Focusing of intensive electron beams in helix TWT with PPM focusing system with nonsinusoidal field

Abstract

Experimental results on beam transmission of intensive electron beams in high-voltage TWT with PPM focusing system with nonsinusoidal field at great values of magnetic field parameter α are presented. It is shown, that at 1,0<α<1,15, beam transmission to a collector is 85—91% in static and 78—85% in dynamic regime, and at values of α>1,4, which correspond to the second region of stability, conductance is 82% in statics and 75% in dynamics.