Transverse Emittance and Current of Multi-GeV Trapped Electrons in a Plasma Wakefield Accelerator

Journal Article · Sat Oct 17 00:00:00 EDT 2009 · Phys.Rev.ST Accel.Beams 12:051302,2009

DOI:https://doi.org/10.1103/PhysRevSTAB.12.051302· OSTI ID:968530

Kirby, N; Blumenfeld, I; Clayton, C E; Decker, F J; Hogan, M J; Huang, C; Ischebeck, R; Iverson, R H; Joshi, C; Katsouleas, T; Lu, W; Marsh, K A; Martins, S F; Mori, W B; Muggli, P; Oz, E; Siemann, R H; Walz, D R; Zhou, M

Multi-GeV trapped electron bunches in a plasma wakefield accelerator (PWFA) are observed with normalized transverse emittance divided by peak current, {epsilon}{sub N,x}/I{sub t}, below the level of 0.2 {micro}m/kA. A theoretical model of the trapped electron emittance, developed here, indicates that emittance scales inversely with the square root of the plasma density in the nonlinear 'bubble' regime of the PWFA. This model and simulations indicate that the observed values of {epsilon}{sub N,x}/I{sub t} result from multi-GeV trapped electron bunches with emittances of a few {micro}m and multi-kA peak currents.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 968530
• Report Number(s): SLAC-PUB-13752; TRN: US0904694
• Journal Information: Phys.Rev.ST Accel.Beams 12:051302,2009, Journal Name: Phys.Rev.ST Accel.Beams 12:051302,2009
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
PLASMA
PLASMA DENSITY
TRAPPED ELECTRONS
WAKEFIELD ACCELERATORS
Accelerators
General Physics
ACCPHY
PHYS