Reactor Technology Integration Group (ReTI)

The Reactor Technology Integration Group (ReTI) is part of the Department of Nuclear Engineering and Engineering Physics at the University of Wisconsin–Madison. Our core mission is to advance the cost competitiveness of nuclear energy—one of the primary determinants of its long-term viability—by developing rigorous, physics-based methods for reactor design, system integration, and economic evaluation. Through this work, we aim to support the sustained and expanded use of nuclear energy in service of energy security, reliability, and broader societal missions.

Our research is organized around three primary focus areas:

• The development and improvement of fission reactor technologies through multiphysics modeling and design, with emphasis on neutronics, thermal-hydraulic feedback, and system-level performance.
• The techno-economic analysis of fission and fusion energy systems and their integration with broader energy systems, with emphasis on cost of power, revenue generation, and pathways to economically viable nuclear energy.
• The development and evaluation of fusion energy technologies through physics-based modeling and conceptual design, with emphasis on blanket systems, tritium breeding and monitoring, and integration with experiments.

ReTI is actively seeking new graduate students and will also consider applicants at the postdoctoral level. If you are interested in learning more about the group or potential opportunities to join, please refer to the Q&A section.