Tritium recycling and retention in JET

JET's 1997 Deuterium Tritium Experiment (DTE1) allows a detailed study of hydrogenic isotope recycling and retention in a pumped divertor configuration relevant to ITER. There appear to be two distinct forms of retained tritium. (1) A dynamic inventory which controls the fueling behaviour of a...

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Published inJournal of nuclear materials Vol. 266; pp. 153 - 159
Main Authors Andrew, P, Brennan, D, Coad, J.P, Ehrenberg, J, Gadeberg, M, Gibson, A, Groth, M, How, J, Jarvis, O.N, Jensen, H, Lässer, R, Marcus, F, Monk, R, Morgan, P, Orchard, J, Peacock, A, Pearce, R, Pick, M, Rossi, A, Schunke, B, Stamp, M, von Hellermann, M, Hillis, D.L, Hogan, J
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.1999
Subjects
JET
Tritium retention
Wall pumping
Wall pumping
JET
Tritium retention
P05
C01
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Summary:JET's 1997 Deuterium Tritium Experiment (DTE1) allows a detailed study of hydrogenic isotope recycling and retention in a pumped divertor configuration relevant to ITER. There appear to be two distinct forms of retained tritium. (1) A dynamic inventory which controls the fueling behaviour of a single discharge, and in particular determines the isotopic composition. This is shown to be consistent with neutral particle implantation over the whole vessel surface area. (2) A continually growing inventory, which plays a small role in the particle balance of a single discharge, but ultimately dominates the hydrogenic inventory for an experimental campaign comprising thousands of pulses. This will be the dominant retention mechanism in long-pulse devices like ITER. The JET retention scaled-up to ITER proportions suggests that ITER may reach its tritium inventory limit in less than 100 pulses.
ISSN:0022-3115
1873-4820
DOI:10.1016/S0022-3115(98)00662-X