U. Sheikh

Synthetic Diagnostic Modeling for Plasma Tomography: Geometry Matrix Computation Methods and Impact of Model Accuracy

D. Hamm, G. Partesotti, C. Theiler, U. Sheikh

Tomographic emissivity reconstruction from plasma diagnostics data relies on a synthetic model mapping the plasma emissivity to the measured signals. The model, referred to as a geometry matrix in the plasma imaging community, is often built using the line-of-sight (LoS) approximation. This …

ch (code pays fourni par la source)

A procedure for rule extraction from a Self-Organising plasma disruption predictor for JET

Samuele Setzu, Enrico Aymerich, Alessandra Fanni, Fabio Pisano et autres

In a previous paper, a Self-Organizing Map had proven to be able to identify the regions of the plasma operative space characterizing the pre-disruptive phase at JET without relying on any a priori information. One of the strengths of this disruption predictor …

it, gb, pt, fr, de, es, be, se, hu, lv, gr, us, sk, pl, cz (code pays fourni par la source)

Variability of MHD instabilities in benign termination of high-current runaway electron beams in the JET and DIII-D tokamaks

C. F. B. Zimmermann, Carlos A. Paz-Soldan, George Su, C. Reux et autres

Abstract Benign termination, in which magnetohydrodynamic (MHD) instabilities deconfine runaway electrons (REs) following hydrogenic injections, is a promising strategy for mitigating dangerous RE loads after disruptions. Recent experiments on the Joint European Torus (JET) have explored this scenario at higher pre-disruptive plasma …

us, fr, cz, gb, de, ch (code pays fourni par la source)

Runaway electron-induced plasma facing component damage in tokamaks

S. Ratynskaia, M. Hoelzl, E. Nardon, P. Aleynikov et autres

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 poses a significant threat to the viability and longevity of future fusion reactors such as ITER and DEMO. …

Milestone in predicting core plasma turbulence: successful multi-channel validation of the gyrokinetic code GENE

Klara Höfler, C. Lechte, Pedro Molina, Michael Bergmann et autres

On the basis of several recent breakthroughs in fusion research, many activities have been launched around the world to develop fusion power plants on the fastest possible time scale. In this context, high-fidelity simulations of the plasma behavior on large supercomputers provide …

de, us, ch, fr, it, fi, pt, nl, gb, pl, at, es, hu, ua (code pays fourni par la source)

Observation of magnetic islands in tokamak plasmas during the suppression of edge-localized modes

Matthias Willensdorfer, V. Mitterauer, M. Hoelzl, Mark R. Cianciosa et autres

Abstract In tokamaks, a leading platform for fusion energy, periodic filamentary plasma eruptions known as edge-localized modes occur in plasmas with high-energy confinement and steep pressure profiles at the plasma edge. These edge-localized modes could damage the tokamak wall but can be …

de, us, fr, pt, it, fi, nl, gb, pl, ch, at, es, hu, ua (code pays fourni par la source)

Overview of T and D–T results in JET with ITER-like wall

Domenico Abate, N. Abid, Paulo Abreu, O. Adabonyan et autres

Abstract In 2021 JET exploited its unique capabilities to operate with T and D–T fuel with an ITER-like Be/W wall (JET-ILW). This second major JET D–T campaign (DTE2), after DTE1 in 1997, represented the culmination of a series of JET enhancements—new fusion …

gb, fr (code pays fourni par la source)

Enhanced performance in fusion plasmas through turbulence suppression by megaelectronvolt ions

S. Mazzi, Jeronimo Garcia, D. Zarzoso, Ye. O. Kazakov et autres

fr, ua, it, si, gb, se, pt, pl, fi, jp, gr, es, de, us, hu, lv, ch (code pays fourni par la source)

Disruption prediction with artificial intelligence techniques in tokamak plasmas

Jesús Vega, Andrea Murari, S. Dormido-Canto, Giuseppe A. Ratta et autres

In nuclear fusion reactors, plasmas are heated to very high temperatures of more than 100 million kelvin and, in so-called tokamaks, they are confined by magnetic fields in the shape of a torus. Light nuclei, such as deuterium and tritium, undergo a …

it, gb, es, pt, pl, ru, fi, jp, gr, fr, se, de, us, hu, lv, ch (code pays fourni par la source)

Overview of JET results for optimising ITER operation

J. Mailloux, N. Abid, K. Abraham, Paulo Abreu et autres

Abstract The JET 2019–2020 scientific and technological programme exploited the results of years of concerted scientific and engineering work, including the ITER-like wall (ILW: Be wall and W divertor) installed in 2010, improved diagnostic capabilities now fully available, a major neutral beam …

gb, pt, pl, ru, fi, jp, it, gr, fr, es, se, de, us, hu, lv, ch (code pays fourni par la source)

Progress from ASDEX Upgrade experiments in preparing the physics basis of ITER operation and DEMO scenario development

U. Stroth, D. Aguiam, Edoardo Alessi, C. Angioni et autres

Abstract An overview of recent results obtained at the tokamak ASDEX Upgrade (AUG) is given. A work flow for predictive profile modelling of AUG discharges was established which is able to reproduce experimental H-mode plasma profiles based on engineering parameters only. In …

de, pt, it, fi, us, nl, fr, gb, es, pl, ch, at, hu, cz (code pays fourni par la source)

Tracking of neoclassical tearing modes in TCV using the electron cyclotron emission diagnostics in quasi-in-line configuration

N. Rispoli, Carlo Sozzi, L. Figini, Daniele Micheletti et autres

it, ch, de (code pays fourni par la source)