Testing a prediction model for the H-mode density pedestal against JET-ILW pedestals

Microtearing Turbulence Limiting the JET-ILW Pedestal

D.R. Hatch, M. Kotschenreuther, S. Mahajan, P. Valanju, F. Jenko, D. Told, T. Görler, and S. Saarelma Institute for Fusion Studies, University of Texas at Austin, Austin, Texas, 78712 Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA Max Planck Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching, Germany Culham Centre for Fusion Energy, Culham S...

H-mode and L-H Threshold Experiments During ITER-like Plasma Current Ramp Up/Down at JET with ILW H-mode and L-H Threshold Experiments During ITER-like Plasma Current Ramp Up/Down at JET with ILW

" This document is intended for publication in the open literature. It is made available on the understanding that it may not be further circulated and extracts or references may not be published prior to publication of the original when applicable, or without the consent of the Publications Officer, The contents of this preprint and all other JET EFDA Preprints and Conference Papers are availa...

Density profile behavior in JET H-mode plasmas

The degree of peaking of the density profile has profound implications for reactor operation. As an independent complement to previous studies, density peaking in the JET tokamak was investigated on the most recent dataset, comprising virtually all experiments performed in 2006 and 2007. Unlike previous studies, this work focuses on low collisionality data as most representative of reactor cond...

The Role of Neutrals in H–mode Pedestal Formation

Global gyrokinetic simulations of the H-mode tokamak edge pedestal

Global gyrokinetic simulations of DIII-D H-mode edge pedestal show two types of instabilities may exist approaching the onset of edge localized modes: an intermediate-n, high frequency mode which we identify as the “kinetic peeling ballooning mode (KPBM),” and a high-n, low frequency mode. Our previous study [W. Wan et al., Phys. Rev. Lett. 109, 185004 (2012)] has shown that when the safety fac...