Photo-anode proton source

Abstract

The invention discloses a photo-anode proton source which is suitable for high-resolution proton photographing, proton diagnosis and treatment, and generation of high-energy density matters, and is used as an injector of a high-energy proton accelerator. The photo-anode proton source comprises a laser light source and a vacuum target chamber. An ultrashort ultrastrong laser beam irradiates on a planar mirror in the target chamber by penetrating a vacuum target chamber window; the reflected laser beam is focused on a hydrogen-enriched magnetic tape target by an off-axis parabolic reflection focusing mirror, so as to generate an MeV-order continuous spectrum proton beam; energy spectrums and divergence angles of the proton beam can be improved through a back beam current quality adjustment system; collimation of the beam current can be realized by utilizing a solenoid; the energy spectrum of the collimated beam current can be modulated after the collimated beam current passes through an RF (radio frequency) chamber to generate a series of quasi energy peaks; and finally the beam current passes through an energy selection system with a slit-bending iron-slit structure to generate a needed single energy proton beam. The photo-anode proton source is simple in structure, and has good collimation, monochromaticity and stability.

Description

technical field [0001] The invention belongs to the field of laser plasma, and in particular relates to a photoanode proton source. It is used for high-resolution proton photography, proton diagnosis and treatment, production of high-energy-density matter, and as an injector for high-energy proton accelerators. Background technique [0002] Traditional proton linear accelerators have the characteristics of bulky size and complex structure, including injectors, low-energy beam delivery systems, and a complete set of acceleration structures from low-energy to high-energy. The injector of a traditional proton linear accelerator usually uses a pressure doubler accelerator, which consists of a high-voltage generator, an accelerating tube, and a particle source, and can generate low-energy proton beams of tens of keV. The generated low-energy beam needs to go through a complex low-energy beam transport system for shaping, focusing, and focusing, so that it meets the phase space ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of large divergence angle, wide energy spectrum and poor stability of laser-accelerated proton beams in the prior art, as well as the problems of large volume and complex structure of traditional proton accelerators, the present invention provides a photoanode proton source

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