High power ICRF experiments on TFTR

Conference · Sat Oct 15 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7263123

Wilson, J R; Hosea, J C; Majeski, R; Phillips, C K; Rogers, J H; Schilling, G; Stevens, J; Taylor, G ^[1]; Murakami, M; Rasmussen, D A ^[2]

---

1. Princeton University (United States)
2. ORNL ( )

ICRF heating experiments have been conducted in a variety of conditions on the TFTR tokamak. Power levels up to 11.4 MW have been applied. During NBI driven supershot discharges the central electron temperature has been increased from 9 kev to 13 kev via [sup 3]He minority heating with 6 MW of RF power. This temperature increase leads to a 70% increase in the projected alpha energy slowing down time. In gas fueled L-mode discharges the energetic hydrogen minority tail is observed to strongly influence the MHD stability of the discharges. Besides the stabilization of the sawtooth instability previously reported, the destabilization of both the m=1 fishbone and the TAE (toroidal Alfven eigenmode) instabilities have been observed. The TAE instability is accompanied with significant ([similar to]10%) loss of high energy ions and degradation in global confinement time.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7263123
• Report Number(s): CONF-9304112--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 289:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ALPHA PARTICLES
BEAM INJECTION
CHARGED PARTICLES
CLOSED PLASMA DEVICES
D-T REACTORS
ELECTROMAGNETIC RADIATION
ELECTRON TEMPERATURE
ELEMENTS
EVEN-ODD NUCLEI
FISHBONE INSTABILITY
HEATING
HELIUM 3
HELIUM ISOTOPES
HIGH-FREQUENCY HEATING
HYDROGEN
ICR HEATING
INSTABILITY
ISOTOPES
LIGHT NUCLEI
NEUTRAL ATOM BEAM INJECTION
NONMETALS
NUCLEI
OSCILLATIONS
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
RADIATIONS
RADIOWAVE RADIATION
SAWTOOTH OSCILLATIONS
STABLE ISOTOPES
TFTR TOKAMAK
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES