Conference Papers

Showing 31 - 40 of 147 Conference Paper Results
2020
UKAEA-CCFE-CP(20)100
46th European Physical Society Conference on Plasma Physics (EPS), Milan, 8-12 July 2019

Disruption prediction and avoidance is necessary in future MAST-U spherical tokamak discharges to enable long-pulse plasma operation. Research examining the stability of plasmas in the MAST database utilizing proposed high quality kinetic equilibrium reconstructions and calculations with various codes, including the Disruption Event Characteriza…

Preprint
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 to…

Preprint
2020
UKAEA-CCFE-CP(20)96
23rd International Conference on Plasma Surface Interactions in Controlled Fusion Devices (PSI), Princeton, NJ, USA, 17-22 June 2018

EDGE2D-EIRENE simulations of upstream density and radiative power scans in JET H-mode type plasmas in vertical target predict a linear relationship between the electron and ion temperatures, and power across the separatrix. This is in contradiction to the two-point model equations which states that the upstream temperature scales at the…

Preprint
2020
UKAEA-CCFE-CP(20)89
28th IEEE Symposium on Fusion Engineering, Jacksonville, Florida, USA, 2 – 6 June 2019

The EUROfusion Roadmap for fusion research was recently updated and describes a clear set of missions and associated goals on the route to commercial fusion electricity. Beyond ITER, the main target of the programme is the development of DEMO, a fusion technology demonstrator which will produce substantial net electrical output, breed its own fu…

Preprint Published
2020
UKAEA-CCFE-CP(20)90
28th IEEE Symposium on Fusion Engineering, Jacksonville, Florida, USA, 2 – 6 June 2019

Investment in past fusion experiments has been motivated largely by the study of tokamak physics, and has been vital to provide a sound physics basis for design of a power reactor. However, meeting the challenge of realising fusion energy production will require considerable and increasing investment in facilities for testing and development of …

Preprint Published
2020
2020
UKAEA-CCFE-CP(20)92
45th European Physical Society Conference on Plasma Physics (EPS), Prague, 2-6 July 2018

Dimensionless identity experiments test the invariance of plasma physics to changes in the dimensional plasma parameters, e.g. ne and Te, when the dimensionless parameters are conserved [1] [2]. However, conditions at the plasma boundary, such as influx of neutral particles, may introduce additional physics. An isotope identity experiment was ca…

Preprint
2020
UKAEA-CCFE-CP(20)93
45th European Physical Society Conference on Plasma Physics (EPS), Prague, 2-6 July 2018

In 2009-2011 so-called ITER-like wall was installed on JET tokamak, with beryllium limiters and tungsten divertor. Change of the plasma facing materials from carbon to metallic had a significant effect on plasma operations and confinement. Achieving steady plasma performance has become more challenging due to impurity accumulation [1], which has pu…

Preprint
2020
UKAEA-CCFE-CP(20)94
45th European Physical Society Conference on Plasma Physics (EPS), Prague, 2-6 July 2018

Edge localised modes (ELMs) are magneto-hydrodynamic (MHD) instabilities that drive filamentary plasma eruptions in high confinement tokamak discharges [1]. Gaining an improved understanding of ELMs is important [2]; in future fusion reactors such as ITER, ELM heat fluxes will need to be limited to ensure durability of divertor materials [3]. A new…

Preprint Published
2020
UKAEA-CCFE-CP(20)95
45th European Physical Society Conference on Plasma Physics (EPS), Prague, 2-6 July 2018

Preprint