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research article

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

Valovic, M.
•
Baranov, Y.
•
Boboc, A.
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October 1, 2019
Nuclear Fusion

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.

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Type
research article
DOI
10.1088/1741-4326/ab3812
Web of Science ID

WOS:000485675500001

Author(s)
Valovic, M.
Baranov, Y.
Boboc, A.
Buchanan, J.
Citrin, J.
Delabie, E.
Frassinetti, L.
Fontdecaba, J. M.
Garzotti, L.
Giroud, C.
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Date Issued

2019-10-01

Publisher

IOP Publishing Ltd

Published in
Nuclear Fusion
Volume

59

Issue

10

Article Number

106047

Subjects

Physics, Fluids & Plasmas

•

Physics

•

tokamak

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isotope mix control

•

pellet fuelling

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h-mode

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confinement

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transport

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peaking

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SPC  
Available on Infoscience
November 6, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/162739
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