;
the vacuum sealing surface of the stripping target only comprises magnetic fluid sealing and vacuum chamber cover plate sealing, so that the vacuum requirement of the cyclotron can be met.
The method is effectively applicable to the application occasions of the low beam energy cyclotron with larger distance between the beam stripping point and the vacuum chamber window.
Drawings
Fig. 1 is a schematic structural view of the present application.
FIG. 2 is a schematic drawing of the extraction trajectory of a cyclotron after stripping by the stripped target beam of the present application.
Fig. 3 is a schematic flow chart of the method of the present application.
The reference numerals are:
1. a servo motor; 2. a motor support; 3. a coupling; 4. a vacuum chamber window cover plate; 5. an aluminum alloy support frame; 6. a magnetic fluid seal; 7. a screw rod; 8. a tin bronze slider; 9. a travel switch; 10. a switch bracket; 11. a connecting rod A; 12. a connecting rod B; 13. a connecting rod bracket; 14. stripping the film frame; 15. and (5) a pin.
Detailed Description
The present application relates to a novel stripping target for beam extraction of a cyclotron and a beam extraction method, and is explained in detail below by means of specific embodiments.
The stripping target is a core device for controlling beam extraction of the cyclotron, a motor is remotely operated, related mechanical structures are driven to control the stripping film to reach a designated position, the proton beam extraction track is corrected, and finally the proton beam is successfully extracted at a corresponding vacuum chamber window.
Stripping extraction principle: in the development process of the cyclotron, the stripping extraction method is an important extraction method for obtaining a strong-flow proton beam;
the basic principle is that an electron stripping film is arranged on an ion orbit with corresponding energy, negative ions are stripped to become positive ions with different ion charge states due to electrons when passing through the electron stripping film, and only central ions are led out of the accelerator after being selected by a strong magnetic field of the accelerator along with the inversion of orbit curvature or obvious difference from a central orbit;
the position of the stripping film is a key factor for determining the extraction point of the proton beam, even if the rotation radius of specific energy is slightly changed, the extraction track of the stripped proton beam in a magnetic field is greatly changed, and when the cyclotron operates to extract the beam, the beam track corresponding to the initial position of the stripping film cannot be ensured to be opposite to the extraction window of the vacuum chamber, so that the stripping film position needs to be controlled through a stripping target system, the beam extraction track is corrected, the figure 2-position stripping target is arranged on a 16MeV novel medical cyclotron, and the stripping target is arranged on a schematic drawing of the extraction track of the cyclotron with the beam energy of 4Me extracted under the corresponding test working condition.
The main transmission mode of the stripping target provided by the application is composed of a sliding part driven by a screw pair and a swinging part driven by a connecting rod mechanism.
The screw rod pair consists of a magnetic fluid main shaft and a tin bronze sliding block, and the magnetic fluid main shaft is directly connected with the servo motor to convert rotary motion into linear motion.
The connecting rod mechanism is composed of a connecting rod B made of brass and a connecting rod A made of aluminum alloy, and the connecting rod B and the connecting rod A are respectively fixed on the connecting rod support and the tin bronze sliding block and are connected with each other through titanium alloy pins, so that linear motion is converted into plane rotation.
The stripping film is fixed on an aluminum alloy stripping film frame, is directly connected with a brass connecting rod and rotates along with the connecting rod.
And the connecting rod B and the connecting rod A are provided with insulated and beam measuring wires, so that the beam signal detection function is realized.
Through travel switch, realize the spacing function of stroke.
The beam measuring wire and the travel switch wire are led out through other reserved outlets of the vacuum chamber.
The integral sealing point comprises magnetic fluid sealing and vacuum chamber window cover plate sealing.
The application is suitable for the occasion that the beam extraction radius of the cyclotron is fixed, namely the extracted beam energy is fixed; the beam stripping point can be positioned in the middle of the magnetic field, and is suitable for occasions where the stripping point is far away from the window of the vacuum chamber;
simple structure, rapid design and manufacture, and is suitable for experimental occasions needing to temporarily change beam extraction energy, especially low energy.
