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Acceleration tube, method of accelerating charged particles, and medical linear accelerator

A technology of accelerating tube and accelerating cavity, which is applied to linear accelerators, pharmaceutical devices, and other medical devices, etc., can solve the problems of obtaining electron beams and complex realization methods, and achieve highly selective effects.

Active Publication Date: 2018-05-04
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, some homologous IGRT accelerating tubes can achieve a certain imaging quality, but the implementation method is more complicated
Overall, it is difficult for existing accelerator tubes to obtain electron beams with different energies through a simple structure

Method used

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  • Acceleration tube, method of accelerating charged particles, and medical linear accelerator
  • Acceleration tube, method of accelerating charged particles, and medical linear accelerator
  • Acceleration tube, method of accelerating charged particles, and medical linear accelerator

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Embodiment Construction

[0039] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] Such as figure 1 - as shown in Figure 8, figure 1 , image 3 , Figure 5 and Figure 7 The cross-sectional schematic diagrams of the accelerating tube in different modes are shown respectively, figure 2 , Figure 4 , Figure 6 and Figure 8 respectively show the figure 1 , image 3 , Figure 5 and Figure 7 Schematic diagram of the electric field distribution of each accelerating cavity corresponding to a certain moment. More specifically, in figure 2 , Figure 4 , Figure 6 And in Fig. 8, the abscissa represents the physical length of each accelerating cavity on the beam direction, and the ordinate represents the electric field intensity in each accelerating cavity, wherein, the electric field intensity is a vector, p...

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Abstract

Provided is an accelerating tube which comprises at least three accelerating cavities and side coupled cavities, wherein each side coupled cavity is coupled to the adjacent accelerating cavities and at least one side coupled cavity is provided a switch assembly therein. The switch assembly at least comprises a switch element. The switch element is movable so that a specific value of a coupling coefficient between the side coupled cavity and the accelerating cavity coupled thereto at the upstream of a beam channel to a coupling coefficient between the side coupled cavity and the accelerating cavity coupled thereto at the downstream of the beam channel is adjustable when the resonant coupling phase of the adjacent accelerating cavity coupled to the side coupled cavity is unchanged. Since the accelerating tube may vary among various modes according to beam energy requirements, beam energy is provided with good selectivity and an electron beam with continuously changed beam energy can be acquired.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to an accelerating tube, a method for accelerating charged particles in the accelerating tube and a medical linear accelerator. Background technique [0002] The accelerator tube is the key component of the accelerator. It accelerates the electrons injected from the electron gun to high energy under the action of radio frequency electric field, and finally hits the target to generate high energy X-rays. According to the different ways of accelerating electrons, accelerating tubes are divided into two types: traveling wave accelerating tubes and standing wave accelerating tubes. [0003] Image-guided radiation therapy (Image Guide Radiation Therapy, IGRT) is a radiotherapy technique that is widely used in the field of radiotherapy. The accelerator applying IGRT technology is the IGRT accelerator. [0004] IGRT accelerators usually use standing wave accelerating tubes to accelerate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H9/04
CPCH05H9/04H05H2277/11
Inventor 贺守波宋瑞英
Owner SHANGHAI UNITED IMAGING HEALTHCARE