CN220067770U - Novel stripping target for beam extraction of cyclotron - Google Patents
Novel stripping target for beam extraction of cyclotron Download PDFInfo
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- CN220067770U CN220067770U CN202321623646.6U CN202321623646U CN220067770U CN 220067770 U CN220067770 U CN 220067770U CN 202321623646 U CN202321623646 U CN 202321623646U CN 220067770 U CN220067770 U CN 220067770U
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- connecting rod
- stripping
- piece
- vacuum chamber
- cyclotron
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- 238000000605 extraction Methods 0.000 title claims abstract description 45
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 28
- 239000011553 magnetic fluid Substances 0.000 claims description 23
- 229910000906 Bronze Inorganic materials 0.000 claims description 19
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 19
- 239000010974 bronze Substances 0.000 claims description 19
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000009413 insulation Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 17
- 150000002500 ions Chemical class 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000033001 locomotion Effects 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
- 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
Abstract
The utility model discloses a novel stripping target for beam extraction of a cyclotron, which 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 simplifies the stripping target structure to rapidly realize stripping and leading out proton beam under the condition of effectively realizing multiple functions of stripping, beam measurement, limiting, insulation and the like.
Description
Technical Field
The utility model relates to a stripping target, in particular to a novel stripping target for beam extraction of a cyclotron.
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 utility model aims to: a novel stripping target for cyclotron beam extraction is provided to address the above-identified problems with 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 simplifies the stripping target structure to rapidly realize stripping and leading out proton beam under the condition of effectively realizing multiple functions of stripping, beam measurement, limiting, insulation and the like.
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.
The beneficial effects are that: the utility model discloses a novel stripping target for beam extraction of a cyclotron, which is characterized in that a stripping film frame is driven to move by a swinging piece, and under the condition that multiple functions such as stripping, beam measurement, limiting and insulation can be effectively realized, the 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 utility model.
FIG. 2 is a schematic drawing of the extraction trajectory of a cyclotron after stripping by the stripped target beam of the present utility model.
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 utility model relates to a novel stripping target for cyclotron beam extraction, which 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 utility model 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 utility model 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 4, a motor support 2 connected to one side of the vacuum chamber window cover plate 4, and an aluminum alloy support frame 5 connected to the other side of the vacuum chamber window cover plate 4;
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: a link assembly connected to the slider, and a release film frame 14 provided at an end of the link assembly.
The utility model simplifies the stripping target structure to rapidly realize stripping and leading out proton beam under the condition of effectively realizing multiple functions of stripping, beam measurement, limiting, insulation and the like.
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:
a servo motor 1 mounted on the motor support 2;
the output end of the servo motor 1 is provided with an output shaft, the output shaft is connected with a coupler 3, the coupler 3 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 5.
The slider includes:
the screw rod 7 is coaxially connected with the magnetic fluid main shaft;
the tin bronze sliding block 8 is sleeved on the screw rod 7, and the stroke of the tin bronze sliding block 8 is provided with a soft limit mode of a stroke switch 9 and a hard limit mode of a design bolt on a switch bracket 10;
the switch bracket 10 is connected with the aluminum alloy support frame 5, and a notch is formed in the top of the switch bracket 10 for the tin bronze sliding block 8 to slide; the tin bronze sliding block 8 extends to the outside of a notch formed in the top of the switch bracket 10 and is connected with the connecting rod A11;
when the tin bronze sliding block 8 slides more smoothly, the side part of the tin bronze sliding block 8 and the top of the switch bracket 10 are provided with a groove opening inner wall provided with a sliding groove, and the tin bronze sliding block 8 and the top of the switch bracket 10 are provided with a groove opening inner wall in a matched sliding manner.
And the travel switch 9 is arranged on a support of the travel switch 9 and used for limiting the sliding travel of the tin bronze sliding block 8.
The connecting rod assembly includes:
the connecting rod A11 is hinged with the tin bronze sliding block 8 and is completed by a pin 15, and two copper rollers are arranged at the joint to fasten and assist the sliding block to move linearly;
the connecting rod B12 is hinged with the connecting rod A11, the hinging is completed through the pin 15, and the connecting parts of the connecting rod A11 and the connecting rod B12 and the pin 15 are insulated through a ceramic spacer;
one end of the connecting rod bracket 13 is connected with the aluminum alloy supporting frame 5, and the other end of the connecting rod bracket is hinged with one end of the connecting rod B12 far away from the connecting rod A11;
the peeling film frame 14 is connected with one end of the connecting rod B12 far away from the connecting rod A11.
A ceramic spacer bush and a ceramic gasket are arranged between the connecting rod support 13 and the aluminum alloy support frame 5, and are insulated through the ceramic spacer bush and the ceramic gasket.
