Accession Number:

ADA230674

Title:

Pulse Shaping a High-Current Relativistic Electron Beam in Vacuum

Descriptive Note:

Technical rept. Oct 1989-Jul 1990

Corporate Author:

NAVAL SURFACE WARFARE CENTER SILVER SPRING MD

Report Date:

1990-06-28

Pagination or Media Count:

36.0

Abstract:

A simple method for shaping the output current pulse of a relativistic electron beam in vacuum is presented. This method has been employed to sharpen the risetime of high-current relativistic electron beam produced by a 2 MV, 7 kA, 20 ns pulser. The beam nominally has a pulse shape that is triangular in both voltage and current, with a negligible instantaneous energy spread. The desired pulse shape is nominally rectangular in current, The technique utilizes a magnetic lens with a magnitude of approximately 1.5kG to focus on beam. Passing beam electrons through the magnetic lens causes them to focus at different axial locations downstream from the lens depending upon their energy. The focal point of the beam current peak corresponding to maximum energy is then located furthest downstream. An aperture is used near the focus to select a portion of the beam having the desired parameters. Keywords Electron beam, Pulse shaping, Risetime sharpening, Magnetic lens. jhd

Subject Categories:

  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE