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

Autori
Valovič, M. ; Baranov, Y. ; Boboc, A. ; Buchanan, J. ; Citrin, J. ; Delabie, E. ; Frassinetti, L. ; Fontdecaba, J.M. ; Garzotti, L. ; Giroud, C. ; McKean, R. ; Lerche, E. ; Kiptily, V. ; Köchl, F. ; Marin, M. ; Maslov, M. ; Menmuir, S. ; Tvalashvili, G. ; Weisen, H.

Kolaboracija
JET Contributors

Izvornik
Nuclear fusion (0029-5515) 59 (2019), 10; 106047, 7

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
tokamak ; isotope mix control ; pellet fuelling

Sažetak
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 Phi(pel) = 0.045P(aux)/T-e, T-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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA