Impact of magnetic islands in the plasma edge on particle fueling and exhaust in the HSX and W7-X stellarators

L. Stephey, A. Bader, F. Effenberg, O. Schmitz, D. T. Anderson, F. S. B. Anderson, H. Frerichs, I. Waters
University of Wisconsin-Madison, Madison, WI, USA
G. A. Wurden
Los Alamos National Laboratory, Los Alamos, NM, USA
C. Biedermann, A. Dinklage, Y. Feng, G. Fuchert, J. Geiger, R. Konig, P. Kornejew, M. Krychowiak
Max-Planck Institut fur Plasmaphysik, Greifswald, Germany
J. H. Harris, J. D. Lore, E. A. Unterberg
Oak Ridge National Laboratory, Oak Ridge, TN

File: Impact-of-magnetic-islands-in-the-plasma-edge-on-particle-fueling-and-exhaust-in-the-HSX-and-W7-X-stellarators_Stephey_et-al_2018.pdf

Physics of Plasmas, Volume 25, May 2018
L. Stephey, A. Bader, F. Effenberg, O. Schmitz, D. T. Anderson, F. S. B. Anderson, H. Frerichs, I. Waters
University of Wisconsin-Madison, Madison, WI, USA
G. A. Wurden
Los Alamos National Laboratory, Los Alamos, NM, USA
C. Biedermann, A. Dinklage, Y. Feng, G. Fuchert, J. Geiger, R. Konig, P. Kornejew, M. Krychowiak
Max-Planck Institut fur Plasmaphysik, Greifswald, Germany
J. H. Harris, J. D. Lore, E. A. Unterberg
Oak Ridge National Laboratory, Oak Ridge, TN

Improving the stellarator through advances in plasma theory

Nuclear Fusion, Volume 61, September 2021 (Accepted)
C. C. Hegna, D. T. Anderson, A. Bader, T. A. Bechtel, J. M. Duff, B. J. Faber, T. G. Kruger, I. J. McKinney, P. W. Terry
HSX Laboratory, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706
A. Bhattacharjee, M. Cole, S. R. Hudson, E. Paul, M. Zarnstorff, C. Zhu
Princeton Plasma Physics Laboratory, Princeton, NJ, USA
M. Drevlak
Max-Planck Institut für Plasmaphysik, Greifswald, Germany
M. Kotschenreuther
University of Texas, Austin, TX, USA
M. Landreman
University of Maryland, College Park, MD, USA
M. J. Pueschel
Eindhoven University of Technology, Eindhoven, The Netherlands
Dutch Institute for Fundamental Energy Research, Eindhoven, The Netherlands
J. S. Schmitt
Department of Physics, Auburn University, Auburn, AL, USA
A. S. Ware
Department of Physics, University of Montana, Missoula, MT, USA

Nuclear Fusion, Volume 61, September 2021 (Accepted)
C. C. Hegna, D. T. Anderson, A. Bader, T. A. Bechtel, J. M. Duff, B. J. Faber, T. G. Kruger, I. J. McKinney, P. W. Terry
HSX Laboratory, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706
A. Bhattacharjee, M. Cole, S. R. Hudson, E. Paul, M. Zarnstorff, C. Zhu
Princeton Plasma Physics Laboratory, Princeton, NJ, USA
M. Drevlak
Max-Planck Institut für Plasmaphysik, Greifswald, Germany
M. Kotschenreuther
University of Texas, Austin, TX, USA
M. Landreman
University of Maryland, College Park, MD, USA
M. J. Pueschel
Eindhoven University of Technology, Eindhoven, The Netherlands
Dutch Institute for Fundamental Energy Research, Eindhoven, The Netherlands
J. S. Schmitt
Department of Physics, Auburn University, Auburn, AL, USA
A. S. Ware
Department of Physics, University of Montana, Missoula, MT, USA

