A laser-based diagnostic for in situ monitoring of fuel retention in ITER
This paper addresses the critical challenge of tritium inventory control in ITER and future fusion devices, emphasizing the necessity for precise measurement and spatial distribution of tritium within the vacuum vessel. The proposed laser-based T-monitor diagnostic system from Forschungszentrum Jülich employs Laser-Induced Desorption (LID) combined with Residual Gas Analysis (RGA) to measure hydrogen isotope concentrations on the inner divertor tiles. Key design elements include high-power laser integration, advanced optical systems, and a Fast Scanning Mirror Unit for accurate laser spot positioning. The diagnostic aims to measure in situ tritium retention, improving operational safety and efficiency in nuclear fusion environments.
Authors
- Krzysztof Mlynczak
- A. Terra (ORCID: https://orcid.org/0000-0003-0638-6103)
- M. Schrader
- Arnd Reutlinger
- M. Zlobinski
- H.T. Lambertz
- Sebastian Friese
- G. Sergienko (ORCID: https://orcid.org/0000-0002-1539-4909)
- Xi Zhuo Jiang (ORCID: https://orcid.org/0000-0002-1317-964X)
- J. Aßmann
- Ilia Ivashov
- Yu. Krasikov (ORCID: https://orcid.org/0000-0002-4387-3149)
- Ph. Mertens (ORCID: https://orcid.org/0000-0002-5010-5316)
- S. Brezinsek (ORCID: https://orcid.org/0000-0002-7213-3326)
- Ch. Linsmeier
- A. Huber (ORCID: https://orcid.org/0000-0002-3558-8129)
- Dirk Kampf
- Dario Castano
- P. Andrew
- K. Rasinska
- D. Van Staden
- A. De Schepper
Institutions
- ITER (FR)
- University of Liège (BE)
- Forschungszentrum Jülich (DE)
- Optics Technology (United States) (US)
Publication Details
- Journal
- Fusion Engineering and Design
- Published
- 2025-07-01
- DOI
- https://doi.org/10.1016/j.fusengdes.2025.115298
- Citations
- 1
- Primary Topic
- Fusion materials and technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.52
Funders
- Instituto Tecnológico y de Energías Renovables
- Forschungszentrum Jülich