Fast Wave Current Drive on TFTR

Journal Article · Thu Feb 01 04:00:00 EST 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.49492· OSTI ID:284134

Rogers, J H; Majeski, R; Hosea, J C; Phillips, C K; Schilling, G; Wilson, J R; Budny, R; Zarnstorff, M C ^[1]

---

1. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

For recent Fast Wave Current Drive (FWCD) experiments on TFTR two strap ICRF antennas with {plus_minus}90 degree phasing between the straps have been used. In one set of experiments an RF frequency of 63.6 MHz and toroidal magnetic field of 2.7 T were selected, which placed the H fundamental resonance on the high field side of the plasma the second harmonic H resonance out of the plasma on the low field side. H-minority heating (43 MHz) was used simultaneously to raise T{sub e}. The difference in loop voltage observed is consistent with {approximately}70 kA of driven current with 2 MW of RF power. In a second experiment an RF frequency of 43 MHz and toroidal magnetic field of 4.3 T was selected, which placed the deuterium fundamental resonance on the high field side of the plasma and the hydrogen fundamental resonance out of the plasma on the low field side (TPX scenario). With 1.4 MW of RF power, the signal to noise ratio in the loop voltage measurement was too low to clearly resolve the effect from current drive. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Princeton Plasma Physics Laboratory
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 284134
• Report Number(s): CONF-9505105--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 355; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
CURRENT-DRIVE HEATING
DEUTERIUM
ELECTRON TEMPERATURE
HELIUM
HYDROGEN
KEV RANGE 01-10
MHZ RANGE 01-100
PLASMA CONFINEMENT
TFTR TOKAMAK