UKAEA Papers

"Gravitational resistive instability of an incompressible plasma in a sheared magnetic field"

• KV Roberts
• JB Taylor

"Equilibrium and stability of plasma in arbitrary mirror fields"

• JB Taylor

"Some stable plasma equilibria in combined mirror-cusp fields"

• JB Taylor

"The magneto - hydrodynamics of a rotating fluid and the earth's dynamo problem"

• JB Taylor

"An integrated digital framework for the design, build and operation of fusion power plants"

• Eann A. Patterson
• Sally Purdie
• Richard J. Taylor
• Chris Waldon

The development of a commercial fusion power plant presents a unique set of challenges associated with the complexity of the systems, the integration of novel technologies, the likely diversity and distribution of the organisations involved and the scale of resources required.  A framework for creating a digital environment that integrates researc…

"Dynamics of Scrape-off Layer Filaments in Detached Conditions"

• David Schworer
• Nick Walkden
• Ben Dudson
• Fulvio Militello
• Huw Leggate
• Miles Turner

The here presented work studies the dynamics of filaments using 3D full-f fluid simulations in the presence of detached background profiles. It was found that evolving the neutrals on the time-scale of the filament did not have a significant impact on the dynamics of the filament. In general a decreasing filament velocity with increasing plasma den…

"Model for a Beam Driven Plasma Neutraliser based on ITER Beam Geometry"

• I. Turner
• A J T. Holmes

A model for a beam-driven plasma neutraliser for a 1MeV, 40A beam of D- ions is presented and is based on the dimensions of the ITER gas neutraliser. For the beam-driven plasma neutraliser there is no need for an external power source for producing and sustaining the plasma. Instead the use of high magnetic fields is employed for plasma confinement…

"The Digital Mirror Langmuir Probe: FPGA Implementation of Real-Time Langmuir Probe Biasing"

• C. Vincent
• W. McCarthy
• T. Golfinopoulos
• B. LaBombard
• R. Sharples
• J. Lovell
• G. Naylor
• S. Hall
• J. Harrison
• A.Q. Kuang

High bandwidth, high spatial resolution measurements of electron temperature, density and plasma potential are valuable for resolving turbulence in the boundary plasma of tokamaks. While conventional Langmuir probes can provide such measurements either their temporal or spatial resolution is limited: the former by the sweep rate necessary for obtai…

"Ion source backplate loading due to backstreaming electrons in the JET EP2 neutral beam injectors"

• I. Turner
• R. McAdams
• W. Arter
• A. Ash
• M. Barnard
• D. Ciric
• I. Day
• D. Keeling
• D. King
• C. Lane
• M. Nicassio
• T. Robinson
• A. Shepherd
• J. Zacks

Increased neutralisation and hence injected neutral beam power can be achieved by increasing the neutraliser target. This has the potential to increase the loading on the ion source backplate due to backstreaming electrons. Measurements of the backplate power loading due to backstreaming electrons are presented for the JET EP2 neutral beam injector…

"Waste implications from minor impurities in European DEMO materials"

• M.R. Gilbert
• T. Eade
• C. Bachmann
• U. Fischer
• N.P. Taylor

Waste-production predictions for the future demonstration fusion power plant (DEMO) are necessary to produce an accurate picture of the likely environmental and economic costs of radioactive waste disposal at end-of-life (EOL). Even during the conceptual stage of DEMO design it is important to perform waste assessment so as to avoid potential surpr…