MANUFACTURE OF STRAIGHT-LINE BEAM MICROWAVE TUBE

PURPOSE: To align a position in severe accuracy further in a short time by facilitating positioning of a ceramic part difficult to obtain dimensional accuracy, in axially matching an electron gun with a slow wave circuit. CONSTITUTION: After a position aligning part 12 is mounted by brazing in an end part of a ceramic part 11 in an electron gun part 1, while axially matching an internal diameter of the position aligning part 12 with a Wehnelt 10, cutting is performed to be matched with an external diameter of an anode 8. By finely fitting the position aligning part 12 to the anode 8, axially aligning the electron gun part 1 relating to an internal diameter of a slow wave circuit 2 is performed by severe accuracy further in a short time.