Title :
Recent results for the 1.5-MW, 110-GHz gyrotron experiment
Author :
Anderson, J.P. ; Shapiro, M.A. ; Temkin, R.J. ; Mastovsky, I.
Author_Institution :
Plasma Sci. & Fusion Center, Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
High power gyrotrons used for ECH heating of the DIII-D Tokamak at General Atomics have been able to produce 1 MW at 110 GHz for close to 10 s. The next generation of these tubes is being designed and built to produce 1.5 MW. The gyrotron design includes a 96 W, 40 A MIG electron gun to achieve a microwave efficiency of 39% in the TE22,6 mode. The physics and engineering features of the 1.5 MW, 110 GHz gyrotron are being examined at MIT, where a short (3 μs) pulse experimental version of the gyrotron is used for testing the gun and cavity design. In this study we present the most recent results of these experiments.
Keywords :
Tokamak devices; electron guns; gyrotrons; millimetre wave generation; millimetre wave tubes; plasma radiofrequency heating; 1 MW; 1.5 MW; 10 s; 110 GHz; 3 mus; 39 percent; 40 A; 96 W; ECH heating; MIG electron gun; TE22,6 mode; Tokamak; high power gyrotrons; microwave efficiency; Cathodes; Current measurement; Electromagnetic heating; Gyrotrons; Magnetic field measurement; Power generation; Power measurement; Probes; Temperature distribution; Voltage;
Conference_Titel :
Vacuum Electronics Conference, 2004. IVEC 2004. Fifth IEEE International
Print_ISBN :
0-7803-8261-7
DOI :
10.1109/IVELEC.2004.1316184
