Results 11 to 20 of about 1,815 (190)

Overview of recent results from the ST40 compact high-field spherical tokamak

Nuclear Fusion
ST40 is a compact, high-field ( $B_{\mathrm{T0}}\unicode{x2A7D} 2.1\,\,\,\textrm{T}$ ) spherical tokamak (ST) with a mission to expand the physics and technology basis for the ST route to commercial fusion.
S.A.M. McNamara, A. Alieva, M.S. Anastopoulos Tzanis, O. Asunta, J. Bland, H. Bohlin, P.F. Buxton, C. Colgan, A. Dnestrovskii, E. du Toit, M. Fontana, M. Gemmell, M.P. Gryaznevich, J. Hakosalo, M.R. Hardman, D. Harryman, D. Hoffman, M. Iliasova, S. Janhunen, F. Janky, J.B. Lister, H.F. Lowe, E. Maartensson, C. Marsden, S.Y. Medvedev, S.R. Mirfayzi, M. Moscheni, G. Naylor, V. Nemytov, J. Njau, T. O’Gorman, D. Osin, T. Pyragius, A. Rengle, M. Romanelli, C. Romero, M. Sertoli, V. Shevchenko, J. Sinha, A. Sladkomedova, S. Sridhar, J. Stirling, Y. Takase, P.R. Thomas, J. Varje, E. Vekshina, B. Vincent, H.V. Willett, J. Wood, E. Wooldridge, D. Zakhar, X. Zhang, D. Battaglia, N. Bertelli, P.J. Bonofiglo, L.F. Delgado-Aparicio, V.N. Duarte, N.N. Gorelenkov, M. de Haas, S.M. Kaye, R. Maingi, D. Mueller, M. Ono, M. Podesta, Y. Ren, S. Trieu, E. Delabie, T.K. Gray, B. Lomanowski, E.A. Unterberg, O. Marchuk, the ST40 Team   +71 more
doaj   +4 more sources

H-mode dithering phase studies on ST40 [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023
The dithering H-mode phase, characterized by oscillations, is generally observed at input power values close to the L-H transition power threshold and low plasma collisionalities (low electron density and/or high plasma temperature).
Yasmin Andrew, James Bland, Peter Buxton, Alexei Dnestrovskij, Mikhail Gryaznevich, Eun-jin Kim, Michele Romanelli, Marco Sertoli, Paul Thomas, Jari Varje   +9 more
openaire   +3 more sources

Comprehensive molecular, genomic and phenotypic analysis of a major clone of Enterococcus faecalis MLST ST40 [PDF]

BMC Genomics, 2015
Enterococcus faecalis est un micro-organisme à multiples facettes connu pour agir comme une bactérie commensale intestinale bénéfique. C'est également un agent pathogène nosocomial redouté causant des infections potentiellement mortelles chez les patients hospitalisés.
Melanie Zischka, Carsten Künne, Jochen Blom, Dominique Wobser, Türkân Sakιnç, Kerstin Schmidt‐Hohagen, Piotr Wojciech Dabrowski, Andreas Nitsche, Johannes Hübner, Torsten Hain, Trinad Chakraborty, Burkhard Linke, Alexander Goesmann, Sonja Voget, Rolf Daniel, Dietmar Schomburg, Rüdiger Hauck, Hafez M. Hafez, Petra Tielen, Dieter Jahn, Margrete Solheim, Ewa Sadowy, Jesper Larsen, Lars Jensen, Patricia Ruíz-Garbajosa, Dennis Pérez, Theresa Mikalsen, Jennifer K. Bender, Matthias Steglich, Ulrich Nübel, Wolfgang Witte, Guido Werner   +31 more
core   +15 more sources

Infra-red thermographic inversion in ST40 [PDF]

