QUARTERLY PROGRESS REPORT NO.14 RESEARCH AND DEVELOPMENT ON HIGH-POWER CRESTATRONS FOR THE 100-300 MC FREQUENCY RANGE

摘要

A series of trajectory plots is shown which led to a reasonably good electrical, design for the P = 20 .gun. The work done on .thenelectro statically focused tube using a p= 4.46 gee indicates thatnmuch better focusing can be obtained with the improved gun. At reduced voltages the bean transmission is only fair but it is shown that the percentage of transmission is improving as the design voltage is approached.nIn order to center the operating band of the IOC-watt Crestatrons more nearly within the desired frequency range and in order to overcome the r-f losses observed in the couplers, a revision is made in the tube design. The new disneiisioas and electrical parameters are shown.