A flexible adaptive ion beam duct

Abstract

This invention belongs to the field of accelerator technology and relates to a flexible adaptive ion beam guide tube, comprising: a plurality of guide tube units connected sequentially along an axial direction, each guide tube unit being able to move relative to adjacent guide tube units by a preset angle; each guide tube unit includes at least one pair of opposing guide electrodes, used to form a self-organized guiding electric field when interacting with the ion beam, so that the ion beam forms a preset angle with the direction of the incident ions and enters the next guide tube unit; the guide electrodes of adjacent guide tube units are connected through a resistor network. This invention achieves flexible ion beam transmission, enabling high-energy (above 1 keV / q) and high-current (above 1 nA) ion beams to be passively transmitted along arbitrarily curved paths in space, while the outgoing beam maintains its original energy and charge state.

Description

Technical Field

[0001] This invention relates to a flexible, adaptive ion beam guide tube, belonging to the field of accelerator technology. Background Technology

[0002] Ion beams play a unique role in current and future scientific research, advanced manufacturing, and tumor treatment. Traditionally, ion beam transmission consists of rigid vacuum tubes and fixed electromagnetic components (such as deflecting magnets and electrostatic lenses), along with their power supply and control system. This rigid transmission system is bulky, complex, and expensive. When it's necessary to change the beam direction or irradiate the target area, either the irradiated object needs to be moved, or the entire massive beam line terminal needs to be rotated, which is inflexible. For example, in ion beam cancer treatment, to irradiate tumors from different angles, a rotating gantry weighing hundreds of tons is required, which greatly limits its widespread adoption and application. Furthermore, many liquid or liquid-containing samples cannot be flipped; when irradiating the bottom without igniting the top, an upward-facing ion beam is necessary; conversely, the reverse is also true. Therefore, how to achieve a beam capable of transmitting high energy (1keV / q The development of high-current (above 1 nA) ion beams and flexible ion beam guide tubes is a major technical challenge that urgently needs to be solved in this field. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a flexible adaptive ion beam guide tube, suitable for applications requiring flexible guidance and delivery of ion beams. This design enables the ion beam guide tube to freely bend and dynamically adjust in space, solving the problem that traditional rigid beam lines cannot flexibly change direction.

[0004] To achieve the above objectives, the present invention proposes the following technical solution: a flexible adaptive ion beam catheter, comprising: a plurality of catheter units connected sequentially along the axial direction, each catheter unit being able to move relative to adjacent catheter units by a preset angle; each catheter unit including at least a pair of opposing guide electrodes for forming a self-organized guide electric field when interacting with the ion beam, so that the ion beam forms a preset angle with the direction of the incident ions and enters the next catheter unit; the guide electrodes of adjacent catheter units are connected through a resistor network and ground potential.

[0005] Furthermore, the surface of the guide electrode is treated to form an anti-sputtering surface capable of suppressing secondary ion sputtering.

[0006] Furthermore, the method for treating the anti-sputtering surface is to set a deep groove structure on the surface of the guide electrode, or to set a porous metal structure on the surface of the guide electrode, or to set a micron or nano-scale three-dimensional morphology on the surface of the guide electrode.

[0007] Furthermore, the deep groove structure is at a preset angle to the direction of the incident ions.

[0008] Furthermore, the resistor network includes a first resistor and a second resistor. The guide electrodes of adjacent catheter units are connected through the first resistor to simulate the conduction of charge along the ion beam catheter axis. Each guide electrode is grounded through the second resistor to simulate the leakage of charge to the outside of the ion beam catheter. The resistance values ​​of the first resistor and the second resistor are different.

[0009] Furthermore, the resistance values ​​of the first and second resistors are not affected by ion irradiation. By optimizing the resistance values ​​of the first and second resistors, the establishment speed and region of the self-organized guiding electric field can be adapted to ion beams of different energies and current intensities.

[0010] Furthermore, the catheter unit includes an insulating frame, which includes an electrode fixing module and a connecting module. The electrode fixing module is used to fix the guide electrode. The electrode fixing module is annular, and its annular circumference is wavy, so that a pair of guide electrodes are disposed opposite to each other on it. The connecting module is used to connect adjacent catheter units.

[0011] Furthermore, the guide electrodes of adjacent catheter units are arranged horizontally parallel or perpendicular to each other.

[0012] Furthermore, a dynamic vacuum seal is achieved between adjacent conduit units using sealing rings.

[0013] Furthermore, the ion beam guide tube is disposed in a vacuum stainless steel corrugated tube.

[0014] The technical solution of the present invention has at least the following technical effects or advantages: 1. This invention realizes flexible transmission of ion beams, enabling high-energy (above 1 keV / q) and high-current (above 1 nA) ion beams to be passively transmitted along any curved path in space, while the emitted beam maintains its original energy and charge state.

[0015] 2. This invention achieves free bending and dynamic adjustment of the ion beam guide tube in space by decomposing a rigid tube into multiple interconnected flexible units, solving the problem of the inability of traditional rigid beam lines to flexibly change direction. By employing a guide electrode with a sputter-resistant surface and an external stabilizing resistor network, this invention fundamentally solves the two core problems of premature electric field saturation and conductivity drift caused by irradiation in traditional insulated guide tubes. According to preliminary experiments, the guiding potential difference can be increased from tens of volts to over 1000 volts, and the guiding ion energy can be increased to 100 keV / q The stable directional flow intensity has been increased to over 386 nA, which is 2-3 orders of magnitude higher than the current world's highest level.

[0016] 3. This invention uses metal or alloy materials to make the guide electrode and uses precision resistors to build a resistance network, so that the electrical characteristics of the conduit are completely determined by the design and are not affected by factors such as ion irradiation and vacuum degree changes, and have extremely high stability and repeatability.

[0017] 4. The conduit itself is a passive device, which does not require a complex power supply and control system, greatly simplifying the structure of the beam transmission line. Attached Figure Description

[0018] Figure 1 Figure (a) is a schematic diagram of the insulating frame of the in-plane freely bending ion beam conduit structure in one embodiment of the present invention, Figure (b) is a schematic diagram of a single insulating frame, Figure (c) is a schematic diagram of the electrode structure, Figure (d) is a connection diagram of two insulating frames, and Figure (d) is a connection diagram of the sides of two insulating frames. Figure 2 This is a schematic diagram of an in-plane freely bending ion beam guide tube structure according to an embodiment of the present invention; Figure 3 Figure (a) is a schematic diagram of the insulating frame of a three-dimensional spatially free-bending ion beam conduit structure in one embodiment of the present invention. Figure (b) is a schematic diagram of a single insulating frame, Figure (c) is a connection diagram of two insulating frames, and Figure (d) is a connection diagram of the sides of two insulating frames. Figure 4 Figure (a) is a schematic diagram of a three-dimensional spatially free-bending ion beam conduit structure in one embodiment of the present invention, and Figure (b) is a cross-sectional view of two adjacent insulating frames in the ion beam conduit. Figure 5 Figure (a) is a schematic diagram of the 3D printed flexible small-aperture ion beam conduit structure in one embodiment of the present invention, and Figure (b) is a schematic diagram of the structure of each layer of the ion beam conduit. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention is described in detail through specific embodiments. However, it should be understood that the specific embodiments are provided only for a better understanding of the present invention and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terminology used is for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] To address the two core challenges of premature electric field saturation and conductivity drift caused by irradiation in traditional insulated ion beam conduits, this invention proposes a flexible, adaptive ion beam conduit, comprising: several conduit units connected sequentially along the axial direction, each conduit unit capable of moving at a predetermined angle relative to adjacent conduit units; each conduit unit includes at least one pair of opposing guide electrodes, used to form a self-organized guiding electric field upon interaction with the ion beam, ensuring the ion beam forms a predetermined angle with the direction of the incident ions before entering the next conduit unit; the guide electrodes of adjacent conduit units are connected via a resistor network. This invention achieves flexible ion beam transmission, enabling high-energy (above 1 keV / q) and high-current (above 1 nA) ion beams to be passively transmitted along arbitrarily curved paths in space, while the outgoing beam maintains its original energy and charge state. The invention will be described in detail below with reference to the accompanying drawings.

