MHD activity in FTU plasmas with reversed magnetic shear
Creators
- Buratti, P.1
- Alladio, F.1
- Micozzi, P.1
- Tudisco, O.1
- Acitelli, L.1
- Angelini, B.1
- Apicella, M.L.1
- Apruzzese, G.1
- Barbato, E.1
- Bertocchi, A.1
- Bracco, G.1
- Buceti, G.1
- Cardinali, A.1
- Centioli, C.1
- Cesario, R.1
- Ciattaglia, S.1
- Ciotti, M.1
- Cocilovo, V.1
- Crisanti, F.1
- De Angelis, R.1
- De Marco, F.1
- Esposito, B.1
- Frigione, D.1
- Gabellieri, L.1
- Gatti, G.1
- Giovannozzi, E.1
- Gourlan, C.1
- Grolli, M.1
- Imparato, A.1
- Kroegler, H.1
- Leigheb, M.1
- Lovisetto, L.1
- Maddaluno, G.1
- Maffia, G.1
- Mancuso, M.1
- Marinucci, M.1
- Mazzitelli, G.1
- Mirizzi, F.1
- Orsitto, F.P.1
- Pacella, D.1
- Panaccione, L.1
- Panella, M.1
- Pericoli Ridolfini, V.1
- Pieroni, L.1
- Podda, S.1
- Righetti, G.B.1
- Romanelli, F.1
- Santini, F.1
- Sassi, M.1
- Sternini, S.1
- Tuccillo, A.A.1
- Valente, F.1
- Vitale, V.1
- Vlad, G.1
- Zanza, V.1
- Zerbini, M.1
- Bruschi, A.2
- Cirant, S.2
- Granucci, G.2
- Simonetto, A.2
- Sozzi, C.2
- Segre, S.E.3
- 1. Associazione Euratom-ENEA sulla Fusione, CR Frascati, 00044, Frascati, Rome (Italy)
- 2. Associazione Euratom-ENEA-CNR, Istituto di Fisica del Plasma, Milano (Italy)
- 3. Dipartimento di Fisica, II Universita di Roma 'Tor Vergata', Rome (Italy)
Description
The MHD activity of plasma configurations with reversed magnetic shear has been investigated on the FTU tokamak. In the presence of pairs of surfaces with the same rational value q = m/n of the safety factor, double-tearing modes are excited which give rise in most cases to bursts of sawtooth-like profile rearrangements. More stable regimes have also been found, in which the activity is dominated by rotating saturated modes. In a particular case with q(0) approx.= 2.8 and qmin approx.= 2.5 a discharge without any detectable MHD activity during the current flat-top has been obtained. In high-temperature regimes (Te approx.= 8 keV at ne approx.0.8x1020 m-3), an irregular activity has been detected near the plasma centre which could be due to the excitation of resistive interchange modes. (author)
Additional details
Publishing Information
- Journal Title
- Plasma Physics and Controlled Fusion (Online)
- Journal Volume
- 39
- Journal Issue
- 12B
- Journal Page Range
- p. B383-B394
- ISSN
- 1361-6587
Conference
- Title
- 24. European Physical Society conference on controlled fusion and plasma physics
- Dates
- 9-13 Jun 1997
- Place
- Berchtesgaden (Germany)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43113928
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- FT TOKAMAK; MAGNETIC FIELD CONFIGURATIONS; MAGNETOHYDRODYNAMICS; MHD EQUILIBRIUM; REVERSED SHEAR; ROTATIONAL TRANSFORM
- Descriptors DEC
- CLOSED PLASMA DEVICES; EQUILIBRIUM; FLUID MECHANICS; HYDRODYNAMICS; MECHANICS; THERMONUCLEAR DEVICES; TOKAMAK DEVICES
Optional Information
- Notes
- 18 refs; This record replaces 31048884