Modelling of optimised shear scenarious with LHCD for high performance experiments on JET

Tuomas Tala (Corresponding Author), Yu. F Baranov, V. Parail, F. Söldner, A. Taroni, Jukka Heikkinen, Seppo Karttunen

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

Modelling of LHCD with transport calculations is performed with the JETTO transport code, which has been upgraded by implementing the Fast Ray Tracing Code to calculate self-consistent LH power deposition profiles. Heat and particle transport models that are able to reproduce the experimental JET temperature and density profiles are used in JETTO for predictive high performance modelling. Application of 3.5 MW LHCD power provides an inverted q profile across 50-70% of the plasma radius whereas, without LHCD, the q profile is monotonic during the flat-top phase. The results predict that the fusion power is about 60% higher for high performance DT plasmas in the optimized shear scenario with 3.5 MW LHCD applied during the high performance phase than without LHCD at Bt = 3.4 T and Ip = 3.9 MA on JET. In addition, the width of the internal transport barrier (ITB) is 0.25-0.30 m larger and the ITB can be sustained for a longer time with LHCD.
Original languageEnglish
Pages (from-to)1635-1650
Number of pages16
JournalNuclear Fusion
Volume40
Issue number9
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

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Tala, T., Baranov, Y. F., Parail, V., Söldner, F., Taroni, A., Heikkinen, J., & Karttunen, S. (2000). Modelling of optimised shear scenarious with LHCD for high performance experiments on JET. Nuclear Fusion, 40(9), 1635-1650. https://doi.org/10.1088/0029-5515/40/9/308
Tala, Tuomas ; Baranov, Yu. F ; Parail, V. ; Söldner, F. ; Taroni, A. ; Heikkinen, Jukka ; Karttunen, Seppo. / Modelling of optimised shear scenarious with LHCD for high performance experiments on JET. In: Nuclear Fusion. 2000 ; Vol. 40, No. 9. pp. 1635-1650.
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abstract = "Modelling of LHCD with transport calculations is performed with the JETTO transport code, which has been upgraded by implementing the Fast Ray Tracing Code to calculate self-consistent LH power deposition profiles. Heat and particle transport models that are able to reproduce the experimental JET temperature and density profiles are used in JETTO for predictive high performance modelling. Application of 3.5 MW LHCD power provides an inverted q profile across 50-70{\%} of the plasma radius whereas, without LHCD, the q profile is monotonic during the flat-top phase. The results predict that the fusion power is about 60{\%} higher for high performance DT plasmas in the optimized shear scenario with 3.5 MW LHCD applied during the high performance phase than without LHCD at Bt = 3.4 T and Ip = 3.9 MA on JET. In addition, the width of the internal transport barrier (ITB) is 0.25-0.30 m larger and the ITB can be sustained for a longer time with LHCD.",
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Tala, T, Baranov, YF, Parail, V, Söldner, F, Taroni, A, Heikkinen, J & Karttunen, S 2000, 'Modelling of optimised shear scenarious with LHCD for high performance experiments on JET', Nuclear Fusion, vol. 40, no. 9, pp. 1635-1650. https://doi.org/10.1088/0029-5515/40/9/308

Modelling of optimised shear scenarious with LHCD for high performance experiments on JET. / Tala, Tuomas (Corresponding Author); Baranov, Yu. F; Parail, V.; Söldner, F.; Taroni, A.; Heikkinen, Jukka; Karttunen, Seppo.

In: Nuclear Fusion, Vol. 40, No. 9, 2000, p. 1635-1650.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modelling of optimised shear scenarious with LHCD for high performance experiments on JET

AU - Tala, Tuomas

AU - Baranov, Yu. F

AU - Parail, V.

AU - Söldner, F.

AU - Taroni, A.

AU - Heikkinen, Jukka

AU - Karttunen, Seppo

PY - 2000

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N2 - Modelling of LHCD with transport calculations is performed with the JETTO transport code, which has been upgraded by implementing the Fast Ray Tracing Code to calculate self-consistent LH power deposition profiles. Heat and particle transport models that are able to reproduce the experimental JET temperature and density profiles are used in JETTO for predictive high performance modelling. Application of 3.5 MW LHCD power provides an inverted q profile across 50-70% of the plasma radius whereas, without LHCD, the q profile is monotonic during the flat-top phase. The results predict that the fusion power is about 60% higher for high performance DT plasmas in the optimized shear scenario with 3.5 MW LHCD applied during the high performance phase than without LHCD at Bt = 3.4 T and Ip = 3.9 MA on JET. In addition, the width of the internal transport barrier (ITB) is 0.25-0.30 m larger and the ITB can be sustained for a longer time with LHCD.

AB - Modelling of LHCD with transport calculations is performed with the JETTO transport code, which has been upgraded by implementing the Fast Ray Tracing Code to calculate self-consistent LH power deposition profiles. Heat and particle transport models that are able to reproduce the experimental JET temperature and density profiles are used in JETTO for predictive high performance modelling. Application of 3.5 MW LHCD power provides an inverted q profile across 50-70% of the plasma radius whereas, without LHCD, the q profile is monotonic during the flat-top phase. The results predict that the fusion power is about 60% higher for high performance DT plasmas in the optimized shear scenario with 3.5 MW LHCD applied during the high performance phase than without LHCD at Bt = 3.4 T and Ip = 3.9 MA on JET. In addition, the width of the internal transport barrier (ITB) is 0.25-0.30 m larger and the ITB can be sustained for a longer time with LHCD.

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