Technical and Scientific Aspects of the JET Trace-Tritium Experimental Campaign

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Fusion Science and Technology

OSTI ID:20854144

Jones, T T.C. ^[1]; Brennan, D ^[1]; Pearce, R J.H. ^[1]; Stork, D ^[1]; Zastrow, K -D ^[1]; Balshaw, N ^[1]; Bell, A C ^[1]; Bertalot, L ^[2]; Boyer, H ^[1]; Butcher, P R ^[1]; Challis, C D ^[1]; Ciric, D ^[1]; Clarke, R ^[1]; Conroy, S ^[3]; Darke, A C ^[1]; Davies, N ^[1]; Edlington, T ^[1]; Ericsson, G ^[3]; Gibbons, C ^[1]; Hackett, L J ^[1] ; Haupt, T ^[1]; Hitchin, M ^[1]; Kaye, A S ^[1]; King, R ^[1]; Kiptily, V G ^[1]; Knipe, S ^[1]; Lawrence, G ^[1]; Lobel, R ^[1]; Mason, A ^[1]; Morgan, P D ^[1]; Patel, B ^[1]; Popovichev, S ^[1]; Stamp, M ^[1]; Surrey, E ^[1]; Terrington, A ^[1]; Worth, L ^[1]; Young, D ^[1]

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1. Culham Science Centre (United Kingdom)
2. Associazione EURATOM/ENEA sulla Fusione (Italy)
3. Uppsala University (Sweden)

The JET Trace Tritium (TTE) programme marked the first use of tritium in experiments under the managerial control of UKAEA, which operates the JET Facility on behalf of EFDA. The introduction of tritium into the plasma by gas fuelling and neutral beam injection, even in trace quantities, required the mobilisation of gram-quantities of tritium gas from the Active Gas Handling System (AGHS) product storage units into the supply lines connected to the torus gas valve and the neutral beam injectors. All systems for DT gas handling, recovery and reprocessing were therefore recommissioned and operating procedures re-established, involving extensive operations staff training. The validation of Key Safety Related Equipment (KSRE) is described with reference to specific examples. The differences between requirements for TTE and full DT operations are shown to be relatively small. The scientific motivation for TTE, such as the possibility to obtain high-quality measurements in key areas such as fuel-ion transport and fast ion dynamics, is described, and the re-establishment and development of JET's 14MeV neutron diagnostic capability for TTE and future DT campaigns are outlined. Some scientific highlights from the TTE campaign are presented.

• OSTI ID: 20854144
• Journal Information: Fusion Science and Technology, Vol. 48, Issue 1; Other Information: Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA); ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AVAILABILITY
BEAM INJECTION HEATING
CONTROL
GAS FUELS
JET TOKAMAK
NEUTRAL ATOM BEAM INJECTION
NEUTRONS
PLASMA
RADIATION TRANSPORT
REPROCESSING
SAFETY
TRITIUM