Impact of W on scenario simulations for ITER

ITPA Integrated Operating Scenarios Topical Group; ASDEX Upgrade Team; JET Contributors

doi:10.1088/0029-5515/55/6/063031

Impact of W on scenario simulations for ITER

ITPA Integrated Operating Scenarios Topical Group
, ASDEX Upgrade Team
, JET Contributors

Laboratory for Plasma Physics

FOM-Instituut voor Plasmafysica 'Rijnhuizen'
Kurchatov Institute
Max-Planck-Institut für Plasmaphysik
European Commission
Associazione EURATOM-ENEA sulla Fusione
Culham Centre for Fusion Energy

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

11 Zitate (Scopus)

Abstract

In preparation of ITER operation, large machines have replaced their wall and divertor material to W (ASDEX Upgrade) or a combination of Be for the wall and W for the divertor (JET). Operation in these machines has shown that the influx of W can have a significant impact on the discharge evolution, which has made modelling of this impact for ITER an urgent task. This paper reports on such modelling efforts. Maximum tolerable W concentrations have been determined for various scenarios, both for the current ramp-up and flat-top phase. Results of two independent methods are presented, based on the codes ZIMPUR plus ASTRA and CRONOS, respectively. Both methods have been tested and benchmarked against ITER-like I_p RU experiments at JET. It is found that W significantly disturbs the discharge evolution when the W concentration approaches ∼10^-4; this critical level varies somewhat between scenarios.

Originalsprache	Englisch
Aufsatznummer	063031
Fachzeitschrift	Nuclear Fusion
Jahrgang	55
Ausgabenummer	6
DOIs	https://doi.org/10.1088/0029-5515/55/6/063031
Publikationsstatus	Veröffentlicht - 1 Juni 2015

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10.1088/0029-5515/55/6/063031

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title = "Impact of W on scenario simulations for ITER",

abstract = "In preparation of ITER operation, large machines have replaced their wall and divertor material to W (ASDEX Upgrade) or a combination of Be for the wall and W for the divertor (JET). Operation in these machines has shown that the influx of W can have a significant impact on the discharge evolution, which has made modelling of this impact for ITER an urgent task. This paper reports on such modelling efforts. Maximum tolerable W concentrations have been determined for various scenarios, both for the current ramp-up and flat-top phase. Results of two independent methods are presented, based on the codes ZIMPUR plus ASTRA and CRONOS, respectively. Both methods have been tested and benchmarked against ITER-like Ip RU experiments at JET. It is found that W significantly disturbs the discharge evolution when the W concentration approaches ∼10-4; this critical level varies somewhat between scenarios.",

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author = "Hogeweij, \{G. M.D.\} and V. Leonov and J. Schweinzer and Sips, \{A. C.C.\} and C. Angioni and G. Calabr{\`o} and R. Dux and A. Kallenbach and E. Lerche and C. Maggi and Th P{\"u}tterich and \{ITPA Integrated Operating Scenarios Topical Group\} and \{ASDEX Upgrade Team\} and \{JET Contributors\}",

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doi = "10.1088/0029-5515/55/6/063031",

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AU - Hogeweij, G. M.D.

AU - Leonov, V.

AU - Schweinzer, J.

AU - Sips, A. C.C.

AU - Angioni, C.

AU - Calabrò, G.

AU - Dux, R.

AU - Kallenbach, A.

AU - Lerche, E.

AU - Maggi, C.

AU - Pütterich, Th

AU - ITPA Integrated Operating Scenarios Topical Group

AU - ASDEX Upgrade Team

AU - JET Contributors

PY - 2015/6/1

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N2 - In preparation of ITER operation, large machines have replaced their wall and divertor material to W (ASDEX Upgrade) or a combination of Be for the wall and W for the divertor (JET). Operation in these machines has shown that the influx of W can have a significant impact on the discharge evolution, which has made modelling of this impact for ITER an urgent task. This paper reports on such modelling efforts. Maximum tolerable W concentrations have been determined for various scenarios, both for the current ramp-up and flat-top phase. Results of two independent methods are presented, based on the codes ZIMPUR plus ASTRA and CRONOS, respectively. Both methods have been tested and benchmarked against ITER-like Ip RU experiments at JET. It is found that W significantly disturbs the discharge evolution when the W concentration approaches ∼10-4; this critical level varies somewhat between scenarios.

AB - In preparation of ITER operation, large machines have replaced their wall and divertor material to W (ASDEX Upgrade) or a combination of Be for the wall and W for the divertor (JET). Operation in these machines has shown that the influx of W can have a significant impact on the discharge evolution, which has made modelling of this impact for ITER an urgent task. This paper reports on such modelling efforts. Maximum tolerable W concentrations have been determined for various scenarios, both for the current ramp-up and flat-top phase. Results of two independent methods are presented, based on the codes ZIMPUR plus ASTRA and CRONOS, respectively. Both methods have been tested and benchmarked against ITER-like Ip RU experiments at JET. It is found that W significantly disturbs the discharge evolution when the W concentration approaches ∼10-4; this critical level varies somewhat between scenarios.

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Impact of W on scenario simulations for ITER

Abstract

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