METHOD FOR SECURING A SLOW-WAVE STRUCTURE IN ENVELOPING STRUCTURE WITH CRIMPED SPACERS

摘要

several dielectric medium disposed lengthwise rods (14) are attached to the outer circumferential surface of the helical slow wave structure (12) to form a subassembly (10).the sub assembly (10) is mounted with a tight fitting relationship in an enveloping structure (16) comprising several elements of non-magnetic annular spacer (20) placed respectively between a number of ferromagnetic pole pieces (18) and the annular stub in relation to the latter.the plastic deformation force is applied by means of a pair of matrices (32, 34) on the outer surface of the spacer element (20) for crimping the spacing elements (20) on the stems of medium (14) and thereby firmly the subset of stem structure with slow waves (1) 0) in the enveloping structure (16).