MANTIS: A real-time quantitative multispectral imaging system for fusion plasmas
| Autor: | W. A. J. Vijvers, A. Perek, I. G. J. Classen, B. Linehan, Cristian Galperti, J. R. Harrison, B. P. Duval, M.R. de Baar, T. Ravensbergen, Y. Andrebe, Tcv, Kevin Verhaegh, EUROfusion Mst Teams |
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| Přispěvatelé: | Science and Technology of Nuclear Fusion, Applied Physics and Science Education, Control Systems Technology |
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Tokamak Computer science Image quality Multispectral image Emphasis (telecommunications) Filter (signal processing) 01 natural sciences Synchronization 010305 fluids & plasmas law.invention power Narrowband law detachment 0103 physical sciences Electronic engineering tcv Reflection coefficient Instrumentation |
| Zdroj: | Review of Scientific Instruments, 90, 123514 Review of Scientific Instruments, 90(12):123514. American Institute of Physics Review of Scientific Instruments |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.5115569 |
| Popis: | This work presents a novel, real-time capable, 10-channel Multispectral Advanced Narrowband Tokamak Imaging System installed on the TCV tokamak, MANTIS. Software and hardware requirements are presented together with the complete system architecture. The image quality of the system is assessed with emphasis on effects resulting from the narrowband interference filters. Some filters are found to create internal reflection images that are correlated with the filters' reflection coefficient. This was measured for selected filters where significant absorption (up to 65% within similar to 70 nm of the filter center) was measured. The majority of this was attributed to the filter's design, and several filters' performance is compared. Tailored real-time algorithms exploiting the system's capabilities are presented together with benchmarks comparing polling and event based synchronization. The real-time performance is demonstrated with a density ramp discharge performed on TCV. The behavior of spectral lines' emission from different plasma species and their interpretation are qualitatively described. |
| Databáze: | OpenAIRE |
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