Energy-adjustable electronic linear accelerator

Abstract

Disclosed is an adjustable-energy electron accelerator. Its electron accelerating pipe comprises the traveling wave accelerating section [6], the second travelling wave or standing wave accelerating section [5] and the microwave binding-flow hole [7]. The traveling wave accelerating section [6] is ahead, which follow the Standing wave accelerating section [5], the microwave power first feed in the traveling wave accelerating section [6], and is connected with the entry of the standing wave accelerating section [5]. The electron beam firstly enter the micro binding-flow hole via the traveling wave accelerating section, then enter the second traveling wave or standing wave accelerating section [5]. The present invention can decelerate the electron beam in the accelerating structure.

Description

1. Field of invention: [0001] The invention relates to an energy-adjustable electron linear accelerator, which belongs to the technical field of high-energy physics. 2. Background technology: [0002] When using electron linear accelerators to treat cancer and other diseases, it is necessary to use beams of different energies for treatment according to different cases. A ray beam of about 6 MeV is used at a low level, and a ray beam of about 20 MeV is used at a high level, and some ray beam energy levels between the above-mentioned energies are also set between this. Among the medical electron linear accelerators, the ones with the highest output beam energy up to about 20 MeV are called high-energy machines, and the rest are medium and low-energy machines. The high-energy medical electron linear accelerator has the most uses and the highest technical content. It has multiple electron beams, which can be used for multiple purposes. It can also generate X-ray beams with a la...

AI Technical Summary

Problems solved by technology

[0004] But these technologies also have some deficiencies: 1. The "switching" technology is mainly used to obtain two-photon ray beams, and other energy blocks must be adjusted with traditional technologies on this basis, and the treatment energy optimized by the specific energy spectrum cannot be obtained. Lower optimized beam

2. The action of the modulation mechanism will still have some influence on the electric field of the bunching section that is not expected to be changed

3. They are more difficult to design and manufacture

4. On the high-energy medical electron linear accelerator, the power source generally adopts a microwave klystron of about 5 MW in the S-band. Circulators subject to peak power greater than 5 megawatts as isolation devices

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