Stripping target device of cyclotron and cyclotron system

Abstract

The invention relates to the technical field of cyclotrons and discloses a stripping target device of a cyclotron and a cyclotron system.The stripping target device of the cyclotron comprises a cantilever and a target membrane assembly, the cantilever is used for stretching into a vacuum chamber of the cyclotron, and the free end of the cantilever is provided with an installation space; the target film assembly is rotatably arranged in the installation space, and a heat exchange runner used for containing a cooling medium is arranged in the target film assembly. The stripping target device can overcome the technical problem that the temperature of the stripping film and the stripping film support is too high, and the cooling medium can flow into the heat exchange runner, so that heat of the target film assembly is taken away, the temperature of the target film assembly is reduced, and deformation or damage of the target film assembly caused by too high temperature of the target film assembly is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cyclotron accelerators, in particular to a stripping target device of a cyclotron accelerator and a cyclotron accelerator system. Background Art

[0002] In recent years, cyclotrons have been increasingly used in isotope production, cancer treatment, and other fields, among which compact cyclotrons account for a large proportion. Compact cyclotrons have the advantages of small equipment footprint and stable performance, but their compact structure and small magnetic pole gap place stringent requirements on the size of each component inside the accelerator.

[0003] In a cyclotron accelerator, negative hydrogen or heavy ion particles can be accelerated by stripping and extraction. After the particles are accelerated to the specified energy, they pass through a stripping membrane at a specified position. After a certain amount of charge is stripped off, the charge-to-mass ratio of the particles changes, and the trajectory of the particles in the magnetic field is deflected. The particle beam will be extracted along the extraction track. Therefore, whether the stripping membrane accurately reaches the designed stripping point is the key to whether the stripping and extraction beam can be achieved. It is also one of the key points for whether the accelerator can achieve its design and performance.

[0004] In the process of stripping and extracting the beam, a large amount of heat and current will be generated when the beam bombards the stripping film. The stripping film will be damaged or deformed when the temperature is too high, and a new stripping film can only be replaced. More likely, the heat on the stripping film is transferred to the stripping film bracket and other structures. The heat will cause the stripping film bracket and other structures to deform or damage, causing the accelerator to fail to operate normally. The existing technical solution "A cyclotron stripping target device and method", its patent number: CN117119667A, does not even have water cooling, and the heat is concentrated in part of the target disk, which will shorten the life of the carbon film. Therefore, it is necessary to water-cool the rotating target head of the stripping target. However, for the horizontally arranged stripping target device, the target disk rotation axis is 90 degrees to the cantilever, and it is difficult to achieve water cooling of the target disk using ordinary technical solutions (rotating seals are required, the structure is complex, and the reliability is poor).

[0005] In the prior art, how to lower the temperature of the stripping film and the stripping film support is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the embodiments of the present invention provide a cyclotron stripping target device and a cyclotron system, wherein the cyclotron stripping target device can overcome the technical problem of excessive temperature of the stripping film and the stripping film support, and the cooling medium can flow into the heat exchange flow channel to take away the heat of the target film assembly, reduce the temperature of the target film assembly, and avoid deformation or damage of the target film assembly due to excessive temperature of the target film assembly.

[0007] A cyclotron target stripping device according to an embodiment of the present invention comprises:

[0008] A cantilever, the cantilever is used to extend into the vacuum chamber of the cyclotron, and the free end of the cantilever extending into the vacuum chamber of the cyclotron has an installation space;

[0009] The target membrane assembly is provided with a heat exchange channel for accommodating a cooling medium.

[0010] In the stripping target device of the cyclotron, the cooling medium can flow into the heat exchange flow channel to take away the heat of the target membrane component, reduce the temperature of the target membrane component, and avoid deformation or damage of the target membrane component due to excessive temperature.

[0011] Optionally, the cyclotron stripping target device further comprises:

[0012] A heat exchange component, the heat exchange component includes a first heat exchange tube and a second heat exchange tube located in the installation space, the inlet of the first heat exchange tube is connected to the heat exchange channel, and the outlet of the second heat exchange tube is connected to the heat exchange channel.

[0013] Optionally, the free end of the cantilever has two mounting pieces parallel to each other, the two mounting pieces are arranged at intervals, and the mounting space is defined between the two mounting pieces;

[0014] The target film assembly is located in the installation space and is rotatably arranged on the installation sheet;

[0015] The target membrane assembly comprises:

[0016] A rotating shaft, both ends of which are rotatably mounted on the two mounting plates, and the rotating shaft is orthogonal to the mounting plates;

[0017] A target film turntable, wherein the target film turntable is mounted on the rotating shaft and is located in the installation space;

[0018] A first gear is installed on the rotating shaft, the first gear is connected to the target film turntable, and the heat exchange channel is located inside the first gear.

