Hadron beam current monitoring device and method based on pixel sensor chip

Abstract

The hadron beam current monitoring device based on the pixel sensor chip includes a vertical support and two sets of independent two-dimensional monitoring devices, and the two sets of two-dimensional monitoring devices are fixed on the two vertical plates of the vertical support; each set of two-dimensional monitoring devices Both consist of silicon pixel chips, chip bonding circuit boards, anode plates, and cathode plates. The monitoring method of the device is as follows: the hadron beam passes through the gas above the silicon pixel chip, ionizes the gas to generate electron clusters, and the electron clusters drift under the action of the electric field above the silicon pixel chip, and are collected by the corresponding pixels on the silicon pixel chip; According to the response of the pixels on the silicon pixel chip, the two-dimensional information of the hadron beam on the plane where the silicon pixel chip is located is obtained; Reconstruction of the three-dimensional distribution of hadron beams. The invention monitors the three-dimensional distribution information of the hadron beam in real time, and has beam non-interception, radiation resistance and high position resolution.

Description

technical field [0001] The invention relates to the field of hadron therapy, in particular to a hadron beam current monitoring device and method based on a pixel sensor chip, which is used for real-time monitoring of hadron beam current. Background technique [0002] After the hadron enters the matter, it will not release a large amount of energy immediately, but will release most of its energy only at the position where the hadron is about to stop, forming a sharp energy peak - the Bragg peak, which is called the Bragg peak effect. According to the Bragg peak effect, using hadrons instead of photons and electrons for tumor treatment can avoid healthy tissues around the tumor, inject more radiation dose into the tumor, and have stronger biological effects than electrons and photons. [0003] Currently, there are two beam delivery techniques for hadron therapy: beam scattering and beam scanning. Beam scattering technology uses scatterers to diverge the beam, and then uses cu...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a hadron beam monitoring device and method based on a pixel sensor chip for the problem that the hadron therapy of the existing beam scanning technology needs to monitor the intensity and position distribution of the beam in real time , using silicon pixel chips to monitor hadron beams in real time, with beam non-interception, radiation resistance and high position resolution

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