Preliminary design of laser accelerator beam line

TL;DR

This paper presents the initial design of a beam line for a compact laser plasma accelerator at Peking University, focusing on delivering proton beams with specific parameters for various experiments.

Contribution

It provides a preliminary design of the beam line based on experimental data and simulations for a laser plasma accelerator.

Findings

Simulated 15MeV proton beam with 1% energy spread.

Achieved a final spot radius of 9mm in simulations.

Designed to deliver proton beams suitable for multiple experimental needs.

Abstract

A Compact laser plasma accelerator (CLAPA) is being built in Peking University, which is based on RPA-PSA mechanism or other acceleration mechanisms. According to the beam parameters from preparatory experiments and theoretical simulations, the beam line is preliminarily designed. The beam line is mainly constituted by common transport elements to deliver proton beam with the energy of 1~50MeV, energy spread of 0~1% and current of 0~108 proton per pulse to satisfy the requirement of different experiments. The simulation result of 15MeV proton beam with an energy spread of 1%, current of 1x108 proton per pulse and final spot radius of 9mm is presented in this paper.