A novel lift-off target for cyclotron beam extraction, comprising:
the fixing piece comprises a vacuum chamber window cover plate, a motor support connected to one side of the vacuum chamber window cover plate, and an aluminum alloy support connected to the other side of the vacuum chamber window cover plate;
further comprises:
the driving piece is connected with the fixing piece and used for driving the sliding piece to slide along a preset stroke;
the sliding piece is connected with the driving piece and is used for driving the swinging piece to swing so as to enable the stripping film to move, and then the beam extraction track is changed;
a swinging member connected with the sliding member, comprising: and the connecting rod assembly is connected with the sliding piece, and the peeling film frame is arranged at the end part of the connecting rod assembly.
The utility model discloses can effectively realize peeling off, survey beam, spacing, insulating multiple functions's under the condition has simplified peeling off target structure and realized peeling off fast and draw forth proton beam, this peeling off target simple structure, cost of manufacture are low, the preparation cycle is short, and then adapt to some special, experimental, temporary operating conditions, when required beam energy is lower like, the beam is peeled off the occasion that the point is far away from vacuum chamber wall distance but fixed.
Meanwhile, for the cyclotron with a fixed extraction position, the size of the connecting rod assembly can be obtained by knowing the beam stripping point and the installation position of the vacuum chamber, so that the manufacturing is completed in a short time, the mechanical structure is simple, faults are not easy to occur, and multiple functions such as stripping, beam measurement, limiting and insulation can be effectively realized.
The installation is convenient, the occupied space of the whole structure is small, the number of accessories is small, and the installation and the disassembly can be completed by a single person;
the assembly does not need to do extra gap avoidance to the magnetic yoke, the vacuum chamber or the magnetic poles, fully utilizes the gap between the magnetic poles, and increases the height of the stripping film to the greatest extent, so that the beam has higher contact probability with the stripping film, and the beam extraction efficiency is high.
The vacuum tightness is good, and the number of leak detection points is small;
the vacuum sealing surface of the stripping target only comprises magnetic fluid sealing and vacuum chamber cover plate sealing, so that the vacuum requirement of the cyclotron can be met.
The method is effectively applicable to the application occasions of the low beam energy cyclotron with larger distance between the beam stripping point and the vacuum chamber window.
The driving member includes:
the servo motor is arranged on the motor support;
the output end of the servo motor is provided with an output shaft, the output shaft is connected with a coupler, the coupler is connected with a magnetic fluid main shaft, and the magnetic fluid main shaft penetrates through the window cover plate and the aluminum alloy support frame.
The slider includes:
the screw rod is coaxially connected with the magnetic fluid main shaft;
the tin bronze sliding block is sleeved on the screw rod, and the stroke of the tin bronze sliding block is provided with a soft limit mode of a travel switch and a hard limit mode of a design bolt on a switch bracket;
the switch bracket is connected with the aluminum alloy support frame, and a notch is formed in the top of the switch bracket for the tin bronze sliding block to slide; the tin bronze sliding block extends to the outside of a notch formed in the top of the switch bracket and is connected with the connecting rod A;
when the tin bronze sliding block slides more smoothly, the side part of the tin bronze sliding block and the top of the switch bracket are provided with the notch inner wall to form a sliding groove, and the tin bronze sliding block and the top of the switch bracket are provided with the notch inner wall to slide in an adaptive manner.
And the travel switch is arranged on the travel switch bracket and used for limiting the sliding travel of the tin bronze sliding block.