[0019] Optionally, the first heat exchange tube and the second heat exchange tube are both spirally arranged with the center line of the rotating shaft as the axis;

[0020] The first heat exchange tube has elasticity, and the second heat exchange tube has elasticity;

[0021] Wherein, the outlet of the first heat exchange tube is connected to the mounting plate, and the inlet of the second heat exchange tube is connected to the mounting plate.

[0022] Optionally, the first heat exchange tube is spirally arranged in a plane parallel to the mounting plate;

[0023] The second heat exchange tube is spirally arranged in a plane parallel to the mounting plate.

[0024] Optionally, the spiral plane of the first heat exchange tube and the spiral plane of the second heat exchange tube are arranged at intervals.

[0025] Optionally, the first heat exchange tube is provided in plurality, wherein the spiral planes of two adjacent first heat exchange tubes are arranged at intervals;

[0026] There are a plurality of the second heat exchange tubes, wherein the spiral planes of two adjacent second heat exchange tubes are arranged at intervals.

[0027] Optionally, a straight groove is provided on the cantilever, the straight groove extends to the mounting plate in the length direction of the cantilever, the mounting plate is provided with a support platform located in the mounting space, the support platform is provided with a rotation hole orthogonal to the mounting plate, and the rotation hole is connected to the straight groove;

[0028] The stripping target device of the cyclotron further includes a rotating assembly, and the rotating assembly includes:

[0029] A transmission member, the transmission member comprises a linkage rod, a second gear and a worm wheel, the second gear and the worm wheel are respectively arranged at two ends of the linkage rod, and the linkage rod is rotatably arranged in the rotating hole, the second gear and the worm wheel are respectively located at two ends of the support platform, the worm wheel extends into the straight groove, and the second gear is meshed with the first gear;

[0030] a first worm, the first worm extending into the straight groove in the length direction of the cantilever and meshing with the worm wheel;

[0031] A first motor is installed on the cantilever, and an output shaft of the first motor is connected to the first worm.

[0032] Optionally, the cyclotron stripping target device further comprises:

[0033] At least one carbon film support, at least one of the carbon film supports is mounted on the target film turntable.

[0034] A cyclotron system according to another embodiment of the present invention includes the above-mentioned cyclotron stripping target device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional schematic diagram of a stripping target device in a specific embodiment of the present invention.

[0036] Figure 2 It is a schematic diagram of the assembly between the target membrane component and the rotating component in a specific embodiment of the present invention.

[0037] Figure 3 yes Figure 2 Partial schematic diagram of A in the figure.

[0038] Figure 4 It is a schematic diagram of the assembly between the first gear and the elastic component in a specific embodiment of the present invention.

[0039] Figure 5 It is a schematic axial cross-sectional view of the first gear in a specific embodiment of the present invention.

[0040] Figure markings: 1000-peeling target device, 100-cantilever, 110-free end, 120-mounting plate, 130-mounting space, 140-straight groove, 150-support platform, 200-target film assembly, 210-rotating shaft, 220-target film turntable, 230-first gear, 231-heat exchange channel, 300-elastic assembly, 310-first heat exchange tube, 320-second heat exchange tube, 400-rotating assembly, 410-transmission member, 411-linkage rod, 412-second gear, 413-worm gear, 420-first worm, 430-first motor, 500-carbon film bracket. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0042] The following describes the cyclotron target stripping device 1000 and the cyclotron system according to the embodiment of the present invention with reference to the accompanying drawings. Figures 1 to 5 As shown, the cyclotron stripping target device 1000 according to the embodiment of the present invention includes a cantilever 100 , a target film assembly 200 and an elastic assembly 300 .

[0043] The cantilever 100 is used to extend into the vacuum chamber of the cyclotron. The free end 110 of the cantilever 100 extending into the vacuum chamber of the cyclotron has two parallel mounting plates 120. The two mounting plates 120 are arranged at intervals and define a mounting space 130 between the two mounting plates 120. The target membrane assembly 200 is rotatably disposed on the mounting plate 120 and is located in the mounting space 130. A heat exchange channel 231 for accommodating a cooling medium is provided in the target membrane assembly 200.

