Torsatron/stellarator research at the University of Wisconsin-Madison, 1983

Technical Report · Sat Jan 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/6386042· OSTI ID:6386042

This report details experimental activities of the University of Wisconsin-Madison Torsatron/Stellarator Laboratory during the period 1978 through 1983. Experiments on the Proto-Cleo Stellarator have demonstrated the effectiveness of ion-cyclotron resonance heating with ion temperatures increased to 150 eV. Tangential injection of gun-produced plasmas showed a reduction in convective cell structures with an increase in confinement time of a factor of two. Pfirsch-Schluter currents were measured to be in excellent agreement with neoclassical predictions. Studies on the Proto-Cleo Torsatron identified the presence of drift waves and rippling modes and identified a runaway instability under certain operating conditions. Heat pulse propagation measurement were used to obtain transport coefficients. Electron-cyclotron resonance heating was observed with good agreement to a stochastic heating model related to local field gradients. During this period, the Interchangeable Module Stellarator (IMS) was designed and fabricated. IMS is the first modular stellarator to be built based upon the modular coil concept of Rehker and Wobig. Details of the design and construction are presented. Initial operation of IMS demonstrated well formed vacuum magnetic surfaces with no evidence of significant isolation. Experience gained in the design of IMS was utilized in a modular stellarator reactor study. UWTOR-M, to demonstrate the feasibility of stellarator reactors based upon this concept.

• Research Organization: Wisconsin Univ., Madison (USA). Torsatron/Stellarator Lab.
• DOE Contract Number: AC02-78ET53082
• OSTI ID: 6386042
• Report Number(s): DOE/ET/53082-1; ON: DE89013225
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700200* -- Fusion Energy-- Fusion Power Plant Technology
ALFVEN WAVES
CLOSED PLASMA DEVICES
DESIGN
DIVERTORS
DOCUMENT TYPES
ECR HEATING
HEATING
HIGH-FREQUENCY HEATING
HYDROMAGNETIC WAVES
ICR HEATING
INSTABILITY
MAGNETS
PLASMA HEATING
PLASMA INSTABILITY
PROGRESS REPORT
RESEARCH PROGRAMS
STELLARATORS
THERMONUCLEAR DEVICES
TORSATRON STELLARATOR