TY - GEN
T1 - Simulation results for new NSTX HHFW antenna straps design by using microwave studio
AU - Kung, C. C.
AU - Ellis, R.
AU - Brunkhorst, C.
AU - Greenough, N.
AU - Fredd, E.
AU - Castano, A.
AU - Miller, D.
AU - D'Amico, G.
AU - Yager, R.
AU - Hosea, J.
AU - Wilson, J. R.
AU - Ryan, P.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/70350719635
UR - https://www.scopus.com/pages/publications/70350719635#tab=citedBy
U2 - 10.1109/FUSION.2009.5226421
DO - 10.1109/FUSION.2009.5226421
M3 - Conference contribution
AN - SCOPUS:70350719635
SN - 9781424426362
T3 - Proceedings - Symposium on Fusion Engineering
BT - 2009 23rd IEEE/NPSS Symposium on Fusion Engineering, SOFE 2009
T2 - 2009 23rd IEEE/NPSS Symposium on Fusion Engineering, SOFE 2009
Y2 - 1 June 2009 through 5 June 2009
ER -