A miniaturized multi-ion integrated synchrotron

The multi-ion synchrotron accelerator addresses non-uniform biological effects in proton/carbon ion therapy by enabling flexible switching between fast and slow extraction modes, achieving precise dose distribution and reduced tissue damage.

CN116507011BActive Publication Date: 2025-07-15TSINGHUA UNIVERSITY
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Patent Information

Application Number
CN202310611991.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-26
Publication Date
2025-07-15
Estimated Expiration
2043-05-26

AI Technical Summary

Technical Problem

In the existing single ion therapy of proton or carbon ion, the biological effect of the tumor center may not be the greatest, resulting in the possibility of tumor recurrence. In addition, the existing synchronous accelerator is difficult to achieve flexible switching between fast induced and slow induced, and cannot meet the fast switching needs of different ion types.

Method used

A miniaturized multi-ion integrated synchronous accelerator is designed, including six deflection diode magnet groups and linear segments. Combined with RF-KO slow lead-out device, lead-out electrostatic deflector, lead-out cutting magnet, etc., the slow lead-out or fast lead-out switching of particles is achieved. Through the combination of deflection diode magnets, focusing quadrupole magnets, resonant hexapole magnets, etc., the fast switching needs of different ion types are met.

Benefits of technology

The dose distribution and biological effect optimization of multi-ion therapy has been achieved, the accuracy of irradiation is improved, and the damage to surrounding normal tissues is reduced. It is suitable for routine dose-rate radiotherapy and flash therapy to meet different treatment needs.

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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.
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