Impurity seeding for radiative power exhaust in the W7-X Island Divertor

F. Effenberg, O. Schmitz, T. Barbui, H. Frerichs, V. Winters
HSX Plasma Laboratory, University of Wisconsin, Madison, USA
S. Brezinsek
Forschungszentrum Julich GmbH, Institut fur Energie und Klimaforschung Plasmaphysik Julich, Germany
Y. Feng, M. Jakubowski, R. Konig, M. Krychowiak, H. Niemann, F. Reimold, D. Zhang, R. Burhenn, B. Buttenschon, J. Geiger, M. Otte, V. Perseo, T. Sunn Pedersen
Max Planck Institut fur Plasmaphysik, Greifswald, Germany
Y. Suzuki
National Institute for Fusion Science, Japan
G. Kocsis, T. Szepesi
Wigner Research Center for Physics, Budapest, Hungary
J. D. Lore
Oak Ridge National Laboratory, Tennessee, USA

File: Impurity_Seeding_Power_Exhaust_Effenberg_v1.pdf

Impurity transport studies at the HSX stellarator using active and passive CVI spectroscopy

Plasma Physics and Controlled Fusion, Volume 64, November 2022
C. Swee, B. Geiger, S. T. A. Kumar, J. F. Castillo, A. Bader, and M. Gerard
HSX Laboratory, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706
R. Dux
Max-Planck Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching, Germany

File: Impurity-transport-studies-at-the-HSX-stellarator-using-active-and-passive-CVI-spectroscopy_Swee_et-al_2022.pdf

Plasma Physics and Controlled Fusion, Volume 64, November 2022
C. Swee, B. Geiger, S. T. A. Kumar, J. F. Castillo, A. Bader, and M. Gerard
HSX Laboratory, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706
R. Dux
Max-Planck Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching, Germany

Including the parallel mass flow in calculating the steady-state solutions and stability of the momentum balance equations for a quasisymmetric stellarator

Michaelides, D. N. and Talmadge, J. N.
HSX Plasma Laboratory, University of Wisconsin, Madison, Wisconsin 53703, USA

File: Including-the-parallel-mass-flow_quasisymmetric-stellarator_Michaelides_Talmadge_2024.pdf

Physics of Plasmas, Volume 31, February 2024
Michaelides, D. N. and Talmadge, J. N.
HSX Plasma Laboratory, University of Wisconsin, Madison, Wisconsin 53703, USA

Influence of magnetic topology on transport and stability in stellarators

Plasma Physics and Controlled Fusion, Volume 47, Number12B, December 2005
F. Castejón, T. Estrada, D. López-Bruna, C. Hidalgo
Laboratorio Nacional de Fusión. Asociación Euratom/Ciemat, 28040-Madrid, Spain
A. Fujisawa, K. Ida
National Institute for Fusion Science Oroshi-cho, Toki-shi, Gifu, 509-5292 Japan
J. N. Talmadge
University of Wisconsin-Madison, Madison, Wisconsin 53706 USA
L. Krupnik
Institute of Plasma Physics, NSC ‘KIPT’, Kharkov, Ukraine
A. Melnikov
Institute of Nuclear Fusion, RRC ‘Kurchatov Institute’, Moscow, Russia

File: Influence-of-magnetic-topology-on-transport-and-stability-in-stellarators_Castejon_Fujisawa_Ida_Talmadge_et-al_2005.pdf

Plasma Physics and Controlled Fusion, Volume 47, Number12B, December 2005
F. Castejón, T. Estrada, D. López-Bruna, C. Hidalgo
Laboratorio Nacional de Fusión. Asociación Euratom/Ciemat, 28040-Madrid, Spain
A. Fujisawa, K. Ida
National Institute for Fusion Science Oroshi-cho, Toki-shi, Gifu, 509-5292 Japan
J. N. Talmadge
University of Wisconsin-Madison, Madison, Wisconsin 53706 USA
L. Krupnik
Institute of Plasma Physics, NSC ‘KIPT’, Kharkov, Ukraine
A. Melnikov
Institute of Nuclear Fusion, RRC ‘Kurchatov Institute’, Moscow, Russia


Return to Plasma Physics and Controlled Fusion 2005 publications

Internal electron transport barrier due to neoclassical ambipolarity in the Helically Symmetric Experiment

