Turbulent transport in TCV plasmas with positive and negative triangularity
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Plasmas"
DOI: 10.1063/1.5115390
Abstract: Local gyrokinetic simulations with the GENE code are used to investigate the turbulent transport for different levels of neutral beam injection heating power in the Tokamak a Configuration Variable (TCV) for plasmas with both positive… read more here.
Keywords: turbulent transport; positive negative; plasmas positive; transport ... See more keywords
Impact of triangularity on edge peeling–ballooning modes in H-mode plasmas
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Plasmas"
DOI: 10.1063/5.0174192
Abstract: Triangularity is an important shaping parameter in tokamak plasmas that affects the edge plasma state. In this work, we utilize the BOUT++ code to study the effect of positive and negative triangularity on the peeling–ballooning… read more here.
Keywords: negative triangularity; ballooning modes; modes mode; peeling ballooning ... See more keywords
Electromagnetic instability and turbulence in plasmas with positive and negative triangularity
Sign Up to like & getrecommendations! Published in 2025 at "Physics of Plasmas"
DOI: 10.1063/5.0255557
Abstract: While a number of studies exist comparing positive triangularity (PT) and negative triangularity (NT) δ, the nature of how the normalized electron pressure β affects microinstabilities and turbulence in fusion devices with substantial δ has… read more here.
Keywords: negative triangularity; turbulence; instability turbulence; electromagnetic instability ... See more keywords
Alfvén mode spectrum in the advanced steady-state tokamak scenario with negative triangularity
Sign Up to like & getrecommendations! Published in 2025 at "Physics of Plasmas"
DOI: 10.1063/5.0281831
Abstract: In the earlier studies [Zheng et al. Fundam. Plasma Phys. 10, 100051 (2024)], the negative triangularity tokamak was shown to have a unique and outstanding feature for the steady-state confinement. In addition to relieving the… read more here.
Keywords: negative triangularity; steady state; triangularity; scenario negative ... See more keywords
Effects of plasma boundary shape on explosive bursts triggered by tearing mode in toroidal tokamak plasmas with reversed magnetic shear
Sign Up to like & getrecommendations! Published in 2023 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/40/7/075201
Abstract: Numerical research is conducted to investigate the effects of plasma boundary shape on the tearing mode triggering explosive bursts in toroidal tokamak plasmas. In this work, m/n = 2/1 mode is responsible for the triggering… read more here.
Keywords: plasma boundary; explosive burst; elongation; effect ... See more keywords
Pedestal properties of H-modes with negative triangularity using the EPED-CH model
Sign Up to like & getrecommendations! Published in 2017 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/aa7ac0
Abstract: The EPED model has been designed to predict the pedestal height and width from a minimal set of parameters and using the stability of the pedestal region for global MHD peeling-ballooning (P-B) modes as well… read more here.
Keywords: stability; triangularity; model; negative triangularity ... See more keywords
Plasma edge and scrape-off layer turbulence in gyrokinetic simulations of negative triangularity plasmas
Sign Up to like & getrecommendations! Published in 2024 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/ad8186
Abstract: Gyrokinetic simulations in the long-wavelength or drift-kinetic limit are carried out of DIII-D inner-wall-limited (IWL) plasmas to investigate the effect of triangularity on edge and scrape-off layer (SOL) turbulence. The effect of neutral interactions and… read more here.
Keywords: negative triangularity; edge scrape; plasmas; gyrokinetic simulations ... See more keywords
On the interplay between plasma triangularity and micro-tearing turbulence
Sign Up to like & getrecommendations! Published in 2025 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/ae1327
Abstract: In this work, we study the interplay between triangularity and micro-tearing turbulence using linear and nonlinear flux tube GENE simulations. We consider scenarios with negative and positive triangularity (PT) plasma shaping taken from existing tokamaks… read more here.
Keywords: plasma; turbulence; geometry; micro tearing ... See more keywords
The effect of triangularity on fluctuations in a tokamak plasma
Sign Up to like & getrecommendations! Published in 2018 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aa98f4
Abstract: The effects of plasma shaping, in particular triangularity (δ), on temperature fluctuations in the tokamak a configuration variable have been studied using the correlation electron cyclotron emission system. It has been found that, in ohmic… read more here.
Keywords: tokamak plasma; fluctuations tokamak; triangularity fluctuations; triangularity ... See more keywords
The effect of shaping on trapped electron mode stability: an analytical model
Sign Up to like & getrecommendations! Published in 2024 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ad6e9f
Abstract: A reduced model for trapped electron mode stability has been developed, which incorporates the basic effects of magnetic surface shaping, in particular, elongation and triangularity. This model shows that while elongation is stabilising, though weakly,… read more here.
Keywords: trapped electron; stability; electron mode; model ... See more keywords
Infernal instabilities in negative-triangularity plasmas with negative central shear
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DOI: 10.1088/1741-4326/adac78
Abstract: A systematic numerical investigation is carried out to understand magnetohydrodynamic stability of the ideal infernal-kink instability in tokamak plasmas with both negative triangularity (neg-D) shaping and negative central shear for the equilibrium safety factor profile.… read more here.
Keywords: negative triangularity; plasmas negative; negative central; infernal instabilities ... See more keywords