Experimental testing of an electron gun and beam transport system for a 670 GHz extended interaction klystron

Experimental testing of electron beam formation, transport, and depressed collection is performed in a beamstick for a 670 GHz extended interaction klystron with a 25 kV, 100 mA nominal operating point. Beam transmissions of 77-86% are achieved through a 125 micron diameter by 1.7 cm long beam tunnel.