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000455042 1001_ $$0P:(DE-H253)PIP1027758$$aJalas, Sören$$b0$$eCorresponding author
000455042 245__ $$aBayesian Optimization of a Laser-Plasma Accelerator
000455042 260__ $$aCollege Park, Md.$$bAPS$$c2021
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000455042 520__ $$aGenerating high-quality laser-plasma accelerated electron beams requires carefully balancing a plethora of physical effects and is therefore challenging—both conceptually and in experiments. Here, we use Bayesian optimization of key laser and plasma parameters to flatten the longitudinal phase space of an ionization-injected electron bunch via optimal beam loading. We first study the concept with particle-in-cell simulations and then demonstrate it in experiments. Starting from an arbitrary set point, the plasma accelerator autonomously tunes the beam energy spread to the subpercent level at 254 MeV and 4.7 pC/MeV spectral density. Finally, we study a robust regime, which improves the stability of the laser-plasma accelerator and delivers sub-five-percent rms energy spread beams for 90% of all shots.
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000455042 650_7 $$2autogen$$aPlasma and Beam Physics
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000455042 7001_ $$0P:(DE-H253)PIP1021382$$aKirchen, Manuel$$b1
000455042 7001_ $$0P:(DE-H253)PIP1022096$$aMessner, Philipp$$b2
000455042 7001_ $$0P:(DE-H253)PIP1016482$$aWinkler, Paul$$b3
000455042 7001_ $$0P:(DE-H253)PIP1023364$$aHübner, Lars$$b4
000455042 7001_ $$0P:(DE-H253)PIP1093261$$aDirkwinkel, Julian$$b5
000455042 7001_ $$0P:(DE-H253)PIP1014001$$aSchnepp, Matthias$$b6
000455042 7001_ $$0P:(DE-HGF)0$$aLehe, Remi$$b7
000455042 7001_ $$0P:(DE-H253)PIP1014692$$aMaier, Andreas$$b8$$udesy
000455042 773__ $$0PERI:(DE-600)1472655-5$$a10.1103/PhysRevLett.126.104801$$gVol. 126, no. 10, p. 104801$$n10$$p104801$$tPhysical review letters$$v126$$x0031-9007$$y2021
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