Search Results - "Angioni, C."

Mean and oscillating plasma flows and turbulence interactions across the L-H confinement transition by Conway, G D, Angioni, C, Ryter, F, Sauter, P, Vicente, J

“…A complex interaction between turbulence driven E × B zonal flow oscillations, i.e., geodesic acoustic modes (GAMs), the turbulence, and mean equilibrium flows…”
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Toroidal momentum pinch velocity due to the coriolis drift effect on small scale instabilities in a toroidal plasma by Peeters, A G, Angioni, C, Strintzi, D

“…In this Letter, the influence of the "Coriolis drift" on small scale instabilities in toroidal plasmas is shown to generate a toroidal momentum pinch velocity…”
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New High-Confinement Regime with Fast Ions in the Core of Fusion Plasmas by Di Siena, A., Bilato, R., Görler, T., Navarro, A. Bañón, Poli, E., Bobkov, V., Jarema, D., Fable, E., Angioni, C., Kazakov, Ye. O., Ochoukov, R., Schneider, P., Weiland, M., Jenko, F., the ASDEX Upgrade Team

“…The key result of the present work is the theoretical prediction and observation of the formation of a new type of transport barrier in fusion plasmas, called…”
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Intrinsic toroidal rotation, density peaking, and turbulence regimes in the core of tokamak plasmas by Angioni, C, McDermott, R M, Casson, F J, Fable, E, Bottino, A, Dux, R, Fischer, R, Podoba, Y, Pütterich, T, Ryter, F, Viezzer, E

“…Observations in the ASDEX Upgrade tokamak show a correlation between the gradient of the intrinsic toroidal rotation profile and the logarithmic gradient of…”
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Comparison of core Ar17+ and Mo32+ toroidal rotation in C-Mod plasmas by Rice, J.E., Angioni, C., Cao, N.M., Reinke, M.L.

“…Core (r/a  < 0.5) toroidal rotation from argon (Ar17+, 40 AMU) and molybdenum (Mo32+, 96 AMU) ions has been compared in C-Mod tokamak plasmas over a wide range…”
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Integrated modelling of tungsten accumulation control with wave heating: validation in ASDEX Upgrade and predictions for ITER by Fajardo, D., Angioni, C., Fable, E., Tardini, G., Bilato, R., Luda, T., McDermott, R.M., Samoylov, O.

“…In present-day fusion devices, central wave heating is crucial to avoid core tungsten (W) accumulation. In this work, we present an integrated modelling…”
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Decoupling beam power and beam energy on ASDEX Upgrade NBI with an in-situ variable extraction gap system by Hopf, C., Harder, N. den, Heinemann, B., Angioni, C., Plank, U., Weiland, M.

“…Abstract In early 2022 one source of ASDEX Upgrade’s (AUG) neutral beam injector 2 was equipped with a first-of-its-kind beam extraction grid system with…”
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Full-radius integrated modelling of ASDEX Upgrade L-modes including impurity transport and radiation by Fajardo, D., Angioni, C., Dux, R., Fable, E., Plank, U., Samoylov, O., Tardini, G.

“…Abstract An integrated framework that demonstrates multi-species, multi-channel modelling capabilities for the prediction of impurity density profiles and…”
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Plasma physics for fusion reactor system codes: Framework and model code by Fable, E., Angioni, C., Siccinio, M., Zohm, H.

“…Design of a fusion reactor power plant requires putting together physics elements (plasma physics) and engineering elements (plant characteristics). System…”
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Determining the access to H–mode in the ITER pre–fusion and fusion power operation phases at low plasma current with full–radius TGLF–SAT2 simulations of L–mode plasmas by Angioni, C., Citrin, J., Loarte, A., Polevoi, A.R., Kim, S.H., Fable, E., Tardini, G.

“…Abstract The pre–fusion power operation 1 phase of ITER is planned to be characterized by electron cyclotron resonance heating only. Under the assumption that…”
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Peripheral temperature gradient screening of high-Z impurities in optimised ‘hybrid’ scenario H-mode plasmas in JET-ILW by Field, A.R., Casson, F.J., Fajardo, D., Angioni, C., Challis, C.D., Hobirk, J., Kappatou, A., Kim, Hyun-Tae, Lerche, E., Loarte, A., Mailloux, J.

