Overview of the JET results

F. Romanelli, M. O'Mullane, H.P Summers, JET Contributors

Research output: Contribution to journalArticle

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Abstract

Since the installation of an ITER-like wall, the JET programme has focused on the consolidation of ITER design choices and the preparation for ITER operation, with a specific emphasis given to the bulk tungsten melt experiment, which has been crucial for the final decision on the material choice for the day-one tungsten divertor in ITER. Integrated scenarios have been progressed with the re-establishment of long-pulse, high-confinement H-modes by optimizing the magnetic configuration and the use of ICRH to avoid tungsten impurity accumulation. Stationary discharges with detached divertor conditions and small edge localized modes have been demonstrated by nitrogen seeding. The differences in confinement and pedestal behaviour before and after the ITER-like wall installation have been better characterized towards the development of high fusion yield scenarios in DT. Post-mortem analyses of the plasma-facing components have confirmed the previously reported low fuel retention obtained by gas balance and shown that the pattern of deposition within the divertor has changed significantly with respect to the JET carbon wall campaigns due to the absence of thermally activated chemical erosion of beryllium in contrast to carbon. Transport to remote areas is almost absent and two orders of magnitude less material is found in the divertor.
Original languageEnglish
Article number104001
Number of pages14
JournalNuclear Fusion
Volume55
Issue number10
DOIs
Publication statusPublished - 27 Mar 2015

Fingerprint

tungsten
installing
carbon
consolidation
inoculation
beryllium
erosion
fusion
nitrogen
impurities
preparation
configurations
pulses
gases

Keywords

  • JET
  • tokamaks
  • magnetic confinement
  • nuclear physics
  • nuclear fusion

Cite this

Romanelli, F. ; O'Mullane, M. ; Summers, H.P ; JET Contributors. / Overview of the JET results. In: Nuclear Fusion. 2015 ; Vol. 55, No. 10.
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Overview of the JET results. / Romanelli, F.; O'Mullane, M.; Summers, H.P; JET Contributors.

In: Nuclear Fusion, Vol. 55, No. 10, 104001, 27.03.2015.

Research output: Contribution to journalArticle

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