Abstract: A collector sweeping method for controlling an electron beam in a beam collector, in particular of a magnetic gyrotron device, comprises the steps of subjecting the electron beam to a transversal sweeping field having a field component perpendicular to a longitudinal direction (z) of the beam collector and providing a tilted, rotating intersection area of the electron beam in the beam collector, and varying at least one of a longitudinal position and a tilting angle of the intersection area by a modulation of the transversal sweeping field. Furthermore, a collector sweeping apparatus and a microwave generator are described.
May 4, 2007
Date of Patent:
August 23, 2011
Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., Karlsruher Institut für Technologie
Volker Erckmann, Günter Dammertz, Martin Schmid
Abstract: An electron beam microwave device having an evacuated interaction chamber to which are coupled a resonant cavity which has an opening between the resonant cavity and the evacuated interaction chamber and an electron gun which causes a narrow beam of electrons to traverse the evacuated interaction chamber. The device also contains a mechanism for feeding back a microwave electromagnetic field from the resonant cavity to the evacuated interaction chamber in such a way as to modulate the direction of propagation of the electron beam, thereby further amplifying the microwave electromagnetic field. Furthermore, provision is made for coupling the electromagnetic field out of the electron beam microwave device.
March 22, 1993
Date of Patent:
December 13, 1994
The United States of America as represented by the United States National Aeronautics and Space Administration