SPEC description
SPEC is a Stepped, Pressure Equilibrium Code. This code constructs MHD equilibria by combining elements of ideal MHD and Taylor relaxation theory in a manner that is consistent with the structure of chaotic magnetic fields.
All relevant publications and presentations are given below.
Please direct questions/suggestions to Stuart Hudson, shudson@pppl.gov, subject=spec.
Contents
- Publications
- Invited Talks, Seminars and Conference Presentations
Publications
- Plasmoid solutions of the Hahm-Kulsrud-Taylor equilibrium model
R. L. Dewar, A. Bhattacharjee, R. M. Kulsrud, and A. M. Wright
Physics of Plasmas, 20:082103, 2013
- Minimally Constrained Model of Self-Organized Helical States in Reversed-Field Pinches
G. R. Dennis, S. R. Hudson, D. Terranova, P. Franz, R. L. Dewar
Physical Review Letters, 111:055003, 2013
- Hamilton-Jacobi theory for connecting equilibrium magnetic fields across a toroidal surface supporting a plasma pressure discontinuity
M. McGann
PhD Thesis, The Australian National University, 2013
- The infinite interface limit of multiple-region relaxed magnetohydrodynamics
G.R. Dennis, S.R.Hudson, R.L. Dewar and M.J. Hole
Physics of Plasmas, 20:032509, 2013
- Computation of multi-region relaxed magnetohydrodynamic equilibria
S.R.Hudson, R.L.Dewar, G.Dennis, M.J.Hole, M.McGann, G.von Nessi and S. Lazerson
Physics of Plasmas, 19:112502, 2012
- Nonaxisymmetric, multi-region relaxed magnetohydrodynamic equilibrium solutions
S.R.Hudson, R.L. Dewar, M.J. Hole and M. McGann
Plasma Physics and Controlled Fusion, 54:014005, 2012
- Hign-n stability of a pressure discontinuity in three-dimensional plasma
D. Barmaz
Master's Thesis, The Australian National University, 2011
- Hamilton-Jacobi theory for continuation of magnetic field across a toroidal surface supporting a plasma pressure discontinuity
M. McGann, S.R.Hudson, R.L. Dewar and G. von Nessi
Physics Letters A, 374(33):3308, 2010
- Relaxed MHD states of a multiple region plasma
M.J.Hole, R.Mills, S.R.Hudson and R.L.Dewar
Nuclear Fusion, 49:065019, 2009
- Magnetohydrodynamic stability of plasmas with ideal and relaxed regions.
R.L. Mills, M.J. Hole, and R.L. Dewar
J. Plasma Physics, 75(5):637, 2009
- Relaxed plasma equilibria and entropy-related plasma self-organization principles
R.L.Dewar, M.J.Hole, M.McGann, R.Mills and S.R.Hudson,
Entropy, 10:621, 2008
- Equilibria and stability in partially relaxed plasma-vacuum systems
M.J. Hole, S.R.Hudson and R.L. Dewar
Nuclear Fusion, 47(8):746, 2007
- Eigenvalue problems for Beltrami fields arising in a 3-D toroidal MHD equilibrium problem
S.R.Hudson, M.J. Hole and R.L.Dewar
Physics of Plasmas, 14:052505, 2007
- Stepped pressure profile equilibria in cylindrical plasmas via partial Taylor relaxation
M.J.Hole, S.R.Hudson and R.L.Dewar
Journal of Plasma Physics, 72(6), 1167, 2006
Invited Talks, Seminars and Conference Presentations
- 2013, 16 Sep - 20 Sep : Joint 19th International Stellarator / Heliotron Workshop and 16th IAE Reversed Field Pinch Workshop, Padova, Italy
- invited talk : Minimally constrained model of self-organised helical states in RFX (slides)
G.R.Dennis, S.R.Hudson, D.Terranova, P. Franz, R.L.Dewar and M.J.Hole
- 2013, 1 Jul - 5 Jul : 40th European Physical Society Conference on Plasma Physics, Espoo, Finland
- poster : A minimally constrained model of self-organised helical states in reversed field pinches (P4.130 poster)
G.R.Dennis, S.R.Hudson, R.L.Dewar, D.Terranova, P. Franz and M.J.Hole
