Characterization of Quasi-Single-Helicity States in a Low-Aspect-Ratio RFP (Articolo in rivista)

Type

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

Label

• Characterization of Quasi-Single-Helicity States in a Low-Aspect-Ratio RFP (Articolo in rivista) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

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

• 10.1585/pfr.7.1402028 (literal)

Alternative label

• Kensuke OKI; Daisuke FUKAHORI; Kazuaki DEGUCHI; Seiya NAKAKI; Akio SANPEI; Haruhiko HIMURA; Sadao MASAMUNE; Roberto PACCAGNELLA (2012)
  Characterization of Quasi-Single-Helicity States in a Low-Aspect-Ratio RFP
  in Plasma and fusion research; The Japan Society of Plasma Science and Nuclear Fusion Research, 3-1-1-4F, Uchiyama, Chikusa-ku, Nagoya 464-0073 (Giappone)
  (literal)

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

• Kensuke OKI; Daisuke FUKAHORI; Kazuaki DEGUCHI; Seiya NAKAKI; Akio SANPEI; Haruhiko HIMURA; Sadao MASAMUNE; Roberto PACCAGNELLA (literal)

Pagina inizio

• 1402028 (literal)

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

• Regular Articles; Article Number 1402028. (literal)

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

• https://www.jstage.jst.go.jp/article/pfr/7/0/7_1402028/_article (literal)

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

• 7 (literal)

Rivista

• Plasma and fusion research (Rivista)

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

• 6 (literal)

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

• 2012 (literal)

Note

• Scopu (literal)

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

• 1, 2, 3, 4, 5, 6, 7: Kyoto Institute of Technology, Kyoto 606-8585, Japan / - 8: Consorzio RFX and Istituto Gas Ionizzati del C.N.R, Padova, 35127, Italy (literal)

Titolo

• Characterization of Quasi-Single-Helicity States in a Low-Aspect-Ratio RFP (literal)

Abstract

• Characteristics of quasi-single-helicity (QSH) states have been studied in a low-aspect-ratio reversed field pinch (RFP) machine RELAX mainly by magnetic diagnostics. Internal profiles of the fluctuating radial, poloidal and toroidal magnetic fields have shown good agreement with eigenfunctions of a single helical mode. The edge magnetic fluctuation spectra are somewhat broader than what are expected from internal magnetic field profiles. In spite of these slight discrepancies, the usual measure for the QSH, the spectral index NS lower than 2, still provides a reasonable measure for QSH states in RELAX. The QSH persistence has been improved in RELAX by the reduction of the poloidal resistance of flanges at poloidal gaps, mainly due to the improved axisymmetry of the toroidal magnetic field. QSH persistence more than 30% of the flat-topped current phase has been realized with current density lower than in other RFP, and probability of spontaneous QSH is 12.8 ± 7.3% which is higher than high-aspect-ratio RFP. It suggests the advantage of low-aspect-ratio configuration in attaining to the QSH. Comparison with recent experiments using active resonant perturbation may suggest the importance of further reduction of field errors to improve the quality of QSH. (literal)

Editore

• The Japan Society of Plasma Science and Nuclear Fusion Research (Editore)

Prodotto di

• Esperimento RFX ed attività collegate (ET.P05.003.001) (Modulo)
• Institute of ionized gas (IGI) (Istituto)

Autore CNR

• ROBERTO PACCAGNELLA (Persona)

Incoming links:

Prodotto

• Institute of ionized gas (IGI) (Istituto)
• Esperimento RFX ed attività collegate (ET.P05.003.001) (Modulo)

Autore CNR di

• ROBERTO PACCAGNELLA (Persona)

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

• Plasma and fusion research (Rivista)

Editore di

• The Japan Society of Plasma Science and Nuclear Fusion Research (Editore)