Author :
Myasnikov, V.E. ; Litvak, A.G. ; Usachev, S.V. ; Popov, L.G. ; Agapova, M.V. ; Alikaev, V.V. ; Denisov, G.G. ; Gnedenkov, A. Ph ; Ilyin, V.I. ; Ilyin, V.N. ; Khmara, D.V. ; Kostyna, A.N. ; Nichiporenko, V.O. ; Zapevalov, V.E.
Abstract :
The new design of 170 GHz/1 MW/50% gyrotron with depressed collector and diamond window is reported. First stage testing of this gyrotron with BN window was completed. Output power of 950 kW and efficiency up to 44% were achieved. Pulse duration of 0.4 s was limited by BN window capacity. BN window was replaced then with the diamond one and second stage testing started with low power regime. Pulse duration of 20 s was reached at 250-kW power level.
Keywords :
Tokamak devices; fusion reactor design; gyrotrons; millimetre wave tubes; plasma radiofrequency heating; 170 GHz; Gaussian wave beam; ITER; adjustable last mirror; built-in quasi-optical converter; cavity structure; depressed collector; diamond window; diode electron gun; gyrotron development; low power regime; pulse duration; second stage testing; Electrons; Gyrotrons; Insulation; Mirrors; Numerical simulation; Power generation; Radio frequency; Scattering; Testing; Voltage;
