Abstract

a traveling wave tube (TWT) for amplification of signals. In a TWT the collector is the main source of heat dissipation. The electrodes are heated by the residual kinetic energy of the collected electrons; however, the elec- trodes must be maintained at a rela- tively low temperature. There are two ways to dissipate this heat into cold space (see Fig. 1). 1. Heat conduction from the elec- trodes to the spacecraft radiator. This is called conduction cooling and is suit-

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