Predictive modelling of optimised shear scenarios for high performance experiments on JET

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

Research output: Book/ReportReport

Abstract

Modelling of lower hybrid current drive 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 lower hybrid 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 3.5MW 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 the high performance D-T plasmas in the optimised shear scenario with 3.5MW LHCD applied during the high performance phase than without LHCD at Bt =3.4T and Ip =3.9MA on JET. Also, the width of the ITB is 0.25–0.30m larger and the ITB can be sustained for longer time with LHCD.
Original languageEnglish
Place of PublicationAbingdon
Publication statusPublished - 1999
MoE publication typeD4 Published development or research report or study

Publication series

SeriesJET Preprint Series
NumberJET-P(99)65

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shear
profiles
ray tracing
temperature profiles
fusion
heat
radii

Cite this

Tala, T., Baranov, Y. F., Heikkinen, J., Karttunen, S., Parail, V., Söldner, F., & Taroni, A. (1999). Predictive modelling of optimised shear scenarios for high performance experiments on JET. Abingdon. JET Preprint Series, No. JET-P(99)65
Tala, Tuomas ; Baranov, Yu. F ; Heikkinen, Jukka ; Karttunen, Seppo ; Parail, V. ; Söldner, F. ; Taroni, A. / Predictive modelling of optimised shear scenarios for high performance experiments on JET. Abingdon, 1999. (JET Preprint Series; No. JET-P(99)65).
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abstract = "Modelling of lower hybrid current drive 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 lower hybrid 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 3.5MW 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 the high performance D-T plasmas in the optimised shear scenario with 3.5MW LHCD applied during the high performance phase than without LHCD at Bt =3.4T and Ip =3.9MA on JET. Also, the width of the ITB is 0.25–0.30m larger and the ITB can be sustained for longer time with LHCD.",
author = "Tuomas Tala and Baranov, {Yu. F} and Jukka Heikkinen and Seppo Karttunen and V. Parail and F. S{\"o}ldner and A. Taroni",
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Tala, T, Baranov, YF, Heikkinen, J, Karttunen, S, Parail, V, Söldner, F & Taroni, A 1999, Predictive modelling of optimised shear scenarios for high performance experiments on JET. JET Preprint Series, no. JET-P(99)65, Abingdon.

Predictive modelling of optimised shear scenarios for high performance experiments on JET. / Tala, Tuomas; Baranov, Yu. F; Heikkinen, Jukka; Karttunen, Seppo; Parail, V.; Söldner, F.; Taroni, A.

Abingdon, 1999. (JET Preprint Series; No. JET-P(99)65).

Research output: Book/ReportReport

TY - BOOK

T1 - Predictive modelling of optimised shear scenarios for high performance experiments on JET

AU - Tala, Tuomas

AU - Baranov, Yu. F

AU - Heikkinen, Jukka

AU - Karttunen, Seppo

AU - Parail, V.

AU - Söldner, F.

AU - Taroni, A.

N1 - LIS: D2 CA2: 1404 CA: KET

PY - 1999

Y1 - 1999

N2 - Modelling of lower hybrid current drive 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 lower hybrid 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 3.5MW 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 the high performance D-T plasmas in the optimised shear scenario with 3.5MW LHCD applied during the high performance phase than without LHCD at Bt =3.4T and Ip =3.9MA on JET. Also, the width of the ITB is 0.25–0.30m larger and the ITB can be sustained for longer time with LHCD.

AB - Modelling of lower hybrid current drive 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 lower hybrid 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 3.5MW 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 the high performance D-T plasmas in the optimised shear scenario with 3.5MW LHCD applied during the high performance phase than without LHCD at Bt =3.4T and Ip =3.9MA on JET. Also, the width of the ITB is 0.25–0.30m larger and the ITB can be sustained for longer time with LHCD.

M3 - Report

T3 - JET Preprint Series

BT - Predictive modelling of optimised shear scenarios for high performance experiments on JET

CY - Abingdon

ER -

Tala T, Baranov YF, Heikkinen J, Karttunen S, Parail V, Söldner F et al. Predictive modelling of optimised shear scenarios for high performance experiments on JET. Abingdon, 1999. (JET Preprint Series; No. JET-P(99)65).