TY  - JOUR
AU  - Jalas, Sören
AU  - Kirchen, Manuel
AU  - Messner, Philipp
AU  - Winkler, Paul
AU  - Hübner, Lars
AU  - Dirkwinkel, Julian
AU  - Schnepp, Matthias
AU  - Lehe, Remi
AU  - Maier, Andreas
TI  - Bayesian Optimization of a Laser-Plasma Accelerator
JO  - Physical review letters
VL  - 126
IS  - 10
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PUBDB-2021-00902
SP  - 104801
PY  - 2021
AB  - Generating 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
KW  - Plasma and Beam Physics (autogen)
LB  - PUB:(DE-HGF)16
C6  - pmid:33784117
UR  - <Go to ISI:>//WOS:000627631100006
DO  - DOI:10.1103/PhysRevLett.126.104801
UR  - https://bib-pubdb1.desy.de/record/455042
ER  -