Physics of high power ICRH on Jet

Conference · Sat Jul 01 04:00:00 EDT 1989 · AIP Conference Proceedings (American Institute of Physics); (USA)

OSTI ID:6781165

Start, D F.H.; Bhatnagar, V P; Bosia, G ^[1]; Boyd, D A ^[2]; Bures, M; Campbell, D J; Christiansen, J P; Cordey, J G; Cottrell, G A; Devillers, G ^[1]; Eriksson, L G ^[3]; Evrard, M P ^[4]; Heikkinen, J A; Hellsten, T; Jacquinot, J; Jarvis, O N; Knowlton, S; Kupschus, P ^[5]; Lean, H ^[6]; Lomas, P J ; Lowry, C; Nielsen, P; O'Rourke, J; Sadler, G ^[5]; Schmidt, G L ^[7]; Tanga, A; Taroni, A; Thomas, P R; Thomsen, K; Tubbing, B; Hellermann, M v ^[1]; Willen, U ^[8]

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1. Jet Joint Undertaking, Abingdon, Oxon (United Kingdom)
2. University of Maryland, College Park, Maryland (USA)
3. Chalmers University, Gothenburg (Sweden)
4. LPP-ERM/KMS, EUR-EB Association 1040 Brussells (Belgium)
5. Jet Joint Undertaking, Abindon, Oxon (United Kingdom)
6. Culham Laboratory, Abingon, Oxon (United Kingdom)
7. Princeton Plasma Physics Laboratory, NJ (USA)
8. Chal

Ion Cyclotron Resonance Heating (ICRH) experiment have been carried out in a wide range of Jet Plasmas. A high confinement region in the plasma core has been discovered during on-axis heating of pellet fueled discharges. Sawttoth-free periods and improved heating efficiency have been achieved in high current plasmas by heating during the current rise. Combined ICRH and neutral beam injection (NBI) in double null X-point plasmas has yields D-D fusion rates up to 2{times}10{sup 16} s{sup {minus}1} and electron and ion temperatures of 11keV and 17 keV respectively. Non-thermal fusion reaction rates from (He{sup 3}) D minority ICRH have been reproduced by a model which predicts Q{similar to}0.7 for (D)T minority ICRH in JET. RF modulation studies have yielded power deposition profiles and heat transport coefficients inside the {ital q}=1 surface. Alignment of the antenna screen to the magnetic field minimises nickel impurity release.

• OSTI ID: 6781165
• Report Number(s): CONF-8905120--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (USA) Journal Volume: 190:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ANTENNAS
BEAM INJECTION HEATING
CHARGED-PARTICLE REACTIONS
CONFINEMENT
DEUTERON REACTIONS
ELECTRICAL EQUIPMENT
ELECTRON DENSITY
EQUIPMENT
FUEL PELLETS
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
INSTABILITY
ION TEMPERATURE
JET TOKAMAK
NUCLEAR REACTIONS
PARAMETRIC INSTABILITIES
PELLETS
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS