Summary form only given, as follows. Microwave TechnologiesIncorporated is developing a miniature cold cathode electron gun (MCEG)prototype as a potential replacement for conventional thermioniccathodes. The MCEG employs Pierce-type geometry and uses microscopicsilicon cathode for the generation of a good-qualityhigh-current-density electron beam. We will report on a MCEGproof-of-principle experiment which is designed for the generation of a5 kV, 50 mA electron beam. The status of our test bed assembly and ofour data acquisition system will be presented. We will also report onthe experimental emission testing of different field-emitter-arraycathodes tested in our system. When compared to conventional thermionicelectron guns, the MCEG offers a substantial reduction in size andweight and avoids the use of heating elements. The electron gunprototype under development has an immense number of applications suchas the next generation of microwave tubes, electron microscopes,high-definition television, spectrometers, flat panel displays, as wellas industrial and medical accelerators
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