Subspace Acceleration for a Sequence of Linear Systems and Application to Plasma Simulation

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Alfven eigenmodes (AEs) driven by energetic alpha particles can lead to enhanced fast ion transport and losses, thereby degrading the plasma performance in ITER and future magnetic confinement fusion reactors. Unexpectedly, AEs with negative toroidal mode ...

Neutral beam injection (NBI) is one of the auxiliary power systems considered for the EU DEMO pulsed plasma ('DEMO1'). In this paper, we discuss the characteristics of optimized NBI in terms of the DEMO1 requirements, relating physics and engineering conte ...

A study of mixed hydrogen-deuterium H-mode plasmas has been carried out in JET-ILW to strengthen the physics basis for extrapolations to JET D-T operation and to support the development of strategies for isotope ratio control in future experiments. Variati ...

The isotope dependence of plasma transport will have a significant impact on the performance of future D-T experiments in JET and ITER and eventually on the fusion gain and economics of future reactors. In preparation for future D-T operation on JET, dedic ...

Synchrotron radiation observed from runaway electrons (REs) in tokamaks depends upon the position and size of the RE beam, the RE energy and pitch distributions, as well as the location of the observer. We show experimental synchrotron images of a vertical ...

Predictability of burning plasmas is a key issue for designing and building credible future fusion devices. In this context, an important effort of physics understanding and guidance is being carried out in parallel to JET experimental campaigns in H and D ...

Block-structured mesh generation techniques have been well addressed in the CFD community for automobile and aerospace studies, and their applicability to magnetic fusion is highly relevant, due to the complexity of the plasma-facing wall structures inside ...

Electron-scale micro-turbulence driven by the electron temperature gradient (ETG) instability has recently been shown to impact the electron heat transport in tokamaks. Given the relevance of these mechanisms for ITER scenarios, a new study has been carrie ...

Cavity Ring Down Spectroscopy (CRDS) is used to measure the D- absolute density produced in the helicon plasma reactor RAID (Resonant Antenna Ion Device) at the Swiss Plasma Center. The birdcage geometry of the helicon antenna produces a homogeneous, high- ...

Heat, particle and momentum confinement in L- and H-mode in deuterium, hydrogen and in D/H mixtures have been investigated in JET with the ITER-like wall (JET-ILW). The paper expands on previous work [1,2] by presenting new results on heat, momentum and pa ...

Subspace Acceleration for a Sequence of Linear Systems and Application to Plasma Simulation

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Evidence for Alfven eigenmodes driven by alpha particles in D-He-3 fusion experiments on JET

Optimization-oriented modelling of neutral beam injection for EU pulsed DEMO

Mixed hydrogen-deuterium plasmas on JET ILW

Isotope dependence of energy, momentum and particle confinement in tokamaks

Runaway electron synchrotron radiation in a vertically translated plasma

First principles and integrated modelling achievements towards trustful fusion power predictions for JET and ITER

A wall-aligned grid generator for non-linear simulations of MHD instabilities in tokamak plasmas

Investigation of the role of electron temperature gradient modes in electron heat transport in TCV plasmas

Cavity ring-down spectroscopy to measure negative ion density in a helicon plasma source for fusion neutral beams

Isotope Dependence of Confinement in JET-ILW Deuterium and Hydrogen Plasmas