Ion cyclotron range of frequency heating on the Tokamak Fusion Test Reactor

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860728· OSTI ID:6232680

Taylor, G; Bell, M G; Biglari, H; Bitter, M; Bretz, N L; Budny, R; Chen, L; Darrow, D; Efthimion, P C; Ernst, D; Fredrickson, E; Fu, G Y; Grek, B; Grisham, L; Hammett, G; Hosea, J C; Janos, A; Jassby, D; Jobes, F C; Johnson, D W ; Johnson, L C; Majeski, R; Mansfield, D K; Mazzucato, E; Medley, S S; Mueller, D; Nazikian, R; Owens, D K; Paul, S; Park, H; Phillips, C K; Rogers, J H; Schilling, G; Schivell, J; Schmidt, G L; Stevens, J E; Stratton, B C; Strachan, J D; Synakowski, E; Wilson, J R; Wong, K L; Zweben, S J ^[1]; Baylor, L; Bush, C E; Goldfinger, R C; Hoffman, D J; Murakami, M; Qualls, A L; Rasmussen, D ^[2]; Machuzak, J ^[3]; Rimini, F ^[4]

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1. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
2. Oak Ridge National Laboratory, Oak Ridge, Tennessee 08731 (United States)
3. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
4. JET Joint Undertaking, Abingdon, Oxfordshire (United Kingdom)

The complete ion cyclotron range of frequency (ICRF) heating system for the Tokamak Fusion Test Reactor (TFTR) [Fusion Tech. [bold 21], 1324 (1992)], consisting of four antennas and six generators designed to deliver 12.5 MW to the TFTR plasma, has now been installed. Recently a series of experiments has been conducted to explore the effect of ICRF heating on the performance of low recycling, supershot plasmas in minority and nonresonant electron heating regimes. The addition of up to 7.4 MW of ICRF power to full size ([ital R][similar to]2.6 m, [ital a][similar to]0.95 m), helium-3 minority, deuterium supershots heated with up to 30 MW of deuterium neutral-beam injection has resulted in a significant increase in core electron temperature ([Delta][ital T][sub [ital e]]=3--4 keV). Simulations of equivalent deuterium--tritium (D--T) supershots predict that such ICRF heating should result in an increase in [beta][sub [alpha]](0)[similar to]30%. Direct electron heating has been observed and has been found to be in agreement with theory. The ICRF heating has also been coupled to neutral-beam heated plasmas fueled by frozen deuterium pellets. In addition ICRF heated energetic ion tails have been used to simulate fusion alpha particles in high-recycling plasmas. Up to 11.4 MW of ICRF heating has been coupled into a hydrogen minority, high-recycling helium plasma and the first observation of the toroidal Alfven eigenmode (TAE) instability driven by the energetic proton tail has been made in this regime.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 6232680
• Journal Information: Physics of Fluids B; (United States), Vol. 5:7; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
TOKAMAK DEVICES
ION CYCLOTRON-RESONANCE
PLASMA HEATING
ALFVEN WAVES
ALPHA PARTICLES
ANTENNAS
DEUTERIUM
ELECTRON TEMPERATURE
HELIUM 3
HYDROGEN
PELLETS
TRITIUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CLOSED PLASMA DEVICES
CYCLOTRON RESONANCE
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
EVEN-ODD NUCLEI
HEATING
HELIUM ISOTOPES
HYDROGEN ISOTOPES
HYDROMAGNETIC WAVES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RESONANCE
STABLE ISOTOPES
THERMONUCLEAR DEVICES
YEARS LIVING RADIOISOTOPES
700350* - Plasma Production
Heating
Current Drive
& Interactions- (1992-)
700310 - Plasma Confinement- (1992-)