IAEA fusion portal

Overview

The International Atomic Energy Agency (IAEA) Fusion Portal is a comprehensive, open-access web platform that serves as a primary information gateway for the international fusion energy research and development community. Managed by the IAEA's Physics Section, the portal's mission is to foster scientific progress and collaboration by providing centralized access to a wide range of curated data, publications, and resources. It plays a critical role in the dissemination of knowledge, standardization of data, and tracking of global progress in a field characterized by large-scale, multinational projects. For researchers, engineers, and institutional investors, the portal provides authoritative information on experimental devices, fundamental plasma physics data, and the proceedings of major international conferences, thereby supporting the entire lifecycle of fusion research from theoretical modeling to experimental validation and engineering design.

Function and Structure

The IAEA Fusion Portal is not a physical experiment but a digital infrastructure. Its function is to aggregate, curate, and disseminate information through a structured, web-based interface. The portal is built upon a modular architecture, integrating several distinct but interconnected databases and services.

Key structural components include:

Fusion Device Information System (FusDIS): A global database containing technical specifications, operational parameters, and key personnel for over 130 fusion experimental devices worldwide, from small university tokamaks to large-scale facilities like ITER. FusDIS is the successor to the compendium published periodically in the Nuclear Fusion journal and is now updated dynamically.
Atomic and Molecular (A+M) Data Unit: This section provides access to critically evaluated numerical databases essential for plasma modeling and diagnostics. It includes data on collision processes (electron-impact excitation, ionization) and plasma-material interaction (sputtering yields, reflection coefficients), which are fundamental inputs for simulating plasma behavior and interpreting experimental results.
IAEA Fusion Energy Conference (FEC) Series Archive: The portal hosts a complete digital archive of the proceedings from the biennial IAEA FEC, the most prominent international conference in the fusion field. This repository contains thousands of peer-reviewed papers dating back to the first conference in 1961, offering a historical record of the field's evolution.
Publications and Documents: The portal serves as a repository for IAEA-published materials related to fusion, including the World Survey of Fusion Devices, technical documents (TECDOCs), and reports from coordinated research projects (CRPs) and technical meetings.
Educational Resources: It provides access to materials from IAEA workshops, summer schools, and e-learning modules aimed at students and early-career scientists, contributing to workforce development in the fusion sector.

The portal's backend relies on relational databases and a content management system, with a user-facing front end designed for querying and data retrieval. The IAEA's role ensures data quality through expert review and a standardized curation process.

Historical Development

The IAEA's involvement in fostering international cooperation in fusion research dates back to its inception in 1957. The agency's "Atoms for Peace" mandate naturally extended to controlled thermonuclear fusion. A pivotal early initiative was the establishment of the Nuclear Fusion journal in 1960 and the first IAEA Conference on Plasma Physics and Controlled Nuclear Fusion Research (now the FEC) in 1961.

Throughout the 20th century, the IAEA's information dissemination activities were primarily based on print publications, such as the periodic World Survey of Fusion Devices and the printed FEC proceedings. The need for a more dynamic and accessible platform became apparent with the rise of the internet and the increasing volume and complexity of fusion data.

The modern IAEA Fusion Portal was officially launched in 2006. It was designed to consolidate the agency's various digital and print resources into a single, integrated online hub. The development involved digitizing decades of conference proceedings and migrating static datasets, like the fusion device survey, into interactive, searchable databases like FusDIS. This transition from print to a dynamic digital platform marked a significant step in the IAEA's mission to support the global fusion community.

Since its launch, the portal has undergone continuous development. The A+M Data Unit has expanded its databases, and new features, such as e-learning modules and integrated search functions, have been added to enhance user experience and broaden the scope of available information.

Current Status

As of 2026, the IAEA Fusion Portal is a mature and widely utilized resource within the fusion community. It is maintained and updated by the IAEA Physics Section in Vienna, with input from a global network of experts and data providers. The portal's services are provided free of charge to all users.

FusDIS currently contains detailed information on over 130 active, decommissioned, and planned fusion devices. Its data is regularly cited in scientific publications and policy reports as an authoritative source on the global landscape of fusion research facilities. The FEC archive is complete, offering full-text access to papers from all 30 conferences held to date, a critical resource for historical research and literature reviews.

The A+M Data Unit continues to run Coordinated Research Projects to generate and evaluate new data sets required by the community, particularly for modeling the behavior of high-Z materials like tungsten, which is used in the divertor of modern tokamaks. The portal's usage statistics indicate a broad international user base, reflecting its status as a truly global resource. The IAEA also actively promotes the portal through workshops and training events, ensuring that new generations of researchers are aware of and can effectively use its tools.

