Radial oscillations of a relativistic electron beam in an accelerating gap

Journal Article · Wed Apr 01 04:00:00 EST 1981 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.329063· OSTI ID:6535055

Genoni, T C; Franz, M R; Epstein, B G; Miller, R B; Poukey, J W

Radial oscillations of hollow, relativistic electron beams have been observed on Sandia's RADLAC I, a multistage high-current linear induction accelerator. These oscillations, which arise because the presence of the accelerating gaps prevents radial force balance, can be responsible for poor beam quality and low current-transport efficiency. The method of magnetic field shaping to suppress oscillations is investigated. Two analytical models are formulated to derive nonuniform fields necessary to maintain force balance in a single-gap geometry. Particle code simulations have been made to test beam propagation in contoured fields. Field shaping does suppress oscillations and is not sensitive to fluctuations in beam and gap parameters.

• Research Organization: Air Force Weapons Laboratory, Kirtland Air Force Base, New Mexico 87117
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6535055
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
ACCELERATORS
BEAM PROFILES
BEAMS
COMPARATIVE EVALUATIONS
COMPUTER CODES
COMPUTERIZED SIMULATION
DATA
EFFICIENCY
ELECTRON BEAMS
ENERGY RANGE
INFORMATION
LEPTON BEAMS
LINEAR ACCELERATORS
MAGNETIC FIELDS
MATHEMATICAL MODELS
OSCILLATIONS
PARTICLE BEAMS
RELATIVISTIC RANGE
SIMULATION