TY - JOUR
T1 - L-H transition studies in tritium and deuterium-tritium campaigns at JET with Be wall and W divertor
AU - Solano, E.
AU - Birkenmeier, G.
AU - Silva, C.
AU - Delabie, E.
AU - Hillesheim, J.
AU - Baciero, A.
AU - Balboa, I.
AU - Baruzzo, M.
AU - Boboc, A.
AU - Brix, M.
AU - Bernardo, J.
AU - Bourdelle, C.
AU - Carvalho, I.
AU - Carvalho, P.
AU - Challis, C.
AU - Chernyshova, M.
AU - Chomiczewska, A.
AU - Coelho, R.
AU - Coffey, I.
AU - Craciunescu, T.
AU - de la Cal, E.
AU - de la Luna, E.
AU - Dumont, R.
AU - Dumortier, P.
AU - Fontana, M.
AU - Fontdecaba, J.
AU - Frassinetti, L.
AU - Gallart, D.
AU - Garcia, J.
AU - Giroud, C.
AU - Gromelski, W.
AU - Henriques, R.
AU - Hall, J.
AU - Ho, A.
AU - Horton, L.
AU - Horvath, L.
AU - Jacquet, P.
AU - Jepu, I.
AU - Joffrin, E.
AU - Kappatou, A.
AU - Keeling, D.
AU - King, D.
AU - Kiptily, V.
AU - Kirov, K.
AU - Kos, D.
AU - Kowalska-Strzęciwilk, E.
AU - Lennholm, M.
AU - Lerche, E.
AU - Litherland-Smith, E.
AU - Verdoolaege, G.
AU - JET Contributors
N1 - Publisher Copyright:
© EURATOM 2023
PY - 2023/11
Y1 - 2023/11
N2 - The recent deuterium-tritium campaign in JET-ILW (DTE2) has provided a unique opportunity to study the isotope dependence of the L-H power threshold in an ITER-like wall environment (Be wall and W divertor). Here we present results from dedicated L-H transition experiments at JET-ILW, documenting the power threshold in tritium and deuterium-tritium plasmas, comparing them with the matching deuterium and hydrogen datasets. From earlier experiments in JET-ILW it is known that as plasma isotopic composition changes from deuterium, through varying deuterium/hydrogen concentrations, to pure hydrogen, the value of the line averaged density at which the threshold is minimum, n ˉ e , min , increases, leading us to expect that n ˉ e , min (T) < n ˉ e , min (DT) < n ˉ e , min (D) < n ˉ e , min (H). The new power threshold data confirms these expectations in most cases, with the corresponding ordering of the minimum power thresholds. We present a comparison of this data to power threshold scalings, used for extrapolation to future devices such as ITER and DEMO.
AB - The recent deuterium-tritium campaign in JET-ILW (DTE2) has provided a unique opportunity to study the isotope dependence of the L-H power threshold in an ITER-like wall environment (Be wall and W divertor). Here we present results from dedicated L-H transition experiments at JET-ILW, documenting the power threshold in tritium and deuterium-tritium plasmas, comparing them with the matching deuterium and hydrogen datasets. From earlier experiments in JET-ILW it is known that as plasma isotopic composition changes from deuterium, through varying deuterium/hydrogen concentrations, to pure hydrogen, the value of the line averaged density at which the threshold is minimum, n ˉ e , min , increases, leading us to expect that n ˉ e , min (T) < n ˉ e , min (DT) < n ˉ e , min (D) < n ˉ e , min (H). The new power threshold data confirms these expectations in most cases, with the corresponding ordering of the minimum power thresholds. We present a comparison of this data to power threshold scalings, used for extrapolation to future devices such as ITER and DEMO.
KW - DT
KW - JET-ILW
KW - L-H transition
KW - Tritium
KW - isotope
KW - power threshold
KW - tokamaks
UR - https://www.scopus.com/pages/publications/85175398510
U2 - 10.1088/1741-4326/acee12
DO - 10.1088/1741-4326/acee12
M3 - Article
AN - SCOPUS:85175398510
SN - 0029-5515
VL - 63
JO - Nuclear Fusion
JF - Nuclear Fusion
IS - 11
M1 - 112011
ER -