Collection optics of JT-60SA edge Thomson scattering diagnostic
The mission of the JT-60SA project is to complement ITER's capabilities by addressing the fundamental physics and engineering challenges necessary to develop a practical and reliable fusion power plant. Diagnostics play a pivotal role in achieving this mission, especially the Thomson Scattering (TS) diagnostic systems developed by a collaborative Japan-EU team. The edge Thomson scattering of JT-60SA is tailored to measure the low field side outer region of the plasma, in particular, to resolve the electron temperature Te and density ne. The collection optics of the edge TS system have a critical role in meeting the required field of view and spatial resolution despite the limited space. This work presents a comprehensive optomechanical design of the optics assembly, whose main features are telecentricity and compactness, highlighting its capabilities. The tests undertaken to verify its performance: focal plane identification, thermal cycle, and magnification, are described.
Authors
- Y. Ohtani (ORCID: https://orcid.org/0000-0003-3646-5427)
- L. Giudicotti (ORCID: https://orcid.org/0000-0002-2115-7491)
- Giuseppe Crescenzio
- S. Soare (ORCID: https://orcid.org/0000-0002-3803-2724)
- F. D’Isa (ORCID: https://orcid.org/0000-0002-2486-5602)
- M. Girardini
- R. Pasqualotto (ORCID: https://orcid.org/0000-0002-3684-7559)
- A. Grossi (ORCID: https://orcid.org/0000-0002-3455-8753)
- Moe Akimitsu (ORCID: https://orcid.org/0000-0002-7027-5435)
- Alessandra Slemer (ORCID: https://orcid.org/0000-0001-7762-280X)
- H. Tojo (ORCID: https://orcid.org/0000-0003-2045-2699)
- A. Fassina (ORCID: https://orcid.org/0000-0003-4139-423X)
- E. Mazzarolo
Institutions
- National Agency for New Technologies, Energy and Sustainable Economic Development (IT)
- Lucian Blaga University of Sibiu (RO)
- University of Padua (IT)
- National Institutes for Quantum Science and Technology (JP)
- Institutul de Fizică Atomică (RO)
- Institute for the Science and Technology of Plasmas (IT)
Publication Details
- Journal
- Review of Scientific Instruments
- Published
- 2024-08-01
- DOI
- https://doi.org/10.1063/5.0219396
- Citations
- 2
- Primary Topic
- High-pressure geophysics and materials
- Type
- article
- Field-Weighted Citation Impact
- 1.07
Funders
- EUROfusion