Infra-red (IR) thermography is an essential diagnostic tool for understanding the edge plasma behavior in fusion devices. In this work, we present a new in-house numerical tool, Functional Analysis of Heat Flux (FAHF), for IR thermographic inversion on Tokamak Energy's spherical tokamak (ST40).
Moscheni, Matteo, Maartensson, Erik, Robinson, Matthew, Marsden, Chris, Rengle, Adrian, Scarabosio, Andrea, Bunting, Patrick, Gray, Travis Kelly, Janhunen, Salomon, Vekshina, Elena, Zhang, Xin   +10 more
core   +4 more sources

Neutral particle analyzer for plasma diagnostics on tokamak ST40

Review of Scientific Instruments
A neutral particle analyzer was designed and implemented for plasma diagnostics on the spherical tokamak ST40. The diagnostic aims to measure both the bulk ion temperature (0.5–10 keV) and the energy distribution of fast ions generated by a neutral beam injection (up to 40 keV).
S. Polosatkin, V. Belykh, A. Rovenskikh
openaire   +4 more sources

Interplay between beam-driven chirping modes and plasma confinement transitions in spherical tokamak ST40

Nuclear Fusion, 2022
Experiments on the high field spherical tokamak ST40 have led to the recent observation of interplay between beam-driven modes of sweeping frequency (chirping modes) and transitions to the enhanced global confinement regime (H-mode) and back to the low ...
J. Bland, J. Varje, N.N. Gorelenkov, M.P. Gryaznevich, S.E. Sharapov, J. Wood, Team The ST40   +6 more
doaj   +2 more sources

Forward modelling of Dα camera view in ST40 informed by experimental data [PDF]

, 2023
Embedding diagnostics in future pilot plants will be a challenging task, because of space- and irradiation-related concerns. Relying on high-fidelity synthetic diagnostics would then be valuable. The 3D Monte-Carlo ray-tracing code CHERAB allows the development of numerous synthetic spectroscopic diagnostics.
Aimetta A., Moscheni M., Singh L., Marsden C., Scarabosio A., Sertoli M., Sladkomedova A., Subba F., Varje J., Wu H.   +9 more
openaire   +3 more sources

Microbiological, genomic and cell-biological analyses of Enterococcus faecalis isolates of MLST type ST40 [PDF]

, 2013
Enterococcus faecalis (E. faecalis) gehören zur natürlichen Flora des tierischen und menschlichen Verdauungstraktes, werden aber auch als Probiotika oder als Starterkulturen in der Lebensmittelfermentation eingesetzt. Als opportunistischer Krankheitserreger ist E.
Zischka, Melanie
openaire   +3 more sources

Preparing for First Diverted Plasma Operation in the ST40 High-Field Spherical Tokamak [PDF]

, 2021
The ST40 tokamak [1], built and operated by Tokamak Energy, has recently been upgraded with upper and lower divertors to enable double null diverted operations with up to 1MA of plasma current and 2MW of neutral beam heating. ST40 is a high field spherical tokamak (BT=3T at R0=0.4m) with a goal to extend the high field spherical tokamak physics basis ...
Romanelli M, McNamara S, Buxton P, Asunta O, Varje J, Wood J, Marsden C, Bland J, Nemytov V, Thomas P, Gryaznevich M, Sertoli M, Vincent B, Sridhar S, Dnestrovsky A, Medvedev S, Drozdov V, Rubino G, Innocente P, Calabro' G, Scarpari M, Fanelli P, Giorgetti F, Lombroni R, Kaye S, Diallo A, Guttenfelder W, Barnes M, Zhang Y   +28 more
openaire   +2 more sources

Inferring the scrape-off layer heat flux width in a divertor with a low degree of axisymmetry [PDF]

Nuclear Materials and Energy
Plasma facing components (PFCs) in the next generation of tokamak devices will operate in challenging environments, with heat loads predicted to exceed 10 MW/m2. The magnitude of these heat loads is set by the width of the channel, the ‘scrape-off layer’
C. Marsden, X. Zhang, M. Moscheni, T.K. Gray, E. Vekshina, A. Rengle, A. Scarabosio, M. Sertoli, M. Romanelli   +8 more
doaj   +3 more sources