Experimental Observation of Plasma Wake-Field Acceleration

Rosenzweig, James; Cline, D.; Cole, B.; Figueroa, H.; Gai, W.; Konecny, R.; Norem, J.; Schoessow, P.; Simpson, J.

doi:10.1103/physrevlett.61.98

Cited by 250 publications

(123 citation statements)

References 5 publications

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“…Plasmabased acceleration is realized by using an intense laser [1] or charged-particle beam [3][4][5] to excite large amplitude electron plasma waves with relativistic phase velocity. The electric field amplitude of the plasma wave (space-charge oscillation) can be several orders of magnitude greater than conventional accelerators, on the order of E 0 = cm e ω p /e, or…”

Section: Introductionmentioning

confidence: 99%

Coupled beam hose and self-modulation instabilities in overdense plasma

et al. 2012

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Transverse stability of the drive beam is critical to plasma wakefield accelerators. A long, relativistic particle beam propagating in an overdense plasma is subject to beam envelope modulation and centroid displacement (hosing) instabilities. Coupled equations for the beam centroid and envelope are derived and solved. It is shown that the hosing growth rate is comparable to selfmodulation, and coupling of the self-modulation enhances beam hosing and induces harmonic content. Large amounts of hosing can significantly alter the structure of the plasma wakefields.

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Section: Introductionmentioning

confidence: 99%

Coupled beam hose and self-modulation instabilities in overdense plasma

et al. 2012

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“…Plasma waves with relativistic phase velocities may be excited by the ponderomotive force of an intense laser 1 or the space-charge force of a charged particle beam, i.e., a plasma wakefield accelerator (PWFA). [2][3][4] It has been proposed to drive a PWFA with a highly relativistic proton beam, such as those available at CERN (European Organization for Nuclear Research). 5,6 Plasma wave excitation requires a drive beam density profile with frequency components at the plasma frequency, i.e., a beam density longitudinal scale length on the order of…”

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confidence: 99%

Particle beam self-modulation instability in tapered and inhomogeneous plasma

et al. 2012

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The particle beam self-modulation instability in tapered and inhomogeneous plasmas is analyzed via an evolution equation for the beam radius. For a sufficiently fast taper the instability is suppressed, and the condition for growth suppression is derived. The form of the taper to phase lock a trailing witness bunch in the plasma wave driven by a self-modulated beam is determined, which can increase the energy gain by several orders of magnitude. Growth of the instability places stringent constraints on the initial background plasma density fluctuations.

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“…These fields are then used to accelerate a low-current trailing beam. 2,3 We report here experimental measurements on high-current (kA level) relativistic electron beams whose transport is strongly influenced by the self-induced wakefields.…”

Section: Introductionmentioning

confidence: 99%