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Identity physics experiment on internal transport barriers in JT-60U and JET (Articolo in rivista)

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Identity physics experiment on internal transport barriers in JT-60U and JET (Articolo in rivista) (literal)

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de Vries, P. C.[ 1 ] ; Sakamoto, Y.[ 3 ] ; Litaudon, X.[ 4 ] ; Beurskens, M. N. A.[ 1 ] ; Brix, M.[ 1 ] ; Crombe, K.[ 5 ] ; Fujita, T.[ 3 ] ; Giroud, C.[ 1 ] ; Hawkes, N. C.[ 1 ] ; Hayashi, N.[ 3 ] ; Joffrin, E.[ 4 ] ; Mantica, P.[ 6 ] ; Matsunaga, G.[ 3 ] ; Oyama, N.[ 3 ] ; Parail, V.[ 1 ] ; Salmi, A.[ 7 ] ; Shinohara, K.[ 3 ] ; Strintzi, D.[ 8 ] ; Suzuki, T.[ 3 ] ; Takechi, M.[ 3 ] ; Takenaga, H.[ 3 ] ; Tala, T.[ 9 ] ; Tsalas, M.[ 10 ] ; Urano, H.[ 3 ] ; Voitsekhovitch, I.[ 1 ] ; Yoshida, M.[ 3 ];JET EFDA contributors; and JT-60 team (2009)
Identity physics experiment on internal transport barriers in JT-60U and JET
in Plasma physics and controlled fusion (Print)
(literal)

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de Vries, P. C.[ 1 ] ; Sakamoto, Y.[ 3 ] ; Litaudon, X.[ 4 ] ; Beurskens, M. N. A.[ 1 ] ; Brix, M.[ 1 ] ; Crombe, K.[ 5 ] ; Fujita, T.[ 3 ] ; Giroud, C.[ 1 ] ; Hawkes, N. C.[ 1 ] ; Hayashi, N.[ 3 ] ; Joffrin, E.[ 4 ] ; Mantica, P.[ 6 ] ; Matsunaga, G.[ 3 ] ; Oyama, N.[ 3 ] ; Parail, V.[ 1 ] ; Salmi, A.[ 7 ] ; Shinohara, K.[ 3 ] ; Strintzi, D.[ 8 ] ; Suzuki, T.[ 3 ] ; Takechi, M.[ 3 ] ; Takenaga, H.[ 3 ] ; Tala, T.[ 9 ] ; Tsalas, M.[ 10 ] ; Urano, H.[ 3 ] ; Voitsekhovitch, I.[ 1 ] ; Yoshida, M.[ 3 ];JET EFDA contributors; and JT-60 team (literal)

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[ 1 ] Culham Sci Ctr, EURATOM UKAEA Assoc, Abingdon OX14 3DB, Oxon, England [ 2 ] JET EFDA Culham Sci Ctr, Abingdon OX15 3DB, Oxon, England [ 3 ] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan [ 4 ] CEA, IRFM, F-13108 St Paul Les Durance, France [ 5 ] Univ Ghent, Dept Appl Phys, B-9000 Ghent, Belgium [ 6 ] EURATOM ENEA CNR Assoc, Istituto di Fisica del Plasma, Milan, Italy [ 7 ] Helsinki Univ Technol, Assoc Euratom Tekes, FIN-02150 Espoo, Finland [ 8 ] Natl Tech Univ Athens, EURATOM Assoc, GR-15773 Athens, Greece [ 9 ] VTT, Assoc Euratom Tekes, Espoo 02044, Finland [ 10 ] NCSR Demokritos, Assoc EURATOM Hellen Republ, Attica, Greece (literal)

Titolo

Identity physics experiment on internal transport barriers in JT-60U and JET (literal)

Abstract

A series of experiments have been carried out in 2008 at JT-60U and JET to find common characteristics and explain differences between internal transport barriers (ITBs). The identity experiments succeeded in matching the profiles of most dimensionless parameters at the time ITBs were triggered. Thereafter the q-profile development deviated due to differences in non-inductive current density profile, affecting the ITB. Furthermore, the ITBs in JET were more strongly influenced by the H-mode pedestal or edge localized modes. It was found to be difficult to match the plasma rotation characteristics in both devices. However, the wide range of Mach numbers obtained in these experiments shows that the rotation has little effect on the triggering of ITBs in plasmas with reversed magnetic shear. On the other hand the toroidal rotation and more specifically the rotational shear had an impact on the subsequent growth and allowed the formation of strong ITBs. (literal)

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