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Ion cyclotron range of frequency mode conversion flow drive in D(3He) plasmas on JET (Articolo in rivista)
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- Ion cyclotron range of frequency mode conversion flow drive in D(3He) plasmas on JET (Articolo in rivista) (literal)
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- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/0741-3335/54/7/074001 (literal)
- Alternative label
Lin, Y [ 1 ] ; Mantica, P [ 2 ] ; Hellsten, T [ 3 ] ; Kiptily, V [ 4 ] ; Lerche, E [ 5 ] ; Nave, MFF [ 6 ] ; Rice, JE [ 1 ] ; Van Eester, D [ 5 ] ; de Vries, PC [ 7 ] ; Felton, R [ 4 ] ; Giroud, C [ 4 ] ; Tala, T [ 8 ] and JET-EFDA contributors (2012)
Ion cyclotron range of frequency mode conversion flow drive in D(3He) plasmas on JET
in Plasma physics and controlled fusion (Online); IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Lin, Y [ 1 ] ; Mantica, P [ 2 ] ; Hellsten, T [ 3 ] ; Kiptily, V [ 4 ] ; Lerche, E [ 5 ] ; Nave, MFF [ 6 ] ; Rice, JE [ 1 ] ; Van Eester, D [ 5 ] ; de Vries, PC [ 7 ] ; Felton, R [ 4 ] ; Giroud, C [ 4 ] ; Tala, T [ 8 ] and JET-EFDA contributors (literal)
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- [ 1 ] MIT Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
[ 2 ] Istituto di Fisica del Plasma CNR EURATOM, I-20125 Milan, Italy
[ 3 ] Assoc EURATOM VR, EES, KTH, Stockholm, Sweden
[ 4 ] EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
[ 5 ] Assoc Euratom Belgian State, LPP ERM KMS, TEC, B-1000 Brussels, Belgium
[ 6 ] Assoc EURATOM IST, Inst Plasmas & Fusao Nucl, P-1049001 Lisbon, Portugal
[ 7 ] EURATOM, FOM Inst Rijnhuizen, Nieuwegein, Netherlands
[ 8 ] Assoc EURATOM Tekes, VTT, FIN-02044 Espoo, Finland
[ 9 ] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England (literal)
- Titolo
- Ion cyclotron range of frequency mode conversion flow drive in D(3He) plasmas on JET (literal)
- Abstract
- Ion cyclotron range of frequency (ICRF) mode conversion has been shown to drive toroidal flow in JET D(3He) L-mode plasmas: Bt0 = 3.45 T, ne0 ~ 3 × 1019 m-3, Ip = 2.8 and 1.8 MA, PRF <= 3 MW at 33 MHz and -90° phasing. Central toroidal rotation in the counter-Ip direction, with ?0 up to 10 krad s-1 (V0 ~ 30 km s-1, central thermal Mach number Mth (0) ~ 0.07 and Alfvén Mach number MA (0) ~ 0.003) has been observed. The flow drive effect is sensitive to the 3He concentration and the largest rotation is observed in the range X[3He] = nHe3/ne ~ 10-17%. The rotation profile is peaked near the magnetic axis, and the central rotation scales with the input RF power. The effective torque density profile from the RF power has been calculated and the total torque is estimated to be as high as 50% of the same power from neutral beam injection, and a factor of 5 larger than the direct momentum injection from the RF waves. RF physics modeling using the TORIC code shows that the interaction between the mode converted ion cyclotron wave and the 3He ions, and associated asymmetry in space and momentum, may be key for flow drive. (literal)
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