Particle accelerator based on laser-driven dielectric slice stacking

Abstract

The invention discloses a particle accelerator based on laser-driven dielectric slice stacking, which is a multi-medium right-angled prism composed of a medium prism with a right-angled triangular cross section and at least one medium prism with a right-angled trapezoidal cross section; all the medium prisms are numbered from 1 according to the incident direction of laser pulses, wherein the firstdielectric prism is a right trapezoid dielectric prism, the last dielectric prism is a right triangle dielectric prism, and the lower bottom of the cross section of the first dielectric prism is equal to the side length of the right-angle side of the cross section of the multi-dielectric right-angle prism, which is incident by a laser pulse; the included angle between the bevel edge and the lowerbottom of the cross section of each right-angled trapezoid dielectric prism is equal to the base angle of the multi-medium right-angled triangular prism, and one acute angle of the cross section of each right-angled trapezoid dielectric prism is equal to the base angle of the multi-medium right-angled triangular prism. According to the method, particle deflection is avoided under the condition that no additional measures are taken, and synchronization of a laser field and the particles can be met without an additional wavefront correction technology.

Description

technical field [0001] The invention relates to a particle accelerator based on the stacking of laser-driven dielectric sheets, belonging to the technical field of particle accelerators. Background technique [0002] As an important weapon of contemporary scientific research, particle accelerators not only have important scientific value, but also have broad commercial prospects. However, traditional accelerators have high energy consumption and high cost, which greatly limits their application range, especially in some special fields (such as aerospace and other scenarios that require high portability and low energy consumption), and the application and promotion of accelerators is difficult. . The development of new system accelerators, especially the realization of integrated and portable chip-level accelerators has always been the goal pursued by researchers. [0003] The dielectric laser accelerator (DLA) based on laser-driven micro-nanostructures is one of the most p...

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Problems solved by technology

[0004] However, the existing DLA faces the following problems in practical application: 1) DLA must adopt a periodic structure with a very small period, which makes it difficult to process, and at the same time limits the charge amount of particle clusters that can be accelerated; 2) The accelerated structure of DLA is stored in the laser There is serious dispersion in transmission, and the laser utilization rate is low; 3) DLA has serious particle deflection, which limits the acceleration length of particles

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