Plasma gradient controlled injection and postacceleration of high quality electron bunches

Journal Article · Thu Jan 22 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3080892· OSTI ID:21255206

Geddes, C G. R.; Cormier-Michel, E; Nakamura, K; Schroeder, C B; Toth, Cs ^[1]; Esarey, E ^[1]; U Nevada, Reno ^[2]; Plateau, G R ^[1]; Bruhwiler, D L ^[3]; Cary, J R ^[3]; U Colorado, Boulder ^[2]; Leemans, W P ^[1]

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

Plasma density gradient control of wake phase velocity and trapping threshold in a laser wakefield accelerator produced electron bunches with absolute longitudinal and transverse momentum spreads more than ten 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, stable over a week of operation. Simulations validated against diagnostics show that use of such bunches as a wakefield accelerator injector can produce stable beams with 0.2 MeV/c-class momentum spread at high energies. Preservation of bunch momentum spread requires high simulation momentum accuracy, and related self-trapped simulations showed that high order particle weight effectively suppresses simulation momentum errors allowing design of low emittance stages.

• OSTI ID: 21255206
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1086; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAM BUNCHING
BEAM INJECTION
ELECTRON BEAMS
LASERS
PHASE VELOCITY
PLASMA
PLASMA DENSITY
PLASMA PRODUCTION
SIMULATION
TRANSVERSE MOMENTUM
TRAPPING
WAKEFIELD ACCELERATORS