Title :
A compact quasi-axisymmetric stellarator reactor
Author_Institution :
Princeton Plasma Phys. Lab., NJ, USA
Abstract :
We report the progress made in assessing the potential of compact, quasi-axisymmetric stellarators as power-producing reactors. Using an aspect ratio A=4.5 configuration derived from NCSX and optimized with respect to the quasi-axisymmetry and MHD stability in the linear regime as an example, we show that a reactor of 1 GW(e) maybe realizable with a major radius ≤8 m. This is significantly smaller than the designs of stellarator reactors attempted before. We further show the design of modular coils and discuss the optimization of coil aspect ratios in order to accommodate the blanket for tritium breeding and radiation shielding for coil protection. In addition, we discuss the effects of coil aspect ratio on the peak magnetic field in the coils.
Keywords :
fusion reactor blankets; plasma instability; plasma magnetohydrodynamics; shielding; stellarators; 1 GW; A=4.5; MHD stability; NCSX; aspect ratio; coil protection; compact quasiaxisymmetric stellarator reactor; linear regime; modular coils; peak magnetic field; power-producing reactors; radiation shielding; tritium breeding blanket; Coils; Constraint optimization; Design optimization; Inductors; Magnetic shielding; Magnetohydrodynamics; Plasma confinement; Plasma properties; Plasma stability; Toroidal magnetic fields;
Conference_Titel :
Fusion Engineering, 2003. 20th IEEE/NPSS Symposium on
Print_ISBN :
0-7803-7908-X
DOI :
10.1109/FUSION.2003.1426646
