A miniaturized multi-ion integrated synchrotron

Abstract

The present invention relates to a miniaturized multi-ion integrated synchrotron, comprising: at least six deflection dipole magnet groups and a plurality of straight sections respectively connected between the deflection dipole magnet groups, and paired horizontal focusing quadrupole magnets and horizontal defocusing quadrupole magnets are arranged adjacent to the upstream and downstream of each deflection dipole magnet group; an injection cutting magnet and an injection electrostatic deflector are located in one straight section, an extraction cutting magnet is located in another straight section, and an extraction electrostatic deflector and an extraction kicker magnet are arranged in the straight section upstream of the straight section where the extraction cutting magnet is located in the movement direction of the particles in the synchrotron ring; an RF-KO slow extraction device, a beam measurement device and a high-frequency acceleration device are arranged in the remaining straight sections, wherein the synchrotron is designed to optionally control the RF-KO slow extraction device, the extraction electrostatic deflector and the extraction cutting magnet to achieve slow extraction as required, or control the extraction kicker magnet and the extraction cutting magnet to achieve fast extraction.

Description

Technical Field

[0001] The present invention relates to a miniaturized multi-ion integrated synchrotron. Background Art

[0002] After protons and heavy ions are injected into the human body, they will gradually lose energy along the range, and their energy will be concentratedly released at the end of the range. The energy loss rate will form a sharp peak, namely the so-called Bragg Peak. Since almost all the particle energy is released at the Bragg Peak, the particle beam basically will not cross the end point of the range, resulting in a very steep back end of the Bragg Peak and the dose rapidly dropping to zero. Currently, due to technical factors and clinical experience, protons and carbon ions have become the most widely used therapeutic particles.

[0003] In the existing single-ion therapy with protons or carbon ions, the dose is calculated and irradiated in such a way that the survival rate of cancer cells in the overall irradiated area is constant. However, the biological effects themselves are not uniform within the irradiated area, and the biological effect at the center of the tumor is not necessarily the greatest. Therefore, there will be some cancer cells that are not killed by irradiation after the tumor is irradiated, which will bring the possibility of recurrence. The effect caused by this non-uniformity cannot be solved by simply adjusting the dose. Therefore, multi-ion combined therapy is proposed, that is, the different parts of the tumor are irradiated using the biological effects of different ions to optimize both the dose distribution and the biological effect, so as to improve the irradiation accuracy and reduce the damage to the surrounding normal tissues. With the increasingly in-depth research on multi-ion combined therapy, the demand of heavy ion therapy accelerators for increasing the types of ion therapy is becoming stronger and stronger. The ranges of different ion species correspond to different energies and magnetic rigidities. It is easy to realize the rapid switching of different types of ions required for treatment in the same accelerator by using a synchrotron.

[0004] The extraction methods of synchrotrons can be divided into fast extraction and slow extraction. Fast extraction means that all particles are extracted within one or several turns by changing the beam orbit. Slow extraction uses the resonance method to slowly increase the particle emittance and gradually extracts particles within a relatively long time range.

[0005] Chinese invention patent CN108112154B discloses a heavy ion synchrotron for realizing the slow extraction of the beam. Each curved ion beam segment therein includes a first dipole magnet and a second dipole magnet connected in series. The heavy ions run from the first dipole magnet to the second dipole magnet. A vertical correction magnet and a vertical focusing quadrupole magnet are sequentially arranged between the first dipole magnet and the second dipole magnet. A horizontal correction magnet, a sextupole magnet, and a horizontal focusing quadrupole magnet are sequentially arranged in the straight particle beam segment downstream of the second dipole magnet.

[0006] The RF-KO (RF-Knockout) extraction method is a typical third-order resonance slow extraction method, which has been widely used in proton / heavy ion radiotherapy devices. By applying a transverse radiofrequency field to the beam in the synchrotron ring through the RF-KO slow extraction device, particles are excited to resonate, increasing the particle emittance and causing the particles to leave the stable region, thereby extracting the particles. The advantages of this method are that the optical parameters remain unchanged during the extraction process, the bunch switching is rapid, and the extracted beam is uniform.

[0007] After the particles leave the stable region, they first enter the electrostatic deflector along the separatrix. The extracted beam generated under the action of the electrostatic deflector is further separated from the circulating beam under the action of the extraction cut-off magnet, realizing slow extraction.

