Title :
Design of a high power three-cavity gyroklystron system
Author :
Main, W. ; Tantawi, S. ; Latham, P.E. ; Lawson, W. ; Demske, S. ; Striffler, C.D. ; Reiser, M. ; Granatstein, V.L.
Abstract :
Summary form only given. A 30-MW gyroklystron amplifier is being designed to demonstrate the feasibility of this type of device as a driver for future 1 -TeV linear colliders. The system uses a beam produced by a magnetron injection gun. The system is designed to yield a 500-kV, 200-A, 1-μs beam with α=1.5 and low velocity spread. To achieve the necessary gain, a system with three or more cavities must be used. The experimental effort has focused on characterizing the beam with air core transformers, 90°-sector capacitive probes, diamagnetic loops, and a B-dot probe. A TE011 two-cavity device has been built and tested. This has made it possible to study the start oscillation current and to test the design codes on a relatively simple system. Three codes have been used to design the three-cavity system: (1) a nonlinear particle code, (2) a cavity and whole circuit code, and (3) a start oscillation current code. These codes make it possible to design not only the microwave circuit but also the loading to suppress oscillation in unwanted modes
Keywords :
gyrotrons; klystrons; microwave amplifiers; 1 -TeV linear colliders; 1 TeV; 1 mus; 200 A; 30 MW; 500 kV; 90°-sector capacitive probes; B-dot probe; TE011 two-cavity device; air core transformers; cavity and whole circuit code; design codes; diamagnetic loops; driver; high power three-cavity gyroklystron system; loading; magnetron injection gun; microwave sources; nonlinear particle code; oscillation suppression; phase locked mode; start oscillation current; unwanted modes; velocity spread;
Conference_Titel :
Plasma Science, 1990. IEEE Conference Record - Abstracts., 1990 IEEE International Conference on
Conference_Location :
Oakland, CA, USA
DOI :
10.1109/PLASMA.1990.110800
