Slow extraction structure of particle equipment

Abstract

The utility model relates to the technical field of particle equipment, in particular to a slow extraction structure of particle equipment, which comprises a beam generation unit, a plurality of magnetic beam deflection units and a plurality of beam shaping units, the plurality of magnetic beam deflection units and the plurality of beam shaping units enclose to form a particle beam acceleration track, the outlet position of the beam generation unit is tangent to the particle acceleration track, a plurality of treatment rooms are arranged at the same time, and the treatment rooms are close to the magnetic beam deflection units. The magnetic beam deflection unit is also provided with a lead-out magnet member used for cutting the particle beam. The present application has the effect of supplying the particle beam to a plurality of treatment rooms at the same time and reducing the waste of the particle beam.

Description

Technical Field

[0001] This application relates to the field of particle device technology, and in particular to a slow extraction structure for a particle device. Background Technology

[0002] Particle therapy is an advanced radiotherapy method that uses charged particles to treat tumors. It involves professional fields such as proton, heavy ion, and boron neutron capture therapy. Among them, the stoichiometric distribution and biological characteristics of heavy ions are significantly superior to those of other particles, and they have significant advantages in radiophysics and biology. It is currently the main direction of particle therapy development.

[0003] For example, the invention patent with publication number CN107648746A discloses a beam guiding system, a particle beam therapy system and related methods, which includes a beam production unit, several magnetic beam deflection units, several beam shaping units and several beam monitors. The beam production unit is used to produce particle beams. After the particle beams pass through the magnetic beam deflection units, their orbits are deflected. Under the beam action of the beam shaping units, the shape, size and intensity of the particle beams meet the experimental requirements. Subsequently, the particle beams are supplied to a treatment chamber under the deflection action of the magnetic beam deflection units.

[0004] The above solution can only provide particle beams to one treatment room at a time, resulting in a waste of particle beams and needs improvement. Utility Model Content

[0005] In order to supply particle beams to multiple treatment rooms at the same time and reduce particle beam waste, this application provides a slow extraction structure for a particle device.

[0006] This application provides a slow extraction structure for a particle device, which adopts the following technical solution:

[0007] A slow extraction structure for a particle device includes a beam generation unit, several magnetic beam deflection units, and several beam shaping units. The magnetic beam deflection units and the beam shaping units are arranged alternately, and the magnetic beam deflection units and the beam shaping units surround each other to form a particle beam acceleration track. The exit position of the beam generation unit is tangent to the particle beam acceleration track. Several treatment chambers are also provided, which are close to the magnetic beam deflection units. The magnetic beam deflection units are also provided with extraction magnets for cutting the particle beam.

[0008] By adopting the above technical solution, when staff are working in the treatment room, they activate the beam generation unit. At this time, a particle beam is emitted from the outlet of the beam generation unit. Under the deflection of the magnetic beam deflection unit, the particle beam is introduced into the particle beam acceleration track. Under the rectification of the beam shaping unit, the particle beam becomes more compact. When the particle beam approaches the extraction magnet, the extraction magnet applies precise deflection to the part of the particle beam required by the treatment room, thereby achieving precise and selective extraction of the particle beam. Different parts of the particle beam are extracted by extraction magnets on different magnetic beam deflection units, thereby enabling the particle beam to be supplied to multiple treatment rooms at the same time, reducing the waste of particle beam.

[0009] Optionally, a vacuum tube is fixed at the opening of the beam generating unit. The vacuum tube is positioned on the particle beam acceleration track. Several extension tubes are fixed on the vacuum tube. The extension tubes are connected to the vacuum tube and are positioned opposite to the treatment chamber. The inlet of the extension tube is located on the magnetic beam deflection unit near the lead-out magnet.

[0010] By adopting the above technical solution, the particle beam will interact with gas molecules in the air, which will cause the particle beam to be scattered, absorbed or have its charge state changed, thus affecting the stability and quality of the particle beam. The vacuum tube provides a high vacuum environment for the particle beam and reduces the interaction between the particle beam and gas molecules.

[0011] Optionally, the extension tube is also provided with a plurality of beam shaping units, and the number of beam shaping units provided on the plurality of extension tubes is the same.

