UKAEA Papers

"Energy spreading and stabilisation of plasma by application of a high frequency electric field"

• LG Kuo-Petravic
• M Petravic
• DR Sweetman
• EG Murphy
• RM Sinclair
• E Thompson

"Kinetic Theory of Plasma"

• WB Thompson

"Properties of Low Friction Anti-Seize Coatings for Fusion Applications"

• Vaughan Thompson
• Russell Eaton
• Rene Raffray
• Konstantin Egorov

Remote maintenance in fusion machines such as JET and ITER relies on sliding interfaces such as bolted joints. Experience in JET, where removal torques much higher than installation values with uncoated bolts is commonplace, led to the installation of experimental bolted assemblies in 2015: the first of its kind in JET. These assemblies included so…

"Maximizing JET divertor mechanical performance for the upcoming Deuterium-Tritium experiments"

• Maria Lorena Richiusa
• Daniel Iglesias
• Guy F. Matthews
• Michael Porton
• Vaughan K. Thompson
• Zsolt Vizvary

The next D-T campaign will push JET ITER-like Wall (IWL) to high divertor power and energy levels. During the 2016 campaign, the Strike Point (SP) sweeping permitted relevant H-mode scenarios without exceeding the temperature limits imposed by JET Operation Instructions (JOIs). In the subsequent shutdown, six outer divertor tungsten-coated 2D carbo…

"Fastener investigation in JET"

• P. Bunting
• V. Thompson
• V. Riccardo

JET is an experimental fusion reactor consisting of magnetically confined, high temperature plasma insidea large ultra-high vacuum chamber. The inside of the chamber is protected from the hot plasma withtiles made from beryllium, tungsten, carbon composites and other materials bolted to the vessel wall.The study was carried out in response to a JET…

"The "“Ductility Exhaustion" Method For Static Strength Assessment of Fusion Structures"

• V. Thompson
• Z. Vizvary

The traditional method for static strength assessment of structures uses elastic stresses computed along critical ligaments and then divided into categories depending on their nature e.g. bending/membrane and primary/secondary. More recently, highly realistic plastic simulations are possible using FE (finite elements) which offer useful advantages …

"The “Ductility Exhaustion” Method For Static Strength Assessment of Fusion Structures"

• V. Thompson
• Z. Vizvary

The traditional method for static strength assessment of structures uses elastic stresses computed along critical ligaments and then divided into categories depending on their nature e.g. bending/membrane and primary/secondary. More recently, highly realistic plastic simulations are possible using FE (finite elements) which offer useful advantages …

"Operational Impact on the JET ITER-like Wall in-vessel Components"

• V. Riccardo
• G. Arnoux
• S. Collins
• P. Lomas
• G. Matthews
• N. Pace
• V. Thompson
• JET EFDA Contributors

The JET ITER-like Wall (ILW) provides the same plasma facing component configuration as ITER during its active phase: beryllium in the main chamber and tungsten in the divertor. Moving from a carbon-based wall to an all metal wall requires some operational adjustment. The reduction in radiation at the plasma edge and in the divertor can lead to hig…

"Design, Manufacture and Initial Operation of the Beryllium Components of the JET ITER-Like Wall"

• V Riccardo
• P Lomas
• G F Matthews
• I Nunes
• V Thompson
• E Villedieu
• JET EFDA Contributors

The aim of the JET ITER-like Wall Project was to provide JET with the plasma facing material combination now selected for the DT phase of ITER (bulk beryllium main chamber limiters and a full tungsten divertor) and, in conjunction with the upgraded neutral beam heating system, to achieve ITER relevant conditions. The design of the bulk Be plasma fa…