A dielectrically loaded converging guide accelerator. Interim report

Technical Report · Thu Dec 01 04:00:00 EST 1977

OSTI ID:6575429

Sprangle, P; Drobot, A T

A scheme for collectively accelerating ions trapped in a space charge wave supported by an intense relativistic electron beam is disussed. In this scheme ions are trapped in the potential well of a low phase velocity space charge wave and accelerated by gradually increasing the phase velocity of the wave. One way of accelerating the wave is by propagating the electron beam through a converging waveguide. The converging structure has the effect of increasing the electron beam energy and thus, accelerating the wave. The paper is concerned mainly with achieving low phase velocity space charge waves in a loaded waveguide. At the limiting electron beam current the minimum phase velocity of a space charge wave approaches zero. By lining the converging guide accelerator with an appropriate frequency dependent dielectric material, the initial phase velocity can be made small enough to trap low energy protons (approx. 5 MeV) at currents below the limiting current. The electric field associated with the accelerating wave can be as high as a MeV/cm.

• Research Organization: Naval Research Lab., Washington, DC (USA)
• OSTI ID: 6575429
• Report Number(s): AD-A-053384; NRL-MR-3660
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATORS
BEAMS
DESIGN
ELECTRON BEAMS
LEPTON BEAMS
PARTICLE BEAMS
WAVEGUIDES