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Heating, current drive and confinement regimes with the JET ICRH and lhcd systems
The JET Team; JACQUINOT, J (reprint author), JET JOINT UNDERTATING,ABINGDON OX14 3EA,OXON,ENGLAND.
Source PublicationPlasma Physics and Controlled Fusion
1991
Volume33Issue:13Pages:1657-1675
ISSN0741-3335
AbstractDuring its 1990 operation, 2 large RF systems were available on JET. The Ion Cyclotron Resonance Heating (ICRH) system was equipped with new beryllium screens and with feedback matching systems. Specific impurities generated by ICRH were reduced to negligible levels even in the most stringent H-mode conditions. A maximum power of 22 MW was coupled to L-mode plasmas. High quality H-modes (tau-E greater-than-or-equal-to 2.5 tau-EG) were achieved using dipole phasing. A new high confinement mode was discovered. It combines the properties of the H-mode regime to the low central diffusivities obtained by pellet injection. A value of n(d) tau-E T(i) = 7.8 x 10(20) m-3 s keV was obtained in this mode with T(e) approximately T(i) approximately 11 keV. In the L-mode regime, a regime, a record (140 kW) D-He-3 fusion power was generated with 10 - 14 MW of ICRH at the He-3 cyclotron frequency. Experiments were performed with the prototype launcher of the Lower Hybrid Current Drive (LHCD) systems with coupled power up to 1.6 MW with current drive efficiencies up to < n(e) > R I(CD)/P = 0.4 x 10(20) m-2 A/W. Fast electrons are driven by LHCD to tail temperatures of 100 keV with a hollow radial profile. Paradoxically, LHCD induces central heating particularly in combination with ICRH. Finally we present the first observations of the synergistic acceleration of fast electrons by Transit Time Magnetic Pumping (TTMP) (from ICRH) and Electron Landau Damping (ELD) (from LHCD). The synergism generates TTMP current drive even without phasing the ICRH antennae.
KeywordIcrh Lhcd H-mode L-mode Heating Confinement Fusion Yield Peaked Density Profiles Antenna Screen Edge Physics Synergistic Effects Current Drive Tokamaks Plasma Energy Mode
DOI10.1088/0741-3335/33/13/012
Indexed BySCI
Language英语
WOS IDWOS:A1991GV33600012
WOS KeywordTOKAMAKS ; PLASMA ; ENERGY ; MODE
WOS Research AreaEngineering ; Physics
WOS SubjectEngineering, Chemical ; Physics, Applied ; Physics, Fluids & Plasmas
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/39510
Collection力学所知识产出(1956-2008)
Corresponding AuthorJACQUINOT, J (reprint author), JET JOINT UNDERTATING,ABINGDON OX14 3EA,OXON,ENGLAND.
Recommended Citation
GB/T 7714
The JET Team,JACQUINOT, J . Heating, current drive and confinement regimes with the JET ICRH and lhcd systems[J]. Plasma Physics and Controlled Fusion,1991,33(13):1657-1675.
APA The JET Team,&JACQUINOT, J .(1991).Heating, current drive and confinement regimes with the JET ICRH and lhcd systems.Plasma Physics and Controlled Fusion,33(13),1657-1675.
MLA The JET Team,et al."Heating, current drive and confinement regimes with the JET ICRH and lhcd systems".Plasma Physics and Controlled Fusion 33.13(1991):1657-1675.
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