Physics of Plasmas, Volume 17, Issue 5, May 2010
J. Lore, A. Briesemeister, D. T. Anderson, F. S. B. Anderson, K. M. Likin, J. N. Talmadge, K. Zhai
Department of Electrical and Computer Engineering, University of Wisconsin - Madison, Madison, Wisconsin 53706, USA
W. Guttenfelder
Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
C. B. Deng
Department of Physics, University of California - Los Angeles, Los Angeles, California 90024, USA
D. A. Spong
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

File: Internal-electron-transport-barrier-due-to-neoclassical-ambipolarity-in-the-Helically-Symmetric-Experiment_Lore_Guttenfelder_et-al_2010.pdf

Physics of Plasmas, Volume 17, Issue 5, May 2010
J. Lore, A. Briesemeister, D. T. Anderson, F. S. B. Anderson, K. M. Likin, J. N. Talmadge, K. Zhai
Department of Electrical and Computer Engineering, University of Wisconsin – Madison, Madison, Wisconsin 53706, USA
W. Guttenfelder
Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
C. B. Deng
Department of Physics, University of California – Los Angeles, Los Angeles, California 90024, USA
D. A. Spong
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA


Return to Physics of Plasmas 2010 publications

Intrinsic plasma rotation and Reynolds stress at the plasma edge in the HSX stellarator

Nuclear Fusion, Volume 56, Number 3, March 2016
R. S. Wilcox*, J. D. Lore
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
R. S. Wilcox*, J. N. Talmadge, D. T. Anderson, F. S. B. Anderson
Department of Electrical and Computer Engineering, University of Wisconsin: Madison, Madison, WI 53706, USA

*Listed in more than one department

File: Intrinsic-plasma-rotation-and-Reynolds-stress-at-the-plasma-edge-in-the-HSX-stellarator_Wilcox_Talmadge_Anderson-DT_Anderson-FSB_Lore_2016.pdf

Nuclear Fusion, Volume 56, Number 3, March 2016
R. S. Wilcox*, J. D. Lore
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
R. S. Wilcox*, J. N. Talmadge, D. T. Anderson, F. S. B. Anderson
Department of Electrical and Computer Engineering, University of Wisconsin: Madison, Madison, WI 53706, USA

*Listed in more than one department


Return to Nuclear Fusion 2016 publications

Investigation of impact of radiation cooling on startup plasmas at Wendelstein 7-X with EMC3-Eirene simulations

F. Effenberg, H. Frerichs, O. Schmitz
Department for Engineering Physics, University of Wisconsin - Madison, Madison, WI, USA
Y. Feng, S. A. Bozhenkov, H. Hoelbe, T. S. Pedersen
Max-Planck Institute for Plasma Physics, Association EURATOM-IPP, 17491 Greifswald, Germany
D. Reiter
Institute of Energy and Climate Research - Plasma Physics, Forschungszentrum Juelich GmbH, Association EURATOM-FZJ, 52425 Juelich, Germany

Full Publication and Content Data

File: Investigation-of-impact-of-radiation-cooling-on-startup-plasmas-at-Wendelstein-7-X-with-EMC3-Eirene-simulations.pdf

Kinetic ballooning mode turbulence in low-average-magnetic-shear equilibria

I. J. McKinney, B. J. Faber, C. C. Hegna, P. W. Terry
HSX Plasma Laboratory, University of Wisconsin, Madison, Wisconsin 53703, USA
M. J. Pueschel
Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
Dutch Institute for Fundamental Energy Research, 5612 AJ Eindhoven, Netherlands
A. Ishizawa
Graduate School of Energy Science, Kyoto University, Kyoto, Japan

File: Kinetic-ballooning-mode-turbulence-in-low-average-magnetic-shear-equilibria_McKinney_et-al_2021.pdf

Journal of Plasma Physics, Volume 87, Issue 3, 2021
I. J. McKinney, B. J. Faber, C. C. Hegna, P. W. Terry
HSX Plasma Laboratory, University of Wisconsin, Madison, Wisconsin 53703, USA
M. J. Pueschel
Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
Dutch Institute for Fundamental Energy Research, 5612 AJ Eindhoven, Netherlands
A. Ishizawa
Graduate School of Energy Science, Kyoto University, Kyoto, Japan