[0021] Example 1 This embodiment discloses a flexible adaptive ion beam conduit, which is suitable for scenarios requiring flexible guidance and delivery of ion beams, such as ion beam therapy, advanced manufacturing, materials analysis, and space irradiation simulation.

[0022] like Figure 1 and Figure 2 As shown, the incident end of the adaptive ion beam guide tube is connected to the incident collimator. After collimation, the ion beam enters the ion beam guide tube. The exit end of the ion beam guide tube is connected to an electrostatic deflection plate for collecting and detecting the ion beam. The ion beam guide tube is housed within a vacuum stainless steel bellows.

[0023] In this embodiment, the ion beam conduit includes several conduit units connected sequentially along the axial direction, i.e., the conduit units are connected in series. The number of conduit units is multiple, i.e., two or more, preferably 40 in this embodiment, but not limited thereto. The conduit units are independent of each other. The ion beam conduit can continuously and controllably bend in a plane or three-dimensional space under the action of external force, and can maintain the stability of the ion beam conduit shape after bending. Each conduit unit can move relative to adjacent conduit units by a preset angle. The conduit unit includes at least one pair of opposing guide electrodes 1, which are used to form a self-organized guiding electric field when interacting with the ion beam, so that the ion beam forms a preset angle with the direction of the incident ions and enters the next conduit unit. The guide electrodes 1 of adjacent conduit units are connected through a resistor network and ground potential.

[0024] The conduit unit includes an insulating frame, which comprises an electrode fixing module and a connecting module. The electrode fixing module is used to fix the guide electrode 1. The electrode fixing module is annular, and its annular circumference is wavy. Figure 1As shown, its wavy structure resembles the shape of a goose's neck skeleton. Specifically, the electrode fixing module is a relatively flat cylinder 2. A square through hole 3 is provided in the center of the cylinder 2. Semicircular grooves 4 are provided on both sides of the square through hole 3, and the openings of the semicircular grooves 4 are on the side walls of the cylinder 2. The semicircular grooves 4 are used to fix the guide electrode 1 in the square through hole 3 by screws or bolts. A second resistor 6 connected to the guide electrode 1 is provided in each semicircular groove 4. The other end of the second resistor 6 is grounded, that is, the end not connected to the guide electrode is grounded. A semicircular through hole is provided on each of the two side walls of the semicircular groove 4. The first resistor 5 is connected to the guide electrode 1 of the current insulating frame and the next insulating frame through the semicircular through hole. The connecting module includes a lug 7 and a groove 8 located behind the lug 7. The shape of the groove 8 corresponds to the shape of the lug 7. The lug 7 is used to connect to the groove 8 of the preceding insulating frame, and the groove 8 is used to connect to the lug 7 of the following insulating frame. The lugs 7 are respectively located above and below the square through hole 3. The lugs 7 and the groove 8 are preferably fixed together by bolts. The maximum deflection between adjacent conduit units is 3°, and the entire tube can achieve a deflection of 120°. The insulating frame is made of flexible insulating material, such as pure PEEK or polyimide, and can be integrally molded using 3D printing technology. The insulating frame is tubular, with strip-shaped or corrugated conductive layers and resistive layers with different conductivity, as well as a grounding layer of distributed resistive network embedded in the tube wall. Reinforcing rings can be set at intervals on the outside of the flexible tube wall to resist atmospheric pressure, enabling the conduit itself to maintain a vacuum without the need for an external corrugated tube. Alternatively, tiny evacuation holes can be designed inside the ion beam conduit to simultaneously evacuate the vacuum from both inside and outside.

[0025] A pair of guide electrodes 1 are positioned opposite each other on the insulating frame. Specifically, one guide electrode 1 is fixed to the left half of the insulating frame, and the opposite guide electrode 1 is fixed to the right half of the insulating frame. The space between the two opposite guide electrodes 1 is for the ion beam to pass through, and the pair of guide electrodes 1 do not contact each other. The guide electrodes 1 are fixed to the insulating frame by screws or bolts, etc.

[0026] The connecting module is used to connect adjacent catheter units to form an ion beam catheter as a whole. The connecting module adopts a snap-fit ​​structure to snap adjacent catheter units together. In this embodiment, the guide electrodes 1 of adjacent catheter units are horizontally parallel to each other.