The connecting rod assembly includes:
the connecting rod A is hinged with the tin bronze sliding block and is completed by a pin, and two copper idler wheels are arranged at the joint to fasten and assist the sliding block to move linearly;
the connecting rod B is hinged with the connecting rod A and is hinged through a pin, and the joint of the connecting rod A and the connecting rod B with the pin is insulated through a ceramic spacer;
one end of the connecting rod bracket is connected with the aluminum alloy supporting frame, and the other end of the connecting rod bracket is hinged with one end of the connecting rod B, which is far away from the connecting rod A;
and the stripping film frame is connected with one end of the connecting rod B, which is far away from the connecting rod A.
And a ceramic spacer bush and a ceramic gasket are arranged between the connecting rod support and the aluminum alloy support frame, and are insulated through the ceramic spacer bush and the ceramic gasket.
And a magnetic fluid sealing piece is also arranged in the aluminum alloy supporting frame.
A beam extraction method for a novel stripped target for cyclotron beam extraction, comprising:
step 1, mounting a stripping target and performing insulation treatment at the same time;
and 2, after the installation is finished, the output shaft is driven to rotate through the servo motor, the coupler drives the magnetic fluid main shaft to rotate, the screw rod is driven to rotate, the tin bronze sliding block is enabled to slide, the connecting rod A and the connecting rod B are driven to swing, the stripping film frame is driven to swing, the stripping film moves along with the stripping film frame, and the beam extraction track is changed.
When the stripping target is installed, the installation mode is influenced by the space outside the cyclotron, and the stripping target comprises:
when the reserved opening exists in the magnetic yoke at the outer side of the installation window, the stripping target can be integrally stretched into the window in the radial direction after the stripping target is installed in advance, and the stripping target is positioned and installed through the window cover plate of the vacuum chamber;
the installation method without reserved opening includes that when the magnetic yoke at the outer side of an installation window has no reserved opening, an aluminum alloy support frame, magnetic fluid, a screw rod, a travel switch and a vacuum chamber window cover plate are connected in advance, then the aluminum alloy support frame, the magnetic fluid, the screw rod, the travel switch and the vacuum chamber window cover plate are integrally installed in a radial extending mode from a vacuum chamber window, then a connecting rod A, a connecting rod B, a connecting rod support and a stripping film frame are installed in the vacuum chamber, and finally a servo motor is installed at the outer side of the vacuum chamber.
Wiring is carried out after the integral installation is completed, and the electric wires are led out through other reserved outlets of the vacuum chamber;
all parts which start to be in the stripping film direction from the aluminum alloy support frame are in a suspended state, and no direct contact exists on the surface of the magnetic pole;
after the installation is completed, the servo motor at the outer side of the vacuum chamber is fixed on the window cover plate of the vacuum chamber through a motor support, an output shaft of the motor is directly connected with the magnetic fluid main shaft through a coupler, and the magnetic fluid main shaft is coaxial with the screw rod and penetrates through the window cover plate of the vacuum chamber and the aluminum alloy support frame.
During insulation treatment, the joint of the connecting rod A and the connecting rod B pin is insulated by a ceramic spacer bush, and the connecting rod bracket and the aluminum alloy support frame are insulated by the ceramic spacer bush and a ceramic gasket;
and finally, the stripping film transmits the electric signals to the connecting rod B and the connecting rod support, and the beam measuring motor is connected to the connecting rod support.
Insulation principle:
the pin joint of the connecting rod A and the connecting rod B is insulated by a ceramic spacer bush, the connecting rod support and the aluminum alloy support frame are insulated by a ceramic spacer bush and a ceramic gasket, and finally the stripping film can conduct electric signals to the connecting rod B and the connecting rod support frame, and the beam measuring motor is connected to the connecting rod support frame.
The installation method comprises the following steps:
the installation mode is influenced by the space outside the cyclotron, if a reserved opening exists in the magnetic yoke outside the installation window, the stripping target can be integrally stretched into the window from the radial direction after the stripping target is installed in advance, and the stripping target can be installed through the positioning of the window cover plate of the vacuum chamber.