- 2013, 15 Apr - 17 Apr : International Sherwood Fusion Theory Conference, Santa Fe, USA
- invited talk : A minimally constrained model of self-organised helical states in reversed-field pinches (slides)
G.R.Dennis, S.R.Hudson, D.Terranova, R.L.Dewar and M.J.Hole
- 2013, 16 Sep - 20 Sep : Joint 19th International Stellarator / Heliotron Workshop and 16th IAE Reversed Field Pinch Workshop, Padova, Italy
- invited talk : Minimally constrained model of self-organised helical states in RFX (slides)
G.R.Dennis, S.R.Hudson, D.Terranova, P. Franz, R.L.Dewar and M.J.Hole
- 2013, 1 Jul - 5 Jul : 40th European Physical Society Conference on Plasma Physics, Espoo, Finland
- poster : A minimally constrained model of self-organised helical states in reversed field pinches (P4.130 poster)
G.R.Dennis, S.R.Hudson, R.L.Dewar, D.Terranova, P. Franz and M.J.Hole
- 2013, 12 Apr : National Institute for Fusion Science, Japan
- oral presentaton : Relaxed MHD equilibria with current sheets [(slides)]
Robert L. Dewar, Graham Dennis, Matthew Hole, Mathew McGann, Stuart Hudson, Amitava Bhattacharjee, Russell Kulsrud, Zensho Yoshida
- 2012, 9 Dec - 13 Dec : 20th Australian Institute of Physics Congress, Sydney, Australia.
- oral presentaton : Taylor relaxation and reversed field pinches. [(slides)]
Graham Dennis, Robert Dewar, Stuart Hudson, Matthew Hole
- 2012, 19 Nov - 22 Nov : 22nd International Toki Conference, Toki, Japan.
- oral presentaton : Advanced MHD models of anisotropy, flow and chaotic fields. [(abstract),(slides)]
M. J. Hole, M. Fitzgerald, G. Dennis, S. Hudson, R. L. Dewar, G. von Nessi, B. D. Blackwell
- poster : Theory and numerics of the Stepped Pressure Equilibrium Code. [(abstract),(poster)]]
S.R. Hudson, R.L. Dewar, G. Dennis, M.J. Hole, S.A. Lazerson
- 2012, 4 Sep : ITER
- seminar : Partially-relaxed, partially-constrained MHD equilibria. [(slides)]
M.J. Hole, et al.
- 2012, 29 Jan - 3 Feb : 18th International Stellarator/Heliotron Workshop & 10th Asia Pacific Plasma Theory Conference, Australian National University.
- invited talk : Nonlinearly perturbed MHD equilibria, with or without magnetic islands. [(abstract),(slides),(pdf)]
S.R. Hudson, R. L. Dewar, M.J. Hole, M. McGann & G. Dennis
- poster : Multi-region Taylor relaxed states in a reversed field pinch. [(poster)]
G. Dennis et al
poster : Inverse problem for an equilibrium current sheet [(poster)]
R.L. Dewar
- 2011, 27 Jun - 1 Jul : 38th EPS Conference on Plasma Physics, Strasbourg, France.
- invited talk : Partially-relaxed, partially-constrained MHD equilibria. [(abstract)]
S.R. Hudson, R.L. Dewar, M.J. Hole, M. McGann.
- 2011, 2 May - 4 May : 2001 International Sherwood Fusion Theory Conference, Austin, Texas, USA.
- poster : Computation of non-axisymmetric equilibria using a partially-relaxed, partially-constrained MHD equilibrium model. [(abstract)]
S.R. Hudson, R.L. Dewar, M.J. Hole, M. McGann.
- 2011, 11 Apr - 14 Apr : 5th International Workshop on Stochasticity in Fusion Plasmas, Julich, Germany.
- selected extended oral : Partially-relaxed, topologically-constrained MHD equilibria with chaotic fields. [(abstract)]
S.R. Hudson, R.L. Dewar, M.J. Hole, M. McGann.
- 2010, 7 Dec - 10 Dec : 20th International Toki Conference (ITC20), Ceratopia, Toki-city, Gifu, Japan.
- invited oral contribution : Multi-volume, partially-relaxed MHD equilibria. [(abstract),(slides)],(slides)]
S.R. Hudson, R.L. Dewar, M.J. Hole, M. McGann.
