http://www.cnr.it/ontology/cnr/individuo/prodotto/ID277579

3D magnetic fields and plasma rotation in RFX-mod tokamak plasmas (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

3D magnetic fields and plasma rotation in RFX-mod tokamak plasmas (Articolo in rivista) (literal)

Anno

2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1088/0029-5515/53/11/113022 (literal)

Alternative label

L. Piron; D. Bonfiglio; P. Piovesan; B. Zaniol; F. Auriemma; L. Carraro; L. Chacón; L. Marrelli; M. Valisa; M. Veranda; M. Zuin (2013)
3D magnetic fields and plasma rotation in RFX-mod tokamak plasmas
in Nuclear fusion; International Atomic Energy Agency, Vienna (Austria); IOP PUBLISHING LTD, BRISTOL BS1 6BE (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

L. Piron; D. Bonfiglio; P. Piovesan; B. Zaniol; F. Auriemma; L. Carraro; L. Chacón; L. Marrelli; M. Valisa; M. Veranda; M. Zuin (literal)

Pagina inizio

113022 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

Article Number: 113022; E-ISSN: 1741-4326 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://iopscience.iop.org/0029-5515/53/11/113022/pdf/0029-5515_53_11_113022.pdf (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

53 (literal)

Rivista

Nuclear fusion (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

8 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

11 (literal)

Note

ISI Web of Science (WOS) (literal)
Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1-6, 8-11 : Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, 35127 Padova, Italy / 7 : Los Alamos National Laboratory, Los Alamos, NM 87545, USA. (literal)

Titolo

3D magnetic fields and plasma rotation in RFX-mod tokamak plasmas (literal)

Abstract

Plasma rotation has been one of the topics of major interest in the fusion community over the last few years, given in particular its role on magnetohydrodynamic stability and turbulence suppression. Rotation can be affected by three-dimensional (3D) magnetic fields, e.g. due to intrinsic magnetic field errors or active coils. The reversed field pinch RFX-mod device (Sonato et al 2003 Fusion Eng. Des. 66 161) has been recently operated as an ohmic tokamak with q(a) < 2 thanks to the suppression of the m = 2, n = 1 mode through magnetic feedback control. In such discharges, plasma rotation is sensitive to the presence of 3D magnetic fields, applied through magnetic feedback or due to the growth of the m = 2, n = 1 mode. In particular, it has been observed that above a threshold value of m = 2, n = 1 radial magnetic field amplitude, plasma rotation reverses from counter- to co-I-p direction. The physical mechanisms that can play a role on momentum transport in these plasmas have been investigated, such as the neoclassical toroidal viscosity, the ambipolar electric field due to magnetic stochasticity, and the friction force due to neutrals coming from the wall. All these phenomena are expected to be important in determining the plasma rotation behaviour also in larger tokamaks. Since the RFX-mod experiment has a simple geometry (circular cross-section) and a wide choice of 3D magnetic fields can be applied with the 192 active coils available, it provides a unique test bed to study the basic physics mechanisms responsible for momentum transport. (literal)

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