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@ARTICLE{Matveev:1017215,
author = {Matveev, D. and Douai, D. and Wauters, T. and Widdowson, A.
and Jepu, I. and Maslov, M. and Brezinsek, S. and Dittmar,
T. and Monakhov, I. and Jacquet, P. and Dumortier, P. and
Sheikh, H. and Felton, R. and Lowry, C. and Ciric, D. and
Banks, J. and Buckingham, R. and Weisen, H. and Laguardia,
L. and Gervasini, G. and de la Cal, E. and Delabie, E. and
Ghani, Z. and Gaspar, J. and Romazanov, J. and Groth, M. and
Kumpulainen, H. and Karhunen, J. and Knipe, S. and
Aleiferis, S. and Loarer, T. and Meigs, A. and Noble, C. and
Papadopoulos, G. and Pawelec, E. and Romanelli, S. and
Silburn, S. and Joffrin, E. and Tsitrone, E. and Rimini, F.
and Maggi, C. F.},
title = {{T}ritium removal from {JET}-{ILW} after {T} and {D}–{T}
experimental campaigns},
journal = {Nuclear fusion},
volume = {63},
number = {11},
issn = {0029-5515},
address = {Vienna},
publisher = {IAEA},
reportid = {FZJ-2023-04026},
pages = {112014 -},
year = {2023},
abstract = {After the second Deuterium–Tritium Campaign (DTE2) in the
JET tokamak with the ITER-Like Wall (ILW) and full tritium
campaigns that preceded and followed after the DTE2, a
sequence of fuel recovery methods was applied to promote
tritium removal from wall components. The sequence started
with several days of baking of the main chamber walls at 240
°C and at 320 °C. Subsequently, baking was superimposed
with Ion-Cyclotron Wall Conditioning (ICWC) and Glow
Discharge Conditioning (GDC) cleaning cycles in deuterium.
Diverted plasma operation in deuterium with different strike
point configurations, including a Raised Inner Strike Point
(RISP) configuration, and with different plasma
heating—Ion Cyclotron Resonance Frequency (ICRF) and
Neutral Beam Injection (NBI)—concluded the cleaning
sequence. Tritium content in plasma and in the pumped gas
was monitored throughout the experiment. The applied fuel
recovery methods allowed reducing the residual tritium
content in deuterium NBI-heated plasmas to about $0.1\%$ as
deduced from neutron rate measurements. This value is well
below the requirement of $1\%$ set by the maximum 14 MeV
fusion neutron budget allocated in the ensuing deuterium
plasma campaign. The quantified tritium removal over the
course of the experiment was $\left( {13.4 \pm 0.7} \right)
\times {10^{22}}$ atoms or $\left( {0.67 \pm 0.03} \right)$
g with ∼58\% attributed to baking, ∼12.5\% to ICWC,
∼26\% to GDC, and ∼3.5\% to first low power RISP
plasmas. The experimentally estimated amount of removed
tritium is in good agreement with long-term tritium
accounting by the JET tritium reprocessing plant, in which
the unaccounted amount was reduced by $0.71$ g after the
cleaning experiment.},
cin = {IEK-4},
ddc = {620},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
pid = {G:(DE-HGF)POF4-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001083101200001},
doi = {10.1088/1741-4326/acf0d4},
url = {https://juser.fz-juelich.de/record/1017215},
}