Improved plasma performance in TEXTOR with silicon coated surfaces

J. Winter; H. G. Esser; G. L. Jackson; L. Könen; A. Messiaen; J. Ongena; V. Philipps; A. Pospiesczcyk; U. Samm; B. Schweer; B. Unterberg

doi:10.1103/PhysRevLett.71.1549

Improved plasma performance in TEXTOR with silicon coated surfaces

J. Winter, H. G. Esser, G. L. Jackson, L. Könen, A. Messiaen, J. Ongena, V. Philipps, A. Pospiesczcyk, U. Samm, B. Schweer, B. Unterberg

Laboratory for Plasma Physics

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

Abstract

Coating of the walls of TEXTOR with silicon has led to improved tokamak plasma performance. Very low concentrations of C, B, and O are measured. Radiation from silicon is located at the plasma periphery at r/a0.75 and decreases with increasing plasma density. Density limits are enhanced by 30% as compared to boronized conditions; large density gradients and low electron temperatures at the edge (<10 eV) are obtained. The improved confinement regimes observed earlier at low densities [τE=1.7×ITER L 89-P International Thermonuclear Experimental Reactor)] were extended to significantly higher densities in spite of a high radiative power fraction.

Original language	English
Pages (from-to)	1549-1552
Number of pages	4
Journal	Physical Review Letters
Volume	71
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.71.1549
Publication status	Published - 1993

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10.1103/PhysRevLett.71.1549

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title = "Improved plasma performance in TEXTOR with silicon coated surfaces",

abstract = "Coating of the walls of TEXTOR with silicon has led to improved tokamak plasma performance. Very low concentrations of C, B, and O are measured. Radiation from silicon is located at the plasma periphery at r/a0.75 and decreases with increasing plasma density. Density limits are enhanced by 30\% as compared to boronized conditions; large density gradients and low electron temperatures at the edge (<10 eV) are obtained. The improved confinement regimes observed earlier at low densities [τE=1.7×ITER L 89-P International Thermonuclear Experimental Reactor)] were extended to significantly higher densities in spite of a high radiative power fraction.",

author = "J. Winter and Esser, \{H. G.\} and Jackson, \{G. L.\} and L. K{\"o}nen and A. Messiaen and J. Ongena and V. Philipps and A. Pospiesczcyk and U. Samm and B. Schweer and B. Unterberg",

year = "1993",

doi = "10.1103/PhysRevLett.71.1549",

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T1 - Improved plasma performance in TEXTOR with silicon coated surfaces

AU - Winter, J.

AU - Esser, H. G.

AU - Jackson, G. L.

AU - Könen, L.

AU - Messiaen, A.

AU - Ongena, J.

AU - Philipps, V.

AU - Pospiesczcyk, A.

AU - Samm, U.

AU - Schweer, B.

AU - Unterberg, B.

PY - 1993

Y1 - 1993

N2 - Coating of the walls of TEXTOR with silicon has led to improved tokamak plasma performance. Very low concentrations of C, B, and O are measured. Radiation from silicon is located at the plasma periphery at r/a0.75 and decreases with increasing plasma density. Density limits are enhanced by 30% as compared to boronized conditions; large density gradients and low electron temperatures at the edge (<10 eV) are obtained. The improved confinement regimes observed earlier at low densities [τE=1.7×ITER L 89-P International Thermonuclear Experimental Reactor)] were extended to significantly higher densities in spite of a high radiative power fraction.

AB - Coating of the walls of TEXTOR with silicon has led to improved tokamak plasma performance. Very low concentrations of C, B, and O are measured. Radiation from silicon is located at the plasma periphery at r/a0.75 and decreases with increasing plasma density. Density limits are enhanced by 30% as compared to boronized conditions; large density gradients and low electron temperatures at the edge (<10 eV) are obtained. The improved confinement regimes observed earlier at low densities [τE=1.7×ITER L 89-P International Thermonuclear Experimental Reactor)] were extended to significantly higher densities in spite of a high radiative power fraction.

UR - https://www.scopus.com/pages/publications/0342694214

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DO - 10.1103/PhysRevLett.71.1549

M3 - Article

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SN - 0031-9007

VL - 71

SP - 1549

EP - 1552

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

ER -

Improved plasma performance in TEXTOR with silicon coated surfaces

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