Plasma density gradient injection of low absolute momentum spread electron bunches

Journal Article · Sat Dec 22 00:00:00 EST 2007 · Physical Review Letters

OSTI ID:943964

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

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 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. 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.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Accelerator& Fusion Research Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 943964
• Report Number(s): LBNL-1232E; PRLTAO; TRN: US0900481
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

43
ELECTRONS
LASERS
PHASE VELOCITY
PLASMA DENSITY
TRANSITION RADIATION
TRANSVERSE MOMENTUM
TRAPPING
WAKEFIELD ACCELERATORS
plasma laser wakefield accelerator