UDC 622.3.032.266

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

Chasnyk V. I.

Keywords: TWT helical slow-wave system, PPM with non-sinusoidal field, magnetic field parameter, stability region.

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.

Ukraine, Kiev, Research Institute «Orion».