Transverse envelope dynamics of a 28.5 GeV electron beam in a long plasma

Journal Article · Mon Apr 01 04:00:00 EST 2002 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.88.154801· OSTI ID:797867

Clayton, C E ^[1]; Blue, B E; Dodd, E S; Joshi, C; Marsh, K A; Mori, W B; Wang, S; Catravas, P; Chattopadhyay, S; Esarey, E; Leemans, W P; Assmann, R; Decker, F J; Hogan, M J; Iverson, R; Raimondi, P; Siemann, R H; Walz, D; Katsouleas, T; Lee, S ; Muggli, P

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1. LBNL Library

The transverse dynamics of a 28.5 GeV electron beam propagating in a 1.4 m long, 0-2 x 10{sup 14} cm{sup -3} plasma are studied experimentally in the underdense or blow-out regime. The transverse component of the wake field excited by the short electron bunch focuses the bunch, which experiences multiple betatron oscillations as the plasma density is increased. The spot size variations are observed using optical transition radiation and Cherenkov radiation. In this regime, the behavior of the spot size as a function of the plasma density is well described by a simple beam envelope model. Dynamic changes of the beam envelope are observed by time resolving the Cherenkov light.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of High Energy Physics (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 797867
• Report Number(s): LBNL--50726; B& R KA0403011
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 88; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BETATRON OSCILLATIONS
CHERENKOV RADIATION
ELECTRON BEAMS
ELECTRONS
PLASMA
PLASMA DENSITY
PLASMA ELECTRON BEAM PROPAGATION
TRANSITION RADIATION