Collective Thomson scattering (CTS) is a powerful diagnostic technique with the capability to provide bulk ion temperature and ion composition of plasma with high temporal and spatial resolution. It has been developed in many fusion devices such as ASDEX, TEXTOR, W7-X, and ITER etc.
CTS is the elastic scattering process of electromagnetic waves by electrons with collective motions. For CTS...
Tungsten (W) is considered the optimal choice for plasma-facing components (PFCs) in fusion devices due to its high melting point, excellent mechanical properties, and minimal erosion rate. However, studies have shown that W undergoes extreme morphological change when it is bombarded by a high fluence of low-energy ions from helium (He) and deuterium (D) plasmas. To maintain W properties, its...
A high-speed vacuum ultraviolet imaging (VUVI) system for edge plasma studies is being developed on the Experimental Advanced Superconducting Tokamak (EAST). Its key optics is composed of an inverse type of Schwarzschild telescope made of a set of Mo/Si multilayer mirrors, a micro-channel plate (MCP) equipped with a P47 phosphor screen and a high-speed camera with CMOS sensors. In order to...
Compact torus (CT) injection, a critical technology for core fueling in magnetic confinement fusion, requires precise optimization of its acceleration dynamics to achieve efficient plasma delivery. This study presents a comprehensive investigation of CT acceleration in the newly developed KTX-CTI injector integrated into the Keda Torus eXperiment (KTX) reversed field pinch device. By employing...
Keda Torus eXperiment (KTX), a medium-sized reversed field pinch (RFP) device commissioned in 2015 at the University of Science and Technology of China, serves as a complementary facility to existing international RFP programs. Designed for plasma confinement optimization through enhanced wall conditions and high plasma currents up to 1 MA, KTX has undergone systematic upgrades in critical...
