| Autor: |
Uzun-Kaymak IU; Engineering Physics, University of Wisconsin-Madison, Wisconsin 53706, USA. uzunkaymak@wisc.edu, Fonck RJ, McKee GR, Schoenbeck N, Smith D, Winz G, Yan Z |
| Jazyk: |
angličtina |
| Zdroj: |
The Review of scientific instruments [Rev Sci Instrum] 2010 Oct; Vol. 81 (10), pp. 10D714. |
| DOI: |
10.1063/1.3479114 |
| Abstrakt: |
A dual-channel high-efficiency, high-throughput custom spectroscopic system has been designed and implemented at DIII-D to measure localized ion thermal fluctuations associated with drift wave turbulence. A large-area prism-coupled transmission grating and high-throughput collection optics are employed to observe C VI emission centered near λ=529 nm. The diagnostic achieves 0.25 nm resolution over a 2.0 nm spectral band via eight discrete spectral channels. A turbulence-relevant time resolution of 1 μs is achieved using cooled high-speed avalanche photodiodes and ultralow-noise preamplifiers. The system sensitivity is designed to provide measurements of normalized ion temperature fluctuations on the order of δT(i)/T(i)≤1%. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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