High-Q thermally stable operation of a tokamak reactor
Thermally stable subignited operation of a tokamak reactor, sustained in operation by a feedback-controlled supplementary heating source, is discussed. One-dimensional (radial) thermal stability analyses of model transport equations, together with numerical results from a onedimensional (1-D) transport code, are used in studying the heating of deuterium-tritium (D-T) plasmas in the thermonuclear regime. The establishment of stability depends on a number of radially nonuniform nonlinear processes whose effect is analyzed. Nonuniform heat deposition resulting from plasma core supplementary heating is found to be a thermally more stable process than bulk heating. In the presence of impurity line radiation, however, core-heated temperature profiles may collapse, contracting inward from the limiter, the result of a radiationinduced instability. The effect of nonuniform transport coefficients is also discussed. Conditions are established for the realization of a subignited high-Q (Q approx. = 50) toroidal reactor plasma with appreciable output power (approx. = 2000 MW thermal).
- Research Organization:
- Institut de Recherche d'Hydro-Quebec, Varennes, Quebec, JOL2PO
- DOE Contract Number:
- AC02-78ET51013
- OSTI ID:
- 5843586
- Journal Information:
- IEEE Trans. Plasma Sci.; (United States), Vol. 11:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TOKAMAK TYPE REACTORS
OPERATION
STABILITY
DEUTERIUM
FEEDBACK
HEATING
NONLINEAR PROBLEMS
NUMERICAL ANALYSIS
PLASMA
RADIATIONS
THERMONUCLEAR REACTIONS
TRANSPORT THEORY
TRITIUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATHEMATICS
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
STABLE ISOTOPES
THERMONUCLEAR REACTORS
YEARS LIVING RADIOISOTOPES
700200* - Fusion Energy- Fusion Power Plant Technology