Noninductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta
Abstract
Access to and characterization of sustained, toroidally confined plasmas with a very high plasma-to-magnetic pressure ratio (βt), low internal inductance, high elongation, and nonsolenoidal current drive is a central goal of present tokamak plasma research. Stable access to this desirable parameter space is demonstrated in plasmas with ultralow aspect ratio and high elongation. Local helicity injection provides nonsolenoidal sustainment, low internal inductance, and ion heating. Equilibrium analyses indicate βt up to ~100% with a minimum |B| well spanning up to ~50% of the plasma volume.
- Authors:
-
[1];
[1];
[1];
[1];
[1];
[1];
[1]
- Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics
- Publication Date:
- Research Org.:
- Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1377887
- Alternate Identifier(s):
- OSTI ID: 1371809
- Grant/Contract Number:
- FG02-96ER54375
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 119; Journal Issue: 3; Related Information: D.J. Schlossberg, G.M. Bodner, M.W. Bongard, M.G. Burke, R.J. Fonck, J.M. Perry, and J.A. Reusch, "Public Data Set: Noninductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta," DOI: 10.18138/1340695; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; tokamaks; nuclear fusion; equilibrium reconstruction; spherical tokamak; helicity injection; magnetic reconnection
Citation Formats
Schlossberg, David J., Bodner, Grant M., Bongard, Michael W., Burke, Marcus G., Fonck, Raymond J., Perry, Justin M., and Reusch, Joshua A. Noninductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta. United States: N. p., 2017.
Web. doi:10.1103/PhysRevLett.119.035001.
Schlossberg, David J., Bodner, Grant M., Bongard, Michael W., Burke, Marcus G., Fonck, Raymond J., Perry, Justin M., & Reusch, Joshua A. Noninductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta. United States. https://doi.org/10.1103/PhysRevLett.119.035001
Schlossberg, David J., Bodner, Grant M., Bongard, Michael W., Burke, Marcus G., Fonck, Raymond J., Perry, Justin M., and Reusch, Joshua A. Sat .
"Noninductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta". United States. https://doi.org/10.1103/PhysRevLett.119.035001. https://www.osti.gov/servlets/purl/1377887.
@article{osti_1377887,
title = {Noninductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta},
author = {Schlossberg, David J. and Bodner, Grant M. and Bongard, Michael W. and Burke, Marcus G. and Fonck, Raymond J. and Perry, Justin M. and Reusch, Joshua A.},
abstractNote = {Access to and characterization of sustained, toroidally confined plasmas with a very high plasma-to-magnetic pressure ratio (βt), low internal inductance, high elongation, and nonsolenoidal current drive is a central goal of present tokamak plasma research. Stable access to this desirable parameter space is demonstrated in plasmas with ultralow aspect ratio and high elongation. Local helicity injection provides nonsolenoidal sustainment, low internal inductance, and ion heating. Equilibrium analyses indicate βt up to ~100% with a minimum |B| well spanning up to ~50% of the plasma volume.},
doi = {10.1103/PhysRevLett.119.035001},
journal = {Physical Review Letters},
number = 3,
volume = 119,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 6 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Fusion nuclear science facilities and pilot plants based on the spherical tokamak
journal, August 2016
- Menard, J. E.; Brown, T.; El-Guebaly, L.
- Nuclear Fusion, Vol. 56, Issue 10
Continuous, edge localized ion heating during non-solenoidal plasma startup and sustainment in a low aspect ratio tokamak
journal, May 2017
- Burke, M. G.; Barr, J. L.; Bongard, M. W.
- Nuclear Fusion, Vol. 57, Issue 7, Article No. 076010
Solenoid-free plasma start-up in spherical tokamaks
journal, September 2014
- Raman, R.; Shevchenko, V. F.
- Plasma Physics and Controlled Fusion, Vol. 56, Issue 10
Recent progress on spherical torus research
journal, April 2015
- Ono, Masayuki; Kaita, Robert
- Physics of Plasmas, Vol. 22, Issue 4
Tokamak startup using outboard current injection on the Pegasus Toroidal Experiment
journal, June 2011
- Battaglia, D. J.; Bongard, M. W.; Fonck, R. J.
