Experiments and SOLEDGE3X modeling of dissipative divertor and X-point Radiator regimes in WEST

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The high confinement mode (H-mode) is a promising route to achieve high performance tokamak operations, as the ones foreseen in ITER and beyond. However, accessing a stable H-mode phase requires that the power across the plasma separatrix, Psep, exceeds a ...

This study examines the sawtooth crash phenomenon in tokamak plasmas by modeling it as a sequence of multi-region relaxed magnetohydrodynamic (MRxMHD) equilibria. Using the stepped-pressure equilibrium code, we constructed a series of equilibria representi ...

We present single-stage optimization of islands in finite- β stellarator equilibria. Stellarator optimization is traditionally performed as a two-stage process; in the first stage, an optimal equilibrium is calculated that balances a set of competing const ...

The paper describes the operation and upgrade of the Heating Neutral Beam Injection (HNBI) system as well as the related infrastructure at the Tokamak Configuration Variable (TCV) during the last years. In 2023, the installation of new TCV neutron shieldin ...

This paper reports the first experiment carried out in deuterium-tritium addressing the integration of a radiative divertor for heat-load control with good confinement. Neon seeding was carried out for the first time in a D-T plasma as part of the second D ...

A toroidal Alfven eigenmode (TAE) has been observed to be driven by alpha particles in a JET deuterium-tritium internal transport barrier plasma. The observation occurred 50 ms after the removal of neutral beam heating (NBI). The mode is observed on magnet ...

Filamentary structures, also known as blobs, are a prominent feature of turbulence and transport at the edge of magnetically confined plasmas. They cause cross-field particle and energy transport and are, therefore, of interest in tokamak physics and, more ...

Alpha particles with energies on the order of megaelectronvolts will be the main source of plasma heating in future magnetic confinement fusion reactors. Instead of heating fuel ions, most of the energy of alpha particles is transferred to electrons in the ...

The Tokamak a Configuration Variable (TCV) has recently been equipped with gas baffles to increase its divertor closure for a broad range of divertor magnetic geometries. First experimental results reported in Reimerdes et al. (2021) demonstrated compatibi ...

The condition of the latest version of the ELMy H-mode database has been re-examined. It is shown that there is bias in the ordinary least squares regression for some of the variables. To address these shortcomings three different techniques are employed: ...

Experiments and SOLEDGE3X modeling of dissipative divertor and X-point Radiator regimes in WEST

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Psep/PLH control in deuterium and deuterium-tritium JET plasmas

Sawtooth crash in tokamak as a sequence of multi-region relaxed MHD equilibria

Efficient single-stage optimization of islands in finite-β stellarator equilibria

Present status of heating neutral beam injection system at TCV

The core-edge integrated neon-seeded scenario in deuterium-tritium at JET

Stability analysis of alpha driven toroidal Alfven eigenmodes observed in JET deuterium-tritium internal transport barrier plasmas

Analysis techniques for blob properties from gas puff imaging data

18th International Workshop on "Plasma Edge Theory in Magnetic Fusion Devices" (September 13-15, 2021) PREFACE

Enhanced performance in fusion plasmas through turbulence suppression by megaelectronvolt ions

Divertor closure effects on the TCV boundary plasma

Optimizing Central Electron Bernstein Wave Deposition via O-X-B Double Mode Conversion in the TCV Tokamak

Co- and Counter - viewing oblique ECE measurements during ECH and ECCD on the TCV tokamak

Scaling of the energy confinement time with beta and collisionality approaching ITER conditions