Design and calibration experiment of a two-photon absorption laser induced fluorescence diagnostic system for the Huanliu-3 tokamak
A two-photon absorption laser induced fluorescence (TALIF) diagnostic system is designed for measuring the density of deuterium atoms in the scrape-off laser (SOL) region of the Huanliu-3 (HL-3) tokamak. The system employs laser pulses at 10 Hz with an energy of 10 mJ per pulse (pulse width <8 ns) at 205 nm. To enhance the fluorescence intensity, a semi-confocal lens was designed to achieve a relatively large solid angle for fluorescence collection. A calibration experiment was conducted, establishing the relationship between fluorescence intensity and atomic deuterium (D) density using krypton (Kr) atoms as a reference. Experimental verification of the whole TALIF system has been successfully performed in a plasma environment. The feasibility of the TALIF for the measurements of the neutral particles is discussed, and an experimental result in the HL-3 tokamak edge plasma region is shown in this paper.
Authors
- W. W. Xiao (ORCID: https://orcid.org/0000-0002-6782-2098)
- X.R. Duan (ORCID: https://orcid.org/0000-0002-3256-8341)
- George Tynan (ORCID: https://orcid.org/0000-0001-7461-4871)
- Z.B. Shi (ORCID: https://orcid.org/0000-0002-7640-9844)
- C. Y. Wang (ORCID: https://orcid.org/0009-0005-0363-5997)
- W. L. Zhong (ORCID: https://orcid.org/0000-0002-4867-0631)
- Guoliang Xiao (ORCID: https://orcid.org/0000-0001-7475-7098)
- Chengyuan Chen (ORCID: https://orcid.org/0000-0001-7745-2361)
- Jianan Yin (ORCID: https://orcid.org/0000-0002-1469-8759)
- Dezhen Wang (ORCID: https://orcid.org/0000-0003-0517-7318)
- Jiquan Li (ORCID: https://orcid.org/0000-0002-3628-8814)
- Dongye Zhao (ORCID: https://orcid.org/0000-0003-0387-4961)
- Z.C. Yang (ORCID: https://orcid.org/0000-0003-0043-7117)
- Baijie Feng (ORCID: https://orcid.org/0009-0002-1549-6080)
Institutions
- Zhejiang University of Science and Technology (CN)
- Dalian University of Technology (CN)
- University of California San Diego (US)
- Dalian University (CN)
- Southwestern Institute of Physics (CN)
- Zhejiang University of Technology (CN)
- Massachusetts Institute of Technology (US)
Publication Details
- Journal
- Review of Scientific Instruments
- Published
- 2025-11-01
- DOI
- https://doi.org/10.1063/5.0231991
- Citations
- 1
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 1.87