Confinement and transport in EC heated RI-mode discharges in TEXTOR

G. M.D. Hogeweij; P. Dumortier; D. Van Eester; F. A. Hoekzema; R. J.E. Jaspers; D. Kalupin; H. R. Koslowski; A. Messiaen; R. W. Polman; F. C. Schüller; B. Unterberg; M. Vervier; G. Van Wassenhove; E. Westerhof

doi:10.1088/0029-5515/44/4/007

Confinement and transport in EC heated RI-mode discharges in TEXTOR

G. M.D. Hogeweij, P. Dumortier, D. Van Eester, F. A. Hoekzema, R. J.E. Jaspers, D. Kalupin, H. R. Koslowski, A. Messiaen, R. W. Polman, F. C. Schüller, B. Unterberg, M. Vervier, G. Van Wassenhove, E. Westerhof

Laboratory for Plasma Physics

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

Abstract

This paper reports on experiments in TEXTOR with electron cyclotron resonance heating (ECRH) of radiatively improved (RI) mode discharges. With ECRH the energy content of RI-mode discharges can be increased without the normally observed power degradation in confinement time. The experiments are described and the effects of ECRH on global confinement and local plasma parameters of RI-mode discharges are discussed; the favourable scaling of energy content is due to a zone of low electron thermal transport just outside the sawtooth inversion radius. Moreover, the heating effect of ECRH in the RI-mode is compared with the effect in L-mode; this comparison sheds some light on the physics of electron thermal transport in RI-mode discharges.

Original language	English
Pages (from-to)	533-541
Number of pages	9
Journal	Nuclear Fusion
Volume	44
Issue number	4
DOIs	https://doi.org/10.1088/0029-5515/44/4/007
Publication status	Published - Apr 2004

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Hogeweij, G. M. D., Dumortier, P., Van Eester, D., Hoekzema, F. A., Jaspers, R. J. E., Kalupin, D., Koslowski, H. R., Messiaen, A., Polman, R. W., Schüller, F. C., Unterberg, B., Vervier, M., Van Wassenhove, G., & Westerhof, E. (2004). Confinement and transport in EC heated RI-mode discharges in TEXTOR. Nuclear Fusion, 44(4), 533-541. https://doi.org/10.1088/0029-5515/44/4/007

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title = "Confinement and transport in EC heated RI-mode discharges in TEXTOR",

abstract = "This paper reports on experiments in TEXTOR with electron cyclotron resonance heating (ECRH) of radiatively improved (RI) mode discharges. With ECRH the energy content of RI-mode discharges can be increased without the normally observed power degradation in confinement time. The experiments are described and the effects of ECRH on global confinement and local plasma parameters of RI-mode discharges are discussed; the favourable scaling of energy content is due to a zone of low electron thermal transport just outside the sawtooth inversion radius. Moreover, the heating effect of ECRH in the RI-mode is compared with the effect in L-mode; this comparison sheds some light on the physics of electron thermal transport in RI-mode discharges.",

author = "Hogeweij, {G. M.D.} and P. Dumortier and {Van Eester}, D. and Hoekzema, {F. A.} and Jaspers, {R. J.E.} and D. Kalupin and Koslowski, {H. R.} and A. Messiaen and Polman, {R. W.} and Sch{\"u}ller, {F. C.} and B. Unterberg and M. Vervier and {Van Wassenhove}, G. and E. Westerhof",

year = "2004",

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doi = "10.1088/0029-5515/44/4/007",

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volume = "44",

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T1 - Confinement and transport in EC heated RI-mode discharges in TEXTOR

AU - Hogeweij, G. M.D.

AU - Dumortier, P.

AU - Van Eester, D.

AU - Hoekzema, F. A.

AU - Jaspers, R. J.E.

AU - Kalupin, D.

AU - Koslowski, H. R.

AU - Messiaen, A.

AU - Polman, R. W.

AU - Schüller, F. C.

AU - Unterberg, B.

AU - Vervier, M.

AU - Van Wassenhove, G.

AU - Westerhof, E.

PY - 2004/4

Y1 - 2004/4

N2 - This paper reports on experiments in TEXTOR with electron cyclotron resonance heating (ECRH) of radiatively improved (RI) mode discharges. With ECRH the energy content of RI-mode discharges can be increased without the normally observed power degradation in confinement time. The experiments are described and the effects of ECRH on global confinement and local plasma parameters of RI-mode discharges are discussed; the favourable scaling of energy content is due to a zone of low electron thermal transport just outside the sawtooth inversion radius. Moreover, the heating effect of ECRH in the RI-mode is compared with the effect in L-mode; this comparison sheds some light on the physics of electron thermal transport in RI-mode discharges.

AB - This paper reports on experiments in TEXTOR with electron cyclotron resonance heating (ECRH) of radiatively improved (RI) mode discharges. With ECRH the energy content of RI-mode discharges can be increased without the normally observed power degradation in confinement time. The experiments are described and the effects of ECRH on global confinement and local plasma parameters of RI-mode discharges are discussed; the favourable scaling of energy content is due to a zone of low electron thermal transport just outside the sawtooth inversion radius. Moreover, the heating effect of ECRH in the RI-mode is compared with the effect in L-mode; this comparison sheds some light on the physics of electron thermal transport in RI-mode discharges.

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DO - 10.1088/0029-5515/44/4/007

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SN - 0029-5515

VL - 44

SP - 533

EP - 541

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 4

ER -

Confinement and transport in EC heated RI-mode discharges in TEXTOR

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