[0044] According to the stripping target device 1000 in the specific embodiment of the present invention, the cooling medium can flow into the heat exchange channel 231, thereby taking away the heat of the target membrane assembly 200, reducing the temperature of the target membrane assembly 200, and avoiding the target membrane assembly 200 being deformed or damaged due to excessive temperature.

[0045] like Figures 1 to 5 As shown, in order to make the technical solution of the present application easier to understand, the technical solution of the present application is described in more detail below with reference to a specific embodiment of the stripping target device 1000.

[0046] In some specific embodiments, Figure 1 As shown, the free end 110 of the cantilever 100 can extend into the vacuum chamber so that the beam in the vacuum chamber can bombard the carbon film on the free end 110. The free end 110 of the cantilever 100 has two parallel mounting pieces 120, which are arranged at intervals and define a mounting space 130 between the two mounting pieces 120. The two mounting pieces 120 are mainly for facilitating the installation of the target film assembly 200.

[0047] In some specific embodiments, Figure 1 As shown, a straight groove 140 is provided on the cantilever 100, and the straight groove 140 extends to the mounting plate 120 in the length direction of the cantilever 100, and a first worm 420 is installed in the straight groove 140, and the first worm 420 can rotate in the straight groove 140. In addition, by installing the first worm 420 in the straight groove 140, a larger carbon film holder 500 can be obtained in a limited space size, which is more conducive to the stripping and extraction of the beam.

[0048] In some specific embodiments, Figure 1 As shown, the mounting plate 120 is provided with a support platform 150 located in the mounting space 130, and the support platform 150 is provided with a rotation hole orthogonal to the mounting plate 120, and the rotation hole is connected to the straight groove 140. Specifically, a transmission member 410 can be installed on the support platform 150, and a linkage rod 410 in the transmission member 410 is adapted in the rotation hole, wherein the linkage rod 410 can rotate relative to the support platform 150.

[0049] In some specific embodiments, Figure 1 As shown, the target membrane assembly 200 is rotatably disposed on the mounting plate 120 and is located in the mounting space 130, and a heat exchange flow channel for accommodating a cooling medium is provided in the target membrane assembly 200. Specifically, the cooling medium can flow into the heat exchange flow channel 231, thereby taking away the heat of the target membrane assembly 200, reducing the temperature of the target membrane assembly 200, and preventing the target membrane assembly 200 from being deformed or damaged due to excessive temperature of the target membrane assembly 200.

[0050] In some specific embodiments, Figure 1As shown, the target film assembly 200 includes a rotating shaft 210, a target film turntable 220 and a first gear 230. Multiple carbon films can be installed on the target film assembly 200, and the target film assembly 200 can drive the multiple carbon films to rotate. Under normal operation, the carbon film will be damaged. The target film assembly 200 can rotate other carbon films to the area bombarded by the beam to replace the previously damaged carbon film.

[0051] In some specific embodiments, Figures 1 to 5 As shown, both ends of the rotating shaft 210 are rotatably mounted on two mounting plates 120, respectively, the rotating shaft 210 is orthogonal to the mounting plates 120, the target film turntable 220 is mounted on the rotating shaft 210, the target film turntable 220 is located in the mounting space 130, and the target film turntable 220 can rotate on the free end 110 of the cantilever 100. The first gear 230 is mounted on the rotating shaft 210, the first gear 230 is connected to the target film turntable 220, and the target film turntable 220 can be driven to rotate by rotating the first gear 230.

[0052] In some specific embodiments, Figure 4 and Figure 5 As shown, a heat exchange channel 231 for accommodating a cooling medium is provided inside the first gear 230, that is, the heat exchange channel 231 is located inside the first gear 230, and the cooling medium can flow in the heat exchange channel 231, so as to perform heat exchange on the first gear 230 and indirectly perform heat exchange on the target film turntable 220, that is, the temperature of the first gear 230 and the target film turntable 220 can be effectively reduced, thereby reducing the temperature of the carbon film, avoiding deformation or damage caused by excessive temperature of the first gear 230, the target film turntable 220 and the carbon film, and extending the service life.

[0053] In some specific embodiments, Figure 5 As shown, the shape of the heat exchange channel 231 can be circular.

[0054] In some specific embodiments, Figure 1 and Figure 2 As shown, at least one carbon film holder 500 is mounted on the target film turntable 220. Specifically, the carbon film can be mounted on the target film turntable 220 through the carbon film holder 500.

