Low-voltage, megawatt free-electron lasers at a frequency near 300 GHz
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Date
1988-01Author
Booske, J.
Granatstein, V.
Antonsen, T. Jr
Destler, William
Levush, B.
Mayergoyz, I.
Radack, D.
Rodgers, J.
Rosenbury, E.
Segalov, Z.
Serbeto, A.
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Show full item recordAbstract
Design procedures and beam transport feasibility experiments Il.re discussed for a novel,
millimeter-wave free electron laser (FEL) concept employing short period magnetic
undulators and a sheet electron beam. The advantages of this concept include: (1) lower
beam voltage (-500 kV) compatible with thermionic Pierce gun technology and conventional
power supplies (rather than electron accelerators), (?) a sheet electron beam geometry
which enables high power operation without excessively high gun perveance, and (3) a
streaming electron beam which is compatible with depressed collector beam energy recovery
for enhancing overall system efficiency. Conceptual designs for pulsed and cw high power
devices, and a cw low power device are presented.
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