Control of the hydrogen:deuterium isotope mixture using pellets in JET

TitleControl of the hydrogen:deuterium isotope mixture using pellets in JET
Publication TypeJournal Article
Year of Publication2019
AuthorsM. Valovic, Y. Baranov, A. Boboc, J. Buchanan, J. Citrin, E. Delabie, L. Frassinetti, J. Fontdecaba, L. Garzotti, C. Giroud, R. McKean, E. Lerche, V. Kiptily, F. Kochl, M. Marin, M. Maslov, S. Menmuir, G. Tvalashvili, H. Weisen, JET Contributors
JournalNuclear Fusion
Volume59
Issue10
Pagination106047
Abstract

Deuterium pellets are injected into an initially pure hydrogen H-mode plasma in order to control the hydrogen:deuterium (H:D) isotope mixture. The pellets are deposited in the outer 20% of the minor radius, similar to that expected in ITER, creating transiently hollow electron density profiles. A H:D isotope mixture of approximately 45%:55% is obtained in the core with a pellet fuelling throughput of @pel = 0.045 P aux / T e.ped similar to previous pellet fuelling experiments in pure deuterium. Evolution of the H:D mix in the core is reproduced using a simple model, although deuterium transport could be higher at the beginning of the pellet train compared with the flat-top phase.

DOI10.1088/1741-4326/ab3812
Division

FP

Department

IMT

PID

4e740b87f1a943a47d0fb40534bcfcce

Alternate TitleNucl. Fusion

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