[0055] In some specific embodiments, Figure 1 and Figure 2 As shown, the rotating assembly 400 includes a transmission member 410 and a first worm 420. Specifically, by rotating the first worm 420, the transmission member 410 is driven to rotate, thereby driving the target film assembly 400 to rotate.

[0056] In some specific embodiments, Figures 1 to 3As shown, the transmission member 410 includes a linkage rod 411, a second gear 412 and a worm wheel 413. The second gear 412 and the worm wheel 413 are respectively arranged at the two ends of the linkage rod 411, and the linkage rod 411 is rotatably arranged in the rotating hole. The second gear 412 and the worm wheel 412 are respectively located at the two ends of the support platform 150. The worm wheel 412 extends into the straight groove 140, and the second gear 412 is meshed with the first gear 230. Specifically, the worm wheel 412 is meshed with the first worm 420, and the worm wheel 412 is driven to rotate by rotating the first worm 420. The linkage rod 411, the second gear 412 and the worm wheel 413 are a whole, that is, the worm wheel 412 rotates synchronously with the second gear 412, and the second gear 412 is meshed with the first gear 230, so that the first gear 230 rotates. Among them, the way to rotate the first worm 420 can be manual, or the first worm 420 can be driven to rotate by a motor.

[0057] In some specific embodiments, Figures 1 to 3 As shown, the first motor 430 is mounted on the cantilever 100, and the output shaft of the first motor 430 is connected to the first worm 420. Specifically, by controlling the rotation of the first motor 430, the rotation angle of the first worm 420 can be controlled, and the rotation angles of the worm wheel 412, the second gear 412, the first gear 230 and the target film turntable 220 can be indirectly controlled.

[0058] In some specific embodiments, Figures 1 to 4 As shown, the elastic component 300 includes a first heat exchange tube 310 and a second heat exchange tube 320 located in the installation space 130, the inlet of the first heat exchange tube 310 is connected to the heat exchange channel 231, and the outlet of the second heat exchange tube 320 is connected to the heat exchange channel 231. Specifically, the cooling medium can enter the heat exchange channel 231 through the first heat exchange tube 310, and then flow out through the second heat exchange tube 320, thereby taking away the heat of the target membrane assembly 200.

[0059] In some specific embodiments, Figures 1 to 4As shown, the first heat exchange tube 310 and the second heat exchange tube 320 are both spirally arranged with the center line of the rotating shaft 210 as the axis, the first heat exchange tube 310 is elastic, the second heat exchange tube 320 is elastic, the outlet of the first heat exchange tube 310 is connected to the mounting plate 120, and the inlet of the second heat exchange tube 320 is connected to the mounting plate 120, that is, the first heat exchange tube 310 and the second heat exchange tube 320 are both connected between the first gear 230 and the mounting plate 120, which can convert the rotary seal into a static seal, greatly simplifying the design and processing difficulty, and also improving the reliability of the seal. At the same time, the spirally arranged first heat exchange tube 310 and the second heat exchange tube 320 can both provide a certain torque to the first gear 230, thereby improving the repeatability of the transmission of the first gear 230. In addition, the first heat exchange tube 310 and the second heat exchange tube 320 can exchange heat with the first gear 230 and indirectly exchange heat with the target film turntable 220, that is, the temperature of the first gear 230 and the target film turntable 220 can be effectively reduced, thereby reducing the temperature of the carbon film, avoiding deformation or damage caused by excessive temperature of the first gear 230, the target film turntable 220 and the carbon film, and extending the service life.

[0060] In some specific embodiments, Figures 1 to 4 As shown, the first heat exchange tube 310 is spirally arranged in a plane parallel to the mounting plate 120 , that is, the first heat exchange tube 310 can have a function similar to a “clockwork” to provide a certain torque to the first gear 230 .

[0061] In some specific embodiments, Figures 1 to 4 As shown, the second heat exchange tube 320 is spirally arranged in a plane parallel to the mounting plate 120 , and the second heat exchange tube 320 may have a function similar to a “spring” to provide a certain torque to the first gear 230 .

[0062] In some specific embodiments, Figures 1 to 4 As shown, the spiral plane of the first heat exchange tube 310 and the spiral plane of the second heat exchange tube 320 are arranged at an interval, which can avoid interference between the first heat exchange tube 310 and the second heat exchange tube 320.

[0063] In some specific embodiments, Figures 1 to 4 As shown, a plurality of first heat exchange tubes 310 are provided, which can provide a greater torque to the first gear 230. At the same time, the plurality of first heat exchange tubes 310 can also accelerate the flow of the cooling medium and improve the heat exchange efficiency of the cooling medium to the first gear 230. The spiral planes of two adjacent first heat exchange tubes 310 are arranged at intervals, which can avoid interference between the two adjacent first heat exchange tubes 310.

