Study of Optimum Conditions for the V-Shaped Target of a Gas Divertor

Experimental simulation of a V-shaped target for a gas divertor via detached plasma formation is presented using a linear divertor plasma simulator, TPD-Sheet IV. Three geometries of the opposite plate on the V-shaped target were investigated with variation of the contact gas flow rate. The ionization and recombination events are discussed for each target configuration using the collisional-radiative (CR) model. The results expect that a gas divertor with a V-shaped target effectively enhances plasma recycling and detachment.