Senior Scientist – ARC Plasma Instrumentation

About Commonwealth Fusion Systems:

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.

Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers and suppliers to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.

If that’s you and this role fits, we want to hear from you.

Commonwealth Fusion Systems is currently in the early stages of designing the ARC fusion power plant. The tokamak will share some attributes with SPARC but will also present many new challenges, especially in the thermal and radiological environment inside of the tokamak. The Senior Scientist, ARC Plasma Instrumentation will lead early efforts at scoping out necessary measurements in the plasma for plant control and the technologies that will be used to make these measurements.

The Senior Scientist will build off what has been done for SPARC, with a particular focus on determining the minimum necessary set of measurements and instruments for a power plant. In many cases, novel techniques may be required in order to operate in the thermal and radiological environment, so the scientist will work closely with R&D teams to determine necessary R&D for this instrumentation.

CFS is looking for someone with experience designing, building, and operating fusion diagnostics and with an interest in exploring a breadth of measurements and technologies for future power plants.

• Determine and continually refine the set of measurements necessary to operate the ARC tokamak, coordinating with the plasma control and plasma physics teams
• Evaluate potential techniques and technologies to make the measurements required in ARC, with a particular focus on techniques that will work robustly in the thermal and radiological environment in ARC
• Determine which techniques and technologies will require significant R&D and work with CFS R&D teams to scope out what projects are necessary to develop these technologies
• Develop early concepts, layouts, and requirements for proposed plasma instrumentation on ARC, including space requirements both inside and outside of the tokamak
• Work with the remote maintenance team to ideate and evaluate remote replacement strategies for plasma instrumentation
• Longer term, coordinate efforts of various engineering disciplines to design and analyze instrumentation concepts
• Coordinate efforts of external collaborators on ARC plasma instrumentation

• PhD in experimental plasma physics or a closely related field
• 5+ years experience (post degree) in plasma physics or fusion research
• Experience designing, building, and operating plasma instrumentation (diagnostics) in plasma experiments
• Experience working on a multi-disciplinary engineering project
• Experience performing independent research
• Knowledge of plasma instrumentation (diagnostics) on tokamaks or similar fusion experiments
• Knowledge of engineering sufficient to interact with multi-disciplinary engineering teams
• A desire to design commercial fusion products
• Ability to adapt to a rapidly changing environment
• Ability to work with collaborations from a variety of academic institutions

• Experience with Python

• Perform activities such as typing or sitting for extended periods of time
• Willingness to travel or work required nights/weekends/on-call regularly
• Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics

$110,000 - $185,000 a year

• Competitive compensation with equity
• 13 Company-wide Holidays
• Flexible vacation days
• 10 sick days
• Generous parental leave…