Advanced performance fusion engineering device based on low safety factor and current drive (FED-A)
The FED-A study aims to quantify the potential improvement in cost-effectiveness of the Fusion Engineering Device (FED) by assuming low safety factor q at the plasma edge and noninductive current drive. The FED-A performance objectives (ignition, neutron wall load, and power-reactor-like operation) are set to be equal to or better than those of the FED Baseline. The results show that assuming magnetohydrodynamic (MHD) q/sub psi/ (edge) to be 1.8 permits reduction in device size and plasma current and leads to a 30% reduction in direct cost. A closely fitted, 1.5-cm-thick, continuous water-cooled shell made of the copper alloy AMAX-MZC (0.6 Cr, 0.1 Zr, 0.03 Mg) is proposed to provide a 0.5-s time constant, to help avoid disruption when q/sub psi/ passes near 2, and to mitigate disruption impact. The lower hybrid wave current drive in a cyclic density operation is proposed to achieve a quasi-steady-state operation permitting a design with low toroidal loop voltage and a 1000-s burn time.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Princeton Univ., NJ (USA). Plasma Physics Lab.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6393085
- Report Number(s):
- CONF-831203-177; ON: DE85000947
- Resource Relation:
- Conference: 10. symposium on fusion engineering, Philadelphia, PA, USA, 5 Dec 1983; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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