Gamma ray source device based on electron linear acceleration

Abstract

The invention discloses a gamma ray source device based on electron linear acceleration. The device comprises an S-band or C-band photocathode electron gun used for generating and transmitting an electron beam, an S-band or C-band beam bunching cavity used for compressing the beam length of the passing electron beam, an S-band or C-band accelerating tube used for freezing the beam length and the emittance of the passing electron beam, an X-band accelerating tube group used for accelerating the passing electron beam, a quadrupole lens group used for focusing the passing electron beam, and an action chamber used for carrying out inverse Compton scattering on a scattered laser and the electron beam entering the action chamber to generate gamma rays, wherein the S-band or C-band photocathode electron gun, the S-band or C-band beam bunching cavity, the S-band or C-band accelerating tube, the X-band accelerating tube group, the quadrupole lens group and the action chamber are sequentially arranged along the linear motion direction of the electron beam. According to the gamma ray source device based on electronic linear acceleration, miniaturization of a gamma ray source is achieved, an occupied space is reduced, generated gamma rays are large in range and quasi-monoenergetic, and therefore the gamma ray source device based on electronic linear acceleration can be flexibly applied to various scenes and can meet the requirements for spent fuel detection, object security check and the like.

Description

technical field [0001] The invention relates to a gamma ray source, in particular to a gamma ray source device based on electron linear acceleration. Background technique [0002] Gamma ray is a kind of electromagnetic wave with the highest frequency, and its photon has high energy and strong penetrating ability. Natural sources of gamma mainly come from the secondary radiation of cosmic ray particles interacting with the atmosphere, and the gamma decay of radioactive isotopes in nature. Artificial gamma rays are mainly produced based on nuclear fission, bremsstrahlung, synchrotron radiation, and inverse Compton scattering. Compared with common bremsstrahlung-based ray tubes and synchrotron-based gamma-ray sources, gamma-ray sources based on inverse Compton scattering have good directivity, high brightness, short time structure, high energy and Adjustable and many other advantages, it has broad application prospects in radiation imaging, ultrafast physical process research...

AI Technical Summary

Problems solved by technology

[0003]However, the existing inverse Compton scattering gamma ray devices based on storage rings and high-energy accelerators usually have a length of On the order of hundreds of meters, it is difficult to realize the compactness of the device and the flexible movement of the device, and the existing gamma ray source is not enough to support the research of gamma ray imaging and nuclear resonance fluorescence in special scenarios such as nuclear waste diagnosis

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