Stellarator Publications, Talks, and Information

Plasma Flow Damping Studies
Experimental Evidence of Reduced Plasma Flow Damping with Quasisymmetry S.P. Gerhardt,J.N. Talmadge, J.M. Canik, and D.T. Anderson, Phys. Rev. Lett.

Measurements and modeling of plasma flow damping in the Helically Symmetric eXperiment S.P. Gerhardt, J.N. Talmadge, J.M. Canik, and D.T. Anderson, Phys. Plasmas

Electrode and Langmuir probe tools used for flow damping studies in the Helically Symmetric Experiment S.P. Gerhardt, D.T. Anderson, F.S.B. Anderson, and J.N. Talmadge, Rev. Sci. Instrum.

Halpha detector system for the Helically Symmetric Experiment S.P. Gerhardt, J.M. Canik, D.T. Anderson, L. Owen, Rev. Sci. Instrum.

Numerical calculation of the Hamada basis vectors for three-dimensional toroidal magnetic configurations J.N. Talmadge and S.P. Gerhardt, Phys. Plasmas

Calculations of neoclassical viscous damping on flux surfaces near magnetic islands in the Helically Symmetric Experiment S.P. Gerhardt, J.N. Talmadge and D.T. Anderson, Phys. Plasmas

Measurement and modeling of Electode Biased Discharges in the HSX Stellarator S.P. Gerhardt,et al, Presented at the 2004 IAEA Fusion Energy Conference, Vilamoura, Portugal, paper EX/8-3.

Other Publications

Experimental Evidence for Improved Confinement with Quasisymmetry in HSX S.P. Gerhardt, et al, Presented at the 2002 IAEA Fusion Energy Conference, Lyon, France, Paper EX/P3-22

First results from the multichannel interferometer system on HSX C. Deng et. al., Rev. Sci. Instrum

Comparison of electron cyclotron heating results in the helically symmetric experiment with and without quasi-symmetry K.M. Likin, et al., Plasma Phys. Control. Fusion
Selected Presentations
Measurements and Modeling of Plasma Flow Damping the in the HSX Stellarator Presented at the 2004 APD-DPP meeting.

Plasma flow damping in stellarators, Presented as part of a three part stellarator transport tutorial at PPPL.

This dissertation was awarded the 2005 APS Marshal Rosenbluth Award for dissertations in Plasma Physics. It also was awarded the 2005 Harold Peterson Award from the Electrical Engineering Department at the U. of Wisconsin-Madison.

Chapter 1 Introduction to the Research
Chapter 2 Electrode and Probe Diagnostics
Chapter 3 Kitchen Physics: Neutral Density and Ion Temperature Measurements
Chapter 4 Characteristics of Biased Electrode Discharges in HSX
Chapter 5 The Hamada Spectrum and Hamada Basis Vectors in HSX
Chapter 6 Neoclassical Modeling of Bias Induced Plasma Flows
Chapter 7 Comparison Between Neoclassical Modeling and Experimental Results
Chapter 8 Conclusions and Future Work

Appendix 1 Parts List, Drawings, and Technical Specifications for Diagnostic Systems in this Dissertation
Appendix 2 Configuration Flexibility in HSX
Appendix 3 Momentum Damping from Ion-Neutral Collisions
Appendix 4 Doppler Spectroscopy Measurements of Plasma Flow in HSX
Appendix 5 Viscous Damping in Various Configurations of HSX
Appendix 6 Plasma Flows, Radial Electric Fields, and Radial Currents in a 3D Electron-Ion Plasma.

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