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@ARTICLE{MonierGarbet:48298,
author = {Monier-Garbet, P. and Andrew, Ph. and Rapp, J. and Belo, P.
and Bonheure, G. and Corre, Y. and Crombe, K. and Dumortier,
P. and Eich, T. and Felton, R. and Harling, J. and Hogan, J.
and Huber, A. and Jachmich, S. and Joffrin, E. and
Koslowski, H. R. and Kreter, A. and Maddison, G. and
Matthews, G. F. and Messiaen, A. and Nave, M. F. and Ongena,
J. and Parail, V. and Puiatti, M. E. and Rapp, J. and
Sartori, R. and Stober, J. and Tokar, M. Z. and Unterberg,
B. and Valisa, M. and Voitsekhovitch, I. and von Hellermann,
M.},
title = {{I}mpurity seeded {ELM}y {H}-modes in {JET} with high
density and reduced heat load},
journal = {Nuclear fusion},
volume = {45},
issn = {0029-5515},
address = {Vienna},
publisher = {IAEA},
reportid = {PreJuSER-48298},
pages = {1404 - 1410},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {Experiments performed at JET during the past two years show
that, in high triangularity H-mode plasmas with I-p = 2.5
MA, n(e)/n(Gr) approximate to 1.0, it is possible to radiate
separately up to approximate to $40\%$ of the total injected
power on closed flux surfaces in the pedestal region (argon
seeding) and up to approximate to $50\%$ of the injected
power in the divertor region (nitrogen seeding), while
maintaining the confinement improvement factor at the value
required for ITER, H98(y, 2) 1.0. The total radiated power
fraction achieved in both cases $(65-70\%)$ is close to that
required for ITER. However, Type I ELMS observed with
impurity seeding have the same characteristics as that
observed in reference pulses without seeding: decreasing
plasma energy loss per ELM with increasing pedestal
collisionality. One has to reach the Type III ELM regime to
decrease the transient heat load to the divertor to
acceptable values for ITER, although at the expense of
confinement. The feasibility of an integrated scenario with
Type-III ELMS, and q(95) = 2.6 to compensate for the low H
factor, has been demonstrated on JET. This scenario would
meet ITER requirements at 17 MA provided that the IPB98
scaling for energy content is accurate enough, and provided
that a lower dilution is obtained when operating at higher
absolute electron density.},
keywords = {J (WoSType)},
cin = {IPP},
ddc = {530},
cid = {I:(DE-Juel1)VDB181},
pnm = {Kernfusion und Plasmaforschung},
pid = {G:(DE-Juel1)FUEK250},
shelfmark = {Physics, Fluids $\&$ Plasmas / Physics, Nuclear},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000233679100024},
doi = {10.1088/0029-5515/45/11/022},
url = {https://juser.fz-juelich.de/record/48298},
}