Laser blow-off with photodiode detection system at the helically symmetric experiment

Journal of Instrumentation, Volume 16, November 2021
J. F. Castillo, C. Clark, A. Bader, K. M. Likin, D. T. Anderson, B. Geiger, S. T. A. Kumar, and C. Swee
HSX Laboratory, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706

File: Laser-blowoff-with-photodiode-detection-system-at-the-helically-symmetric-experiment_Castillo_et-al_2021.pdf

Journal of Instrumentation, Volume 16, November 2021
J. F. Castillo, C. Clark, A. Bader, K. M. Likin, D. T. Anderson, B. Geiger, S. T. A. Kumar, and C. Swee
HSX Laboratory, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706

Local ideal magnetohydrodynamic stability of a quasihelically symmetric stellarator

Physics of Plasmas, Volume 3, Issue 10, October 1996
J. N. Talmadge
Torsatron/Stellarator Laboratory, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691
W. A. Cooper
Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, CRPP-PPB, CH-1015 Lausanne, Switzerland

File: Local-ideal-magnetohydrodynamic-stability-of-a-quasihelically-symmetric-stellarator_Talmadge_Cooper_1996.pdf

Physics of Plasmas, Volume 3, Issue 10, October 1996
J. N. Talmadge
Torsatron/Stellarator Laboratory, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691
W. A. Cooper
Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, CRPP-PPB, CH-1015 Lausanne, Switzerland


Return to Physics of Plasmas 1996 publications

Magnetic diagnostic optimization for plasma equilibrium reconstruction in the HSX stellarator

Nuclear Fusion, Volume 55, Number 11, November 2015
E. Chlechowitz, J. N. Talmadge, F. S. B. Anderson, D. T. Anderson
Department of Electrical and Computer Engineering, University of Wisconsin–Madison, Madison, Wisconsin 53706, USA
J. D. Hanson
Physics Department, Auburn University, Auburn, Alabama 36849, USA

File: Magnetic-diagnostic-optimization-for-plasma-equilibrium-reconstruction-in-the-HSX-stellarator_Chlechowitz_Talmadge_Hanson_Anderson-FSB_Anderson-DT_2015.pdf

Nuclear Fusion, Volume 55, Number 11, November 2015
E. Chlechowitz, J. N. Talmadge, F. S. B. Anderson, D. T. Anderson
Department of Electrical and Computer Engineering, University of Wisconsin–Madison, Madison, Wisconsin 53706, USA
J. D. Hanson
Physics Department, Auburn University, Auburn, Alabama 36849, USA


Return to Nuclear Fusion 2015 publications

Magnetic fluctuation measurements in HSX and its impact on transport

APS 2004
S. Oh, A. F. Almagri, D. T. Anderson, C. Deng, C. Lechte, K. M. Likin, J. N. Talmadge, J. Schmitt
HSX Plasma Laboratory, U. of Wisconsin-Madison, USA

Full Publication and Content Data

File: Magnetic-fluctuation-measurements-in-HSX-and-its-impact-on-transport.pdf

APS 2004
S. Oh, A. F. Almagri, D. T. Anderson, C. Deng, C. Lechte, K. M. Likin, J. N. Talmadge, J. Schmitt
HSX Plasma Laboratory, U. of Wisconsin-Madison, USA


Full Publication Data

Oh_APS 2004.ppt


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Magnetic mesh generation and field line reconstruction for scrape-off layer and divertor modeling in stellarators

H. Frerichs, D. Boeyaert, K. A. Garcia
Department of Nuclear Engineering & Engineering Physics, University of Wisconsin-Madison, Madison, WI, USA
Y. Feng
Max-Planck Institut fur Plasmaphysik, Greifswald, Germany

File: Magnetic-mesh-generation-and-field-line-reconstruction-for-scrape-off-layer-and-divertor-modeling-in-stellarators_Frerichs_et-al_2025.pdf

Plasma Physics and Controlled Fusion, Volume 67, March 2025
H. Frerichs, D. Boeyaert, K. A. Garcia
Department of Nuclear Engineering & Engineering Physics, University of Wisconsin-Madison, Madison, WI, USA
Y. Feng
Max-Planck Institut fur Plasmaphysik, Greifswald, Germany

