Skip to content

Alcator C-Mod: Plasma Physics Basis

Alcator C-Mod is a compact, high-magnetic field tokamak at MIT that has provided much of the research basis for SPARC. As a result of DOE funded research on Alcator C-Mod the team developed the science that retired key risk in the path toward commercial fusion. The compact configuration enabled our team to rapidly incorporate innovations and provide time sensitive answers to questions surrounding fusion science and technology. In 2016, C-Mod broke its own record for plasma pressure in a magnetically confined device, an important measurement for fusion.


HTS Magnets: Enabling Technology

A new high temperature superconductor (HTS) recently reached industrial maturity: Rare Earth Barium Copper Oxide (REBCO). CFS is using HTS and building first-of-its-kind high-field large-bore superconducting magnets. HTS magnets will allow for smaller, faster, and less expensive tokamaks using the science developed on Alcator C-Mod and other tokamaks.


SPARC: Fusion Energy Demonstration

Commonwealth Fusion Systems is collaborating with MIT’s Plasma Science and Fusion Center to build SPARC, the world’s first fusion device that produces plasmas which generate more energy than they consume, becoming the first net-energy fusion machine. SPARC will pave the way for carbon-free, safe, limitless, fusion power. This compact, high-field tokamak will be built with HTS magnets, allowing for a smaller device than previous magnet technology. SPARC is an important step to accelerate the development of commercial fusion energy.


ARC: Commercialization

Following the SPARC demonstration, CFS will construct the world's first fusion power plant, ARC. ARC will produce fusion power onto the grid and demonstrate the science and technology required for economically competitive, mass production of fusion power. It will pave the way for fusion systems that will provide carbon-free, safe, limitless power for the world.