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All-optical μ- acceleration in the laser wakefield

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摘要

Muons produced by the Bethe-Heitler process from laser wakefield accelerated electrons interacting with high Z materials have velocities close to the laser wakefield. It is possible to accelerate those muons with laser wakefield directly. Therefore for the first time we propose an all-optical “Generator and Booster” scheme to accelerate the produced muons by another laser wakefield to supply a prompt, compact, low cost and controllable muon source in laser laboratories. The trapping and acceleration of muons are analyzed by one-dimensional analytic model and verified by two-dimensional particle-in-cell (PIC) simulation. It is shown that muons can be trapped in a broad energy range and accelerated to higher energy than that of electrons for longer dephasing length. We further extrapolate the dependence of the maximum acceleration energy of muons with the laser wakefield relativistic factor γ and the relevant initial energy E0. It is shown that a maximum energy up to 15.2 GeV is promising with γ = 46 and E0 = 1.45 GeV on the existing short pulse laser facilities.

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作者单位:

    Research Center Laser Fusion CAEP
    Research Center of Laser Fusion
    China Academy of Engineering Physics Research Center of Laser Fusion
    Research Center of Laser Fusion, CAEP

引用该论文

Zhang Feng,Deng Zhigang,Shan Lianqiang,Zhang Zhimeng,Bi Bi,Liu Dongxiao,wang Weiwu,Yuan Zongqiang,Tian Chao,Yang Siqiang,zhang Bo,Gu Yuqiu. All-optical μ- acceleration in the laser wakefield[J].High Power Laser Science and Engineering,,():.