High Time Resolved Electron Temperature Measurements By Using The Multi-Pass Thomson Scattering System In Gamma 10/Pdx
REVIEW OF SCIENTIFIC INSTRUMENTS(2016)
Abstract
High time resolved electron temperature measurements are useful for fluctuation study. A multi-pass Thomson scattering (MPTS) system is proposed for the improvement of both increasing the TS signal intensity and time resolution. The MPTS system in GAMMA 10/PDX has been constructed for enhancing the Thomson scattered signals for the improvement of measurement accuracy. The MPTS system has a polarization-based configuration with an image relaying system. We optimized the image relaying optics for improving the multi-pass laser confinement and obtaining the stable MPTS signals over ten passing TS signals. The integrated MPTS signals increased about five times larger than that in the single pass system. Finally, time dependent electron temperatures were obtained in MHz sampling. Published by AIP Publishing.
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Key words
electron temperature measurements,multi-pass
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