H Meyer the STEP Team
The programme to design plasma scenarios for the Spherical Tokamak for Energy Production (STEP), a reactor concept aiming at net electricity production, seeks to exploit the inherent advantages of the spherical tokamak (ST) while making conservative assumptions about plasma performance. This approach is motivated by the large gap between present-da…
PreprintP Methven
This paper sets the context for those that follow in this Special Edition by describing why STEP (Spherical Tokamak for Energy Production) has been launched, what it aims to achieve (benefits) and, principally, how the whole programme will be delivered (strategy). The paper draws on work on major project delivery and organisation design and ap…
PreprintC. Hill Dipti K. Heinola A. Dubois N. Sisourat A. Taoutioui H. Agueny K. Tokesi I. Ziaeian C. Illescas A. Jorge L. Mendez A. S. Kadyrov N. W. Antonio A. M. Kotian T. Kirchner A. C. K. Leung J. Ko J. K. Lee8 O. Marchuk M. G. O'Mullane E. Litherland-Smith G. I. Pokol O. Asztalos P. Balazs Y. Wu C. C. Jia L. Liu J. G. Wang
The injection of energetic neutral particles into the plasma of magnetic confinement fusion reactors is a widely-accepted method for heating such plasmas; various types of neutral beam are also used for diagnostic purposes. Accurate atomic data are required to properly model beam penetration into the plasma and to interpret photoemission spectra…
PublishedO. El Atwani H. T. Vo M. A. Tunes C. Lee A. Alvarado N. Krienke J. D. Poplawsky A. A. Kohnert J. Gigax W.-Y. Chen M. Li Y. Q. Wang J. S. Wróbel D. Nguyen-Manh J. K. S. Baldwin O. U. Tukac E. Aydogan S. Fensin E. Martinez
In the quest of new materials that can withstand severe irradiation and mechanical extremes for advanced applications (e.g. fission & fusion reactors, space applications, etc.), design, prediction and control of advanced materials beyond current material designs become paramount. Here, through a combined experimental and simulation methodol…
PublishedAndrew M. Alvarado Chanho Lee Jan S. Wróbel Damian Sobieraj Duc Nguyen-Manh Jonathan D. Poplawsky Saryu Jindal Fensin Enrique Martinez Osman El-Atwani
Short-range order (SRO) in multicomponent concentrated alloys affects their mechanical response. Hence, is paramount to understand how composition modifies the chemical ordering in the system to design materials with optimal properties. We present here a methodology to predict the SRO and thermodynamic properties in chemically complex systems and a…
PurchaseJ. Hobirk C. D. Challis A. Kappatou E. Lerche D. Keeling D. King S. Aleiferis E. Alessi F. Auriemma M. Baruzzo E. Belonohy I. S. Carvalho P. Carvalho F. J. Casson A. Chomiczewska J. Citrin I. H. Coffey D. Douai E. Delabie B. Eriksson J. Eriksson O. Ficker A. R. Field M. Fontana L. Frassinetti D. Frigione D. Gallart J. Garcia M. Gelfusa L. Giacomelli E. Giovannozzi C. Giroud M. Goniche C. Ham N. Hawkes R. Henriques J. Hillesheim A. Ho I. Ivanova-Stanik P. Jacquet F. Jaulmes E. Joffrin H. T. Kim V. Kiptily K. Kirov D. Kos E. Kowalska-Strzeciwilk H. Kumpulainen K. Lawson M. Lennholm X. Litaudon P. Lomas E. de la Luna C. Maggi J. Mailloux M. Mantsinen M. Maslov G. Matthews S. Menmuir A. Milocco K. McClements I. G. Miron S. Nowak F. Orsitto L. Piron G. Pucella E. Peluso C. Perez von Thun E. Rachlew C. Reux F. Rimini A. Sahlberg S. Saarelma P. A. Schneider M. Sertoli S. Sharapov S. Silburn A. Sips P. Siren E. Solano Z. Stancar C. Stuart H. Sun D. Valcarcel M. Valisa G. Verdoolaege N. Wendler D. Weston M. Zerbini
The JET hybrid scenario has been developed from low plasma current carbon wall discharges to the record-breaking Deuterium-Tritium plasmas obtained in 2021 with the ITER-like Be/W wall. The development started in pure Deuterium with refinement of the plasma current, and toroidal magnetic field choices and succeeded in solving the heat load challeng…
PublishedWei Wang Ruiqiang Zhang Amir A Shirzardi Daniel S Balint Lee Aucott Jun Jiang
Thermally-induced cracking typically occurs during the cooling stage of various manufacturing processes, and is commonly seen in multiphase or the joints of dissimilar materials due to mismatch in their thermo-mechanical properties, such as thermal expansion, elastic-plastic deformation and, in some cases, phase transformation. However, the underly…
Preprint PublishedDaniel R. Mason Duc Nguyen-Manh Victor W. Lindblad Fredric G. Granberg Mikhail Yu. Lavrentiev
We describe the parameterization of a tungsten-hydrogen empirical potential designed for use with large-scale molecular dynamics simulations of highly irradiated tungsten containing hydrogen isotope atoms, and report test results. Particular attention has been paid to getting good elastic properties, including the relaxation volumes of small def…
PublishedX. Litaudon U. Fantz R. Villari V. Toigo M.- H. Aumeunier J.- L. Autran P. Batistoni E. Belonohy S. Bradnam M. Cecchetto A. Colangeli F. Dacquait M. Dentan M. De Pietri J. Eriksson M. Fabbri G. Falchetto L. Figini J. Figueiredo D. Flammini N. Fonnesu L. Frassinetti R. Garcia-Alia M. Garcia-Munoz Z. Ghani J. Gonzalez-Martin E. Grelier L. Di Grazia B. Grove C. L. Grove A. Gusarov A. Hjalmarsson O. Hyvärinen V. Ioannou-Sougleridis L. Jones H.- T. Kim M. Kłosowski M. Kocan B. Kos L. Kos D. Kotnik E. Laszynska D. Leichtle I. Lengar E. Leon A. J. Lopez-Revelles S. Loreti M. Loughlin K.G. Mcclements G. Mariano M. Mattei K. Mergia J. Mietelski R. Mitteau S. Moindjie D. Munteanu R. Naish C. Nobs L. W. Packer S. Pamela R. Pampin A. Pau A. Peacock E. Peluso Y. Peneliau J. Peric V. Radulović F. Rimini D. Ricci L. Sanchis Sanchez P. Sauvan M.I. Savva A. Snicker L. Snoj I. E. Stamatelatos Ž. Štancar N. Terranova T. Vasilopoulou R. Vila J. Waterhouse A. Žohar The Nbtf Team The Jet Contributors The Eurofusion Tokamak Exploitation Team
ITER is of key importance in the European fusion roadmap as it aims to prove the scientific and technological feasibility of fusion as a future energy source. The EUROfusion consortium of labs is contributing to the preparation of ITER scientific exploitation and operation and aspires to exploit ITER outcomes in view of DEMO. The paper provides …
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