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- Steven P. Hirshman, Kalyan S. Perumalla, Vickie E. Lynch, Raul SÃ¡nchez
- J. Comput. Physics
- 2010

A block tridiagonal matrix is factored with minimal fill-in using a cyclic reduction algorithm that is easily parallelized. Storage of the factored blocks allows the application of the inverse toâ€¦ (More)

- W. A. Cooper, Steven P. Hirshman, +6 authors K. Y. Watanabe
- Computer Physics Communications
- 2009

a r t i c l e i n f o a b s t r a c t Free boundary three-dimensional anisotropic pressure magnetohydrodynamic equilibria with nested magnetic flux surfaces are computed through the minimisation ofâ€¦ (More)

- B. Nelson, Ron Benson, +19 authors Danny Williamson
- 21st IEEE/NPS Symposium on Fusion Engineeringâ€¦
- 2005

The engineering design status of the quasi-poloidal stellarator experiment (QPS) is presented. The overall configuration and the design, manufacturing R&D and assembly techniques of the coreâ€¦ (More)

- Diego del-Castillo-Negrete, Steven P. Hirshman, Donald A. Spong, Eduardo F. D'Azevedo
- J. Comput. Physics
- 2007

Numerical calculations of magnetic and flow fields in magnetohydrodynamic (MHD) simulations can result in extensive data sets. Particle-based calculations in these MHD fields, needed to provideâ€¦ (More)

- Sudip K. Seal, Kalyan S. Perumalla, Steven P. Hirshman
- J. Parallel Distrib. Comput.
- 2013

- Sudip K. Seal, Kalyan S. Perumalla, Steven P. Hirshman
- Concurrency and Computation: Practice andâ€¦
- 2013

We report the results of a scaling effort that increases both the speed and resolution of the SIESTA magnetohydrodynamic equilibrium code. SIESTA is capable o f computing three-dimensional plasmaâ€¦ (More)

- Sudip K. Seal, Steven P. Hirshman, Andreas Wingen, Robert S. Wilcox, Mark R. Cianciosa, Ezekial A. Unterberg
- 2016 45th International Conference on Parallelâ€¦
- 2016

The ability to sustain magnetically confined plasma in a state of stable equilibrium is crucial for optimal and cost-effective operations of fusion devices like tokamaks and stellarators. Theâ€¦ (More)

- Sudip K. Seal, Mark R. Cianciosa, Steven P. Hirshman, Andreas Wingen, Robert S. Wilcox, Ezekial A. Unterberg
- 2017 46th International Conference on Parallelâ€¦
- 2017

Fast, accurate three dimensional reconstructions of plasma equilibria, crucial for physics interpretation of fusion data generated within confinement devices like stellarators/ tokamaks, areâ€¦ (More)

- Daniel J. Monticello, Barry Blackwell, +32 authors M. Zarnstorf
- 1999

D. Monticello , B. Blackwell , A. Boozer , A. Brooks , W. A. Cooper , M. Drevlak , G. Fu , R. Goldston , L. Grisham , J.Harris , S.Hirshman , M. Isaev , L. Ku , Z. Lin , J.F. Lyon , P. Merkel , M.â€¦ (More)