Reduced effective ionic charge and enhanced plasma performance in the HT-7 tokamak

Z. W. Wu; J. Li; B. N. Wan; X. D. Zhang; X. Gao; J. Zhao

doi:10.1016/j.jnucmat.2007.01.258

Reduced effective ionic charge and enhanced plasma performance in the HT-7 tokamak

Z. W. Wu
, J. Li
, B. N. Wan
, X. D. Zhang
, X. Gao
, J. Zhao

School of Electrical Engineering

CAS - Institute of Plasma Physics

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

5 Scopus citations

Abstract

Many technical improvements were achieved recently in the HT-7 superconducting tokamak, such as ICRF boronization, new water cooling graphite limiters which is instead of molybdenum limiter, and application of ferritic steel for reducing the magnetic ripple, and so on. The global impurity content and impurity components were measured and studied by using of spectroscopy diagnostics in the HT-7 tokamak. Experimental results of the effective ionic charge Z_eff and impurity behaviors before and after technical improvements mentioned above are compared in this paper. It is observed that the integrated plasma performance is enhanced while the global impurity content and Z_eff drops with these technical improvements. Steady state plasma with higher performance and 5-min long pulse plasma were obtained.

Original language	English
Pages (from-to)	1380-1385
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	363-365
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2007.01.258
State	Published - 15 Jun 2007

Keywords

Boronization
Ferritic steel
Graphite limiter
Impurity
Spectroscopy

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10.1016/j.jnucmat.2007.01.258

Cite this

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title = "Reduced effective ionic charge and enhanced plasma performance in the HT-7 tokamak",

abstract = "Many technical improvements were achieved recently in the HT-7 superconducting tokamak, such as ICRF boronization, new water cooling graphite limiters which is instead of molybdenum limiter, and application of ferritic steel for reducing the magnetic ripple, and so on. The global impurity content and impurity components were measured and studied by using of spectroscopy diagnostics in the HT-7 tokamak. Experimental results of the effective ionic charge Zeff and impurity behaviors before and after technical improvements mentioned above are compared in this paper. It is observed that the integrated plasma performance is enhanced while the global impurity content and Zeff drops with these technical improvements. Steady state plasma with higher performance and 5-min long pulse plasma were obtained.",

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TY - JOUR

T1 - Reduced effective ionic charge and enhanced plasma performance in the HT-7 tokamak

AU - Wu, Z. W.

AU - Li, J.

AU - Wan, B. N.

AU - Zhang, X. D.

AU - Gao, X.

AU - Zhao, J.

PY - 2007/6/15

Y1 - 2007/6/15

N2 - Many technical improvements were achieved recently in the HT-7 superconducting tokamak, such as ICRF boronization, new water cooling graphite limiters which is instead of molybdenum limiter, and application of ferritic steel for reducing the magnetic ripple, and so on. The global impurity content and impurity components were measured and studied by using of spectroscopy diagnostics in the HT-7 tokamak. Experimental results of the effective ionic charge Zeff and impurity behaviors before and after technical improvements mentioned above are compared in this paper. It is observed that the integrated plasma performance is enhanced while the global impurity content and Zeff drops with these technical improvements. Steady state plasma with higher performance and 5-min long pulse plasma were obtained.

AB - Many technical improvements were achieved recently in the HT-7 superconducting tokamak, such as ICRF boronization, new water cooling graphite limiters which is instead of molybdenum limiter, and application of ferritic steel for reducing the magnetic ripple, and so on. The global impurity content and impurity components were measured and studied by using of spectroscopy diagnostics in the HT-7 tokamak. Experimental results of the effective ionic charge Zeff and impurity behaviors before and after technical improvements mentioned above are compared in this paper. It is observed that the integrated plasma performance is enhanced while the global impurity content and Zeff drops with these technical improvements. Steady state plasma with higher performance and 5-min long pulse plasma were obtained.

KW - Boronization

KW - Ferritic steel

KW - Graphite limiter

KW - Impurity

KW - Spectroscopy

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DO - 10.1016/j.jnucmat.2007.01.258

M3 - 文章

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SN - 0022-3115

VL - 363-365

SP - 1380

EP - 1385

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

Reduced effective ionic charge and enhanced plasma performance in the HT-7 tokamak

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Keywords

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