[0012] By adopting the above technical solution, this setup ensures that the particle beam maintains uniformity and consistency along the treatment path of different extension tubes, meaning that the properties of the particle beam remain consistent in different extension tubes, thereby improving the precision of tumor treatment.

[0013] Optionally, some of the treatment rooms include a fixed-beam treatment room, a 180-degree rotating-beam treatment room, and a 360-degree rotating-beam treatment room.

[0014] By adopting the above technical solutions, the 180-degree rotating beam therapy chamber and the 360-degree rotating beam therapy chamber respectively achieve free rotation of the particle beam within a 180-degree range and a 360-degree range, providing more solutions for the treatment of tumors.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. When staff use the treatment room, the beam generation unit is activated. At this time, under the deflection of the magnetic beam deflection unit, the particle beam enters the particle beam acceleration track. Under the action of the beam shaping unit, the particle beam becomes more compact. When the particle beam approaches the lead-out magnet, the lead-out magnet guides the particle beam into the treatment room. Several lead-out magnets act separately, enabling the particle beam to be supplied to multiple treatment rooms at the same time, reducing the waste of particle beam.

[0017] 2. The setup of fixed-beam therapy rooms, 180-degree rotating-beam therapy rooms, and 360-degree rotating-beam therapy rooms provides different solutions for patient treatment, making the tumor treatment process safer and more flexible. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a slow extraction structure of a particle device according to an embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of the slow extraction structure of the particle device in the embodiments of this application.

[0020] Reference numerals in the attached figures: 1. Beam generation unit; 2. Magnetic beam deflection unit; 3. Beam shaping unit; 4. Particle beam acceleration track; 5. Treatment chamber; 6. Extraction magnet; 7. Vacuum tube; 8. Extension tube; 51. Fixed beam treatment chamber; 52. 180-degree rotating beam treatment chamber; 53. 360-degree rotating beam treatment chamber. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0022] This application discloses a slow extraction structure for a particle device.

[0023] Reference Figure 1 A slow extraction structure for a particle device includes a beam generation unit 1, several magnetic beam deflection units 2, and several beam shaping units 3. In this embodiment, there are preferably 8 magnetic beam deflection units 2 and 16 beam shaping units 3. The magnetic beam deflection units 2 are preferably 45-degree bending magnets, and the beam shaping units 3 are preferably 4-stage magnets. Every 2 beam shaping units 3 and 1 magnetic beam deflection unit 2 form a group. The beam shaping units 3 and the magnetic beam deflection units 2 form a particle beam acceleration track 4. The exit direction of the beam generation unit 1 is tangent to the particle beam acceleration track 4. The magnetic beam deflection unit 2 is also provided with an extraction magnet 6, which realizes the separation or cutting process of a specific part in the particle beam. At the same time, several treatment chambers 5 are provided for receiving the particle beam processed by the extraction magnet 6.

[0024] When using treatment chamber 5, beam generation unit 1 emits a particle beam in the exit direction. The particle beam enters the particle beam acceleration track 4. In beam shaping unit 3, the particle beam is kept compact, reducing the loss caused by beam divergence. Subsequently, the particle beam moves along the particle beam acceleration track 4 under the deflection action of magnetic beam deflection track. At this time, under the extraction action of extraction magnet 6, a specific part of the particle beam enters treatment chamber 5, thereby realizing the supply of particle beam in treatment chamber 5.

[0025] Reference Figure 2 The outlet of the beam generation unit 1 is provided with a vacuum tube 7, which passes through several magnetic beam deflection units 2 and several beam shaping units 3. An extension tube 8 is integrally fixed on the vacuum tube 7. The extension tube 8 is arranged in a straight line and is connected to the vacuum tube 7. The extension tube 8 is arranged opposite to the treatment chamber 5. The outlet of the extension tube 8 is located in the treatment chamber 5. This arrangement allows the particle beam to move along the direction of the particle beam acceleration track 4 in the vacuum tube 7. The arrangement of the vacuum tube 7 further reduces the particle beam mass loss caused by the interaction between the particle beam and gas molecules.