[0027] like Figure 3 and Figure 4As shown, in another embodiment of the present invention, the structure of the catheter unit is improved to achieve three-dimensional spatial bending. Specifically, the guide electrodes 1 of adjacent catheter units are arranged horizontally parallel or perpendicularly to each other. Each catheter unit is composed of alternately stacked X-direction guide modules and Y-direction guide modules. The X and Y-direction guide electrode plates 1 are perpendicular to each other. Adjacent units are connected by a vertical connecting shaft to achieve oscillation in both directions. Its self-organized electric field needs to be established in three-dimensional space, enabling arbitrary bending transmission of the ion beam in three-dimensional space.

[0028] In another embodiment of the present invention, the conduit unit includes an insulating frame, which includes an electrode fixing module and a connecting module. The electrode fixing module is a relatively flat cylinder 2 with an "I"-shaped boss 9 on it. The upper and lower surfaces of the "I"-shaped boss 9 are arc-shaped, corresponding to the surface of the cylinder 2. The "I"-shaped boss 9 is integrally formed with the cylinder 2. A square through hole 3 is provided in the center of this integrally formed structure, and the guide electrode 1 is fixed in the square through hole 3 by bolts. The connecting module includes lugs 7 and grooves 8. The shape of the grooves 8 corresponds to the shape of the lugs 7. The lugs 7 are used to connect to the grooves 8 of the previous insulating frame, and the grooves 8 are used to connect to the lugs 7 of the next insulating frame. The lugs 7 are respectively located above and below the square through hole 3, and the grooves 8 are respectively located to the left and right sides of the square through hole 3, or the lugs 7 are respectively located to the left and right sides of the square through hole 3, and the grooves 8 are respectively located above and below the square through hole 3. The lugs 7 and the grooves 8 are preferably fixed by bolts. The maximum deflection between adjacent conduit units is 2°. In this embodiment, the connection method of the first resistor 5 and the second resistor 6 is similar to that of the previous embodiment, therefore Figure 3 and Figure 4 The first resistor 5 and the second resistor 6 are not shown in the diagram.

[0029] In this embodiment, in addition to beryllium copper and stainless steel, the guide electrode 1 can also be made of materials such as titanium, molybdenum, and graphite that are resistant to high temperatures and have low sputtering yield, or a protective layer such as a diamond-like carbon film can be deposited on its surface.

[0030] The surface of the guide electrode 1 is treated to form an anti-sputtering surface capable of suppressing secondary ion sputtering, used to suppress secondary ion sputtering generated when incident ions bombard the inner wall. Specifically, the anti-sputtering surface treatment method involves setting a deep trench structure on the surface of the guide electrode 1. The deep trench structure forms a preset angle with the direction of the incident ions. The depth, width, and tilt angle of the deep trench are optimized to suppress secondary ion sputtering to the greatest extent. The trench surface can be gold-plated to improve conductivity and corrosion resistance. In this embodiment, the preset angle can be 20°-45°, so that sputtered ions are confined within the trench and reabsorbed, thereby significantly reducing the phenomenon of charge being transported to the opposite electrode.

[0031] like Figure 5As shown, in another embodiment of the present invention, a porous metal structure or a micron- or nano-scale three-dimensional morphology is formed on the surface of the guide electrode 1 to adsorb and suppress the escape of secondary ions. The porous metal structure can be, for example, copper foam or nickel foam. To achieve ion beam catheters with smaller pore sizes and higher integration, 3D printing technology can be used for integral molding. During 3D printing, micropores or microgrooves are embedded (or directly printed) into the inner wall of the catheter as an anti-sputtering surface. This allows for the fabrication of flexible catheters with pore sizes ranging from 1 to 20 mm, achieving millimeter-level fine tubes, which is particularly suitable for applications requiring high precision and small volume, such as endoscopic tumor treatment.

[0032] In this embodiment, the catheter unit is Figure 5 The flexible metal bellows shown comprises, from the outside to the inside, a metal bellows shell 10, a flexible high-resistivity layer 11, a flexible insulating layer 12, and a flexible low-resistivity layer 13. A reinforcing ring 14 is provided within the flexible insulating layer, and an electrode 1 is disposed within the flexible low-resistivity layer 13, fixed thereto by an insulating tape 15. In this embodiment, the connection method of the first resistor 5 and the second resistor 6 is similar to that of the previous embodiment. Figure 5 The first resistor 5 and the second resistor 6 are not shown in the diagram.