- 2009, 12 Oct - 15 Oct : European Fusion Theory Conference, Riga, Latvia.
- talk : Equilibrium code consistent with field line chaos; Critical behaviour in toroidal plasma confinement. [(abstract)][(slides)]
M. McGann, R.L. Dewar & S.R. Hudson
- 2009, 21 Sep - 25 Sep : European Conference on Complex Systems, Warwick, UK.
- talk : Critical behaviour in toroidal plasma confinement by 3-D magnetic fields. [(slides)]
M. McGann, R.L. Dewar & S.R. Hudson
- 2008, 12 Oct - 18 Oct : 22nd IAEA Fusion Energy Conference, Geneva, Switzerland.
- paper : Relaxed MHD states of a multiple region plasma. [(paper)]
M.J.Hole, R.L.Dewar, S.R. Hudson, M. McGann and R.Mills.
- 2008, 24 Aug - 30 Aug : XXII International Congress of Theoretical and Applied Mechanics, Adelaide, Australia.
- paper : Equilibrium and stability in relaxed magnetohydrodynamics of toroidal plasmas. [(paper)]
R.L. Dewar, M. Hole, M. McGann, R. Mills and S.R. Hudson.
- 2008, 3 Feb - 7 Feb : ANZIAM, Australia and New Zealand Industrial and Applied Mathematics .
- poster : A novel variational principle for three-dimensional plasma equilibria. [(abstract)]
R.L. Dewar, S.R. Hudson, M. Hole and M.McGann.
- 2008, 3 Feb - 6 Feb : Gaseous Electronics Meeting XV, Murramarang, Australia.
- poster : A stepped Beltrami field model for internal transport barriers. [(paper)]
M.J. Hole, S.R. Hudson and R.L. Dewar.
- 2007, 11 Dec - 13 Dec : 8th Asia Pacific Plasma Theory Conference, Gujarat, India.
- talk : A stepped pressure profile model for internal transport barriers. [(slides)]
M.J.Hole, S.R. Hudson, R.L.Dewar, M.McGann and R.Mills.
- 2007, 12 Nov - 16 Nov : 49th Annual Meeting of the Division of Plasma Physics, Orlando, Florida.
- talk : A stepped pressure profile model for internal transport barriers. [(paper)]
M.J.Hole, S.R. Hudson and R.L.Dewar.
- 2007, 24 Sep - 27 Sep : 12th European Fusion Theory Conference, Madrid, Spain.
- paper : Multiple Nested Beltrami regions as a Solution to the 3-D Toroidal MHD Equilibrium Problem. [(paper)]
R. Dewar, M. Hole, S.R. Hudson and M. McGann.
- 2007, 17 Sep - 21 Sep : Nonlinear dynamics and chaos : advances and perspectives, Aberdeen, Scotland.
- invited talk : The MHD equilibrium problem in nonaxisymmetric toroidal plasma confinement systems. [(slides)]
R.L. Dewar, M.J. Hole, M. McGann and S.R. Hudson.
- 2007, 2 Jul - 5 Jul : 8th Asia-Pacific Complex Systems, Gold Coast, Australia.
- invited talk : Variational principle for relaxed states of a plasma confined by a nonintegrable magnetic field. [(paper)]
R. Dewar, M. Hole, S.R. Hudson and M. McGann.
- 2006, 16 Oct - 21 Oct : 21st IAEA Fusion Energy Conference, Chengdu, China.
- poster : Equilibria and Stability in Partially Relaxed Plasma-Vacuum Systems. [paper (pdf), poster (pdf)]
M. Hole, S.Hudson and R.L.Dewar.
- 2006, 22 Apr - 25 Apr : APS April Meeting
- invited talk : P16.00002 : Piecewise-Beltrami MHD equilibria. [abstract (pdf) ; slides (ppt)]
R. Dewar, M.J. Hole and S.Hudson
- 2005, 12 Jul - 15 Jul : 19th International Conference on Numerical Simulation of Plasmas and 7th Asia Pacific Plasma Theory Conference.
- invited talk : Stepped pressure profile equilibria in cylindrical plasmas via partial Taylor relaxation [abstract (pdf)]
Matthew Hole, Stuart Hudson and Robert Dewar.