[0064] In some specific embodiments, Figures 1 to 4As shown, there are multiple second heat exchange tubes 320, which can provide a larger torque to the first gear 230. At the same time, multiple second heat exchange tubes 320 can also speed up the flow of the cooling medium and improve the heat exchange efficiency of the cooling medium to the first gear 230. The spiral planes of two adjacent second heat exchange tubes 320 are arranged at intervals to avoid interference between the two adjacent second heat exchange tubes 320.

[0065] In some specific embodiments, a cyclotron system includes the above-described stripping target apparatus 1000 .

[0066] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A cyclotron target stripping device, characterized in that: include: A cantilever, the cantilever is used to extend into the vacuum chamber of the cyclotron, and the free end of the cantilever extending into the vacuum chamber of the cyclotron has an installation space; The target membrane assembly is provided with a heat exchange channel for accommodating a cooling medium.

2. The cyclotron target stripping device according to claim 1, characterized in that: Also includes: A heat exchange component, the heat exchange component includes a first heat exchange tube and a second heat exchange tube located in the installation space, the inlet of the first heat exchange tube is connected to the heat exchange channel, and the outlet of the second heat exchange tube is connected to the heat exchange channel.

3. The cyclotron target stripping device according to claim 2, characterized in that: The free end of the cantilever has two mounting plates parallel to each other, the two mounting plates are arranged at intervals, and the mounting space is defined between the two mounting plates; The target film assembly is located in the installation space and is rotatably arranged on the installation sheet; The target membrane assembly comprises: A rotating shaft, both ends of which are rotatably mounted on the two mounting plates, and the rotating shaft is orthogonal to the mounting plates; A target film turntable, wherein the target film turntable is mounted on the rotating shaft and is located in the installation space; A first gear is installed on the rotating shaft, the first gear is connected to the target film turntable, and the heat exchange channel is located inside the first gear.

4. The cyclotron target stripping device according to claim 3, characterized in that: The first heat exchange tube and the second heat exchange tube are both spirally arranged with the center line of the rotating shaft as the axis; The first heat exchange tube has elasticity, and the second heat exchange tube has elasticity; Wherein, the outlet of the first heat exchange tube is connected to the mounting plate, and the inlet of the second heat exchange tube is connected to the mounting plate.

5. The cyclotron target stripping device according to claim 2, characterized in that: The first heat exchange tube is spirally arranged in a plane parallel to the mounting plate; The second heat exchange tube is spirally arranged in a plane parallel to the mounting plate.

6. The cyclotron target stripping device according to claim 5, characterized in that: The spiral plane of the first heat exchange tube and the spiral plane of the second heat exchange tube are arranged at intervals.

7. The cyclotron target stripping device according to claim 4, characterized in that: There are a plurality of the first heat exchange tubes, wherein the spiral planes of two adjacent first heat exchange tubes are arranged at intervals; There are a plurality of the second heat exchange tubes, wherein the spiral planes of two adjacent second heat exchange tubes are arranged at intervals.

8. The cyclotron stripping target device according to any one of claims 1 to 7, characterized in that: The cantilever is provided with a straight groove, the straight groove extends to the mounting plate in the length direction of the cantilever, the mounting plate is provided with a support platform located in the mounting space, the support platform is provided with a rotation hole orthogonal to the mounting plate, and the rotation hole is connected to the straight groove; The stripping target device of the cyclotron further includes a rotating assembly, and the rotating assembly includes: A transmission member, the transmission member comprises a linkage rod, a second gear and a worm wheel, the second gear and the worm wheel are respectively arranged at two ends of the linkage rod, and the linkage rod is rotatably arranged in the rotating hole, the second gear and the worm wheel are respectively located at two ends of the support platform, the worm wheel extends into the straight groove, and the second gear is meshed with the first gear; a first worm, the first worm extending into the straight groove in the length direction of the cantilever and meshing with the worm wheel; A first motor is installed on the cantilever, and an output shaft of the first motor is connected to the first worm.

9. The cyclotron stripping target device according to any one of claims 1 to 7, characterized in that: Also includes: At least one carbon film support, at least one of the carbon film supports is mounted on the target film turntable.

10. A cyclotron system, characterized in that: A stripping target device comprising a cyclotron according to any one of claims 1-9.

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