[0008] In a typical fast extraction method, an impact magnet is used to generate a very high pulsed magnetic field with a certain flat-top width (hundreds of ns to several μs) in a very short rise and fall time (within 100 ns) to deflect the beam for fast extraction.

[0009] Compared with conventional dose-rate radiotherapy, FLASH (FLASH radiotherapy) is a method of radiotherapy using ultra-high dose rates. FLASH has a tumor growth inhibitory effect similar to that of conventional dose rates and causes less damage to healthy tissues. The dose rate requirement for FLASH is >40 Gy / s, and the irradiation time is usually less than 1 s. The advantage of a synchrotron is that it can conveniently adjust the energy of the beam. To meet the dose rate requirement of FLASH, the synchrotron can either adopt fast extraction (single-turn extraction) or consider slow extraction with a short duration (<50 ms). Therefore, it is desired to be able to optionally achieve fast extraction or slow extraction as needed in a single synchrotron. Summary of the Invention

[0010] Therefore, the present invention provides a miniaturized multi-ion integrated synchrotron to meet the increasingly strong demand for increasing ion species in ion radiotherapy, while taking into account both fast extraction and slow extraction methods, enabling the synchrotron to be used for both conventional dose-rate radiotherapy and FLASH radiotherapy.

[0011] The miniaturized multi-ion integrated synchrotron according to the present invention includes: at least six deflection dipole magnet groups and a plurality of straight sections respectively connected between the deflection dipole magnet groups. Among them, the deflection dipole magnet groups and the straight sections are connected in series from beginning to end to form the synchrotron ring of the synchrotron. Among them, each deflection dipole magnet group is composed of two deflection dipole magnets, and paired horizontal focusing quadrupole magnets and horizontal defocusing quadrupole magnets are arranged adjacent to the upstream and downstream of each deflection dipole magnet group respectively. Among them, the injection cut-off magnet and the injection electrostatic deflector are jointly located in one of the straight sections, and the extraction cut-off magnet is located in another straight section. Among them, an extraction electrostatic deflector and an extraction kicker magnet are arranged in the straight section upstream of the straight section where the extraction cut-off magnet is located in the moving direction of the particles in the synchrotron ring. Among the remaining straight sections other than the straight section where the injection cut-off magnet and the injection electrostatic deflector are located, the straight section where the extraction electrostatic deflector and the extraction kicker magnet are located, and the straight section where the extraction cut-off magnet is located, an RF-KO slow extraction device, a beam measurement device, and a high-frequency acceleration device are arranged, and the high-frequency acceleration device is located in one of the remaining straight sections.

[0012] A pair of resonance sextupole magnets are respectively arranged centrosymmetrically in two straight sections that can meet the Hardt condition and have sufficient installation space. A pair of chromaticity sextupole magnets are respectively arranged centrosymmetrically in two straight sections with sufficient installation space.

[0013] A number of injection bump magnets are arranged upstream and downstream of the injection cut-off magnet and the injection electrostatic deflector.

[0014] The synchrotron is designed to optionally control the RF-KO slow extraction device, the extraction electrostatic deflector, and the extraction cut-off magnet as needed to achieve slow extraction, or control the extraction kicker magnet and the extraction cut-off magnet to achieve fast extraction.

[0015] Thus, the present invention provides a miniaturized, multi-purpose, multi-ion integrated synchrotron. Through the appropriate arrangement of each device in each straight section, it is possible to optionally make the RF-KO slow extraction device, the extraction electrostatic deflector, and the extraction cut-off magnet in a working state as needed, so that each deflection dipole magnet, horizontal focusing and defocusing quadrupole magnet, resonance sextupole magnet, and chromaticity sextupole magnet in the synchrotron ring cooperate with them to achieve slow extraction of the particles in the synchrotron ring; or make the extraction kicker magnet and the extraction cut-off magnet in a working state, so that each deflection dipole magnet, horizontal focusing and defocusing quadrupole magnet, resonance sextupole magnet, and chromaticity sextupole magnet in the synchrotron ring cooperate with them to achieve fast extraction within one or several laps of particle circulation.

[0016] In the miniaturized multi-ion integrated synchrotron of the present invention, the centrosymmetric arrangements of the chromaticity sextupole magnet and the resonance sextupole magnet are both achieved in a compact structure, and the relative installation position requirements of the injection bump magnet with respect to the straight section where the injection cut magnet and the injection electrostatic deflector are located are also satisfied.

