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TJ-II:Influence of positive and negative density gradients in turbulent transport using the HIBP system: Difference between revisions
TJ-II:Influence of positive and negative density gradients in turbulent transport using the HIBP system (view source)
Revision as of 09:30, 24 September 2018
, 24 September 2018→Carlos Hidalgo
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Fluid and GK simulations have investigated the level of inward turbulent particle transport in the inverted density gradient region [<ref>L. Garzotti et al Plasma Phys. Control. Fusion 56 (2014) 035004</ref>; <ref>C. Angioni et al., Nucl. Fusion 57 (2017) 116053</ref>], but comparisons of GK with experimental fluctuation levels and fluxes are missing. | Fluid and GK simulations have investigated the level of inward turbulent particle transport in the inverted density gradient region [<ref>L. Garzotti et al Plasma Phys. Control. Fusion 56 (2014) 035004</ref>; <ref>C. Angioni et al., Nucl. Fusion 57 (2017) 116053</ref>], but comparisons of GK with experimental fluctuation levels and fluxes are missing. | ||
Stellarators are well suited to investigate the influence of such positive and negative density gradients on plasmas fluctuations and transport because of its capabilities to control plasma scenarios and magnetic configuration. Recent experiments in TJ-II have shown that density fluctuations appear both at the positive and negative gradient regions in electron root ECRH plasmas, with the minimum amplitude in the zero density gradient regions [<ref>R. Sharma et al., EPS 2018</ref>]. | Stellarators are well suited to investigate the influence of such positive and negative density gradients on plasmas fluctuations and transport because of its capabilities to control plasma scenarios and magnetic configuration. Recent experiments in TJ-II have shown that density fluctuations appear both at the positive and negative gradient regions in electron root ECRH plasmas, with the minimum amplitude in the zero density gradient regions [<ref>R. Sharma et al., EPS 2018</ref>]. | ||
The goal is to systematically investigate the influence of on-axis / off-axis ECRH heating on fluctuations and turbulent ExB transport in positive and negative density gradient regions. | |||
The goal of this research proposal is to systematically investigate the influence of on-axis / off-axis ECRH heating power on fluctuations and turbulent ExB transport in positive and negative density gradient regions. | |||
== Collaboration with Kurchatoc and Kharkov teams== | == Collaboration with Kurchatoc and Kharkov teams== | ||