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Injection device and injection method for medical proton synchrotron

A synchrotron and injection device technology, applied in magnetic resonance accelerators, other medical devices, radiotherapy, etc., can solve problems such as the inability to support multi-layer energy extraction, the small number of accelerator charges, and the reduction of synchrotron treatment time, so as to increase the number of protons. The number of storage, the number of components is small, the effect of reducing the cost of treatment

Active Publication Date: 2016-02-24
SHANGHAI AIPUQIANG PARTICLE EQUIP
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AI Technical Summary

Problems solved by technology

Traditional synchrotrons used for energy boost generally use single-turn on-axis injection, and use fast dipole magnets to kick the injection beam into the center orbit. The advantage lies in high injection efficiency, but the disadvantage is that due to the space charge effect and the current Strict restrictions make the amount of charge accumulated in the accelerator small, so the existing proton synchrotron cannot support multi-layer energy extraction technology in a single cycle to reduce the treatment time of the synchrotron

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  • Injection device and injection method for medical proton synchrotron
  • Injection device and injection method for medical proton synchrotron
  • Injection device and injection method for medical proton synchrotron

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Embodiment Construction

[0022] Below in conjunction with the drawings, preferred embodiments of the present invention are given and described in detail.

[0023] First, the concept basis of the present invention will be briefly described.

[0024] Through the research, it is found that the main factor limiting the number of particles stored in the synchrotron is the space charge effect near the injected energy, which causes the loss of particles caused by crossing the resonance line. The strength of the space charge effect mainly depends on the number of stored particles, the injected energy and the emittance of the stored beam:

[0025] Δ ν = - r p N 2 πϵ r m s β 2 γ ...

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Abstract

The invention relates to an injection device and an injection method for medical proton synchrotron. The device comprises a first straight section, a first deflection dipole magnet, a second straight section, a second deflection dipole magnet and a third straight section, which are sequentially connected with one another. According to the injection device and the injection method, the injection function of the medical proton synchrotron is achieved by utilizing as few elements as possible; and maximum filling of phase spaces of the horizontal emittance and the vertical emittance of the proton synchrotron is achieved, so that the proton storage number of the proton synchrotron is effectively increased, and a multi-level energy lead-out technology within a single cycle can be supported. The adopted elements are small in number and simple to control; the construction cost of the device and a building can be reduced to the maximal extent; and the treatment cost is reduced.

Description

technical field [0001] The invention relates to an injection device and an injection method of a medical proton synchrotron used for tumor treatment. Background technique [0002] The excellent Bragg peak characteristics of proton in the depth direction make it one of the most advanced methods in tumor treatment. At present, there are more and more proton therapy devices and treatment centers in the world. The most advanced scanning technology used in the treatment can realize the precise treatment of three-dimensional conformal intensity modulation, and maximize the radiotherapy requirements that the irradiation dose in the target area is as large as possible and the irradiation dose of surrounding sensitive tissues is as small as possible. In traditional synchrotrons, especially proton synchrotrons, each extraction cycle corresponds to an extraction energy. Injection, power-up (called rising edge) and normalization cycle (called falling edge) take a long time, and the eff...

Claims

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Application Information

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IPC IPC(8): H05H7/08H05H13/04
CPCH05H7/08H05H13/04H05H2007/087H05H2277/11
Inventor 张满洲谢修璀李德明王坤
Owner SHANGHAI AIPUQIANG PARTICLE EQUIP
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