[0017] According to a preferred embodiment of the miniaturized multi-ion integrated synchrotron of the present invention, within the straight section where the injection cut magnet and the injection electrostatic deflector are located, the injection bump magnet is arranged upstream and downstream of the injection cut magnet and the injection electrostatic deflector; and / or the injection bump magnet is arranged within the remaining straight sections at the upstream and downstream positions of the straight section where the injection cut magnet and the injection electrostatic deflector are located respectively.

[0018] According to a preferred embodiment of the miniaturized multi-ion integrated synchrotron of the present invention, one resonance sextupole magnet is arranged within the downstream straight section adjacent to the straight section where the extraction cut magnet is located in the direction of particle movement within the synchrotron ring, and the other resonance sextupole magnet is arranged within the downstream straight section adjacent to the straight section where the injection cut magnet and the injection electrostatic deflector are located in the direction of particle movement within the synchrotron ring.

[0019] Therefore, in order to arrange the chromaticity sextupole magnet and the resonance sextupole magnet with a preferably centrosymmetric distribution, it is more advantageous that the straight section where the injection cut magnet and the injection electrostatic deflector are located and the straight section where the extraction cut magnet is located are centrosymmetrically distributed within the synchrotron ring, and at least six straight sections of the synchrotron are also required, including four straight sections for arranging the chromaticity sextupole magnet and the resonance sextupole magnet, and the straight sections for injecting and extracting particles respectively.

[0020] Therefore, for achieving a compact design, according to a preferred embodiment of the synchrotron of the present invention, the synchrotron includes exactly six groups of deflection dipole magnet sets, wherein each of the straight sections is sequentially the first straight section to the sixth straight section in the direction of particle movement within the synchrotron ring, with the straight section where the injection cut magnet and the injection electrostatic deflector are located as the first straight section, and the straight section where the extraction kick magnet and the extraction cut magnet are located as the fourth straight section.

[0021] Preferably, the RF-KO slow extraction device is located in the second straight section, the extraction kick magnet and the extraction electrostatic deflector are located in the third straight section, and the high-frequency acceleration device is arranged in one of the fifth straight section and the sixth straight section. That is to say, the high-frequency acceleration device is arranged within the semi-circumference of the synchrotron ring downstream of the fourth straight section. As an alternative embodiment, it can be considered that the high-frequency acceleration device is arranged in the second straight section, the extraction kick magnet and the extraction electrostatic deflector are located in the third straight section, and the RF-KO slow extraction device is located in one of the fifth straight section and the sixth straight section, that is to say, the high-frequency acceleration device is arranged within the semi-circumference of the synchrotron ring upstream rather than downstream of the fourth straight section.

[0022] Preferably, the resonant sextupole magnets are arranged in the second and fifth straight sections, and the chromaticity sextupole magnets are arranged in the third and sixth straight sections.

[0023] Preferably, a pair of injection bump magnets are located in the first straight section, and the other pair of injection bump magnets are respectively located in the second and sixth straight sections; alternatively, a pair of injection bump magnets are located in the first straight section, and the other pair of injection bump magnets are respectively located in the third and fifth straight sections.

[0024] Preferably, each group of deflecting dipole magnets has the same length or deflection angle. For example, the deflection angle of each deflecting dipole magnet is 30 degrees. However, each group of deflecting dipole magnets may also have different lengths or deflection angles.

[0025] Other features and advantages of the present application will be described in the subsequent specification, and in part, will be obvious from the specification, or will be understood by implementing the present application. Other advantages of the present application can be realized and obtained through the solutions described in the specification and the accompanying drawings. Description of the Drawings

[0026] The embodiments of the present invention will be explained in detail below with reference to the accompanying drawings. In the drawings:

[0027] Figure 1 Schematically shows a structural diagram of an embodiment of a miniaturized multi-ion integrated synchrotron according to the present invention;

[0028] Figure 2 Schematically shows the twiss parameters of an embodiment of a miniaturized multi-ion integrated synchrotron according to the present invention.

