The design of two color interferometer system for the 3-dimensional analysis of plasma density evolution on KSTAR
| Autor: | Young-chul Ghim, J. W. Juhn, Y. S. Kim, K.C. Lee, H. M. Wi, S.W. Kim, Yong-Un Nam |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Physics Electron density business.industry Mechanical Engineering Laser 01 natural sciences Noise (electronics) 010305 fluids & plasmas law.invention Interferometry Optics Nuclear Energy and Engineering law KSTAR 0103 physical sciences Measuring instrument Astronomical interferometer General Materials Science business Beam (structure) Civil and Structural Engineering |
| Zdroj: | Fusion Engineering and Design. 113:87-91 |
| ISSN: | 0920-3796 |
| DOI: | 10.1016/j.fusengdes.2016.10.008 |
| Popis: | A 5-channel two color interferometer (TCI) system has been designed on KSTAR. TCI system is designed for tangential beam paths, which will combine with two existing interferometer systems of vertical and radial beam paths, so that it will provide 3-dimensional measurement of electron density evolution. TCI system uses wavelengths of 10.6 μm by a CO2 laser and 0.633 μm by a HeNe laser. The system compensates the vibrational noise by using two colors and avoids refraction by short wavelengths. The main purpose of the TCI is to generate routine measurement of the line integrated plasma density for the real time density control on KSTAR. The 5-channels will provide profile data for the density. Time resolution of the system is expected to be 500 kHz or higher in order to measure 3-dimensional density fluctuations for ELMs and other MHD activities including TAE modes. The system is planned to be working on KSTAR 2016 campaign with 1–2 channels. |
| Databáze: | OpenAIRE |
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