SPARC Overview and Plans

The MIT Plasma Science and Fusion Center is partnering with Commonwealth Fusion Systems to design and build SPARC, a whose goal is to demonstrate net fusion plasma energy gain Q$_{\mathrm{p\thinspace }}=$P$_{\mathrm{fusion}}$/P$_{\mathrm{ext\thinspace }}$\textgreater 2 in a compact (R\textasciitilde 1.65 m) tokamak. The toroidal field coils will use REBCO high-temperature superconductors and R{\&}D progress towards achieving B$_{\mathrm{0}}=$12 tesla will be described. SPARC's detailed design and mission are discussed, including the possible addition of an advanced long-leg divertor. While funded by the private-sector, SPARC provides diverse opportunities for collaborations with the US and international fusion community. Work supported by Commonwealth Fusion Systems.