[0029] Reference Signs:

[0030] 11 First deflecting dipole magnet group

[0031] 12 Second deflecting dipole magnet group

[0032] 13 Third deflecting dipole magnet group

[0033] 14 Fourth deflecting dipole magnet group

[0034] 15 Fifth deflecting dipole magnet group

[0035] 16 Sixth deflecting dipole magnet group

[0036] 31 First horizontal focusing quadrupole magnet

[0037] 52 Second injection bump magnet

[0038] 80 Injection cutting magnet

[0039] 70 Injection Electrostatic Deflector

[0040] 53 Third Injection Skew Magnet

[0041] 21 First Horizontal Defocusing Quadrupole Magnet

[0042] 32 Second Horizontal Focusing Quadrupole Magnet

[0043] 54 Fourth Injection Skew Magnet

[0044] 43 Second Resonance Hexapole Magnet

[0045] 90 RF-KO Slow Extraction Device

[0046] 22 Second Horizontal Defocusing Quadrupole Magnet

[0047] 33 Third Horizontal Focusing Quadrupole Magnet

[0048] 44 Second Chromaticity Hexapole Magnet

[0049] 100 Extraction Kick Magnet

[0050] 71 Extraction Electrostatic Deflector

[0051] 23 Third Horizontal Defocusing Quadrupole Magnet

[0052] 34 Fourth Horizontal Focusing Quadrupole Magnet

[0053] 81 Extraction Cutting Magnet

[0054] 24 Fourth Horizontal Defocusing Quadrupole Magnet

[0055] 35 Fifth Horizontal Focusing Quadrupole Magnet

[0056] 41 First Resonance Hexapole Magnet

[0057] 110 Beam Measurement Device

[0058] 60 High-Frequency Acceleration Device

[0059] 25 Fifth Horizontal Defocusing Quadrupole Magnet

[0060] 36 Sixth Horizontal Focusing Quadrupole Magnet

[0061] 42 First Chromaticity Hexapole Magnet

[0062] 51 First Injection Skew Magnet

[0063] 26 Sixth Horizontal Defocusing Quadrupole Magnet

[0064] The accompanying drawings are used to explain the technical solution of the present application and form a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application. Detailed Embodiments

[0065] Figure 1 Schematically shows a structural schematic diagram of an embodiment of a miniaturized multi-ion integrated synchrotron according to the present invention.

[0066] In this embodiment, as Figure 1 shown, the synchrotron includes six sets of deflection dipole magnet groups 11, 12, 13, 14, 15, 16, and these deflection dipole magnet groups are arranged in series at the ends on the synchrotron ring. Each deflection dipole magnet group is composed of two identical deflection dipole magnets, and pairs of horizontal focusing quadrupole magnets 31, 32, 33, 34, 35, 36 and horizontal defocusing quadrupole magnets 21, 22, 23, 24, 25, 26 are arranged adjacent to the upstream and downstream of each deflection dipole magnet group respectively. In an embodiment not shown, each deflection dipole magnet may also have different lengths or deflection angles.

[0067] There are six straight sections between the six sets of deflection dipole magnet groups 11, 12, 13, 14, 15, 16 respectively. The first straight section is between the first deflection dipole magnet group 11 and the second deflection dipole magnet group 12, the second straight section is between the second deflection dipole magnet group 12 and the third deflection dipole magnet group 13, and so on. The sixth straight section is between the sixth deflection dipole magnet group 16 and the first deflection dipole magnet group 11.

[0068] The injection cutting magnet 80 and the injection electrostatic deflector 70 are located in the first straight section. The extraction cutting magnet 81 is located in the fourth straight section. The RF-KO slow extraction device 90 is arranged in the second straight section, and the extraction impact magnet 100 and the extraction electrostatic deflector 71 are arranged in the third straight section. The high-frequency acceleration device 60 is located in the sixth straight section. The beam measurement device 110 is arranged in the fifth straight section.

[0069] The second resonance sextupole magnet 43 and the first resonance sextupole magnet 41 are arranged as a pair of chromaticity sextupole magnets in the second straight section and the fifth straight section respectively. The second chromaticity sextupole magnet 44 and the first chromaticity sextupole magnet 42 are arranged as a pair of chromaticity sextupole magnets in the third straight section and the sixth straight section respectively.

[0070] The second injection bump magnet 52 and the third injection bump magnet 53 are arranged as a pair of injection bump magnets upstream and downstream of the injection cutting magnet and the injection electrostatic deflector in the first straight section, while the fourth injection bump magnet 54 and the first fourth injection bump magnet 51 are arranged as another pair of injection bump magnets in the second straight section and the sixth straight section respectively.

[0071] The deflection angle of each deflection dipole magnet is 30 degrees. Inside the first straight section between the first deflection dipole magnet group 11 and the second deflection dipole magnet group 12, a first horizontal focusing quadrupole magnet 31, a second injection bump magnet 52, an injection cut magnet 80, an injection electrostatic deflector 70, a third injection bump magnet 53, and a first horizontal defocusing quadrupole magnet 21 are arranged in sequence.

[0072] Inside the second straight section between the second deflection dipole magnet group 12 and the third deflection dipole magnet group 13, a second horizontal focusing quadrupole magnet 32, a fourth injection bump magnet 54, a second resonance sextupole magnet 43, an RF-KO slow extraction device 90, and a second horizontal defocusing quadrupole magnet 22 are arranged in sequence.

[0073] Inside the third straight section between the third deflection dipole magnet group 13 and the fourth deflection dipole magnet group 14, a third horizontal focusing quadrupole magnet 33, a second chromaticity sextupole magnet 44, an extraction electrostatic deflector 71, and a third horizontal defocusing quadrupole magnet 23 are arranged in sequence.

[0074] Inside the fourth straight section between the fourth deflection dipole magnet group 14 and the fifth deflection dipole magnet group 15, a fourth horizontal focusing quadrupole magnet 34, an extraction kick magnet 100, an extraction cut magnet 81, and a fourth horizontal defocusing quadrupole magnet 24 are arranged in sequence.

[0075] Inside the fifth straight section between the fifth deflection dipole magnet group 15 and the sixth deflection dipole magnet group 16, a fifth horizontal focusing quadrupole magnet 35, a first resonance sextupole magnet 41, a high-frequency acceleration device 60, and a fifth horizontal defocusing quadrupole magnet 25 are arranged in sequence.

[0076] Inside the first straight section between the sixth deflection dipole magnet group 16 and the first deflection dipole magnet group 11, a sixth horizontal focusing quadrupole magnet 36, a first chromaticity sextupole magnet 42, a first injection bump magnet 51, and a sixth horizontal defocusing quadrupole magnet 26 are arranged in sequence.

[0077] The synchrotron is designed to optionally control the RF-KO slow extraction device to apply a transverse radiofrequency field to the beam in the synchrotron ring as needed, and then make the extracted beam achieve slow extraction under the action of the electrostatic deflector and the extraction cut magnet, or control the extraction kick magnet to generate a pulsed magnetic field for deflecting particles, and then make the deflected beam achieve fast extraction under the action of the extraction cut magnet. The synchrotron according to this embodiment can flexibly switch between two working modes of slow extraction and fast extraction.

[0078] Figure 2 Then, the twiss parameters of an embodiment of the miniaturized multi-ion integrated synchrotron according to the present invention are schematically shown. In the figure, the starting points of three curves with different gray levels are marked with numbers. ① is β y , ② is βx where ③ is the horizontal dispersion D x . Figure 2 The figure schematically shows the positional relationship between the groups of dipole magnets and the defocusing quadrupole magnets and focusing quadrupole magnets before and after them.

[0079] In another embodiment not shown, the difference from the foregoing embodiment is only that the second resonance sextupole magnet 43 and the first resonance sextupole magnet 41 are respectively arranged as a pair of chromaticity sextupole magnets in the third straight section and the sixth straight section. The second chromaticity sextupole magnet 44 and the first chromaticity sextupole magnet 42 are respectively arranged as a pair of chromaticity sextupole magnets in the second straight section and the fifth straight section.

[0080] In another embodiment not shown, the difference from the foregoing embodiment is only that the second injection bump magnet 52 and the third injection bump magnet 53 are arranged as a pair of injection bump magnets upstream and downstream of the injection cut magnet and the injection electrostatic deflector in the first straight section, but the fourth injection bump magnet 54 and the first fourth injection bump magnet 51 are respectively arranged as another pair of injection bump magnets in the third straight section and the fifth straight section.

