CYCLOTRON WAVE DEVICES STUDY.

Research concerns the evaluation of the high-efficiency capabilities of the cyclotron-synchronous wave amplifier. An experimental evaluation of a one-watt amplifier was made at S-band. A small-signal coupled-mode analysis is being carried out for this device and a large-signal computer study is underway to examine the efficiency capabilities and to provide design data. The S-band amplifier was tested. The gun failed to provide sufficient current due to a faulty gun electrode. The cavity tuning slugs were found to operate satisfactorily. The filamentary stream coupled-mode analysis was modified to account for space-charge and beam focusing effects. (Author)