Title :
Impurity transport studies in tokamak edge plasmas using visible imaging
Author :
Gangadhara, Sanjay ; LaBombard, Brian
Author_Institution :
Plasma Sci. & Fusion Center, MIT, Cambridge, MA, USA
fDate :
2/1/2002 12:00:00 AM
Abstract :
Understanding impurity transport in the scrape-off layer (SOL) of tokamak plasmas is a necessary piece of developing the physics basis for designing next-generation reactors. A system for inferring impurity transport parallel and perpendicular to local magnetic field lines has been developed on Alcator C-Mod using gas-injection "plumes." In this system, impurity gas is injected at a fixed position in the SOL via a reciprocating fast-scanning probe, and the resulting emission is imaged. In this paper, visible light emission patterns from C+1 and C +2 ions are presented
Keywords :
Tokamak devices; plasma diagnostics; plasma impurities; plasma transport processes; Alcator C-Mod; C; C+; C2+; Tokamak edge plasmas; Tokamak scrape-off layer; gas-injection plumes; impurity gas injection; impurity transport; local magnetic field lines; next-generation reactors; plasma transport coefficients; reciprocating fast-scanning probe; visible imaging; visible light emission patterns; Charge-coupled image sensors; Impurities; Inductors; Optical imaging; Plasma confinement; Plasma diagnostics; Plasma materials processing; Plasma transport processes; Probes; Tokamaks;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2002.1003931
