Development of a long-pulse 1. 3 GHz relativistic klystron amplifier

Journal Article · Mon Jun 01 04:00:00 EDT 1992 · IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/27.142839· OSTI ID:6975711

Rickel, D G; Carlsten, B E; Fazio, M V; Faehl, R J; Kwan, T J.T.; Stringfield, R M; Wasierski, R F ^[1]

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1. Los Alamos National Lab., Los Alamos, NM (US)

In this paper, a research approach is described for obtaining kilojoule microwave pulses of microsecond duration at 1.3 GHz from the relativistic klystron amplifier. Achieving kilojoule microwave pulses requires extending electron beam pulse durations and maximizing the microwave extraction efficiency at the fundamental frequency. An electron beam diode has been constructed that delivers peak currents in excess of 5 kA with a monotonically increasing current pulse exceeding durations of 1 {mu}s at beam kinetic energies above 400 keV. Close attention has been given to minimizing the current losses from the diode. Maximum microwave extraction efficiency at the fundamental frequency has been related to the beam bunching amplitude and output cavity shunt impedance in terms of a simple circuit theory. The circuit theory predictions have been tested by particle-in-cell code calculations of the electron beam interactions with the proposed cavity structures. The successful cavity structures have been constructed and are awaiting testing.

• OSTI ID: 6975711
• Journal Information: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 20:3; ISSN 0093-3813; ISSN ITPSB
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
440800* -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
AMPLIFIERS
BEAMS
CAVITIES
EFFICIENCY
ELECTRON BEAMS
ELECTRON TUBES
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUIPMENT
FABRICATION
FREQUENCY RANGE
GHZ RANGE
GHZ RANGE 01-100
KLYSTRONS
LEPTON BEAMS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
PARTICLE BEAMS
PULSES
RELATIVISTIC RANGE
SIMULATION