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Dynamics and Confinement of Ultralow-q Plasmasin the RFX-mod Device

Zuin M.; Agostini M.; Auriemma F.; Bonfiglio D.; Cappello S.; Carraro L.; Cavazzana R.; Franz P.; Marrelli L.; Martines E.; Puiatti M.E.; Piovan R.; Spizzo G.; Terranova D.; Zanca P.; Zaniol B.; Zanotto L.

Conference: FEC 2020 - 28th IAEA Fusion Energy Conference, , Virtual Event Europe/Vienna timezone , 10-15 May 2021 Year: 2021
ISTP Authors:
Lionello Marrelli
Gianluca Spizzo
David Terranova
Matteo Zuin
Matteo Agostini
Daniele Bonfiglio
Fulvio Auriemma
Lorella Carraro
Susanna Cappello

Keywords: , , ,
Research Activitie:

Experimental UltraLow q, ULq q(a)< 1 plasma dynamics study in RFX mod device. Good agreement with non linear 3 D visco resistive MHD simulations. Both almost quiescent and largely fluctuating plasmas strongly sensitive on q(a Tendency of a dominant single mode (kink or resonant internal mode. Magnetic reconnection determines magnetic topology. Flat T e profiles for q(a) 0 5 internal gradients emerge for 0 5 q(a) 1 at low n e core localized thermal structures associated to single helical states. High electron density regimes, n e n G 1 accessible with peaking factors 1. Energy confinement time t E 1 ms with I p 800 kA. No wall locking detected, no double resonant m 1 mode observed.

ID 453979
PRODUCT TYPE Conference Abstract
LAST UPDATE 2022-11-15T15:13:03Z
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