Title :
Optimisation of the electron beam-cavity system of 170 GHz gyrotron for ITER
Author :
Zapevalov, V.E. ; Flyagin, V.A. ; Kuftin, A.N. ; Moiseev, M.A. ; Zavolsky, N.A.
Author_Institution :
Inst. of Appl. Phys., Acad. of Sci., Nizhny Novgorod, Russia
Abstract :
The opportunity of use of a TE28.7, TE31.8 and TE25.10 operating modes for CW 170 GHz/1 MW gyrotron for ITER is estimated. Parameters are optimized to achieve maximum efficiency of the gyrotron with an acceptable Ohmic load on the cavity. Results of experimental investigation of short pulse prototypes of the TE28.7 and TE25.10 gyrotrons are presented. Maximum output power 1.3 MW, efficiency 36%, and 65% with single-stage depressed collector were achieved
Keywords :
Tokamak devices; gyrotrons; plasma radiofrequency heating; 1 MW; 170 GHz; 36 percent; 65 percent; ITER plasma; electron beam-cavity system; electron cyclotron resonance heating; gyrotron; Acceleration; Electron beams; Frequency; Gyrotrons; Numerical simulation; Particle beams; Physics; Power generation; Q factor; Voltage;
Conference_Titel :
Electronics and Radiophysics of Ultra-High Frequencies, 1999. International University Conference Proceedings
Conference_Location :
St Petersburg
Print_ISBN :
5-7422-0083-8
DOI :
10.1109/UHF.1999.787904
