Proton treatment device beam diagnosis system

Abstract

The invention discloses a proton treatment device beam diagnosis system, which comprises a beam contour monitor, a beam position monitor, a collimator and a beam intensity monitor which are sequentially arranged along a proton transmission direction. Compared with the prior art, the flow intensity, the section size and shape, the mass center track position and the emittance of the proton beam current are independently measured; and the measurement equipment needs to be placed, installed and calibrated when each measurement is carried out. The beam diagnosis system is integrated, return signalsof the three beam monitors can be read at the same time, the flow intensity, the section size and shape, the mass center track position and the emittance of proton beams are measured in real time, and the beam diagnosis system has the advantages of being simple in measurement process, convenient to operate, high in real-time performance and the like. Besides, the system can detect beam halo information, provide the whole beam size including beam halo, prevent particles from colliding with the wall of the vacuum tube, and reduce beam loss.

Description

technical field [0001] The invention relates to a beam diagnosis system, in particular to a beam diagnosis system of a proton therapy device, and belongs to the technical field of application of the beam diagnosis system of a proton therapy device. Background technique [0002] Proton radiotherapy is currently internationally recognized as the most cutting-edge radiotherapy technology. When the protons are accelerated to about 70% of the speed of light by the synchrocyclotron, the proton rays are drawn out and injected into the human body. The dose released at the surface stage is very small, and all the energy is released when they reach the tumor target area, realizing "stereotactic blasting" of the tumor. [0003] Beam intensity, beam spot shape, and beam centroid trajectory position are the key factors affecting the beam quality required at the treatment end. Accurate detection of beam performance parameters is of great significance. As an important part of the proton t...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing beam detection system can only measure the current intensity, cross-sectional size and shape, center of mass trajectory position, and emissivity of the proton beam alone, and each measurement requires the measurement equipment Placement, installation, and calibration not only make the measurement process very cumbersome and complicated, but also lead to problems of low real-time performance and poor

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