Plasma-Density-Gradient Injection of Low Absolute-Momentum-Spread Electron Bunches

Journal Article · Fri May 30 04:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.215004· OSTI ID:21132470

Geddes, C G. R.; Nakamura, K; Plateau, G R; Toth, Cs; Cormier-Michel, E; Esarey, E; Schroeder, C B; Leemans, W P ^[1]; Cary, J R ^[2]

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1. Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, California 94720 (United States)
2. Tech-X Corporation, 5621 Arapahoe Ave. Ste. A, Boulder, Colorado 80303 (United States)

Plasma density gradients in a gas jet were used to control the wake phase velocity and trapping threshold in a laser wakefield accelerator, producing stable electron bunches with longitudinal and transverse momentum spreads more than 10 times lower than in previous experiments (0.17 and 0.02 MeV/c FWHM, respectively) and with central momenta of 0.76{+-}0.02 MeV/c. Transition radiation measurements combined with simulations indicated that the bunches can be used as a wakefield accelerator injector to produce stable beams with 0.2 MeV/c-class momentum spread at high energies.

• OSTI ID: 21132470
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 100; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BEAM INJECTION
ELECTRON BEAMS
ELECTRONS
KEV RANGE 100-1000
LASERS
PHASE VELOCITY
PLASMA DENSITY
SIMULATION
TRANSITION RADIATION
TRANSVERSE MOMENTUM
WAKEFIELD ACCELERATORS