Zobrazeno 1 - 10
of 578
pro vyhledávání: '"Kennedy, Daniel P."'
Autor:
Sun, Haomin, Ball, Justin, Brunner, Stephan, Field, Anthony, Patel, Bhavin, Kennedy, Daniel, Roach, Colin, Cruz-Zabala, Diego Jose, Del Pozo, Fernando Puentes, Viezzer, Eleonora, Munoz, Manuel Garcia
Based on the analysis of a large number of high-fidelity nonlinear gyrokinetic simulations, we propose a novel strategy to improve confinement in tokamak plasmas by combining up-down asymmetric flux surface shaping with the Low Momentum Diffusivity (
Externí odkaz:
http://arxiv.org/abs/2410.10555
Autor:
Sun, Haomin, Ball, Justin, Brunner, Stephan, Field, Anthony, Patel, Bhavin, Balestri, Alessandro, Kennedy, Daniel, Roach, Colin, Cruz-Zabala, Diego Jose, Del Pozo, Fernando Puentes, Viezzer, Eleonora, Munoz, Manuel Garcia
Strong $E\times B$ plasma flow shear is beneficial for reducing turbulent transport. However, traditional methods of driving flow shear do not scale well to large devices such as future fusion power plants. In this paper, we use a large number of non
Externí odkaz:
http://arxiv.org/abs/2408.12331
Autor:
Hornsby, William, Gray, Ander, Buchanan, James, Patel, Bhavin, Kennedy, Daniel, Casson, Francis, Roach, Colin, Lykkegaard, Mikkel, Nguyen, Huy, Papadimas, Nikolaos, Fourcin, Ben, Hart, Jordan
Spherical tokamaks (STs) have many desirable features that make them an attractive choice for a future fusion power plant. Power plant viability is intrinsically related to plasma heat and particle confinement and this is often determined by the leve
Externí odkaz:
http://arxiv.org/abs/2309.09785
Autor:
Kennedy, Daniel, Giacomin, Maurizio, Casson, Francis J, Dickinson, David, Hornsby, William A, Patel, Bhavin S, Roach, Colin M
Publikováno v:
Nucl. Fusion 63 126061 (2023)
We present herein the results of a linear gyrokinetic analysis of electromagnetic microinstabilites in the conceptual high-$\beta$, reactor-scale, tight-aspect-ratio tokamak STEP (Spherical Tokamak for Energy Production, https://step.ukaea.uk). We ex
Externí odkaz:
http://arxiv.org/abs/2307.01670
Autor:
Giacomin, Maurizio, Kennedy, Daniel, Casson, Francis J, J., Ajay C., Dickinson, David, Patel, Bhavin S., Roach, Colin M.
Publikováno v:
Plasma Phys. Control. Fusion 2024
In this work, we present first-of-their-kind nonlinear local gyrokinetic simulations of electromagnetic turbulence at mid-radius in the burning plasma phase of the conceptual high-$\beta$, reactor-scale, tight-aspect-ratio tokamak STEP (Spherical Tok
Externí odkaz:
http://arxiv.org/abs/2307.01669
The ability to compare between individuals or organisations fairly is important for the development of robust and meaningful quantitative benchmarks. To make fair comparisons, contextual factors must be taken into account, and comparisons should only
Externí odkaz:
http://arxiv.org/abs/2011.08407
Peer-grouping is used in many sectors for organisational learning, policy implementation, and benchmarking. Clustering provides a statistical, data-driven method for constructing meaningful peer groups, but peer groups must be compatible with busines
Externí odkaz:
http://arxiv.org/abs/2011.08405
Autor:
Kennedy, Daniel, Helander, Per
The behaviour of a collisional plasma which is optically thin to cyclotron radiation is considered, and the distribution functions accessible to it on the various timescales in the system are calculated. Particular attention is paid to the limit in w
Externí odkaz:
http://arxiv.org/abs/2006.09246
Autor:
Kennedy, Daniel, Helander, Per
The behaviour of a strongly-magnetized collisional electron-positron plasma which is optically thin to cyclotron radiation is considered, and the distribution functions accessible to it on the various timescales in the system are calculated. Particul
Externí odkaz:
http://arxiv.org/abs/2006.09248
The weather layers of the gas giant planets, Jupiter and Saturn, comprise the shallow atmospheric layers that are influenced energetically by a combination of incoming solar radiation and localised latent heating of condensates, as well as by upwelli
Externí odkaz:
http://arxiv.org/abs/2004.02815