- Nuclear Fusion, Vol. 51, Issue 7
Calculation and interpretation of analytic high‐beta poloidal equilibria in finite aspect ratio tokamaks
journal, January 1996
- Hsu, S. C.; Artun, M.; Cowley, S. C.
- Physics of Plasmas, Vol. 3, Issue 1
H-mode plasmas at very low aspect ratio on the Pegasus Toroidal Experiment
journal, September 2016
- Thome, K. E.; Bongard, M. W.; Barr, J. L.
- Nuclear Fusion, Vol. 57, Issue 2, Article No. 022018
Mechanisms of stochastic diffusion of energetic ions in spherical tori
journal, June 2002
- Kolesnichenko, Ya. I.; White, R. B.; Yakovenko, Yu. V.
- Physics of Plasmas, Vol. 9, Issue 6
Multi-point, high-speed passive ion velocity distribution diagnostic on the Pegasus Toroidal Experiment
journal, October 2012
- Burke, M. G.; Fonck, R. J.; Bongard, M. W.
- Review of Scientific Instruments, Vol. 83, Issue 10
Neoclassical conductivity and bootstrap current formulas for general axisymmetric equilibria and arbitrary collisionality regime
journal, July 1999
- Sauter, O.; Angioni, C.; Lin-Liu, Y. R.
- Physics of Plasmas, Vol. 6, Issue 7
Improvement of neutral beam injection heating efficiency with magnetic field well structures in a tokamak with a low magnetic field
journal, August 2016
- Kim, S. K.; Na, D. H.; Lee, J. W.
- Nuclear Fusion, Vol. 56, Issue 10
Equilibrium properties at very low aspect ratio in the Pegasus toroidal experiment
journal, August 2008
- Sontag, A. C.; Diem, S. J.; Fonck, R. J.
- Nuclear Fusion, Vol. 48, Issue 9
Tokamak Startup Using Point-Source dc Helicity Injection
journal, June 2009
- Battaglia, D. J.; Bongard, M. W.; Fonck, R. J.
- Physical Review Letters, Vol. 102, Issue 22
High-beta characteristics of first and second-stable spherical tokamaks in reconnection heating experiments of TS-3
journal, August 2003
- Ono, Y.; Kimura, T.; Kawamori, E.
- Nuclear Fusion, Vol. 43, Issue 8
Overview of JT-60U results leading to high integrated performance in reactor-relevant regimes
journal, December 2003
- Fujita, T.; Team, the JT-60
- Nuclear Fusion, Vol. 43, Issue 12
Optimization of DIII-D advanced tokamak discharges with respect to the β limit
journal, May 2005
- Ferron, J. R.; Casper, T. A.; Doyle, E. J.
- Physics of Plasmas, Vol. 12, Issue 5
Erratum: “Neoclassical conductivity and bootstrap current formulas for general axisymmetric equilibria and arbitrary collisionality regime” [Phys. Plasmas 6 , 2834 (1999)]
journal, December 2002
- Sauter, O.; Angioni, C.; Lin-Liu, Y. R.
- Physics of Plasmas, Vol. 9, Issue 12
Integrated plasma physics modelling for the Culham steady state spherical tokamak fusion power plant
journal, July 2004
- Wilson, H. R.; Ahn, J. -W; Akers, R. J.
- Nuclear Fusion, Vol. 44, Issue 8
An optimization of beta in the DIII‐D tokamak
journal, November 1992
- Lazarus, E. A.; Lao, L. L.; Osborne, T. H.
- Physics of Fluids B: Plasma Physics, Vol. 4, Issue 11
Features of spherical torus plasmas
journal, June 1986
- Peng, Y-K. M.; Strickler, D. J.
- Nuclear Fusion, Vol. 26, Issue 6
High-performance discharges in the Small Tight Aspect Ratio Tokamak (START)
journal, May 1998
- Gates, D. A.; Akers, R.; Appel, L.
