Abstract
The objectives of this investigation were to develop a one megawatt CW waveguide window with 10% bandwidth at a frequency of 8 GHz and to design and construct a CW traveling-wave resonator capable of testing windows at CW power levels exceeding one megawatt. The first portion of this paper discusses the development of a high gain one megawatt CW traveling-wave resonator. Problems associated with the design, operation, and maintenance of this device at very high average powers are discussed. Thermal instabilities caused by dielectric heating of window samples are shown to be a serious problem in both high power window testing programs and practical application of window designs to high power microwave tubes.
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