Measurement and Modeling of Electrode Biased Discharges in the HSX Stellarator

Presented at the 2004 IAEA Fusion Energy Conference, Vilamoura, Portugal, paper EX/8-3.
S.P. Gerhardt, A.F. Almagri, D.T. Anderson, F.S.B. Anderson, J.M. Canik, C. Deng, W. Guttenfelder, K.M. Likin, V. Sakaguchi, J.N. Talmadge, K. Zhai
HSX Stellarator, University of Wisconsin-Madison, USA
D. Brower
Electrical Engineering Department, University of California, Los Angeles, USA

File: Measurement-and-Modeling-of-Electrode-Biased-Discharges-in-the-HSX-Stellarator.pdf

Presented at the 2004 IAEA Fusion Energy Conference, Vilamoura, Portugal, paper EX/8-3
S.P. Gerhardt, A.F. Almagri, D.T. Anderson, F.S.B. Anderson, J.M. Canik, C. Deng, W. Guttenfelder, K.M. Likin, V. Sakaguchi, J.N. Talmadge, K. Zhai 
HSX Stellarator, University of Wisconsin-Madison, USA
D. Brower
Electrical Engineering Department, University of California, Los Angeles, USA

Measurement of a helical Pfirsch–Schlüter current with reduced magnitude in HSX

Nuclear Fusion, Volume 53, Number 8, August 2013
J.C. Schmitt, J.N. Talmadge and D.T. Anderson
Department of Electrical and Computer Engineering, University of Wisconsin-Madison,Madison, Wisconsin 53706, USA

File: Measurement-of-a-helical-Pfirsch–Schlüter-current-with-reduced-magnitude-in-HSX.pdf

Nuclear Fusion, Volume 53, Number 8, August 2013
J.C. Schmitt, J.N. Talmadge and D.T. Anderson
Department of Electrical and Computer Engineering, University of Wisconsin-Madison,Madison, Wisconsin 53706, USA


Measurements of the helical rotation and the reduction of the magnitude of the Pfirsch–Schlüter current compared to an equivalent tokamak are reported in a device that has quasihelical symmetry


Return to Nuclear Fusion 2013 publications

Measurement of Electron Density Profile and Fluctuations on HSX

APS 2001
C. Deng, D. L. Brower, W. X. Ding
Electrical Engineering Department, University of California, Los Angeles
A. F. Almagri, D. T. Anderson, F. S. B. Anderson, S. P. Gerhardt, P. Probert, J. Radder, J. N. Talmadge
The HSX Plasma Laboratory, University of Wisconsin-Madison

Full Publication and Content Data

File: Measurement-of-Electron-Density-Profile-and-Fluctuations-on-HSX1.pdf

APS 2001
C. Deng, D. L. Brower, W. X. Ding
Electrical Engineering Department, University of California, Los Angeles
A. F. Almagri, D. T. Anderson, F. S. B. Anderson, S. P. Gerhardt, P. Probert, J. Radder, J. N. Talmadge
The HSX Plasma Laboratory, University of Wisconsin-Madison


Full Publication Data

CDeng_APS 2001.ppt


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Measurement of limiter particle fluxes and carbon erosion in the helical scrape-off layer of startup plasmas at W7-X

V. Winters, O. Schmitz, F. Effenberg, H. Frerichs
Department of Engineering Physics, Univ. of Wisconsin, Madison, USA
L. Stephey
HSX Plasma Laboratory, Univ. of Wisconsin, Madison, USA
S. Brezinsek, M. Rasinski
Forschungszentrum Julich GmbH, Institut fur Energie und Klimaforschung Plasmaphysik Julich, Germany
W7-X Team
Max Planck Institut fur Plasmaphysik, Greifswald, Germany
J. Harris, E. Unterberg
Oak Ridge National Laboratory, Tennessee, USA
G. Wurden
Los Alamos National Laboratory, New Mexico, USA

File: 4_CWGM-mtg-2017-vw.pdf