Title :
Simulation results for new NSTX HHFW antenna straps design by using microwave studio
Author :
Kung, C.C. ; Ellis, R. ; Brunkhorst, C. ; Greenough, N. ; Fredd, E. ; Castano, A. ; Miller, B. ; Amico, G.D. ; Yager, R. ; Hosea, J. ; Wilson, J.R. ; Ryan, P.
Author_Institution :
Princeton Plasma Phys. Lab., Princeton, NJ, USA
Abstract :
Experimental results have shown that the high harmonic fast wave (HHFW) at 30 MHz can provide substantial plasma heating and current drive for the NSTX spherical tokamak operation. However, the present antenna strap design rarely achieves the design goal of delivering the full transmitter capability of 6 MW to the plasma. In order to deliver more power to the plasma, a new antenna strap design and the associated coaxial line feeds are being constructed. This new antenna strap design features two feed-throughs to replace the old single feed-through design. In the design process, CST Microwave Studio has been used to simulate the entire new antenna strap structure including the enclosure and the Faraday shield. In this paper, the antenna strap model and the simulation results will be discussed in detail. The test results from the new antenna straps with their associated resonant loops will be presented as well.
Keywords :
Tokamak devices; antennas; antennas in plasma; fusion reactor design; fusion reactor ignition; microwave antennas; plasma heating; plasma simulation; NSTX antenna straps design; NSTX spherical tokamak operation; associated resonant loops; high harmonic fast wave; microwave studio; plasma current drive heating; plasma simulation; substantial plasma heating; Antenna feeds; Coaxial components; Electromagnetic heating; Microwave antennas; Plasma simulation; Plasma waves; Process design; Tokamaks; Transmitters; Transmitting antennas;
Conference_Titel :
Fusion Engineering, 2009. SOFE 2009. 23rd IEEE/NPSS Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2635-5
Electronic_ISBN :
978-1-4244-2636-2
DOI :
10.1109/FUSION.2009.5226421
