A beam line deflection magnet assembly, installation method, and rotating frame of the assembly

Abstract

The invention discloses a beam streamline deflection magnet assembly of a rotating frame. Flanges of the assembly are arranged inside a plurality of four-stage lens assemblies; and the deflection magnet assembly is arranged on an outer support body of the rotating frame at a certain inclination angle and is provided with a positioning base plate. The invention also discloses an installation methodof the deflection magnet assembly. The installation method comprises the following steps: the base plate is placed on an outer support plate of the rotating frame; concentric alignment of the plurality of four-stage lens and a vacuum pipeline is completed; the base plate is drawn out from the lower half part of the plurality of four-stage lens assemblies and then a flange 1 is connected with a flange 2; the lower half part of the plurality of the plurality of four-stage lens assemblies is lifted and restored to a height position before connecting the flanges; and the base plate of the plurality of the four-stage lens assemblies are inserted into the lower part of the plurality of four-stage lens assemblies. The invention also discloses a rotating machine frame for the deflection magnet, wherein the length of the outer support of the machine frame is matched with the length of the deflection magnet, and the deflection magnet is arranged with an inclination angle of 15 degrees to the machine frame. According to the invention, the weight of the external support of the rotating machine frame is reduced by one fifth.

Description

technical field [0001] The invention belongs to the technical field of proton therapy, and in particular relates to a beam line deflection magnet assembly, an installation method, and a rotating frame of the assembly. Background technique [0002] Proton therapy is a type of radiation therapy. After the protons enter the human body, a sharp dose peak is formed at the end of the range, called the Bragg peak. Broadening the Bragg peak by modulating the energy can make the Bragg peak cover the tumor. [0003] Such as figure 1 As shown, the rotating gantry is an important part of the proton therapy equipment. The rotating frame shell includes a cylindrical shell trunk with both ends penetrating and lying horizontally, an outer support body protruding from the upper surface of the cylindrical shell trunk, and an inner support body concave inside the shell. The beam current drawn from the accelerator passes through the transmission of the beam line, enters the rotating frame, ...

AI Technical Summary

Problems solved by technology

[0009] In view of the problems in the prior art, the present invention proposes a beam line deflection magnet assembly, an installation method, and a rotating frame of the assembly, the purpose of which is to solve the problem that the total length of the existing deflection magnet assembly cannot be reduced, resulting in the overall weight of the rotating frame Problems that are too heavy to rotate and difficult to diagnose medically

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