Improving laser-accelerated proton beam divergence by electric and magnetic fields induced in flat channel-like targets

0563782 - FZÚ 2023 RIV GB eng J - Journal Article
Greplová Žáková, Martina - Pšikal, Jan - Schillaci, Francesco - Margarone, Daniele
Improving laser-accelerated proton beam divergence by electric and magnetic fields induced in flat channel-like targets.
Plasma Physics and Controlled Fusion. Roč. 63, č. 8 (2021), č. článku 085005. ISSN 0741-3335. E-ISSN 1361-6587
R&D Projects: GA MŠMT EF16_019/0000789; GA MŠMT LQ1606
Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Research Infrastructure: ELI Beamlines III - 90141
Institutional support: RVO:68378271
Keywords : laser-driven ion acceleration * divergence * magnetic multipole * channel target
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.532, year: 2021
Method of publishing: Limited access
https://doi.org/10.1088/1361-6587/ac031a

Improving parameters of laser-driven proton and ion beams becomes one of the most important goals in the field of laser acceleration in order to fulfill requirements of foreseen applications. This work presents parametric 2D and 3D particle-in-cell simulations of various target designs in order to reduce proton beam divergence without significant drop in maximum energies or in proton number. The optimal target design proved to be a channel-like target which produces not only a long-lasting focusing transverse electric field in contrast to a flat foil, but also a magnetic quadrupole with strong octupole component inside the guiding channel. A combination of both electric and magnetic features results in a strong proton beam divergence reduction, accompanied by a higher uniformity of the beam, which is studied as a function of proton energy.
Permanent Link: https://hdl.handle.net/11104/0335590