Showing 81 - 90 of 260 Conference Paper Results
2019
UKAEA-CCFE-CP(23)08
PHYSOR 2020, University of Cambridge, United Kingdom, 29 March - 2 April 2020
Steve Bradnam Vytautas Astromskas Zamir Ghani Mark R. Gilbert Malcolm J. Joyce Lee W. Packer
Conventional means of fast neutron detection typically involves moderation and subsequent detection of thermal neutrons via gas filled detectors such as He-3, or alternatively indirect neutron detection via gamma activation systems. Whilst these are often the most conclusive systems for neutron detection, inherent timing and energy information asso…
Preprint2020
UKAEA-CCFE-CP(23)06
Workshop on Waste Management for Fusion, Vienna, Austria, 24 - 26 February 2021
J.A.Bromley R.Vale M.R.GIlbert
The paper looks at a selective smelting regime where higher activity components are smelted with lower activity components with the aim to reduce the amount of ILW waste for disposal. This has been applied to the European DEMO Fusion Plant HCPB 2015 baseline design waste assessment. The paper assesses the structural steels in the breeder blanket…
Preprint2019
UKAEA-CCFE-CP(23)05
PHYSOR 2020, University of Cambridge, United Kingdom, 29 March - 2 April 2020 - CANCELLED
Jack Reid Greg Bailey Edmund Cracknell Mark Gilbert Lee Packer
For either nuclear fusion or generation IV fission reactors to be viable as a commercial energy source the decommissioning and waste disposal solutions must be considered during the design. A multi-step simulation process combining Monte Carlo Neutron Transport simulations with inventory simulations have been performed to estimate the activa…
Preprint2023
UKAEA-CCFE-CP(23)04
23rd Topical Conference on Radiofrequency Power in Plasmas, Hefei, China, 14-17 May 2019
Ruben Otin Wouter Tierens Felix Parra Shafa Aria Ernesto Lerche Philippe Jacquet Igor Monakhov Pierre Dumortie Bart Van Compernolle JET Contributors
When RF waves are applied in tokamaks with metal walls, sheath rectification effects associated with the fields induced in the scrape-off layer (SOL) may lead to enhanced plasma-wall interactions (i.e. heat-loads in the limiters, RF-induced impurity sources) which can endanger the integrity of the machine and limit the RF power. Although many co…
Preprint Published2023
UKAEA-CCFE-CP(23)03
23rd International Conference on Plasma Surface Interactions in Controlled Fusion Devices (PSI), Princeton, NJ, USA, 17-22 June 2018
Carmen Makepeace
Fuel retention in the JET-ITER like wall (JET-ILW) has decreased by a factor of 20 compared to operation with a carbon wall [1]. The reduction in retention is due largely to the decrease in chemical erosion of the beryllium main chamber. A reduction in co-deposition of fuel with beryllium has previously been reported in the divertor [2]. However…
Preprint Published2023
UKAEA-CCFE-CP(23)02
45th European Physical Society Conference on Plasma Physics (EPS), Prague, 2-6 July 2018
S. Elmore A. J. Thornton R. Scannell A. Kirk the MAST Team
Understanding the plasma parameters that affect the scrape off layer (SOL) width is a key issue for future tokamaks as the power entering the SOL (of order 100 MW [1] in ITER) and the SOL width (of order millimetres [2]) determine the heat flux to the divertor surfaces. The Eich scaling [2] can be used to characterise the divertor heat flux prof…
Preprint Published2023
UKAEA-STEP-CP(23)01
17th CRYOGENICS 2023 IIR International Conference
J Teah S Wray
Cryogenics are widely used in tokamak fusion reactors in three main areas. Firstly, to provide cooling to superconducting magnets for plasma confinement. Secondly, to provide the required level of vacuum in the plasma vessel through cryogenic vacuum technology. Thirdly, as part of the fusion fuel cycle, including matter injection, typically…
Preprint2023
UKAEA-CCFE-CP(23)01
28th IAEA Fusion Energy Conference, Nice, France, 10-15th May 2021
The JET contributors* (presented by J. Mailloux)
The JET 2019–2020 scientific and technological programme exploited the results of years of concerted scientific and engineering work, including the ITER-like wall (ILW: Be wall and W divertor) installed in 2010, improved diagnostic capabilities now fully available, a major neutral beam injection upgrade providing record power in 2019–2020, and …
Preprint Published2022
UKAEA-RACE-CP(22)01
Waste Management Symposium 2023, PHOENIX, ARIZONA, USA, 26 February - 2 March 2023
J. Davies H. Robinson W. Blyth A. Wagner J. Naish S. Bradnam R. Worral
The Active Cells Facility will be the world’s largest hot cell and will be used to process radioactive waste generated in the operation of the European Spallation Source. Several innovative technologies and approaches have been developed for the ESS Active Cells, drawing on advances made in remote handling techniques and technology from fusion re…
Preprint2022
UKAEA-CCFE-CP(22)11
13th International Tritium Science and Technology Conference, Radisson Blu Hotel, Bucharest, Romania, 16 - 21 October 2022