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- W2163528091 abstract "Abstract : Studies have been conducted in the following areas: (1) Cathodes have been constructed for testing as follows: Three cathodes have been tested in a vacuum bell jar where their operation could be observed. After 1,000 cycles of 30 minutes on and 30 minutes off, there were no heater failures; however, there were some mechanical changes. Three diodes were placed on dc cycling for 1,000 cycles of 30 minutes on and 30 minutes off. One of these was removed because of a vacuum leak. Three cathodes were placed in a bell jar where they could be observed. These operated at 20% over normal power. Three diodes were placed on noncycling or normal operational life with an ac voltage applied. Three diodes are on normal life with dc voltage applied. Structural changes have been proposed for future diode and bell jar cathode tests. (2) The window study consisted of the construction of the following items: (a) Pulse generator for instigating arcs in the waveguide. (b) An adapter for three point viewing of a photomultiplier tube. (c) A three-port viewing waveguide assembly for measuring the speed of an arc. (d) A remote turnoff section to stop the arc. Equipments were also modified to reduce the drive level to preset values so the arc formed could travel at reduced powers. In order to minimize problems during these preliminary tests, the VA-876 was set aside, and tests were made using a Varian-owned amplifier. This Varian-owned klystron will produce 8 kW at 10.5 GHz and was used to debug the system before proceeding to the VA-876 at higher power levels. (Author)" @default.
- W2163528091 created "2016-06-24" @default.
- W2163528091 date "1968-05-01" @default.
- W2163528091 modified "2023-09-25" @default.
- W2163528091 title "713. Study of methods to improve high power klystron life and reliability" @default.
- W2163528091 doi "https://doi.org/10.1016/0042-207x(68)90267-4" @default.
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