Conference Papers

Showing 1 - 6 of 6 Conference Paper Results
2020
UKAEA-CCFE-CP(20)99
27th IAEA Fusion Energy Conference, Ahmedabad, India, 22-27 October 2018

Unraveling the conditions that permit access to H-mode continues to be an unresolved physics issue for tokamaks, and accurate extrapolations are important for planning ITER operations and DEMO design constraints. Experiments have been performed in JET, with the ITER-like W/Be wall, to increase the confidence of predictions for the L-H transition po…

Preprint Published
2020
UKAEA-CCFE-CP(20)101
46th European Physical Society Conference on Plasma Physics (EPS), Milan, 8-12 July 2019

Disruption prediction and avoidance is critical in ITER and reactor-scale tokamaks to maintain steady plasma operation and to avoid damage to device components. The present status and results from the physics-based disruption event characterization and forecasting (DECAF) research effort are shown for multiple tokamak devices. Present analysis of K…

Preprint Published
2018
UKAEA-CCFE-CP(20)102
27th IAEA Fusion Energy Conference, Ahmedabad, India, 22-27 October 2018

The JET exploitation plan foresees D-T operations in 2019-2020. With respect to the first D-T campaign in 1998, when JET was equipped with a carbon wall, the experiments will be conducted in presence of a beryllium-tungsten ITER-like wall and will benefit from an extended and improved set of diagnostics and higher available additional heating power…

Preprint Published
2019
UKAEA-CCFE-CP(19)36
46th European Physical Society Conference on Plasma Physics (EPS), Milan, 8-12 July 2019

Intense suprathermal radiation, with spectral peaks at multiple harmonics of the deuteron cyclotron frequency, is detected from the outer midplane edge of KSTAR deuterium plasmas that are heated by tangential neutral beam injection (NBI) of 100keV deuterons. We identify how this deuterium ion cyclotron emission (ICE) is generated, and distinguish t…

Preprint Published
2019
UKAEA-CCFE-CP(19)27
27th IAEA Fusion Energy Conference, Ahmedabad, India, 22-27 October 2018

The ability to describe the essential physics and technology elements needed to robustly simulate the operation of ITER is critical to being able to model the plasma scenarios that will run in ITER. In this paper, the Integrated Modelling & Analysis Suite (IMAS) is used to simulate the 15 MA DT baseline scenario operation, including a descripti…

Preprint Published
2019
UKAEA-CCFE-CP(19)14
45th European Physical Society Conference on Plasma Physics (EPS), Prague, 2-6 July 2018

During ELM crashes in deuterium plasmas in the KSTAR tokamak, the emitted electromagnetic radiation includes features with sharp spectral structure in the frequency range up to ~900MHz. Cases where the spectral peaks below ~500MHz correspond to proton cyclotron harmonics at the outer midplane edge are explained (B Chapman et al., Nucl.…

Preprint Published