Results 31 to 40 of about 19,217,453 (333)
ELM triggering conditions for the integrated modeling of H-mode plasmas
, 2004 Recent advances in the integrated modeling of ELMy H-mode plasmas are presented. A model for the H-mode pedestal and for the triggering of ELMs predicts the height, width, and shape of the H-mode pedestal and the frequency and width of ELMs. Formation of
A. H. Kritz +42 more
core +1 more source
Recent H-mode density limit studies at JET [PDF]
, 2004 Extensive studies of the H-mode density limit (DL) in JET gas-puffed discharges have been performed in the past four years targeting at an improved database for extrapolation to ITER.
Borrass, K., Rapp, J.
core +1 more source
“Snowflake” H Mode in a Tokamak Plasma [PDF]
Physical Review Letters, 2010 An edge-localized mode (ELM) H-mode regime, supported by electron cyclotron heating, has been successfully established in a "snowflake" (second-order null) divertor configuration for the first time in the TCV tokamak. This regime exhibits 2 to 3 times lower ELM frequency and 20%-30% increased normalized ELM energy (ΔWELM/Wp) compared to an identically ...
F, Piras +8 more
openaire +2 more sources
Nuclear Fusion, 2015 A new ‘Super H-mode’ regime is predicted, which enables pedestal height and predicted fusion performance substantially higher than for H-mode operation.
P. Snyder +11 more
semanticscholar +1 more source
Gyrokinetic studies of core turbulence features in ASDEX Upgrade H-mode plasmas
, 2015 Gyrokinetic validation studies are crucial in developing confidence in the model incorporated in numerical simulations and thus improving their predictive capabilities.
Abiteboul, J. +8 more
core +1 more source
Effect of turbulence on electron cyclotron current drive and heating in ITER [PDF]
, 2014 Non-linear local electromagnetic gyrokinetic turbulence simulations of the ITER standard scenario H-mode are presented for the q=3/2 and q=2 surfaces. The turbulent transport is examined in regions of velocity space characteristic of electrons heated by ...
Angioni, C. +4 more
core +2 more sources
Characteristics of edge pedestals in LHW and NBI heated H-mode plasmas on EAST
, 2016 By using the recently developed Thomson scattering diagnostic, the pedestal structure of the H-mode with neutral beam injection (NBI) or/and lower hybrid wave (LHW) heating on EAST (Experimental Advanced Superconducting Tokamak) is analyzed in detail. We
Q. Zang +17 more
semanticscholar +1 more source
Strong ExB shear flows in the pedestal region in H-mode plasma
, 2006 We report the first experimental observation of stationary zonal flows in the pedestal region of the H-mode plasma in the H-1 toroidal heliac. Strong peaks in E_r shear mark the top and foot of the density pedestal.
A. M. Balk +4 more
core +1 more source
I-mode studies at ASDEX Upgrade: L-I and I-H transitions, pedestal and confinement properties [PDF]
, 2016 The I-mode is a plasma regime obtained when the usual L-H power threshold is high, e.g. with unfavourable ion B ∇ direction. It is characterised by the development of a temperature pedestal while the density remains roughly as in the L-mode ...
Barrera Orte, L. +15 more
core +1 more source
β Limits in H-mode-like discharges [PDF]
Journal of Computational Physics, 1986 Recent tokamak beta optimization studies have indicated the existence of a \(\beta\) limit proportional to the plasma current. A two-step numerical optimization procedure is described for finding \(\beta\) limits in tokamak configurations with peaked current and flat pressure profiles, such as are believed to be characteristic of H-mode plasmas ...
Turnbull, A. D. +4 more
openaire +2 more sources