Showing 1 - 4 of 4 Journals Results
2021
UKAEA-CCFE-PR(21)13
J. T. Parker P. A. Hill D. Dickinson B. D. Dudson
Tridiagonal matrix inversion is an important operation with many applications. It arises frequently in solving discretized one-dimensional elliptic partial differential equations, and forms the basis for many algorithms for block tridiagonal matrix inversion for discretized PDEs in higher-dimensions. In such systems, this operation is often the sca…
Preprint2018
UKAEA-CCFE-PR(18)32
B. J. Ding P. T. Bonoli A. Tuccillo M. Goniche K. Kirov M. Li Y. Li R. Cesario Y. Peysson A. Ekedahl L. Amicucci S. Baek I. Faust R. Parker S. Shiraiwa G. M. Wallace A. Cardinali C. Castaldo S. Ceccuzzi J. Mailloux F. Napoli F. Liu B. Wan JET Contributors
Progress in understanding lower hybrid current drive (LHCD) at high density has been made through experiments and modeling, which is encouraging given the need for an efficient off-axis current profile control technique in burning plasma. By reducing the wall recycling of neutrals, the edge temperature is increased and the effect of parametric inst…
Preprint Published2013
J. E. Rice Y. A. Podpaly M. L. Reinke R. Mumgaard S. D. Scott S. Shiraiwa G. M. Wallace B. Chouli C. Fenzi-Bonizec M. F. F. Nave P. H. Diamond C. Gao R. S. Granetz J.W. Hughes R. R. Parker Et Al
Application of lower hybrid (LH) current drive in tokamak plasmas can induce both co- and countercurrent directed changes in toroidal rotation, depending on the core q profile. For discharges with q0 < 1, rotation increments in the countercurrent direction are observed. If the LH-driven current is sufficient to suppress sawteeth and increase q0 abo…
Published2005