학술논문
Formation of Sheet Helical Electron Beams for High-Power Planar Gyrotrons
Document Type
Periodical
Source
IEEE Electron Device Letters IEEE Electron Device Lett. Electron Device Letters, IEEE. 43(7):1121-1124 Jul, 2022
Subject
Language
ISSN
0741-3106
1558-0563
1558-0563
Abstract
Planar magnetron-injection gun forming a powerful (3 MW) sheet helical electron beam (HEB) for 140 GHz gyrotron was designed. Modified scheme of an electron beam analyzer based on the retarding electric field method was developed to measure the electron beam characteristics, including pitch-factor and velocity spread. Experimental results are in good agreement with theoretical predictions and demonstrate feasibility of formation of a wide (20 mm) sheet HEB with an energy of 100 keV, a current of 30 A and a pitch-factor of above 1.2 – 1.3.