Development of a particle injection system for impurity transport study in KSTAR
H Y Lee1, Suk-Ho Hong2, Joohwan Hong1
1Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea and Fusion Plasma Transport Research Center, Daejeon 305-701, Republic of Korea.
Abstract:
A solid particle injection system is developed for KSTAR. The system has a compact size, compatibility with a strong magnetic field and high vacuum environment, and the capability to inject a small amount of solid particles with a narrow injection angle. The target flight-distance of 10 cm has been achieved with a particle loss rate of less than 10%. Solid impurity particles such as tungsten and carbon will be injected by this system at the midplane in KSTAR. The impurity transport feature will be studied with a soft X-ray array, a vacuum ultra-violet diagnostic, and Stand Alone Non-Corona code.
