Abstract
Research activities that can provide adequate
contributions or solutions to technological issues of
importance for both JET and ITER are carried out at
Culham and in the European national laboratories. They
are closely related to the EFDA Technology Workprogramme.
This programme of Fusion Technology at JET (FT) covers a
wide range of research areas such as tritium in the
tokamak, tritium processes and waste management, plasma
facing components, other fusion engineering aspects and
safety. This paper presents the status and the programme
of those fusion technology activities at JET not directly
related to tritium.
The characterisation of first wall material using various
surface analytical techniques (SIMS, TOF-ERDA, RBS, NRA,
IBA) is carried out on tiles removed from JET. The
results are analysed by taking into account the actual
integrated ion flux on the plasma exposed surfaces. To
investigate the erosion properties of tungsten, a
poloidal set of 6 carbon tiles has been covered with
tungsten layers and were installed in the JET machine
during the 2001 shutdown. A programme using long-term
samples (LTS) for erosion rate measurements and sticking
monitors to determine sticking coefficients of
hydrocarbon radicals is in progress.
A few Mark II Divertor tiles will be tested in the
Neutral Beam (NB) test bed facility, simulating different
JET plasma heat loads, in order to validate a model for
plasma facing components behaviour and the mechanism of
first wall material transport.
Optic fibres under qualification for ITER use will be
tested on JET as well as an in-vessel viewing system
based on laser technology in order to increase the
quality and the completeness of the images.
Data of the operating experience of the major JET systems
as well data on operating experience with Remote Handling
facilities during the JET shutdowns are collected and
elaborated to support the ITER design with an improved
failure rate data base and operating experience.
Nuclear activation and shutdown dose rate calculation
models are benchmarked on JET and some models have been
significantly improved.
Original language | English |
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Title of host publication | 22nd Symposium on Fusion Technology |
Subtitle of host publication | Book of Abstracts |
Place of Publication | Espoo |
Publisher | VTT Technical Research Centre of Finland |
Pages | 90-90 |
ISBN (Electronic) | 951-38-5731-X |
ISBN (Print) | 951-38-5730-1 |
Publication status | Published - 2002 |
MoE publication type | Not Eligible |
Event | 22nd Symposium on Fusion Technology - Helsinki, Finland Duration: 9 Sept 2002 → 13 Sept 2002 Conference number: 22 |
Publication series
Series | VTT Symposium |
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Number | 220 |
ISSN | 0357-9387 |
Conference
Conference | 22nd Symposium on Fusion Technology |
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Abbreviated title | SOFTA |
Country/Territory | Finland |
City | Helsinki |
Period | 9/09/02 → 13/09/02 |