Claims

1. A miniaturized multi-ion integrated synchrotron, characterized in that, The synchrotron includes: At least six sets of deflection dipole magnets and a number of straight sections respectively connected between each set of deflection dipole magnets. Among them, the deflection dipole magnet sets and the straight sections are connected in series from beginning to end to form the synchrotron ring of the synchrotron. Among them, each set of deflection dipole magnets is composed of two deflection dipole magnets, and a pair of horizontal focusing quadrupole magnets and horizontal defocusing quadrupole magnets are arranged adjacent to the upstream and downstream of each set of deflection dipole magnets respectively. Among them, the injection cut-off magnet and the injection electrostatic deflector are jointly located in one of the straight sections, and the extraction cut-off magnet is located in another straight section. Among them, an extraction electrostatic deflector and an extraction kicker magnet are arranged in the straight section upstream of the straight section where the extraction cut-off magnet is located in the moving direction of the particles in the synchrotron ring. Among them, an RF-KO slow extraction device, a beam measurement device and a high-frequency acceleration device are arranged in the remaining straight sections other than the straight section where the injection cut-off magnet and the injection electrostatic deflector are located, the straight section where the extraction electrostatic deflector and the extraction kicker magnet are located, and the straight section where the extraction cut-off magnet is located. Among them, a pair of resonance sextupole magnets are respectively arranged centrosymmetrically in two straight sections that can meet the Hardt condition and have sufficient installation space, and a pair of chromaticity sextupole magnets are respectively arranged centrosymmetrically in two straight sections with sufficient installation space. Among them, a number of injection bump magnets are arranged upstream and downstream of the injection cut-off magnet and the injection electrostatic deflector. Among them, the synchrotron is designed to be adapted to optionally control the RF-KO slow extraction device, the extraction electrostatic deflector and the extraction cut-off magnet to achieve slow extraction as needed, or control the extraction kicker magnet and the extraction cut-off magnet to achieve fast extraction.

2. The miniaturized multi-ion integrated synchrotron according to claim 1, wherein In the straight section where the injection cut-off magnet and the injection electrostatic deflector are located, the injection bump magnets are arranged upstream and downstream of the injection cut-off magnet and the injection electrostatic deflector.

3. The miniaturized multi-ion integrated synchrotron according to claim 1, characterized in that, The injection bump magnets are arranged in the remaining straight sections at the upstream and downstream positions of the straight section where the injection cut-off magnet and the injection electrostatic deflector are located respectively.

4. The miniaturized multi-ion integrated synchrotron according to any one of claims 1 to 3, characterized in that, One resonance sextupole magnet is arranged in the straight section immediately downstream of the straight section where the extraction cut-off magnet is located in the moving direction of the particles in the synchrotron ring, and the other resonance sextupole magnet is arranged in the straight section immediately downstream of the straight section where the injection cut-off magnet and the injection electrostatic deflector are located in the moving direction of the particles in the synchrotron ring.

5. The miniaturized multi-ion integrated synchrotron according to claim 4, characterized in that, The synchrotron includes exactly six sets of deflection dipole magnet sets. Among them, each of the straight sections is sequentially the first straight section to the sixth straight section in the moving direction of the particles in the synchrotron ring, with the straight section where the injection cut-off magnet and the injection electrostatic deflector are located as the first straight section and the straight section where the extraction cut-off magnet is located as the fourth straight section.

6. The miniaturized multi-ion integrated synchrotron according to claim 5, wherein: The RF-KO slow extraction device is located in the second straight section, the extraction kicker magnet and the extraction electrostatic deflector are located in the third straight section, and the high-frequency acceleration device is arranged in one of the fifth straight section and the sixth straight section.

7. The miniaturized multi-ion integrated synchrotron according to claim 5, wherein: The high-frequency acceleration device is arranged in the second straight section, the extraction kicker magnet and the extraction electrostatic deflector are located in the third straight section, and the RF-KO slow extraction device is located in one of the fifth and sixth straight sections.

8. The miniaturized multi-ion integrated synchrotron according to claim 5, characterized in that, The resonant sextupole magnets are arranged in the second and fifth straight sections, and the chromaticity sextupole magnets are arranged in the third and sixth straight sections.

9. The miniaturized multi-ion integrated synchrotron according to claim 5, characterized in that, One pair of injection bump magnets is located in the first straight section, and the other pair of injection bump magnets are respectively located in the second and sixth straight sections.

10. The miniaturized multi-ion integrated synchrotron according to claim 5, characterized in that, One pair of injection bump magnets is located in the first straight section, and the other pair of injection bump magnets are respectively located in the third and fifth straight sections.

11. The miniaturized multi-ion integrated synchrotron according to claim 5, characterized in that, Each group of deflection dipole magnets has the same length or deflection angle.

12. The miniaturized multi-ion integrated synchrotron according to claim 5, characterized in that, Several groups of deflection dipole magnets have different lengths or deflection angles from each other.

13. The miniaturized multi-ion integrated synchrotron according to claim 11, wherein, The deflection angle of each deflection dipole magnet is 30 degrees.

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