57 citations · 146 across the 15 of their papers we have counts for
14 papers · 1 filter
FIREWALL: A surrogate model for the rapid assessment of tokamak wall loading and melting by runaway electrons
Victor Johan Svensson, Tommaso Rizzi, Svetlana Ratynskaia +4
Runaway electron (RE) beams generated during tokamak disruptions can deposit highly localized heat loads on plasma-facing components, posing a serious risk of melting and damage. M…
Runaway electron induced explosions of graphite; modeling versus controlled DIII-D experiments
T. Rizzi, A. Kavroulakis, S. Ratynskaia +10
The state-of-the-art concerning the modeling of the thermomechanical response of graphite to runaway electron (RE) impact is based on one-way coupled linear thermoelasticity combin…
Thermal modeling of runaway electron induced damage in the SPARC tokamak
T. Rizzi, K. Paschalidis, S. Ratynskaia +6
The integrity of plasma-facing components (PFCs) in tokamaks is critically challenged by transient events such as runaway electron (RE) impacts. We report the first systematic anal…
Thermal resilience of the ITER tungsten first wall to runaway electron impact
S. Ratynskaia, K. Paschalidis, T. Rizzi +7
The fast volumetric deposition of multi-MeV high current runaway electron (RE) beams constitutes the most critical issue for the ITER tungsten (W) first wall (FW) longevity. Such r…
Modeling of runaway electron induced damage on boron-nitride tiles in WEST
Tommaso Rizzi, Svetlana Ratynskaia, Panagiotis Tolias +9
The runaway electron (RE) - induced damage on boron nitride (BN) tiles mounted on the inner bumpers of the WEST tokamak is modeled employing available empirical input and experimen…
Wall damage due to oblique high velocity dust impacts
Panagiotis Tolias, Marco De Angeli, Dario Ripamonti +3
Runaway electron termination on plasma facing components can trigger material explosions that are accompanied by the expulsion of fast solid debris. Due to the large kinetic energi…
Runaway electron-induced plasma facing component damage in tokamaks
S. Ratynskaia, M. Hoelzl, E. Nardon +31
This Roadmap article addresses the critical and multifaceted challenge of plasma-facing component (PFC) damage caused by runaway electrons (REs) in tokamaks, a phenomenon that pose…
Impact of repetitive ELM transients on ITER divertor tungsten monoblock top surfaces
K. Paschalidis, S. Ratynskaia, P. Tolias +1
Owing to the high stored energy of ITER plasmas, the heat pulses due to uncontrolled Type I edge localized modes (ELMs) can be sufficient to melt the top surface of several poloida…
The MEMENTO code for modelling of macroscopic melt motion in fusion devices
K. Paschalidis, F. Lucco Castello, S. Ratynskaia +2
The MEMENTO (MEtallic Melt Evolution in Next-step TOkamaks) code is a new numerical implementation of the physics model originally developed for the MEMOS-U code with the objective…
Wall cratering upon high velocity normal dust impact
Panagiotis Tolias, Marco De Angeli, Dario Ripamonti +4
Dust-wall high speed impacts, triggered by the termination of runaway electrons on plasma facing components, constitute a source of erosion. Normal high velocity mechanical impacts…
Evidence for high-velocity solid dust generation induced by runaway electron impact in FTU
M. De Angeli, P. Tolias, S. Ratynskaia +11
Post-mortem and in-situ evidence is presented in favor of the generation of high-velocity solid dust during the explosion-like interaction of runaway electrons with metallic plasma…
Dust remobilization in fusion plasmas under steady state conditions
P. Tolias, S. Ratynskaia, M. De Angeli +10
The first combined experimental and theoretical studies of dust remobilization by plasma forces are reported. The main theoretical aspects of remobilization in fusion devices under…
Scale-free vortex cascade emerging from random forcing in a strongly coupled system
Kristoffer Rypdal, Boris Kozelov, Svetlana Ratynskaia +2
The notions of self-organised criticality (SOC) and turbulence are traditionally considered to be applicable to disjoint classes of phenomena. Nevertheless, scale-free burst statis…
Measurement of the Ion Drag Force in a Complex DC-Plasma Using the PK-4 Experiment
M. H. Thoma, H. Hoefner, S. A. Khrapak +8
The force on a microparticle in a complex plasma by streaming ions, the so-called ion drag force, is not well known. However, it is important for the understanding of interesting p…