Return To: Session FTP2 - Engineering Design
Prev Page: (FTP2/13) Study on the Steady-state Tokamak Reactor with
Next Page: (FTP2/15) ARIES-AT: An Advanced Tokamak, Advanced Technology Fusion

(FTP2/14) Conceptual Design of Advanced Steady-state Tokamak Reactor (A-SSTR2) - Compact and Safety Oriented Commercial Power Plant

S. Nishio, K. Ushigusa, S. Ueda, et al.
 
Japan Atomic Energy Research Institute

Abstract.  Based on the last decade JAERI reactor design studies, the advanced commercial reactor concept (A-SSTR2) which meets both economical and environmental requirements has been proposed. The A-SSTR2 is a compact power reactor ( R_p = 6.2m, a_p = 1.5m, I_p = 12MA) with a high fusion power ( P_f = 4GW) and a net thermal efficiency of 51%. The machine configuration is simplified by eliminating a center solenoid (CS) coil system. SiC/SiC composite for blanket structure material, helium gas cooling with pressure of 10MPa and outlet temperature of 900^oC, and TiH₂ for bulk shield material are introduced. For the toroidal field (TF) coil, a high temperature ( T_C) superconducting wire made of bismuth with the maximum field of 23T and the critical current density of 1000A/mm² at a temperature of 20K is applied. In spite of the CS-less configuration, a computer simulation gives a satisfactory plasma equilibria, plasma initiation process and current ramp up scenario.

Read the full paper in PDF format.