Estimate of 3D power wall loads due to Neutral Beam Injection in EU DEMO ramp-up phase

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Vincenzi, P. Varje, J. Agostinetti, P. Artaud, J. F. Bolzonella, T. Kurki-Suonio, T. Mattei, M. Sonato, P. Vallar, M. 2019-01-14T09:19:15Z 2019-01-14T09:19:15Z 2019-01-01
dc.identifier.citation Vincenzi , P , Varje , J , Agostinetti , P , Artaud , J F , Bolzonella , T , Kurki-Suonio , T , Mattei , M , Sonato , P & Vallar , M 2019 , ' Estimate of 3D power wall loads due to Neutral Beam Injection in EU DEMO ramp-up phase ' Nuclear Materials and Energy , vol. 18 , pp. 188-192 . DOI: 10.1016/j.nme.2018.12.031 en
dc.identifier.issn 2352-1791
dc.identifier.other PURE UUID: 199dbc81-3dbc-42e2-9915-312923ace871
dc.identifier.other PURE ITEMURL:
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dc.description | openaire: EC/H2020/633053/EU//EUROfusion
dc.description.abstract Heating and current drive systems such as high energy Neutral Beam Injection (NBI) are being considered for pulsed EU DEMO (“DEMO1”) pre-conceptual design. Their aim is to provide auxiliary power, not only during flat-top, but also during transient phases (i.e. plasma current ramp-up and ramp-down). In this work, NBI fast particle power loads on DEMO1 first wall, due to shine-through and orbit losses, are calculated for the diverted plasma ramp-up phase. Numerical simulations are performed using BBNBI and ASCOT Monte Carlo codes. The simulations have been done using a complete 3D wall geometry, and implementing the latest DEMO NBI design, which foresees NBI at 800 keV particle energy. Location and power density of NBI-related power loads at different ramp-up time steps are evaluated and compared with the maximum tolerable heat flux taken from ITER case. Since NBI shine-through losses (dominant during low density phases) depend mainly on the beam energy, plasma density and volume, DEMO has a more favourable situation than ITER, enlarging NBI operational window. Using ITER criteria, DEMO NBI at full energy and power could be switched on during ramp-up at <ne> ~ 1.3 × 1019 m-3. This increases the appeal of neutral beam injectors as auxiliary power systems for DEMO. en
dc.format.extent 5
dc.format.extent 188-192
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/H2020/633053/EU//EUROfusion
dc.relation.ispartofseries Nuclear Materials and Energy en
dc.relation.ispartofseries Volume 18 en
dc.rights openAccess en
dc.subject.other Nuclear and High Energy Physics en
dc.subject.other Materials Science (miscellaneous) en
dc.subject.other Nuclear Energy and Engineering en
dc.subject.other 114 Physical sciences en
dc.title Estimate of 3D power wall loads due to Neutral Beam Injection in EU DEMO ramp-up phase en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department CNR
dc.contributor.department Department of Applied Physics
dc.contributor.department CEA
dc.contributor.department Fusion and Plasma Physics
dc.contributor.department University of Campania Luigi Vanvitelli
dc.subject.keyword Nuclear and High Energy Physics
dc.subject.keyword Materials Science (miscellaneous)
dc.subject.keyword Nuclear Energy and Engineering
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201901141098
dc.identifier.doi 10.1016/j.nme.2018.12.031
dc.type.version publishedVersion

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