[0033] To achieve self-organized generation and adaptive stability of the guiding electric field, each guiding electrode 1 is connected to the electrodes 1 of adjacent units and the ground potential through a resistor network. The resistor network simulates the surface and bulk resistance of a conventional insulated conduit, but its resistance value is pre-designed and constant, unaffected by ion irradiation. Specifically, the resistor network includes a first resistor Rs 5 and a second resistor Rg 6. The guiding electrodes 1 of adjacent conduit units are connected through the first resistor Rs 5 to simulate charge conduction along the ion beam conduit axis. Each guiding electrode 1 is grounded through the second resistor Rg 6 to simulate charge leakage to the outside of the ion beam conduit. The resistance values ​​of the first resistor Rs 5 and the second resistor Rg 6 are different, with the first resistor Rs 5 having a smaller resistance than the second resistor Rg 6. For example, the first resistor Rs 5 can be 5 GΩ, and the second resistor Rs 6 can be 20 GΩ. Both the first resistor Rs 5 and the second resistor Rg 6 are high-voltage, low-noise precision resistors, hidden within an insulating frame to avoid direct exposure to the ion beam.

[0034] The resistance values ​​of the first resistor Rs 5 and the second resistor Rg 6 are not affected by ion irradiation. By optimizing the resistance values ​​of the first resistor Rs 5 and the second resistor Rg 6, the establishment speed and region of the self-organized guiding electric field can be adapted to ion beams of different energies and current intensities.

[0035] Dynamic vacuum sealing is achieved between adjacent conduit units through sealing rings.

[0036] The working principle of the adaptive ion beam catheter is as follows: O₂ with energies of 20-250 keV / q is generated by an ion source or ion accelerator. 5+ The ion beam, after being collimated, is incident into the ion beam guide tube. The ion beam guide tube is then bent to the desired angle or curve.

[0037] When the ion beam is incident at a certain angle deviating from the guide tube axis, some ions will collide with the anti-sputtering surface (such as the deep trench structure) of the guide electrode 1 and deposit charge. Since the deep trench structure effectively suppresses the generation and escape of secondary ions, very few secondary ions are sputtered, and the deposited charge is mainly conducted and redistributed through a preset resistor network.

[0038] The deposited charge establishes a self-organized electrostatic field (guiding potential difference) between the opposing guiding electrodes 1, with a potential difference exceeding 1000V. This electric field continuously acts on the subsequently flying ions, deflecting them and causing them to travel along the axis of the curved ion beam guide tube.

[0039] The emitted ion beam is analyzed by an electrostatic deflector plate, confirming that its energy and charge state are consistent with the incident beam. Due to the first resistor Rs 5 and the second resistor Rg 6, the deposition and dissipation of charge can reach a dynamic equilibrium, forming a stable guiding electric field. When the bending angle of the ion beam guide tube changes, the impact point of the ions changes, and the distribution of the deposited charge also changes accordingly. The guiding electric field adaptively adjusts until a new equilibrium is established, thus continuing to guide the ion beam along the curved tube.

[0040] The successfully guided ions do not undergo substantial collisions with the tube wall throughout the process, thus preserving their energy and charge states.

