Multicavity klystron.

摘要

A multicavity klystron (10) includes a plurality of drift tubes (15a to 15f; 15fA) for passage therethrough of a beam (11) of electrons from an electron gun (12) toward an electron collector (14; 14A) via a plurality of cavity resonators (13a to 13e) arranged successively between the electron gun (12) and the collector (14; 14A). One of the drift tubes (15f, 15fA) which is located next to the collector (14; 14A) has an inside diameter (Di) which is not greater than that (D2) of the other drift tubes (15a to 15e).