“…Abstract Screening of high-Z (W) impurities from the confined plasma by the temperature gradient at the plasma periphery of fusion-grade H-mode plasmas has…”
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The dependence of tokamak L-mode confinement on magnetic field and plasma size, from a magnetic field scan experiment at ASDEX Upgrade to full-radius integrated modelling and fusion reactor predictions by Angioni, C., Bonanomi, N., Fable, E., Schneider, P.A., Tardini, G., Luda, T., Staebler, G.M.

“…Abstract The dependence of the confinement of a tokamak plasma in L-mode on the magnetic field is explored with a set of dedicated experiments in ASDEX Upgrade…”
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Direction of impurity pinch and auxiliary heating in tokamak plasmas by Angioni, C, Peeters, A G

“…A mechanism of particle pinch for trace impurities in tokamak plasmas, arising from the effect of parallel velocity fluctuations in the presence of a turbulent…”
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Combined action of phase-mixing and Landau damping causing strong decay of geodesic acoustic modes by Palermo, F., Biancalani, A., Angioni, C., Zonca, F., Bottino, A.

“…We report evidence of a new mechanism able to damp very efficiently geodesic acoustic mode (GAM) in the presence of a nonuniform temperature profile in a…”
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Comparison of momentum transport in matched hydrogen and deuterium H-mode plasmas in ASDEX Upgrade by Zimmermann, C.F.B., McDermott, R.M., Angioni, C., Duval, B.P., Dux, R., Fable, E., Salmi, A., Stroth, U., Tala, T., Tardini, G., Pütterich, T.

“…Abstract Advanced momentum transport analysis is used to study matched hydrogen (H) and deuterium (D) plasmas in the core of ASDEX Upgrade. The aim is to…”
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Plasma profile reconstruction supported by kinetic modeling by Bergmann, M., Fischer, R., Angioni, C., Höfler, K., Molina Cabrera, P., Görler, T., Luda, T., Bilato, R., Tardini, G., Jenko, F.

“…Abstract Combining the analysis of multiple diagnostics and well-chosen prior information in the framework of Bayesian probability theory, the Integrated Data…”
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A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear by Mantica, P, Angioni, C, Challis, C, Colyer, G, Frassinetti, L, Hawkes, N, Johnson, T, Tsalas, M, deVries, P C, Weiland, J, Baiocchi, B, Beurskens, M N A, Figueiredo, A C A, Giroud, C, Hobirk, J, Joffrin, E, Lerche, E, Naulin, V, Peeters, A G, Salmi, A, Sozzi, C, Strintzi, D, Staebler, G, Tala, T, Van Eester, D, Versloot, T

“…New transport experiments on JET indicate that ion stiffness mitigation in the core of a rotating plasma, as described by Mantica et al. [Phys. Rev. Lett. 102,…”
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Local transport dynamics of cold pulses in tokamak plasmas by Rodriguez-Fernandez, P., Angioni, C., White, A. E.

“…For over two decades, our fundamental understanding of energy transport dynamics in the core of tokamak plasmas had been challenged by the striking observation…”
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Dynamic edge transport investigations at ASDEX Upgrade using gas puff modulation by Schuster, C.U., Wolfrum, E., Görler, T., Fable, E., Fischer, R., Griener, M., Tal, B., Angioni, C., Manz, P., Stroth, U.

“…Abstract Gas puff modulation experiments are performed at ASDEX Upgrade in L-mode, EDA H-mode and quasi-continuous exhaust discharges. Plasma density and…”
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Experimental determination of the three components of toroidal momentum transport in the core of a tokamak plasma by Zimmermann, C.F.B., McDermott, R.M., Angioni, C., Duval, B.P., Dux, R., Fable, E., Luda, T., Salmi, A., Stroth, U., Tala, T., Tardini, G., Pütterich, T.

“…Abstract A new approach to infer the momentum transport in tokamak core plasmas via perturbation experiments is presented. For the first time, the analysis…”
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