Compact multi-ion accelerator treatment device and application thereof

Abstract

The invention relates to a compact multi-ion accelerator treatment device and application thereof, the compact multi-ion accelerator treatment device comprises an integrated acceleration structure with a radio frequency quadrupole field acceleration characteristic and a positive cross rod drift tube linear acceleration characteristic, and the integrated acceleration structure comprises a radio frequency quadrupole field acceleration part and a positive cross rod drift tube linear acceleration part; the beam output end of the radio frequency quadrupole field acceleration part is connected with the beam input end of the positive cross rod drift tube linear acceleration part, and the two parts are of an integrated cavity structure with the same center line; the positive cross rod drift tube linear acceleration part comprises a first acceleration section, a second acceleration section and a three-combination quadrupole lens positioned between the first acceleration section and the second acceleration section; a plurality of zero-degree phase acceleration gaps are arranged between the beam output end of the radio frequency quadrupole field acceleration part and the longitudinal bunching section in the first acceleration section, and the phase change of the longitudinal bunching section is a gradient phase. According to the treatment device, the overall structural design that the linear accelerator is arranged in the synchrotron is adopted, and the occupied area of the device is greatly reduced.

Description

technical field [0001] The invention relates to a compact accelerator treatment device capable of providing various ions and its application, belonging to the technical field of medical equipment. Background technique [0002] Accelerator therapy devices can achieve precise killing of tumor cells and are the most advanced radiotherapy technology in the world. After more than 60 years of development, there are more than 100 medical proton and heavy ion accelerator therapy devices in operation and under construction in the world. huge application potential. However, there are still some difficulties in the comprehensive market promotion of the current accelerator therapy device, the most prominent of which are the large scale, low performance and high energy consumption of the device. [0003] The linear accelerator is the injector of the ion therapy device. The core acceleration part of the traditional linear accelerator device is composed of independent RFQ and DTL, and the...

AI Technical Summary

Problems solved by technology

The operating bandwidth of the system is generally in the range of 0 ~ 10MHz. The harmonic components outside the operating bandwidth can be filtered out by adding filters, but the harmonics in the passband cannot be suppressed by filters.

Therefore, the cavity voltage harmonic content of the magnetic alloy high-frequency system is rich, and the power of odd harmonics is large, which affects the beam quality. How to reduce the high-order harmonic components has become an important issue in the high-frequency system of the new generation of treatment devices.