The Micro Lasertron

An Efficient Switched-Power Source of mm Wavelength Radiation
  • R. B. Palmer
Part of the Ettore Majorana International Science Series book series (EMISS, volume 29)


An extension of W. Willis’ “Switched Power Linac” is studied. Pulsed laser light falls on a photocathode wire, or wires, within a simple resonant structure. The resulting pulsed electron current between the wire and the structure wall drives the resonant field, and rf energy is extracted in the mm to cm wavelength range. Various geometries are presented, including one consisting of a simple array of parallel wires over a plane conductor. Results from a one dimensional simulation are presented.


Pulse Length Maximum Efficiency Phase Advance Resonant Circuit Parallel Wire 
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  1. 1.
    W. Willis, “Switched Power Linac,” Laser Acceleration of Particles (Malibu, 1985), AIP Conf. Proc. 130, p. 242.Google Scholar
  2. 2.
    E. L. Garwin et al., “An Experimental Program to Build a Multimegawatt Lasertron for Super Linear Colliders,” 1985 Particle Accelerator Conf. (to be pulished in IEEE Trans. Nucl. Sci. NS-32); also SLAC-PUB-3650. Y. Fukushima et al., “Lasertron, a Photocathode Microwave Device Switched by Laser,” 1985 Particle Accelerator Conf. (to be published in IEEE Trans. Nucl. Sci. NS-32).Google Scholar
  3. 3.
    F. T. Warren et al., “Current Evolution in a Pulsed Overstressed Radial Vacuum Gap,” IEEE Trans. Elec. Insulation. EI-18. No. 3, p. 226 (1983).CrossRefGoogle Scholar
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    B. Juttner et al., “Zerstörung und Erzeugung von Feldemittern auf ausgedehnten Metalloberflächen,” Beitrage für Plasmaphysick 10, p. 383 (1970).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • R. B. Palmer
    • 1
    • 2
  1. 1.Stanford Linear Accelerator CenterStanford UniversityStanfordUSA
  2. 2.Brookhaven National LaboratoryUSA

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