Temporal and Spatial PFC Temperature Profiles in KSTAR 2010

Author

Bang, E.N. ; Hong, Seung Ho ; Kim, K.M. ; Kim, Hong Tak ; Kim, H.K. ; Lee, Kang Seol ; Jeon, Y.M. ; Bak, J.G. ; Yang, Hsiuhan Lexie ; Kim, W.C. ; Oh, Y.S. ; Chung, K.S.

Author_Institution

KSTAR Res. Center, Nat. Fusion Res. Inst., Daejeon, South Korea

Volume

40

Issue

6

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

1768

Lastpage

1772

Abstract

In and outboard plasma facing components (PFCs) of Korea Superconducting Tokamak Advanced Research (KSTAR) have been fully installed in 2010 for D-shaped diverted plasmas. Before the start of plasma operation, the PFCs were baked up to 200 by hot nitrogen gas circulation system to remove impurities including water. The surface temperature of the PFC tiles was monitored by 200 thermocouple sensors during the plasma operation [plasma shot or glow discharge cleaning (GDC)], and the temporal and spatial (poloidal) temperature profiles are obtained. Depending on the heat flux on each tile, the surface temperature shows time-dependent behavior. After 1-h morning He GDC, the temperature of the PFCs at the inboard side has reached to 40 . After an H-mode shot, the temperature of divertor tiles around the striking points was substantially increased. The time-averaged total heat flux after a few of L- and H-modes in 2010 was estimated to be approximately 0.010 .

Keywords

Tokamak devices; fusion reactor divertors; plasma temperature; plasma toroidal confinement; D-shaped diverted plasmas; H-mode shot; Korea superconducting tokamak advanced research 2010; L-mode; divertor tile temperature; hot nitrogen gas circulation system; inboard plasma facing component; outboard plasma facing component; plasma facing component tiles; plasma operation; spatial plasma facing component temperature profile; striking points; surface temperature; temperature 200 degC; temperature 40 degC; temporal plasma facing component temperature profile; thermocouple sensors; time 1 h; time-averaged total heat flux; time-dependent behavior; Discharges; Heating; Plasma temperature; Temperature measurement; Temperature sensors; H-mode; Heat flux; PFC baking; plasma facing component (PFC);

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2012.2190757

Filename

6177675