Download or read book The Madison Symmetric Torus written by and published by . This book was released on 1990 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Madison Symmetric Torus written by R.N. Dexter and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Madison Symmetric Torus MST University of Wisconsin Madison written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces the Madison Symmetric Torus (MST), a toroidal reversed field pinch device for the study of plasma physics and magnetic fusion energy research operating out of the Department of Physics at the University of Wisconsin-Madison. Describes the MST as a large RFP reversed field pinch with a minor radius of 0.52 m and a major radius of 1.5 m. Includes specifications of device and plasma parameters, answers to frequently asked questions, information for prospective graduate students, and related programs at UW-M. Lists senior staff of the Physics Department.

Download or read book Electron Thermal Transport in the Madison Symmetric Torus written by Theodore Mathias Biewer and published by . This book was released on 2002 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of Two fluid Relaxation in the Madison Symmetric Torus written by Joseph C. Triana and published by . This book was released on 2017 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Electrical Resistivity Profile in the Madison Symmetric Torus written by Jay K. Anderson and published by . This book was released on 2001 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CONFINEMENT AND FLUCTUATIONS IN THE MST MADISON SYMMETRIC TORUS REVERSED FIELD PINCH written by J.C. SPROTT and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oscillating Field Current Drive Experiments in the Madison Symmetric Torus written by Arthur P. Blair and published by . This book was released on 2006 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AN ENERGY CONFINEMENT STUDY OF THE MADISON SYMMETRIC TORUS REVERSED FIELD PINCH USING A THOMSON SCATTERING DIAGNOSTIC written by D.J. DEN HARTOG and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reversed field Pinch Studies in the Madison Symmetric Torus written by and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of large-size (R = 1.5 m, a = 0.5 m), moderate current (I

Download or read book Measured and Simulated Election Thermal Transport in the Madison Symmetric Torus Reversed Field Pinch written by Joshua Adam Reusch and published by . This book was released on 2011 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Density and Beta Limits in the Madison Symmetric Torus Reversed Field Pinch written by and published by . This book was released on 2014 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Operational limits and the underlying physics are explored on the Madison Symmetric Torus (MST) Reversed-Field Pinch (RFP) using deuterium pellet fueling. The injection of a fast pellet provides a large source of fuel in the plasma edge upon impact with the vessel wall, capable of triggering density limit terminations for the full range of plasma current, up to 600 kA. As the pellet size and plasma density increase, approaching the empirical Greenwald limit, plasma degradation is observed in the form of current decay, increased magnetic activity in the edge and core, increased radiation and plasma cooling. The complete termination of the plasma is consistent with the Greenwald limit; however, a slightly smaller maximum density is observed in discharges without toroidal field reversal. The plasma beta is the ratio of the plasma pressure to the confining magnetic pressure. Beta limits are known to constrain other magnetic confinement devices, but no beta limit has yet been established on the RFP. On MST, the highest beta values are obtained in improved confinement discharges with pellet fueling. By using pellet injection to scan the plasma density during PPCD, we also achieve a scan of Ohmic input power due to the increase in plasma resistivity. We observe a factor of 3 or more increase in Ohmic power as we increase the density from 1*1019 to 3*1019 m-3. Despite this increased Ohmic power, the electron contribution to beta is constant, suggesting a confinement limited beta for the RFP. The electrons and ions are classically well coupled in these cold, dense pellet fueled plasmas, so the increase in total beta at higher density is primarily due to the increased ion contribution. The interaction of pellet fueling and NBI heating is explored. Modeling of MST's neutral heating beam suggests an optimal density for beam power deposition of 2-3*1019 m-3. Low current, NBI heated discharges show evidence of an increased electron beta in this density range. Additionally, the fast ion population can enhance ablation as well as cause pellet deflection. Other exploratory experiments with the pellet injection system explore additional injection scenarios and expand the injector capabilities.

Download or read book Nonlinear Coupling of Tearing Fluctuations in the Madison Symmetric Torus written by and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three-wave, nonlinear, tearing mode coupling has been measured in the Madison Symmetric Torus (MST) reversed-field pinch (RFP) [Fusion Technol. 19, 131 (1991)] using bispectral analysis of edge magnetic fluctuations resolved in k-space. The strength of nonlinear three-wave interactions satisfying the sum rules m[sub 1] + m[sub 2] = m[sub 3] and n[sub 1] + n[sub 2] = n[sub 3] is measured by the bicoherency. In the RFP, m=l, n[approximately]2R/a (6 for MST) internally resonant modes are linearly unstable and grow to large amplitude. Large values of bicoherency occur for two m=l modes coupled to an m=2 mode and the coupling of intermediate toroidal modes, e.g., n=6 and 7 coupled to n=13. These experimental bispectral features agree with predicted bispectral features derived from MHD computation. However, in the experiment, enhanced coupling occurs in the crash'' phase of a sawtooth oscillation concomitant with a broadened mode spectrum suggesting the onset of a nonlinear cascade.

Download or read book Measurement of Magnetic Turbulence Structure and Nonlinear Mode Coupling of Tearing Fluctuations in the Madison Symmetric Torus Reversed Field Pinch Edge written by Saeed Assadi and published by . This book was released on 1994 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of Magnetic Field of a Toroidal Plasma in Madison Symmetric Torus from 3D Ion Beam Trajectory Image Reconstruction Techniques written by Chao Ling and published by . This book was released on 2006 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Travel and Description written by and published by . This book was released on 188? with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fivefold Confinement Time Increase in the Madison Symmetric Torus Using Inductive Poloidal Current Drive written by and published by . This book was released on 1996 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current profile control is employed in the Madison Symmetric Torus reversed field pinch to reduce the magnetic fluctuations responsible for anomalous transport. An inductive poloidal electric field pulse is applied in the sense to flatten the parallel current profile, reducing the dynamo fluctuation amplitude required to sustain the equilibrium. This technique demonstrates a substantial reduction in fluctuation amplitude (as much as 50%), and improvement in energy confinement (from 1 ms to 5 ms); a record low fluctuation (0.8%) and record high temperature (615 eV) for this device were observed simultaneously during current drive experiments. Plasma beta increases by 50% and the Ohmic input power is three times lower. Particle confinement improves and plasma impurity contamination is reduced. The results of the transient current drive experiments provide motivation for continuing development of steady-state current profile control strategies for the reversed field pinch.