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22-27 October 2018
Mahatma Mandir Conference Centre
Asia/Kolkata timezone
CONFERENCE MATERIAL NOW AVAILABLE!

Gyrokinetic Modeling of Turbulent Particle Fluxes towards Efficient Predictions of Density Profiles

25 Oct 2018, 14:00
4h 45m
Mahatma Mandir Conference Centre

Mahatma Mandir Conference Centre

Gandhinagar (nearest Airport: Ahmedabad), India
Poster P6 Posters

Speaker

Ms Emi Narita (National Institutes for Quantum and Radiological Science and Technology)

Description

A novel quasilinear particle transport model is constructed by joint analyses with gyrokinetic calculations and JT-60U experimental data. The new model deals with the diagonal (diffusion) and off-diagonal (pinch) transport mechanisms individually. Besides the decomposition, realistic particle sources from neutral-beam fueling are taken into account, which have not been discussed in earlier studies. Taking advantage of the features offered by the model, (i) the contribution from each transport mechanism to particle fluxes is quantitatively clarified, and (ii) a framework is developed, which enables us to predict the particle fluxes accurately and quickly, taking a neural-network-based approach. Moreover, (iii) a scaling formula is derived, considering linear zonal flows to understand mechanisms which determine the particle fluxes.
Country or International Organization Japan
Paper Number TH/P6-9

Primary author

Ms Emi Narita (National Institutes for Quantum and Radiological Science and Technology)

Co-authors

Dr Hidenobu Takenaga (National Institutes for Quantum and Radiological Science and Technology) Dr Maiko Yoshida (National Institutes for Quantum and Radiological Science and Technology) Dr Mitsuru Honda (National Institutes for Quantum and Radiological Science and Technology) Dr Motoki Nakata (National Institute for Fusion Science) Dr Nobuhiko Hayashi (National Institutes for Quantum and Radiological Science and Technology)

Presentation Materials

Paper