Measurements of parallel and poloidal velocity by using Visco-Mach probe in Hanbit mirror device

Summary form only given, as follows. To understand the edge plasma fluctuation in the central cell region of Hanbit mirror device, the Visco-Mach probe is used to measure the parallel and poloidal velocity along the field. The Visco-Mach probe was attached on the fast injection system, which can scan the central cell region of Hanbit device in the radial direction. Also to calculate the driving force of plasma flow, Er/spl times/B, the emissive probe is used to measure the plasma potential. The experimental data from the Visco-Mach and emissive probe will be presented and driving force of the plasma flow will be discussed along with the velocity of Mach probe theory.