TY  - JOUR
AU  - Loarer, T.
AU  - Brezinsek, S.
AU  - Philipps, V.
AU  - Romanelli-Gruenhagen, S.
AU  - Alves, D.
AU  - Carvalho, I.
AU  - Douai, D.
AU  - Esser, H. G.
AU  - Felton, R.
AU  - Frigione, D.
AU  - Kruezi, U.
AU  - Reux, C.
AU  - Smith, R.
AU  - Stamp, M. F.
AU  - Vartanian, S.
TI  - Plasma isotopic change over experiments in JET under Carbon and ITER-Like Wall conditions
JO  - Journal of nuclear materials
VL  - 463
SN  - 0022-3115
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2015-04487
SP  - 1117 - 1121
PY  - 2015
AB  - Starting with a wall loaded by H2, change over experiments from H2 to D2 have been carried out in JET-ILW. A series of 13 repetitive pulses (cumulating 215 s in divertor configuration) have been performed under conditions of: Ip = 2.0 MA, BT = 2.4 T, 〈ne〉 = 4.5 × 1019 m−3 with a constant gas injection of 3.0 × 1021 D s−1 and 0.5 MW of auxiliary heating by ICRH in L-mode. Gas balance analysis shows that the total amount of H removed from the wall is in the range of 3 × 1022 D compared to 2 × 1023 D for JET-C. This is consistent with the faster decay of the H plasma concentration and the drop of the retention also by a similar factor when removing all the carbon components.Isotopic plasma wall changeover is also demonstrated to allow for removal of some D/T from the device. However, since plasma change over also contributes to long-term retention by codeposition, in ITER, change over in between each discharge might not be effective to reduce the fuel retention on the long-term.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000358467200244
DO  - DOI:10.1016/j.jnucmat.2014.11.012
UR  - https://juser.fz-juelich.de/record/202198
ER  -