James Roberts Ross MacDonald Alex Russell James Redman Ian Bunce Terry O’Sullivan Ethan Flynn
In future demonstration fusion power plants, plasma facing components will face high steady state and ultra-high transient heat loads from the plasma. Introducing low thermal conductivity features to the component can reduce the peak temperatures seen by the coolant pipe, but at the trade-off of a loss of steady-state performance. Producing low-…
PreprintM. E. Sayed J. O. Roberts K. Donaldson S. T. Mahon F. Iqbal B. Li S. F. Aixela G. Mastorakis E. T. Jonasson M. P. Nemitz S. Bernardini A. A. Stokes
Operations in extreme and hostile environments such as offshore oil and gas, nuclear decommissioning, nuclear facilities maintenance, deep mining, space exploration, and subsea applications require the execution of sophisticated tasks. In nuclear environments, robotic systems have advanced significantly over the past years but still suffer from ta…
Preprint PublishedViacheslav Kuksenko Artem Lunev Ed Darnbrough Chris Densham Patrick Hurh Steve Roberts
The effect of ion irradiation on evolution of microstructure and hardening of beryllium with different impurity levels was investigated using TEM and nanoindentation. High purity S-65 grade and less-pure S-200-F grade were implanted by helium ions at temperatures of 50°C and 200°C. 11 different energies were used, so as to create a quasi-homog…
Preprint PublishedN. Mantel D. Bowden S.S. Herashchenko M. Fursdon A. D. L. Hancock I.E. Garkusha J. Roberts V.A. Makhlai A. von Mueller T. R. Barrett J.-H. You
In the conceptual design of EU-DEMO, damage to plasma facing components under disruption events is planned to be mitigated by specific sacrificial limiter components. A new limiter concept has been proposed using lattice structures fabricated with tungsten powder by additive manufacturing techniques. The major potential benefits of using a latti…
PublishedN. Mantel D. Bowden S.S. Herashchenko M. Fursdon A. D. L. Hancock I.E. Garkusha J. Roberts V.A. Makhlai A. von Mueller T. R. Barrett J.-H. You
In the conceptual design of EU-DEMO, damage to plasma facing components under disruption events is planned to be mitigated by specific sacrificial limiter components. A new limiter concept has been proposed using lattice structures fabricated with tungsten powder by additive manufacturing techniques. The major potential benefits of using a latti…
PublishedR.G. Abernethy J.S.K.-L. Gibson A. Giannattasio J.D. Murphy O. Wouters S. Bradnam L.W. Packer M.R. Gilbert M. Klimenkov M. Rieth H.-C. Schneider C.D. Hardie S.G. Roberts D.E.J. Armstrong
Only limited data exist on the effect of neutron irradiation on the brittle to ductile transition (BDT) in tungsten. This work investigates the increase in brittle to ductile transition temperature (BDTT) following neutron irradiation to 1.67 displacements per atom, using four-point bend tests over a range of temperatures (623 – 1173 K) and strai…
Preprint Published