DocumentCode :
2686127
Title :
Research in coherent, free electron, millimeter-wave sources at the University of Wisconsin
Author :
Booske, John H. ; Scharer, John E. ; Chang, S.F. ; Joe, J.
fYear :
1990
fDate :
21-23 May 1990
Firstpage :
192
Abstract :
Summary form only given. An experimental/theoretical research program is being established at the University of Wisconsin (UW) to study millimeter-wave, free-electron masers (FEMs). The program will concentrate on the investigation of devices using low-voltage (<100-kV), axially streaming, periodically focused electron beams and slow-wave structures. Topics of particular attention include efficiency optimization and average power handling enhancement in the above-mentioned devices. The use of sheet electron beams for increasing the power-handling capabilities of low-voltage FEMs is investigated. Dispersion relations and growth rates for dielectric liner and periodic gratings are evaluated. Nonlinear effects such as tapering, mode-competition, and beam space-charge-as well as beam quality-are quantitatively studied for their impact on efficiency optimization. Experimental research is conducted on a streaming beam experimental (SBX) facility, which is capable of operating in single-pulse (0.1-100-μs) burst, or CW mode and delivers beams of up to 50 kV and 2 A (with later upgrade to 75 kV)
Keywords :
free electron lasers; masers; 0.1 to 100 mus; 100 kV; 2 A; 50 kV; 75 kV; CW mode; SBX facility; University of Wisconsin; beam space-charge; burst mode; coherent free electron millimetre wave sources; dielectric liner; dispersion relations; efficiency optimization; free-electron masers; growth rates; low voltage axially streaming periodically focused electron beams; mode-competition; periodic gratings; power handling; power-handling capabilities; sheet electron beams; single pulse mode; slow-wave structures; tapering;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science, 1990. IEEE Conference Record - Abstracts., 1990 IEEE International Conference on
Conference_Location :
Oakland, CA, USA
Type :
conf
DOI :
10.1109/PLASMA.1990.110798
Filename :
5726068
Link To Document :
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