Numerical imaging of edge plasma characteristics in the high-recycling scrape-off layer of the KSTAR tokamak

Author

Ko, Jin-Seok ; Im, Ki-Hak ; Kim, Deok-Kyu ; Hong, Sang Hee

Author_Institution

Dept. of Nucl. Eng., Seoul Nat. Univ., South Korea

Volume

30

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

64

Lastpage

65

Abstract

Edge plasma characteristics of a high-recycling divertor operation regime of the Korea Superconducting Tokamak Advanced Research (KSTAR) tokamak are presented. The results were obtained by numerical simulation using a two-dimensional (2-D) two-fluid edge plasma transport code coupled with a 2-D Monte Carlo recycling neutral transport code. The simulations successfully display the two major characteristics of a scrapeoff layer in a high-recycling regime: a parallel temperature gradient and parallel pressure conservation. The results of the simulation can be utilized to provide guidelines for future operation of the KSTAR tokamak regarding the relation between upstream plasma properties and divertor operation regimes

Keywords

Monte Carlo methods; Tokamak devices; plasma boundary layers; plasma simulation; plasma toroidal confinement; plasma transport processes; 2-D Monte Carlo recycling neutral transport code; KSTAR Tokamak; Korea Superconducting Tokamak Advanced Research tokamak; Monte Carlo neutral transport calculations; divertor operation regimes; edge plasma characteristics; high-recycling divertor operation regime; high-recycling regime; high-recycling scrape-off layer; numerical imaging; numerical simulation; parallel pressure conservation; parallel temperature gradient; scrape off layer; two-dimensional two-fluid edge plasma transport code; upstream plasma properties; Monte Carlo methods; Numerical simulation; Plasma displays; Plasma properties; Plasma simulation; Plasma temperature; Plasma transport processes; Superconducting epitaxial layers; Tokamaks; Two dimensional displays;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2002.1003925

Filename

1003925