DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

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In order to prepare the operation of ITER, it is important to estimate the amplitude of the runaway electron (RE) current that could appear following disruptions at large plasma currents. Theoretically, the avalanche gain of RE population on a toroidal flu ...

Linear gyrokinetic (GK) simulations using the Gyrokinetic Toroidal Code (GTC) [Lin et al., "Turbulent transport reduction by zonal flows: Massively parallel simulations," Science 281, 1835-1837 (1998)] have been performed to investigate Toroidicity-driven ...

JET, the world's largest operating tokamak with unique Be/W wall and tritium handling capability, completed a Deuterium-Tritium (D-T) campaign in 2021 (Maggi et al 29th Fusion Energy Conf.) following a decade of preparatory experiments, dedicated enhanceme ...

An Electron Cyclotron (EC) Heating and Current Drive (HCD) system will be installed in the EU DEMO Tokamak to provide plasma heating and stabilization by coupling up to 130 MW of mm-wave power into specific regions of the plasma. The mm -waves will be gene ...

FCC-ee performance is challenged by magnetic errors and imperfections. Magnetic design simulations predict a systematic quadrupolar component in the arc dipoles significantly impacting the machine optics. This paper studies the impact of this component in ...

Cross-field transport of particles in the boundary region of magnetically confined fusion plasmas is dominated by turbulence. Blobs, intermittent turbulent structures with large amplitude and a filamentary shape appearing in the scrape-off layer (SOL), are ...

In this doctoral thesis, a promising technique has been used for the measurement of non-thermal electrons in TCV. The technique employs a Vertical viewing ECE to more easily discriminate the radiation according to the energy of the electrons. Successful ...

We study aspects of chaos and thermodynamics at strong coupling in a scalar model using LCT numerical methods. We find that our eigenstate spectrum satisfies Wigner-Dyson statistics and that the coefficients describing eigenstates in our basis satisfy Rand ...

Black phosphorus (BP) stands out among two-dimensional(2D) semiconductorsbecause of its high mobility and thickness dependent direct band gap.However, the quasiparticle band structure of ultrathin BP has remainedinaccessible to experiment thus far. Here we ...

We present a study of the linear properties of the ion-temperature gradient (ITG) modes with collisions modelled for the first time by the linearized gyrokinetic (GK) Coulomb collision operator (Frei et al., J. Plasma Phys., vol. 87, issue 5, 2021, 9058705 ...

Dispersionless (flat) quantum states is a paradigm shift in condensed matter physics, serving as a natural platform for emergent electronic phases. In this work, we propose the foundation for the new framework addressing the issue of band flatness from qua ...

DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

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The effect of vertical displacements on the runaway electron avalanche in ITER mitigated disruptions

Linear gyrokinetic simulations of toroidal Alfvén eigenmodes in the Mega-Amp Spherical Tokamak

JET machine operations in T&D-T

Pre-conceptual design of the steering mirror for the DEMO electron cyclotron heating system

IMPACT OF DIPOLE QUADRUPOLAR ERRORS IN FCC-ee

Estimating cross-field particle transport at the outer midplane of TCV by tracking filaments with machine learning

Measuring the electron energy distribution in tokamak plasmas from polarized electron cyclotron radiation

Thermalization and chaos in a 1+1d QFT

Electronic Structure of Few-Layer Black Phosphorus from & mu;-ARPES

Local gyrokinetic collisional theory of the ion-temperature gradient mode

Quantum geometry, flat Chern bands, and Wannier orbital quantization