Tokamak power systems studies at ANL
A number of advances in plasma physics and engineering promise to greatly improve the reactor prospects of tokamaks. The following features, in particular, are examined: (a) large aspect ratio (A approx. = 6), which may ease maintenance; (b) high beta (..beta.. greater than or equal to 0.20) without indentation, which brings the maximum toroidal field down to about 7 T; (c) low toroidal current (I approx. = 5MA), which reduces the cost of the current drive and equilibrium field system; and (d) steady state operation with current density control via fast and slow wave current drive. The key to high beta operation with low toroidal current lies in utilizing second stability regime equilibria with the required current distributions produced by an appropriate selection of wave driver frequencies and power spectra. The ray tracing and current drive calculation is self-consistent with the actual magnetic fields produced in the plasma. In addition to matching desirable high-beta equilibria, this method is capable of producing a large variety of new equilibria, many of which look attractive. The impurity control activities in TPSS have emphasized the self-pumping concept as applied to using the entire first wall or ''slot'' limiters. The blanket design effort has emphasized liquid metal and Flibe concepts. The reference concept is a liquid lithium/vanadium, self-cooled configuration. Overall, there exists a number of major design improvements which will substantially improve the attractiveness of tokamak reactors.
- Research Organization:
- Argonne National Lab., 9700 South Cass Avenue, Bldg. 205, Argonne, IL 60439
- OSTI ID:
- 6833284
- Report Number(s):
- CONF-860652-; TRN: 87-007563
- Journal Information:
- Fusion Technol.; (United States), Vol. 10:3; Conference: 7. topical meeting on the technology of fusion energy, Reno, NV, USA, 15 Jun 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TOKAMAK TYPE REACTORS
ENGINEERING
RESEARCH PROGRAMS
ANL
ASPECT RATIO
CALCULATION METHODS
CONTROL
COOLING
COST
CURRENT DENSITY
ELECTRIC CURRENTS
EQUILIBRIUM PLASMA
FLIBE
FREQUENCY SELECTION
HIGH-BETA PLASMA
IMPURITIES
LIQUID METALS
LITHIUM
MAGNETIC FIELDS
REACTOR MAINTENANCE
TOROIDAL CONFIGURATION
VANADIUM
ALKALI METALS
ANNULAR SPACE
CONFIGURATION
CURRENTS
ELEMENTS
FLUIDS
LIQUIDS
MAINTENANCE
METALS
MOLTEN SALTS
NATIONAL ORGANIZATIONS
PLASMA
SALTS
SPACE
THERMONUCLEAR REACTORS
TRANSITION ELEMENTS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
700200* - Fusion Energy- Fusion Power Plant Technology