Tritium recycling and retention in JET

P. Andrew*, D. Brennan, J. P. Coad, J. Ehrenberg, M. Gadeberg, A. Gibson, M. Groth, J. How, O. N. Jarvis, H. Jensen, R. Lässer, F. Marcus, R. Monk, P. Morgan, J. Orchard, A. Peacock, R. Pearce, M. Pick, A. Rossi, B. SchunkeM. Stamp, M. Von Hellermann, D. L. Hillis, J. Hogan

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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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.

Original languageEnglish
Pages (from-to)153-159
Number of pages7
JournalJournal of Nuclear Materials
Publication statusPublished - Mar 1999
MoE publication typeA1 Journal article-refereed

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    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., ... Hogan, J. (1999). Tritium recycling and retention in JET. Journal of Nuclear Materials, 266-269, 153-159.