Erosion and materials deposition in limiter of experimental advanced superconducting tokmak

Hongyi Yan; Xianzu Gong; Jiangang Li; W. R. Wampler; Richard Pitts

doi:10.3969/j.issn.1672-7126.2012.04.02

Erosion and materials deposition in limiter of experimental advanced superconducting tokmak

Hongyi Yan
, Xianzu Gong
, Jiangang Li
, W. R. Wampler
, Richard Pitts

School of Electrical Engineering

CAS - Institute of Plasma Physics
Sandia National Laboratories, California
ITER

Research output: Contribution to journal › Article › peer-review

Abstract

The deposition and erosion of the plasma facing materials (PFMs)-the graphite with surface modified by SiC doping-in the limiter of the experimental advanced superconducting tokmak (EAST) was experimentally studied by Rutherford back scattering (RBS) for the purposes of reducing the contamination of the plasma at extremely high temperature, and increasing the safety of EAST. In the simulation experiment, 4 marked tiles covered with 1 μm thick carbon films were installed in the limiter. The preliminary results show that the averaged erosion rate was higher than 0.0278 nm/s, after the plasma exposure up to 36,000 s, indicating the complete removal of the carbon film. The negative impacts and possible solution of the erosion and re-deposition of the PFMs were also tentatively discussed.

Original language	English
Pages (from-to)	274-278
Number of pages	5
Journal	Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology
Volume	32
Issue number	4
DOIs	https://doi.org/10.3969/j.issn.1672-7126.2012.04.02
State	Published - Apr 2012

Keywords

EAST
Erosion
Limiter
PFM

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10.3969/j.issn.1672-7126.2012.04.02

Cite this

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title = "Erosion and materials deposition in limiter of experimental advanced superconducting tokmak",

abstract = "The deposition and erosion of the plasma facing materials (PFMs)-the graphite with surface modified by SiC doping-in the limiter of the experimental advanced superconducting tokmak (EAST) was experimentally studied by Rutherford back scattering (RBS) for the purposes of reducing the contamination of the plasma at extremely high temperature, and increasing the safety of EAST. In the simulation experiment, 4 marked tiles covered with 1 μm thick carbon films were installed in the limiter. The preliminary results show that the averaged erosion rate was higher than 0.0278 nm/s, after the plasma exposure up to 36,000 s, indicating the complete removal of the carbon film. The negative impacts and possible solution of the erosion and re-deposition of the PFMs were also tentatively discussed.",

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author = "Hongyi Yan and Xianzu Gong and Jiangang Li and Wampler, \{W. R.\} and Richard Pitts",

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TY - JOUR

T1 - Erosion and materials deposition in limiter of experimental advanced superconducting tokmak

AU - Yan, Hongyi

AU - Gong, Xianzu

AU - Li, Jiangang

AU - Wampler, W. R.

AU - Pitts, Richard

PY - 2012/4

Y1 - 2012/4

N2 - The deposition and erosion of the plasma facing materials (PFMs)-the graphite with surface modified by SiC doping-in the limiter of the experimental advanced superconducting tokmak (EAST) was experimentally studied by Rutherford back scattering (RBS) for the purposes of reducing the contamination of the plasma at extremely high temperature, and increasing the safety of EAST. In the simulation experiment, 4 marked tiles covered with 1 μm thick carbon films were installed in the limiter. The preliminary results show that the averaged erosion rate was higher than 0.0278 nm/s, after the plasma exposure up to 36,000 s, indicating the complete removal of the carbon film. The negative impacts and possible solution of the erosion and re-deposition of the PFMs were also tentatively discussed.

AB - The deposition and erosion of the plasma facing materials (PFMs)-the graphite with surface modified by SiC doping-in the limiter of the experimental advanced superconducting tokmak (EAST) was experimentally studied by Rutherford back scattering (RBS) for the purposes of reducing the contamination of the plasma at extremely high temperature, and increasing the safety of EAST. In the simulation experiment, 4 marked tiles covered with 1 μm thick carbon films were installed in the limiter. The preliminary results show that the averaged erosion rate was higher than 0.0278 nm/s, after the plasma exposure up to 36,000 s, indicating the complete removal of the carbon film. The negative impacts and possible solution of the erosion and re-deposition of the PFMs were also tentatively discussed.

KW - EAST

KW - Erosion

KW - Limiter

KW - PFM

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DO - 10.3969/j.issn.1672-7126.2012.04.02

M3 - 文章

AN - SCOPUS:84862329256

SN - 1672-7126

VL - 32

SP - 274

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JO - Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology

JF - Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology

IS - 4

ER -

Erosion and materials deposition in limiter of experimental advanced superconducting tokmak

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Keywords

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