COLLOQUIUM: Smaller & Sooner: The ARC Pilot Design for Fusion Development
A new generation of superconducting (SC) tapes puts within reach loss-free magnetic fields with B > 20 Tesla on coil, doubling the field allowed by the present SC technology. The tapes can also provide demountable SC toroidal field coils. The ARC FNSF/Pilot design study explores how access to such technology would be a “game-changer” for small, robust tokamak reactors. The B3-4 dependence in critical fusion parameters allow both high energy gain and power density in much smaller devices, ~ 10x smaller than ITER in volume, while producing fusion energy ~500 MW and net electricity: features all highly attractive for the development of fusion energy. ARC operates far from all disruptive kink, pressure, density and shaping limits. In additions excellent access to robust steady-state (SS) scenarios is afforded by high-field, compact tokamaks. It is shown through simple 1-D analysis and the introduction of new dimensionless figures of merit that robust SS must arise from the combination of high-field and associated improvements in current drive at high B, particularly using integrated high-field Lower Hybrid launchers. A strong synergy exists between the high-B and demountable coils, allowing for simplified and improved fusion engineering choices: immersion liquid blankets, single-phase high temperature cooling, and a modular vacuum vessel, which becomes the only replacement item in the reactor, greatly reducing solid waste. The potential wins of high-field SC are so attractive that they should be pursued for magnetic fusion’s development.
The Princeton Plasma Physics Laboratory 2019-2020 Colloquium Committee is comprised of the following people. Please feel free to contact them by e-mail regarding any possible speakers or topics for future colloquia.
- Carol Ann Austin 609-243-2484
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