Current limits in linear accelerators

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

DOI:https://doi.org/10.1063/1.328822· OSTI ID:6624380

Reiser, M

In recent years considerable interest has developed in the use of linear accelerators for various high-current applications (radiation testing facilities, neutron spallation sources, heavy-ion fusion, etc.). The beam dynamics and current limits in a linear accelerator are determined largely by the periodicity and phase-space acceptance of the external focusing system and the particle oscillation frequencies (or phase shifts per focusing period), both without the space-charge forces and with the space-charge forces of the particle bunch. General formulas for the transverse and longitudinal current limits in terms of these fundamental quantities are derived. The relationships with the actual accelerator and particle beam parameters are examined for strong (quadrupole) and weak focusing field configurations. As a practical illustration, the results are applied to a drift-tube linac with quadrupole focusing in the transverse direction and rf phase focusing in the longitudinal direction.

• Research Organization: Electrical Engineering Department and Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 6624380
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:2; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATORS
BEAM ACCEPTANCE
BEAM BUNCHING
BEAM CURRENTS
BEAM DYNAMICS
CONFIGURATION
CURRENTS
DATA
EQUATIONS
FOCUSING
INFORMATION
LINEAR ACCELERATORS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
NUMERICAL DATA
OSCILLATIONS
PHASE SPACE
SPACE
SPACE CHARGE
THEORETICAL DATA
VARIATIONS