Key Features and Datasets

The portal's value lies in its specific, curated datasets and tools, which are considered standards in the field.

World Survey of Fusion Devices: Published periodically and integrated into FusDIS, this resource provides a comprehensive snapshot of the world's fusion research capabilities. The 2022 edition, for example, provides a detailed census of devices and their primary missions.
IAEA Nuclear Data Services (NDS): While a distinct section of the IAEA, the Fusion Portal provides curated links and access to the NDS, which houses nuclear reaction data crucial for tritium breeding ratio calculations, neutronics modeling, and materials activation analysis. This includes libraries like FENDL (Fusion Evaluated Nuclear Data Library).
Coordinated Research Projects (CRPs): The portal is the main dissemination point for the outcomes of IAEA CRPs. These projects bring together laboratories from multiple member states to collaborate on specific research problems, such as plasma-wall interaction or the development of advanced diagnostic techniques. The results, including data and summary reports, are made publicly available through the portal.
Meetings and Workshops: The portal serves as the organizational hub for IAEA-sponsored technical meetings, workshops, and schools. It hosts announcements, agendas, and presentation materials, facilitating participation and knowledge sharing even for those unable to attend in person.

Open Challenges

Despite its success, the IAEA Fusion Portal faces several ongoing challenges.

Data Curation and Timeliness: The value of databases like FusDIS depends on the timely and accurate submission of data from institutions worldwide. Ensuring that information on device upgrades, operational status, and new projects is kept current requires continuous effort and proactive engagement with the community. The rise of private fusion companies, some of which may be less transparent with their machine parameters, presents a new challenge for a comprehensive global survey.
Interoperability and FAIR Principles: A major challenge is enhancing the interoperability of its databases with other data platforms and ensuring all data adheres to the FAIR (Findable, Accessible, Interoperable, Reusable) principles. This involves developing standardized data formats and APIs (Application Programming Interfaces) to allow for machine-to-machine data exchange and integration into modern computational workflows.
Big Data Management: As fusion experiments generate increasingly large datasets—petabytes in the case of facilities like ITER—the portal's role may need to evolve. While it is not intended to be a repository for raw experimental data, it faces the challenge of how to best link to or index these large datasets and provide tools for data discovery and analysis.
Resource Constraints: As a publicly funded international organization, the IAEA operates with finite resources. Expanding the portal's capabilities, digitizing older materials, and maintaining a high level of data curation requires sustained funding and dedicated personnel.

Outlook

The 5-15 year trajectory for the IAEA Fusion Portal will likely focus on addressing its current challenges and adapting to the evolving needs of the fusion community. A key priority will be the implementation of modern data science practices. This includes developing APIs for programmatic access to its databases, which would enable researchers to integrate IAEA data directly into their analysis scripts and modeling codes. Enhanced visualization tools and more sophisticated search functionalities are also expected developments.

As the fusion landscape diversifies with a growing number of private fusion companies, the portal's role as a neutral, authoritative aggregator of information will become even more important. The IAEA may need to develop new frameworks for engaging with the private sector to ensure that FusDIS remains a comprehensive global registry. Furthermore, with the operational start of ITER and other next-generation devices, the portal will be essential for disseminating their scientific and technical results to the broader community.

The educational component of the portal is also expected to grow, with an expansion of e-learning courses and virtual training events to support the development of the skilled workforce required to build and operate future fusion power plants. The portal will likely remain the central, indispensable information resource for the global pursuit of fusion energy.

References

The IAEA Fusion Portal – a comprehensive resource for the fusion community — Nuclear Fusion, Volume 59, Number 7 (2019)
IAEA Activities in Fusion Data Development and Exchange — Fusion Science and Technology, Volume 66, Issue 2 (2014)
Fusion Portal — International Atomic Energy Agency
Fusion Device Information System (FusDIS) — International Atomic Energy Agency
The World Survey of Fusion Devices 2022 — Nuclear Fusion, Volume 62, Number 8 (2022)
IAEA Coordinated Research Activities on Atomic, Molecular and Plasma-Material Interaction Data for Fusion — Atoms, Volume 8, Issue 3 (2020)
FAIR principles for fusion data — Fusion Engineering and Design, Volume 188 (2023)
IAEA Support to Fusion R&D for Peaceful Use of Fusion Energy — IAEA (2020)