First Nitrogen-seeding Experiments in JET with the ITER-like Wall

M. Oberkofler; D. Douai; S. Brezinsek; J.W. Coenen; T. Dittmar; A. Drenik; S.G. Romanelli; E. Joffrin; K. McCormick; M. Brix; G. Calabro; M. Clever; Carine Giroud; U. Kruezi; K. Lawson; Ch. Linsmeier; A. Martin Rojo; A. Meigs; S. Marsen; R. Neu; M. Reinelt; B. Sieglin; G. Sips; M. Stamp; F.L. Tabares; Leena Aho-Mantila; The EFDA-JET Contributors

doi:10.1016/j.jnucmat.2013.01.041

First Nitrogen-seeding Experiments in JET with the ITER-like Wall

M. Oberkofler, D. Douai, S. Brezinsek, J.W. Coenen, T. Dittmar, A. Drenik, S.G. Romanelli, E. Joffrin, K. McCormick, M. Brix, G. Calabro, M. Clever, Carine Giroud, U. Kruezi, K. Lawson, Ch. Linsmeier, A. Martin Rojo, A. Meigs, S. Marsen, R. NeuM. Reinelt, B. Sieglin, G. Sips, M. Stamp, F.L. Tabares, Leena Aho-Mantila, The EFDA-JET Contributors

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Abstract

In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.

Original language	English
Pages (from-to)	S258-S261
Journal	Journal of Nuclear Materials
Volume	438
Issue number	Supplement
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.041
Publication status	Published - 2013
MoE publication type	A4 Article in a conference publication
Event	20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany Duration: 21 May 2012 → 25 May 2012

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Oberkofler, M., Douai, D., Brezinsek, S., Coenen, J. W., Dittmar, T., Drenik, A., Romanelli, S. G., Joffrin, E., McCormick, K., Brix, M., Calabro, G., Clever, M., Giroud, C., Kruezi, U., Lawson, K., Linsmeier, C., Martin Rojo, A., Meigs, A., Marsen, S., ... The EFDA-JET Contributors (2013). First Nitrogen-seeding Experiments in JET with the ITER-like Wall. Journal of Nuclear Materials, 438(Supplement), S258-S261. https://doi.org/10.1016/j.jnucmat.2013.01.041

@article{f73a02dbf31a4451ba6c1dc982db5ae6,

title = "First Nitrogen-seeding Experiments in JET with the ITER-like Wall",

abstract = "In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.",

author = "M. Oberkofler and D. Douai and S. Brezinsek and J.W. Coenen and T. Dittmar and A. Drenik and S.G. Romanelli and E. Joffrin and K. McCormick and M. Brix and G. Calabro and M. Clever and Carine Giroud and U. Kruezi and K. Lawson and Ch. Linsmeier and {Martin Rojo}, A. and A. Meigs and S. Marsen and R. Neu and M. Reinelt and B. Sieglin and G. Sips and M. Stamp and F.L. Tabares and Leena Aho-Mantila and {The EFDA-JET Contributors}",

year = "2013",

doi = "10.1016/j.jnucmat.2013.01.041",

language = "English",

volume = "438",

pages = "S258--S261",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "Supplement",

note = "20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices, PSI-20 ; Conference date: 21-05-2012 Through 25-05-2012",

}

Oberkofler, M, Douai, D, Brezinsek, S, Coenen, JW, Dittmar, T, Drenik, A, Romanelli, SG, Joffrin, E, McCormick, K, Brix, M, Calabro, G, Clever, M, Giroud, C, Kruezi, U, Lawson, K, Linsmeier, C, Martin Rojo, A, Meigs, A, Marsen, S, Neu, R, Reinelt, M, Sieglin, B, Sips, G, Stamp, M, Tabares, FL, Aho-Mantila, L & The EFDA-JET Contributors 2013, 'First Nitrogen-seeding Experiments in JET with the ITER-like Wall', Journal of Nuclear Materials, vol. 438, no. Supplement, pp. S258-S261. https://doi.org/10.1016/j.jnucmat.2013.01.041

TY - JOUR

T1 - First Nitrogen-seeding Experiments in JET with the ITER-like Wall

AU - Oberkofler, M.

AU - Douai, D.

AU - Brezinsek, S.

AU - Coenen, J.W.

AU - Dittmar, T.

AU - Drenik, A.

AU - Romanelli, S.G.

AU - Joffrin, E.

AU - McCormick, K.

AU - Brix, M.

AU - Calabro, G.

AU - Clever, M.

AU - Giroud, Carine

AU - Kruezi, U.

AU - Lawson, K.

AU - Linsmeier, Ch.

AU - Martin Rojo, A.

AU - Meigs, A.

AU - Marsen, S.

AU - Neu, R.

AU - Reinelt, M.

AU - Sieglin, B.

AU - Sips, G.

AU - Stamp, M.

AU - Tabares, F.L.

AU - Aho-Mantila, Leena

AU - The EFDA-JET Contributors

PY - 2013

Y1 - 2013

N2 - In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.

AB - In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.

U2 - 10.1016/j.jnucmat.2013.01.041

DO - 10.1016/j.jnucmat.2013.01.041

M3 - Article in a proceedings journal

SN - 0022-3115

VL - 438

SP - S258-S261

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - Supplement

T2 - 20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices

Y2 - 21 May 2012 through 25 May 2012

ER -

First Nitrogen-seeding Experiments in JET with the ITER-like Wall

Abstract

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