If the magnetic yoke at the outer side of the mounting window has no reserved opening, the aluminum alloy support frame, the magnetic fluid, the screw rod, the travel switch and the vacuum chamber window cover plate part can be connected in advance, then the vacuum chamber window is radially extended into the mounting as a whole, then the connecting rod A, the connecting rod B, the connecting rod support and the stripping film frame are arranged in the vacuum chamber, and finally the servo motor is arranged at the outer side of the vacuum chamber.
And wiring is carried out after the integral installation is completed, and the electric wires are led out through other reserved outlets of the vacuum chamber.
All parts from the aluminum alloy support frame to the inside are in a suspended state, and no direct contact exists on the surface of the magnetic pole.
The stripping film is a pure titanium film, the size is 16mm in height, 19mm in width and 1 mu m in thickness, and the stripping film is clamped between two stripping film frames made of aluminum alloy and fixed on the head of the connecting rod B through a fastening bolt, so that the stripping film can be conveniently detached and replaced.
The peel area after mounting was 14mm high and 15mm wide.
Description of working principle: the vacuum chamber outer side servo motor is fixed on the vacuum chamber window cover plate through a motor support, the motor output shaft is directly connected with the magnetic fluid main shaft through a coupler, and the magnetic fluid main shaft is coaxial with the screw rod and penetrates through the vacuum chamber window cover plate and the aluminum alloy support frame.
The servo motor works to drive the output shaft to rotate, the coupler drives the magnetic fluid main shaft to rotate, the screw rod is driven to rotate, the tin bronze sliding block is made to slide, the connecting rod A and the connecting rod B are driven to swing, the stripping film frame is driven to swing, the stripping film moves along with the stripping film frame, and the beam extraction track is changed.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present application within the scope of the technical concept of the present application, and these equivalent changes all fall within the scope of the present application.
Claims (10)
1. A novel lift-off target for cyclotron beam extraction, comprising:
the fixing piece comprises a vacuum chamber window cover plate, a motor support connected to one side of the vacuum chamber window cover plate, and an aluminum alloy support connected to the other side of the vacuum chamber window cover plate;
characterized by further comprising:
the driving piece is connected with the fixing piece and used for driving the sliding piece to slide along a preset stroke;
the sliding piece is connected with the driving piece and is used for driving the swinging piece to swing so as to enable the stripping film to move, and then the beam extraction track is changed;
a swinging member connected with the sliding member, comprising: and the connecting rod assembly is connected with the sliding piece, and the peeling film frame is arranged at the end part of the connecting rod assembly.
2. The novel stripping target for cyclotron beam extraction of claim 1, wherein: the driving member includes:
the servo motor is arranged on the motor support;
the output end of the servo motor is provided with an output shaft, the output shaft is connected with a coupler, the coupler is connected with a magnetic fluid main shaft, and the magnetic fluid main shaft penetrates through the window cover plate and the aluminum alloy support frame.
3. The novel stripping target for cyclotron beam extraction of claim 1, wherein: the slider includes:
the screw rod is coaxially connected with the magnetic fluid main shaft;
the tin bronze sliding block is sleeved on the screw rod;
the switch bracket is connected with the aluminum alloy support frame;
and the travel switch is arranged on the travel switch bracket and used for limiting the sliding travel of the tin bronze sliding block.
4. The novel stripping target for cyclotron beam extraction of claim 1, wherein: the connecting rod assembly includes:
the connecting rod A is hinged with the tin bronze sliding block;
the connecting rod B is hinged with the connecting rod A and is hinged through a pin, and the joint of the connecting rod A and the connecting rod B with the pin is insulated through a ceramic spacer;
one end of the connecting rod bracket is connected with the aluminum alloy supporting frame, and the other end of the connecting rod bracket is hinged with one end of the connecting rod B, which is far away from the connecting rod A;
and the stripping film frame is connected with one end of the connecting rod B, which is far away from the connecting rod A.
