Journal
NEW JOURNAL OF PHYSICS
Volume 24, Issue 7, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1367-2630/ac81e2
Keywords
laser wakefield acceleration; capillary discharge waveguide; ionization-induced injection; high-energy electron beams; particle-in-cell-simulations
Categories
Funding
- National Natural Science Foundation of China [11974251, 12105180, 11904377, 11905279, 11127901, 11875065, 11991072]
- Innovation Program of Shanghai Municipal Education Commission [2021-01-07-00-02-E00118]
- State Key Laboratory Program of the Chinese Ministry of Science and Technology
- Youth Innovation Promotion Association, CAS [Y201952]
- Strategic Priority Research Program (B) [XDB16]
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A multi-GeV electron beam with energy up to 3.2 GeV and 9.7% rms energy spread was achieved through a hybrid capillary discharge waveguide and a cascaded laser wakefield acceleration scheme.
Based on a 6 cm-long two-segment hybrid capillary discharge waveguide, a multi-GeV electron beam with energy up to 3.2 GeV and 9.7% rms energy spread was achieved in a cascaded laser wakefield acceleration scheme, powered by an on-target 210 TW laser pulse. The electron beam was trapped in the first segment via ionization-induced injection, and then seeded into the second segment for further acceleration. The long-distance stable guiding of the laser pulse and suppression of the dark current inside the second-segment capillary played an important role in the generation of high-energy electron beams, as demonstrated by quasi-three-dimensional particle-in-cell simulations.
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