Year: 2025
Type: article
Abstract: Compact spin-polarized positron accelerators play a major role in promoting significant positron application research, which typically require high acceleration gradients and polarization degrees, both of which, however, are still greatly challenging. Here, we put forward a spin-polarized positron acceleration method, which employs an ultrarelativistic high-density electron beam passing through any hole of multilayer microhole array films to excite strong electrostatic and transition radiation fields. Positrons in the polarized electron-positron pair plasma, filled in the front of the multilayer films, can be captured, accelerated, and focused by the electrostatic and transition radiation fields, while maintaining high polarization degrees of above 90% and high acceleration gradients of about TeV/m. A multilayer design allows for capturing more positrons and achieving cascade acceleration. Our method offers promising solutions to the issues of accelerator miniaturization, positron injection, and polarization preservation, and also can be used to accelerate other charged particles.
Source: Physical review. E
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Natural Science Foundation of China, American University of Sharjah, Fundo para o Desenvolvimento das Ciências e da Tecnologia, China Institute of Atomic Energy, Central University Basic Research Fund of China, National Key Research and Development Program of China, Science and Technology on Plasma Physics Laboratory, China Academy of Engineering Physics
OpenAlex ID: W4408815717