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

Volume

30

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

76

Lastpage

77

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2002.1003931

Filename

1003931