And a magnetic fluid sealing piece 6 is also arranged in the aluminum alloy supporting frame 5.
Insulation principle:
the joint of the connecting rod A11 and the connecting rod B12 pin 15 is insulated by a ceramic spacer bush, the connecting rod support 13 and the aluminum alloy support frame 5 are insulated by a ceramic spacer bush and a ceramic gasket, and finally the stripping film can transmit electric signals to the connecting rod B12 and the connecting rod support 13, and the beam measuring motor is connected to the connecting rod support 13.
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 in the radial direction after the stripping target is installed in advance, and the stripping target can be positioned and installed through the window cover plate 4 of the vacuum chamber.
If the yoke outside the installation window has no reserved opening, the aluminum alloy support frame 5, the magnetic fluid, the screw rod 7, the travel switch 9 and the vacuum chamber window cover plate 4 can be connected in advance, then the aluminum alloy support frame is integrally installed by extending into the vacuum chamber window in the radial direction, then the connecting rod A11, the connecting rod B12, the connecting rod support 13 and the stripping film frame are installed in the vacuum chamber, and finally the servo motor 1 is installed outside 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.
Wherein all parts from the aluminum alloy support frame 5 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 B12 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 servo motor 1 at the outer side of the vacuum chamber is fixed on the window cover plate 4 of the vacuum chamber through a motor support 2, an output shaft of the motor is directly connected with a magnetic fluid main shaft through a coupler 3, and the magnetic fluid main shaft is coaxial with a screw rod 7 and penetrates through the window cover plate 4 of the vacuum chamber and an aluminum alloy support frame 5.
The servo motor 1 works to drive the output shaft to rotate, the coupler 3 drives the magnetic fluid main shaft to rotate, the screw rod 7 is driven to rotate, the tin bronze sliding block 8 is made to slide, the connecting rod A11 and the connecting rod B12 are driven to swing, the stripping film frame 14 is driven to swing, the stripping film moves along with the stripping film, and the beam extraction track is changed.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model 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 utility model within the scope of the technical concept of the present utility model, and these equivalent changes all fall within the scope of the present utility model.
Claims (6)
1. A novel lift-off target for cyclotron beam extraction, comprising:
the fixing piece comprises a vacuum chamber window cover plate (4), a motor support (2) connected to one side of the vacuum chamber window cover plate (4), and an aluminum alloy support frame (5) connected to the other side of the vacuum chamber window cover plate (4);
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: a connecting rod assembly connected with the sliding piece and a stripping film frame (14) 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:
a servo motor (1) mounted on the motor support (2);
the output end of the servo motor (1) is provided with an output shaft, the output shaft is connected with a coupler (3), the coupler (3) 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 (5).
3. The novel stripping target for cyclotron beam extraction of claim 1, wherein: the slider includes:
the screw rod (7) is coaxially connected with the magnetic fluid main shaft;
a tin bronze sliding block (8) sleeved on the screw rod (7);
the switch bracket (10) is connected with the aluminum alloy support frame (5);
and the travel switch (9) is arranged on the travel switch (9) bracket and used for limiting the sliding travel of the tin bronze sliding block (8).
4. The novel stripping target for cyclotron beam extraction of claim 1, wherein: the connecting rod assembly includes:
the connecting rod A (11) is hinged with the tin bronze sliding block (8);
the connecting rod B (12) is hinged with the connecting rod A (11) and is hinged through a pin (15), and the connecting parts of the connecting rod A (11) and the connecting rod B (12) and the pin (15) are insulated through a ceramic spacer;
one end of the connecting rod bracket (13) is connected with the aluminum alloy supporting frame (5), and the other end of the connecting rod bracket is hinged with one end of the connecting rod B (12) far away from the connecting rod A (11);
the stripping film frame (14) is connected with one end of the connecting rod B (12) far away from the connecting rod A (11).
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 part of the connecting rod bracket (13) and the aluminum alloy supporting frame (5), 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 (6) is also arranged in the aluminum alloy supporting frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321623646.6U CN220067770U (en) | 2023-06-26 | 2023-06-26 | Novel stripping target for beam extraction of cyclotron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321623646.6U CN220067770U (en) | 2023-06-26 | 2023-06-26 | Novel stripping target for beam extraction of cyclotron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220067770U true CN220067770U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321623646.6U Active CN220067770U (en) | 2023-06-26 | 2023-06-26 | Novel stripping target for beam extraction of cyclotron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220067770U (en) |
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2023
- 2023-06-26 CN CN202321623646.6U patent/CN220067770U/en active Active
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