Rebatron as a high-energy accelerator. Memorandum report

Technical Report · Fri Apr 04 04:00:00 EST 1986

OSTI ID:5627090

Dialetis, D; Marsh, S J; Kapetanakos, C A

A detailed numerical and analytical study of the beam dynamics in a rebatron acceleration has shown that energies approaching 1 GeV can be achieved within 5-10 microseconds. Since the acceleration in the rebatron occurs within a short time, the device many not be sensitive to the various instabilities and the loss to synchrotron radiation should be small. The rapid acceleration is produced by convoluted parallel transmission lines, which provide a high gradient electric field. At the initial stage of the acceleration, the beam is confined inside the torus by a strong-focusing torsatron magnetic field, which makes the beam insensitive to the mismatch and to the external field index of a vertical magnetic field. This local field is generated by two coaxial cylindrical plates located symmetrically around the minor axis of the torus, and carrying currents in opposite directions. The energy of the beam increases in synchronism with the vertical magnetic field so that the beam remains matched (i.e., the beam radius remains constant) during the entire acceleration. As a result of the periodic nature of the acceleration, it was found that resonances can be excited, which cause the orbits to expand. The only disruptive resonance occurs at gamma = approx. 1830, i.e., when the vertical magnetic field reaches twice the value of the toroidal magnetic field.

• Research Organization: Naval Research Lab., Washington, DC (USA)
• OSTI ID: 5627090
• Report Number(s): AD-A-166624/7/XAB; NRL-MR-5655
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATION
ACCELERATORS
BEAM DYNAMICS
BEAMS
CYCLIC ACCELERATORS
ELECTRON BEAMS
ENERGY TRANSFER
LEPTON BEAMS
LOSSES
MAGNETIC FIELDS
ORBITS
PARTICLE BEAMS
RESONANCE