Title :
Theory of a frequency-step-tunable gyrotron for optimum plasma ECRH
Author :
Dumbrajs, Olgierd ; Nuisnovich, G.S.
Author_Institution :
Arbeitsbereich Hochfrequenztech., Tech. Univ., Hamburg-Harburg, Germany
fDate :
8/1/1992 12:00:00 AM
Abstract :
A theory is presented which describes the dependence of the multimode operation of a gyrotron on the modulation and beam voltages. Nonlinear nonstationary processes are considered. An approximate start-up scenario of a gyrotron is determined which makes it possible to achieve single-mode excitation and high-efficiency operation in a desired mode, as well as to switch the tube to a similar operation in other modes
Keywords :
gyrotrons; plasma radiofrequency heating; tuning; 140 GHz; EHF; beam voltages; electron cyclotron resonance heating; frequency-step-tunable gyrotron; high-efficiency operation; modulation voltages; multimode operation; nonlinear nonstationary processes; plasma ECRH; single-mode excitation; start-up scenario; Cyclotrons; Electromagnetic heating; Electrons; Frequency; Gyrotrons; Magnetic fields; Plasma waves; Switches; Tokamaks; Voltage;
Journal_Title :
Plasma Science, IEEE Transactions on
