A recent report from the U.S. Department of Energy (DOE) emphasizes the urgent need for enhanced investment in fusion diagnostic technologies. This initiative is crucial for equipping both the DOE and Congress with the necessary data to expedite the development of commercial fusion power plants.
Insights from the DOE Workshop
The findings arise from the DOE's 2024 Basic Research Needs Workshop on Measurement Innovation, organized by the Office of Science's Fusion Energy Sciences (FES) program. Chaired by Luis Delgado-Aparicio of the Princeton Plasma Physics Laboratory (PPPL), with Sean Regan from the University of Rochester as co-chair, the workshop gathered experts from academia, private industry, and national labs.
Participants aimed to identify the most critical diagnostic and measurement technologies needed to sustain U.S. leadership in fusion energy and plasma science. This workshop aligns with the DOE's Fusion Science & Technology Roadmap, which outlines strategic actions extending to the mid-2030s to foster a competitive U.S. fusion energy sector.
"Innovations in measurement are pivotal for driving breakthroughs in plasma science and technology, particularly in fusion energy," stated Delgado-Aparicio. "Our report presents significant findings across seven core areas of plasma and fusion science that will influence both public and private sectors in meaningful ways."
Regan added, "The insights from this report highlight the indispensable role of diagnostics in advancing fusion energy science. By investing in cutting-edge measurement technologies, we can hasten our journey toward commercial fusion energy and fortify America's position in plasma science."
Focus Areas in Plasma Physics
Seventy researchers contributed to the report, examining seven pivotal plasma physics topics supported by the DOE's FES program:
- Low-temperature plasma
- High-energy-density plasma
- Plasma-material interaction
- Magnetic-confinement fusion (MCF) burning plasma
- Inertial-confinement fusion (ICF) burning plasma
- MCF-based fusion pilot power plants
- ICF-based fusion power plants
These focus areas encompass fundamental plasma science and the design of future fusion power facilities.
Enhancing Measurement Capabilities
The experts outlined strategies for bolstering the nation's plasma measurement capabilities. Priorities include developing diagnostics that can withstand the high radiation levels anticipated in future fusion plants and creating methods to capture rapid events during ICF experiments.
The report also advocates for leveraging artificial intelligence (AI) to refine the design of advanced measurement systems and emphasizes the importance of cultivating a skilled workforce to support diagnostic science. These advancements not only bolster fusion energy efforts but also enhance the broader plasma technology landscape, contributing to U.S. economic strength.
Key Recommendations for Fusion Advancement
The report details several essential recommendations:
- Accelerate Innovation: Enhance measurement technologies through validation of modeling codes, AI tools, and digital twins.
- Establish a National Network: Form a coordinated community for measurement innovation, similar to LaserNetUS.
- Form National Teams: Create national groups to efficiently develop new measurement concepts into operational diagnostics.
- Standardize Calibrations: Implement a systematic approach to calibrating diagnostic instruments.
- Transfer Knowledge: Share expertise from public institutions with private fusion companies.
- Invest in Workforce Development: Expand efforts to prepare the next generation of diagnostic scientists.
- Plan for Remote Operations: Address diagnostic needs for future remote fusion facility operations in upcoming workshops.
About the Report
The full report and executive summary are accessible online. The project was guided by Delgado-Aparicio and Regan, with contributions from various working groups and support from the Oak Ridge Institute for Science and Education.