[0041] Example 2 Currently, ion beam therapy for cancer, except for skin cancer, requires high-energy ions to traverse several to twenty centimeters of healthy tissue to reach the tumor site. Although the Bragg peak effect exists, meaning the energy density of ions deposited at the end of their range, within the tumor, is higher than along the path, most of their energy is still lost along the path. This is because the path length is much greater than the width of the Bragg peak. For endoscopically accessible tumors in the oral cavity, nasal cavity, pharynx, esophagus, stomach, rectum, and cervix, flexible ion beam catheters can, in principle, guide the ion beam directly to the tumor surface for irradiation (through a 15–30 micrometer thick titanium window). This transforms deep tumors into superficial or shallow tumors for treatment. In other words, the ion beam is guided directly through the esophagus to the tumor in the stomach, where the ions directly enter the tumor area through the 15–30 micrometer titanium window. This will significantly shorten the path length of ions within healthy tissue, reducing the total radiation dose received by the patient and drastically lowering the required ion energy, thus greatly reducing accelerator size, lowering costs, and promoting widespread adoption. For proton beams, a range of 1–3 cm within the human body (superficial tumors) requires approximately 10–25 MeV of energy; while 5–30 cm (intratumoral tumors) requires 80–250 MeV (the maximum range of 30 cm can handle 97% of clinical cases). However, the therapeutic portion is the last 1–3 cm within the tumor, still corresponding to 10–25 MeV. Using penetrating methods, approximately 60–90% of the proton energy is lost along the path (to healthy tissue), and the accelerator costs approximately 100-200 million RMB. If flexible ion beam catheters can be used, most of the proton energy can be directly injected into the tumor (only needing to pass through a titanium window), and the accelerator cost is approximately 20 million RMB. For C ions, the situation is similar: a range of 1–3 cm within the human body requires approximately 50–110 MeV / u of energy, while 5–30 cm requires 150–430 MeV / u. When using a penetrating method for treatment, approximately 40–80% of the C-ion energy is lost along the path (only 50–110 MeV / u is injected into the tumor at the end of the range), and the accelerator costs approximately 500 million yuan; if a flexible ion beam catheter can be used for treatment, most of the energy can be directly injected into the tumor (only needing to pass through a titanium window).

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific embodiments of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention. The above content is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims

1. A flexible adaptive ion beam catheter, characterized in that, include: A plurality of catheter units are connected sequentially along the axial direction. Each catheter unit can move at a preset angle relative to the adjacent catheter unit. Each catheter unit includes at least one pair of opposing guide electrodes for forming a self-organized guide electric field when interacting with the ion beam, so that the ion beam forms a preset angle with the direction of the incident ions and enters the next catheter unit. The guide electrodes of adjacent catheter units are connected through a resistor network and ground potential.

2. The flexible adaptive ion beam catheter as described in claim 1, characterized in that, The surface of the guide electrode is treated to form an anti-sputtering surface that can suppress secondary ion sputtering.

3. The flexible adaptive ion beam catheter as described in claim 2, characterized in that, The method for treating the anti-sputtering surface is to set a deep groove structure on the surface of the guide electrode, or to set a porous metal structure on the surface of the guide electrode, or to set a micron or nano-scale three-dimensional morphology on the surface of the guide electrode.

4. The flexible adaptive ion beam catheter as described in claim 3, characterized in that, The deep groove structure is at a preset angle to the direction of the incident ions.

5. The flexible adaptive ion beam catheter as described in claim 1, characterized in that, The resistor network includes a first resistor and a second resistor. The guide electrodes of adjacent catheter units are connected through the first resistor to simulate the conduction of charge along the ion beam catheter axis. Each guide electrode is grounded through the second resistor to simulate the leakage of charge to the outside of the ion beam catheter. The resistance values ​​of the first resistor and the second resistor are different.

6. The flexible adaptive ion beam catheter as described in claim 5, characterized in that, The resistance values ​​of the first and second resistors are not affected by ion irradiation. By optimizing the resistance values ​​of the first and second resistors, the establishment speed and region of the self-organized directional electric field can be adapted to ion beams of different energies and current intensities.

7. The flexible adaptive ion beam catheter as described in claim 1, characterized in that, The catheter unit includes an insulating frame, which includes an electrode fixing module and a connecting module. The electrode fixing module is used to fix the guide electrode. The electrode fixing module is annular and its annular circumference is wavy, so that a pair of guide electrodes are disposed on it opposite to each other. The connecting module is used to connect adjacent catheter units.

8. The flexible adaptive ion beam catheter as described in claim 7, characterized in that, The guide electrodes of adjacent catheter units are arranged horizontally parallel or perpendicular to each other.

9. The flexible adaptive ion beam catheter as described in any one of claims 1-8, characterized in that, Dynamic vacuum sealing is achieved between adjacent conduit units through sealing rings.

10. The flexible adaptive ion beam catheter as described in any one of claims 1-8, characterized in that, The ion beam guide tube is housed within a vacuum stainless steel corrugated tube.

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