Electron temperature measurement by using Thomson scattering Diagnostic system in KSTAR
Abstract
To measure the electron temperature in KSTAR tokamak, we installed the Thomson scattering diagnostic system and measured electron temperature during KSTAR 4th campaign. The KSTAR Thomson scattering system was designed tangential type and we used 10Hz, 2J commercial Nd:YAG laser. The electron temperature was measured by using polychromator systems that was installed in the thermo-hydrostat machine to prevent the signal variation form the temperature changes. We did a Rayleigh scattering experiment for absolute calibration with Nitrogen gas and did a relative calibration using monochromator with tungsten light source. To measure the Thomson scattering signal we use the charge-to-digital conversion system and 3.5mm ×1.8mm optical fiber bundles. In this paper, we report the measurement result of electron temperature on KSTAR. And we will discuss the future works to increase the signal-to-noise ratio.
This work supported by the Ministry of Education, Science and Technology.- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2011
- Bibcode:
- 2011APS..DPPTP9138L