1. Validation of D-T fusion power prediction capability against 2021 JET D-T experiments
- Author
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Kim, H, Auriemma, F, Ferreira, J, Gabriellini, S, Ho, A, Huynh, P, Kirov, K, Lorenzini, R, Marin, M, Poradzinski, M, Shi, N, Staebler, G, Stancar, Z, Stankunas, G, Zotta, V, Belli, E, Casson, F, Challis, C, Citrin, J, van Eester, D, Fransson, E, Gallart, D, Garcia, J, Garzotti, L, Gatto, R, Hobirk, J, Kappatou, A, Lerche, E, Ludvig-Osipov, A, Maggi, C, Maslov, M, Nocente, M, Sharma, R, Di Siena, A, Strand, P, Tholerus, E, Yadykin, D, Kim, HT, Ho, AR, Zotta, VK, Casson, FJ, Kim, H, Auriemma, F, Ferreira, J, Gabriellini, S, Ho, A, Huynh, P, Kirov, K, Lorenzini, R, Marin, M, Poradzinski, M, Shi, N, Staebler, G, Stancar, Z, Stankunas, G, Zotta, V, Belli, E, Casson, F, Challis, C, Citrin, J, van Eester, D, Fransson, E, Gallart, D, Garcia, J, Garzotti, L, Gatto, R, Hobirk, J, Kappatou, A, Lerche, E, Ludvig-Osipov, A, Maggi, C, Maslov, M, Nocente, M, Sharma, R, Di Siena, A, Strand, P, Tholerus, E, Yadykin, D, Kim, HT, Ho, AR, Zotta, VK, and Casson, FJ
- Abstract
JET experiments using the fuel mixture envisaged for fusion power plants, deuterium and tritium (D-T), provide a unique opportunity to validate existing D-T fusion power prediction capabilities in support of future device design and operation preparation. The 2021 JET D-T experimental campaign has achieved D-T fusion powers sustained over 5 s in ITER-relevant conditions i.e. operation with the baseline or hybrid scenario in the full metallic wall. In preparation of the 2021 JET D-T experimental campaign, extensive D-T predictive modelling was carried out with several assumptions based on D discharges. To improve the validity of ITER D-T predictive modelling in the future, it is important to use the input data measured from 2021 JET D-T discharges in the present core predictive modelling, and to specify the accuracy of the D-T fusion power prediction in comparison with the experiments. This paper reports on the validation of the core integrated modelling with TRANSP, JINTRAC, and ETS coupled with a quasilinear turbulent transport model (Trapped Gyro Landau Fluid or QualLiKiz) against the measured data in 2021 JET D-T discharges. Detailed simulation settings and the heating and transport models used are described. The D-T fusion power calculated with the interpretive TRANSP runs for 38 D-T discharges (12 baseline and 26 hybrid discharges) reproduced the measured values within 20 % . This indicates the additional uncertainties, that could result from the measurement error bars in kinetic profiles, impurity contents and neutron rates, and also from the beam-thermal fusion reaction modelling, are less than 20 % in total. The good statistical agreement confirms that we have the capability to accurately calculate the D-T fusion power if correct kinetic profiles are predicted, and indicates that any larger deviation of the D-T fusion power prediction from the measured fusion power could be attributed to the deviation of the predicted kinetic profiles from the measured kinet
- Published
- 2023