5. The novel stripping target for cyclotron beam extraction of claim 4, wherein: and a ceramic spacer bush and a ceramic gasket are arranged between the connecting rod support and the aluminum alloy support frame, and are insulated through the ceramic spacer bush and the ceramic gasket.
6. The novel stripping target for cyclotron beam extraction of claim 1, wherein: and a magnetic fluid sealing piece is also arranged in the aluminum alloy supporting frame.
7. A beam extraction method for a novel stripping target for cyclotron beam extraction, comprising:
step 1, mounting a stripping target and performing insulation treatment at the same time;
and 2, after the installation is finished, the output shaft is driven to rotate through the servo motor, the coupler drives the magnetic fluid main shaft to rotate, the screw rod is driven to rotate, the tin bronze sliding block is enabled to slide, the connecting rod A and the connecting rod B are driven to swing, the stripping film frame is driven to swing, the stripping film moves along with the stripping film frame, and the beam extraction track is changed.
8. The beam extraction method of the novel stripping target for beam extraction of the cyclotron according to claim 7, wherein the beam extraction method comprises the following steps: when the stripping target is installed, the installation mode is influenced by the space outside the cyclotron, and the stripping target comprises:
when the reserved opening exists in the magnetic yoke at the outer side of the installation window, the stripping target can be integrally stretched into the window in the radial direction after the stripping target is installed in advance, and the stripping target is positioned and installed through the window cover plate of the vacuum chamber;
the installation method without reserved opening includes that when the magnetic yoke at the outer side of an installation window has no reserved opening, an aluminum alloy support frame, magnetic fluid, a screw rod, a travel switch and a vacuum chamber window cover plate are connected in advance, then the aluminum alloy support frame, the magnetic fluid, the screw rod, the travel switch and the vacuum chamber window cover plate are integrally installed in a radial extending mode from a vacuum chamber window, then a connecting rod A, a connecting rod B, a connecting rod support and a stripping film frame are installed in the vacuum chamber, and finally a servo motor is installed at the outer side of the vacuum chamber.
9. The beam extraction method of the novel stripping target for beam extraction of the cyclotron according to claim 8, wherein the beam extraction method comprises the following steps: wiring is carried out after the integral installation is completed, and the electric wires are led out through other reserved outlets of the vacuum chamber;
all parts which start to be in the stripping film direction from the aluminum alloy support frame are in a suspended state, and no direct contact exists on the surface of the magnetic pole;
after the installation is completed, the servo motor at the outer side of the vacuum chamber is fixed on the window cover plate of the vacuum chamber through a motor support, an output shaft of the motor is directly connected with the magnetic fluid main shaft through a coupler, and the magnetic fluid main shaft is coaxial with the screw rod and penetrates through the window cover plate of the vacuum chamber and the aluminum alloy support frame.
10. The beam extraction method of the novel stripping target for beam extraction of the cyclotron according to claim 7, wherein the beam extraction method comprises the following steps: during insulation treatment, the joint of the connecting rod A and the connecting rod B pin is insulated by a ceramic spacer bush, and the connecting rod bracket and the aluminum alloy support frame are insulated by the ceramic spacer bush and a ceramic gasket;
and finally, the stripping film transmits the electric signals to the connecting rod B and the connecting rod support, and the beam measuring motor is connected to the connecting rod support.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310757182.6A CN116709627A (en) | 2023-06-26 | 2023-06-26 | Novel stripping target for beam extraction of cyclotron and beam extraction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117119667A (en) * | 2023-09-16 | 2023-11-24 | 北京核力同创科技有限公司 | Cyclotron target stripping device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117119667A (en) * | 2023-09-16 | 2023-11-24 | 北京核力同创科技有限公司 | Cyclotron target stripping device and method |
| CN117119667B (en) * | 2023-09-16 | 2024-03-12 | 北京核力同创科技有限公司 | Cyclotron target stripping device and method |
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