Vacuum electron acceleration and bunch compression by a flat-top laser beam

Journal Article · Sat Sep 15 00:00:00 EDT 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2780816· OSTI ID:21024278

Wang, W; Wang, P X; Ho, Y K; Kong, Q; Gu, Y; Wang, S J ^[1]

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1. Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai, 200433 (China) and Shanghai Institute of Laser Plasma, Shanghai, 201800 (China)

The field intensity distribution and phase velocity characteristics of a flat-top laser beam are analyzed and discussed. The dynamics of electron acceleration in this kind of beam are investigated using three-dimensional test particle simulations. Compared with the standard (i.e., TEM{sub 00} mode) Gaussian beam, a flat-top laser beam has a stronger longitudinal electric field and a larger diffraction angle. These characteristics make it easier for electrons to be trapped and accelerated by the beam. With a flat-top shape, the laser beam is also applicable to the acceleration of low energy electron and bunch compression.

• OSTI ID: 21024278
• Journal Information: Review of Scientific Instruments, Vol. 78, Issue 9; Other Information: DOI: 10.1063/1.2780816; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
BEAM BUNCHING
COMPRESSION
DIFFRACTION
DISTRIBUTION
ELECTRIC FIELDS
ELECTRONS
LASERS
PARTICLE BEAMS
PHASE VELOCITY
SHAPE
SIMULATION
TEST PARTICLES
THREE-DIMENSIONAL CALCULATIONS
TRAPPING