86 citations · 175 across the 8 of their papers we have counts for
8 papers
How accurate are flux-tube (local) gyrokinetic codes in modeling energetic particle effects on core turbulence?
A. Di Siena, T. Hayward-Schneider, P. Mantica +8
Flux-tube gyrokinetic codes are widely used to simulate drift-wave turbulence in magnetic confinement devices. While a large number of studies show that flux-tube codes provide an…
Predictions of improved confinement in SPARC via energetic particle turbulence stabilization
A. Di Siena, P. Rodriguez-Fernandez, N. T. Howard +8
The recent progress in high-temperature superconductor technologies has led to the design and construction of SPARC, a compact tokamak device expected to reach plasma breakeven wit…
Core transport barriers induced by fast ions in global gyrokinetic GENE simulations
A. Di Siena, R. Bilato, T. Goerler +4
A novel type of internal transport barrier (ITB) called F-ATB (fast ion-induced anomalous transport barrier) has been recently observed in state-of-the-art global gyrokinetic simul…
New high-confinement regime with fast ions in the core of fusion plasmas
A. Di Siena, R. Bilato, T. Görler +12
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 F-ATB (fast ion-induc…
Moment-Preserving and Mesh-Adaptive Reweighting Method for Rare-Event Sampling in Monte-Carlo Algorithms
C. U. Schuster, T. Johnson, G. Papp +4
We present novel roulette schemes for rare-event sampling that are both structure-preserving and unbiased. The boundaries where Monte Carlo markers are split and deleted are placed…
Non-Maxwellian fast particle effects in gyrokinetic GENE simulations
A. Di Siena, T. Görler, H. Doerk +6
Fast ions have recently been found to significantly impact and partially suppress plasma turbulence both in experimental and numerical studies in a number of scenarios. Understandi…
A new ICRF scenario for bulk ion heating in D-T plasmas: How to utilize intrinsic impurities in fusion devices in our favour
Y. O. Kazakov, J. Ongena, D. Van Eester +5
A fusion reactor requires plasma pre-heating before the rate of deuterium-tritium fusion reactions becomes significant. In ITER, radiofrequency (RF) heating of 3He ions, additional…
Multi-mode Alfvénic Fast Particle Transport and Losses: Numerical vs. Experimental Observation
Mirjam Schneller, Philipp Lauber, Roberto Bilato +4
In many discharges at ASDEX Upgrade fast particle losses can be observed due to Alfvénic gap modes, Reversed Shear Alfvén Eigenmodes or core-localized Beta Alfvén Eigenmodes. For t…