研究目的
Investigating the acceleration of muons produced by the Bethe–Heitler process from laser wakefield accelerated electrons interacting with high Z materials using an all-optical ‘Generator and Booster’ scheme.
研究成果
The proposed all-optical ‘Generator and Booster’ scheme can supply a prompt, compact, low cost and controllable muon source. Muons can be trapped in a broad energy range and accelerated to higher energy than that of electrons for longer dephasing length. A maximum energy up to 15.2 GeV is promising with γ = 46 and E0 = 1.45 GeV on existing short pulse laser facilities.
研究不足
The study focuses on μ? acceleration, and the feasibility of μ+ acceleration in a nonlinear regime is not explored. The extrapolation to higher energy muon acceleration requires longer dephasing time and lower plasma density, which may not be currently achievable.
1：Experimental Design and Method Selection:
The study employs a one-dimensional analytic model and two-dimensional particle-in-cell (PIC) simulation to analyze the trapping and acceleration of muons in a laser wakefield.
2：Sample Selection and Data Sources:
Muons are generated by the Bethe–Heitler process from laser wakefield accelerated electrons interacting with high Z materials.
3：List of Experimental Equipment and Materials:
A linearly polarized pulse of wavelength λ0 =
4：8 μm, normalized peak amplitude a0 = 2, pulse duration 33 fs and full width at half-maximum (FWHM) spot size 18 μm is used. Experimental Procedures and Operational Workflow:
The motion of muons is analyzed in a typical laser wakefield, and their acceleration is simulated.
5：Data Analysis Methods:
The trajectories of muons are calculated, and their acceleration energy is recorded.
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