Velocity ratio measurement diagnostics and simulations of arelativistic electron beam in an axis encircling gyrotron
Jaynes, R.L.
Gilgenbach, R.M.
Hochman, J.M.
Eidietis, N.
Rintamaki, J.I.
Cohen, W.E.
Peters, C.W.
Lau, Y.Y.
Spencer, T.A.
Dept. of Nucl. Eng. & Radiol. Sci., Michigan Univ., Ann Arbor, MI;
This paper appears in: Plasma Science, IEEE Transactions on
Publication Date: Feb 1999
Volume: 27,
Issue: 1
On page(s): 136-137
ISSN: 0093-3813
References Cited: 3
CODEN: ITPSBD
INSPEC Accession Number: 6272575
Digital Object Identifier: 10.1109/27.763091
Current Version Published: 2002-08-06
Abstract
This paper reports on diagnostic experiments and simulations of a
large-orbit, axis-encircling gyrotron. The electron's perpendicular to
parallel velocity ratio α is measured. The experimental diagnostic
consists of an apertured portion of the beam which is passed through a
cusped magnetic field then collected on a glass plate. The cross section
of the beam is recorded on the glass plate in a radiation darkened
pattern. From the gyro-radius, B-field, and beam energy, α can be
calculated. Particle distributions of the radiation darkened plate are
in excellent agreement with numerical simulations of single particle
orbits derived from the relativistic equations of motion. The
experimental measurement of α yields values from 0.9 to 1.4. The
simulations predict an α of 1.0 to 1.5
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