- Physics of Plasmas, Vol. 5, Issue 5
Aspect ratio scaling of ideal no-wall stability limits in high bootstrap fraction tokamak plasmas
journal, February 2004
- Menard, J. E.; Bell, M. G.; Bell, R. E.
- Physics of Plasmas, Vol. 11, Issue 2
A novel, cost-effective, multi-point Thomson scattering system on the Pegasus Toroidal Experiment (invited)
journal, September 2016
- Schlossberg, D. J.; Bodner, G. M.; Bongard, M. W.
- Review of Scientific Instruments, Vol. 87, Issue 11, Article No. 11E403
Wall Stabilization of High Beta Tokamak Discharges in DIII-D
journal, March 1995
- Strait, E. J.; Taylor, T. S.; Turnbull, A. D.
- Physical Review Letters, Vol. 74, Issue 13
Some considerations on closed configurations of magnetohydrostatic equilibrium
journal, February 1968
- Palumbo, D.
- Il Nuovo Cimento B Series 10, Vol. 53, Issue 2
The direct criterion of Newcomb for the ideal MHD stability of an axisymmetric toroidal plasma
journal, July 2016
- Glasser, A. H.
- Physics of Plasmas, Vol. 23, Issue 7
High β, long pulse, bootstrap sustained scenarios on the National Spherical Torus Experiment (NSTX)
journal, May 2003
- Gates, D. A.
- Physics of Plasmas, Vol. 10, Issue 5
Achievement of Record in the START Spherical Tokamak
journal, May 1998
- Gryaznevich, M.; Akers, R.; Carolan, P. G.
- Physical Review Letters, Vol. 80, Issue 18
Energetic particle orbits in the National Spherical Tokamak Experiment
journal, October 1997
- Mikkelsen, D. R.; White, R. B.; Akers, R. J.
- Physics of Plasmas, Vol. 4, Issue 10
Spherical torus concept as power plants—the ARIES-ST study
journal, February 2003
- Najmabadi, F.
- Fusion Engineering and Design, Vol. 65, Issue 2
The spherical tokamak programme at Culham
journal, September 1999
- Sykes, A.; Team, the START; Team, the NBI
- Nuclear Fusion, Vol. 39, Issue 9Y
Fishbone Mode in Spherical Tokamaks
journal, April 1999
- Kolesnichenko, Ya. I.; Lutsenko, V. V.; Marchenko, V. S.
- Physical Review Letters, Vol. 82, Issue 16
Chapter 3: MHD stability, operational limits and disruptions
journal, June 2007
- Hender, T. C.; Wesley, J. C.; Bialek, J.
- Nuclear Fusion, Vol. 47, Issue 6
Initial Experiments at High Normalized Current in the Pegasus Toroidal Experiment
journal, December 2006
- Unterberg, E. A.; Battaglia, D. J.; Bongard, M. W.
- Journal of Fusion Energy, Vol. 26, Issue 1-2
Public Data Set: Non-Inductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta
dataset, July 2017
- Schlossberg, David; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: 10.1103/PhysRevLett.119.035001, 1 file (3.6 MB)
Public Data Set: A Power-Balance Model for Local Helicity Injection Startup in a Spherical Tokamak
dataset, May 2018
- Barr, J. L.; Bongard, M. W.; Burke, M. G.
- Pegasus Public Data Sets
Public Data Set: Non-inductively Driven Tokamak Plasmas at Near-Unity βt in the Pegasus Toroidal Experiment
dataset, March 2018
- Reusch, Joshua; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: 10.1063/1.5017966, 1 file (5.1 MB)
Public Data Set: Initiation and Sustainment of Tokamak Plasmas with Local Helicity Injection as the Majority Current Drive
dataset, July 2018
- Perry, Justin; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: https://doi.org/10.1088/1741-4326/aac72e, 1 file (17.1 MB)
Public Data Set: Radially Scanning Magnetic Probes to Study Local Helicity Injection Dynamics
dataset, July 2018
- Richner, Nathan; Bongard, Michael; Fonck, Raymond
- Pegasus-Supplementary information for journal article at DOI: 10.1063/1.5036527, 1 file (9.4 MB)
Public Data Set: Advancing Local Helicity Injection for Non-Solenoidal Tokamak Startup
dataset, January 2019
- Bongard, Michael; Bodner, Grant; Burke, Marcus
- University of Wisconsin-Madison
Public Data Set: Non-Inductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta
dataset, July 2017
- Schlossberg, David; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: 10.1103/PhysRevLett.119.035001, 1 file (3.6 MB)
Public Data Set: A Power-Balance Model for Local Helicity Injection Startup in a Spherical Tokamak
dataset, May 2018
- Barr, J. L.; Bongard, M. W.; Burke, M. G.
- Pegasus Public Data Sets
Public Data Set: Non-inductively Driven Tokamak Plasmas at Near-Unity βt in the Pegasus Toroidal Experiment
dataset, March 2018
- Reusch, Joshua; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: 10.1063/1.5017966, 1 file (5.1 MB)
Public Data Set: Initiation and Sustainment of Tokamak Plasmas with Local Helicity Injection as the Majority Current Drive
dataset, July 2018
- Perry, Justin; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: https://doi.org/10.1088/1741-4326/aac72e, 1 file (17.1 MB)
Public Data Set: Radially Scanning Magnetic Probes to Study Local Helicity Injection Dynamics
dataset, July 2018
- Richner, Nathan; Bongard, Michael; Fonck, Raymond
- Pegasus-Supplementary information for journal article at DOI: 10.1063/1.5036527, 1 file (9.4 MB)
Public Data Set: Advancing Local Helicity Injection for Non-Solenoidal Tokamak Startup
dataset, January 2019
- Bongard, Michael; Bodner, Grant; Burke, Marcus
- University of Wisconsin-Madison
Works referencing / citing this record:
Non-inductively driven tokamak plasmas at near-unity βt in the P egasus toroidal experiment
journal, May 2018
- Reusch, J. A.; Bodner, G. M.; Bongard, M. W.
- Physics of Plasmas, Vol. 25, Issue 5
Public Data Set: Non-Inductively Driven Tokamak Plasmas at Near-Unity Toroidal Beta
dataset, July 2017
- Schlossberg, David; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: 10.1103/PhysRevLett.119.035001, 1 file (3.6 MB)
Public Data Set: A Power-Balance Model for Local Helicity Injection Startup in a Spherical Tokamak
dataset, May 2018
- Barr, J. L.; Bongard, M. W.; Burke, M. G.
- Pegasus Public Data Sets
Public Data Set: Non-inductively Driven Tokamak Plasmas at Near-Unity βt in the Pegasus Toroidal Experiment
dataset, March 2018
- Reusch, Joshua; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: 10.1063/1.5017966, 1 file (5.1 MB)
Public Data Set: Initiation and Sustainment of Tokamak Plasmas with Local Helicity Injection as the Majority Current Drive
dataset, July 2018
- Perry, Justin; Bodner, Grant; Bongard, Michael
- Pegasus-Supplementary information for journal article at DOI: https://doi.org/10.1088/1741-4326/aac72e, 1 file (17.1 MB)
Public Data Set: Radially Scanning Magnetic Probes to Study Local Helicity Injection Dynamics
dataset, July 2018
- Richner, Nathan; Bongard, Michael; Fonck, Raymond
- Pegasus-Supplementary information for journal article at DOI: 10.1063/1.5036527, 1 file (9.4 MB)
Public Data Set: Spatial Heterodyne Spectroscopy for High Speed Measurements of Stark Split Neutral Beam Emission in a High Temperature Plasma
dataset, January 2018
- Burke, Marcus; Fonck, Raymond; McKee, George
- University of Wisconsin-Madison
Public Data Set: Advancing Local Helicity Injection for Non-Solenoidal Tokamak Startup
dataset, January 2019
- Bongard, Michael; Bodner, Grant; Burke, Marcus
- University of Wisconsin-Madison