[0026] Reference Figure 1 and Figure 2 Two magnets 6 are provided on each magnetic beam deflection unit 2. The two magnets 6 are located on both sides of the extension tube 8 and are parallel to the extension tube 8. This allows a specific part of the particle beam to enter the interior of the extension tube 8 from the vacuum tube 7. At the same time, several beam shaping units 3 are also provided in the middle of the extension tube 8. Preferably, there are two beam shaping units 3. Under the shaping effect of the beam shaping units 3, the particle beam entering the extension tube 8 is more compact, making the particle beam more suitable for the experimental or treatment process in the treatment room 5.

[0027] Specifically, the extraction magnet 6 preferably consists of a Kicker magnet and an extraction cutting magnet. The particle beam acceleration track 4 is a low-field region, and the region between the two extraction magnets 6 is a high-field region. When the particle beam passes between the two Kicker magnets, a brief and strong magnetic field is applied to the Kicker magnet, causing the particle beam to deviate from the particle beam acceleration track 4. Subsequently, the particle beam enters the high-field region, that is, the region between the two extraction cutting magnets. At this time, the extraction cutting magnet further separates and cuts specific parts of the particle beam, separating the unwanted parts from the target particle beam, so as to achieve precise and selective extraction of the particle beam. The particle beam at this time meets the experimental requirements and will not cause unnecessary interference to other beams.

[0028] Reference Figure 1 and Figure 2The treatment room 5 includes a fixed-beam treatment room 51, a 180-degree rotating-beam treatment room 52, and a 360-degree rotating-beam treatment room 53. In the embodiments of this application, each of the fixed-beam treatment room 51, the 180-degree rotating-beam treatment room 52, and the 360-degree rotating-beam treatment room 53 is preferably set to one. Correspondingly, the extension tube 8 is preferably set to three. The different settings of the treatment room 5 provide different options for treatment.

[0029] The implementation principle of the slow extraction structure of a particle device in this application embodiment is as follows: When the staff uses the fixed beam treatment chamber 51, the 180-degree rotating beam treatment chamber 52, or the 360-degree rotating beam treatment chamber 53, the beam generation unit 1 is activated. The beam generation unit 1 generates a particle beam at the outlet position. The particle beam enters the particle beam acceleration track 4 along the vacuum tube 7. Under the combined action of the magnetic beam deflection unit 2 and the beam shaping unit 3, the particle beam moves in the particle beam acceleration track 4. When flowing through the extraction magnet 6, a specific part of the particle beam is introduced into the extension tube 8. Subsequently, the particle beam enters the fixed beam treatment chamber 51, the 180-degree rotating beam treatment chamber 52, and the 360-degree rotating beam treatment chamber 53, respectively. This arrangement enables the particle beam to be supplied to multiple treatment chambers 5 at the same time, reducing the waste of particle beam.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A slow extraction structure for a particle device, characterized by: The particle beam accelerator comprises a beam generating unit (1), a plurality of magnetic beam deflection units (2) and a plurality of beam shaping units (3), the magnetic beam deflection units (2) and the beam shaping units (3) are arranged alternately, the magnetic beam deflection units (2) and the beam shaping units (3) form a particle beam acceleration track (4), the outlet of the beam generating unit (1) is tangent to the particle beam acceleration track (4), and a plurality of treatment rooms (5) are arranged close to the magnetic beam deflection units (2), and an extraction magnet (6) for cutting particle beam is arranged on the magnetic beam deflection units (2).

2. A slow extraction structure for a particle device according to claim 1, wherein: A vacuum tube (7) is fixed to the opening of the beam generating unit (1), the vacuum tube (7) is arranged on the particle beam acceleration track (4), a plurality of extension tubes (8) are fixed to the vacuum tube (7), the extension tubes (8) are communicated with the vacuum tube (7), the extension tubes (8) are arranged opposite to the treatment rooms (5), and the inlet of the extension tubes (8) is located close to the extraction magnet (6) on the magnetic beam deflection units (2).

3. A slow extraction structure for a particle device according to claim 2, wherein: A plurality of beam shaping units (3) are arranged on the extension tubes (8), and the number of the beam shaping units (3) arranged on the extension tubes (8) is the same.

4. A slow extraction structure for a particle device according to claim 3, wherein: The treatment rooms (5) comprise a fixed beam treatment room (51), a 180-degree rotating beam treatment room (52) and a 360-degree rotating beam treatment room (53).

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