A5016332024- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Fusion materials and technologies
- Nuclear Materials and Properties
- Magnetic confinement fusion research
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Graphite, nuclear technology, radiation studies
- Nuclear physics research studies
- Radiation Therapy and Dosimetry
- Superconducting Materials and Applications
- Ionosphere and magnetosphere dynamics
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Radiation Effects in Electronics
- Anomaly Detection Techniques and Applications
- Iron and Steelmaking Processes
- Radioactivity and Radon Measurements
- Earthquake Detection and Analysis
- Advanced X-ray and CT Imaging
- Hydrogen embrittlement and corrosion behaviors in metals
- Hydrocarbon exploration and reservoir analysis
- Advanced materials and composites
- Particle accelerators and beam dynamics
- Geophysics and Gravity Measurements
Culham Centre for Fusion Energy
2015-2024
Culham Science Centre
2015-2024
United Kingdom Atomic Energy Authority
2015-2024
Royal Military Academy
2020
International Atomic Energy Agency
2018
Atomic Weapons Establishment
2007
Abstract The high-energy, high-intensity neutron fluxes produced by the fusion plasma will have a significant life-limiting impact on reactor components in both experimental and commercial devices. As well as producing defects, neutrons bombarding materials initiate nuclear reactions, leading to transmutation of elemental atoms. Products many these reactions are gases, particularly helium, which can cause swelling embrittlement materials. This paper integrates several different computational...
This review considers current Zr alloys and opportunities for advanced zirconium to meet the demands of a structural material in fusion reactors. based materials breeder blanket offer potential increase tritium breeding ratio above that Fe, Si V materials. Current commercial might be considered as water-cooled designs, due similar operating temperature fission power plants. For blankets designed operate at higher temperatures, will not high strength thermal creep requirements. Hence, with an...
Abstract ITER is of key importance in the European fusion roadmap as it aims to prove scientific and technological feasibility a future energy source. The EUROfusion consortium labs within Europe contributing preparation exploitation operation aspires exploit outcomes view DEMO. paper provides an overview major progress obtained recently, carried out frame new (initiated 2021) work-package called ‘ Pr eparation I TER O peration’ (PrIO). directly supported by eleven PrIO contributions given...
Only limited data exist on the effect of neutron irradiation brittle to ductile transition (BDT) in tungsten. This work investigates increase temperature (BDTT) following 1.67 displacements per atom, using four-point bend tests over a range temperatures (623–1173 K) and strain rates (3.5 × 10−7 - 2.5 10−5 s−1). The BDTT was found by 500 K after irradiation. activation energy for BDT determined Arrhenius analysis tests. Nanoindentation strain-rate jump were used characterise volume...
International Journal of Modern Physics EAccepted Papers No AccessBoron-coated straw detector efficiency comparison with 3He proportional counters — A prospect for cosmic ray neutron monitoringDakalo C. Mashao, Tilly L. Alton, Cory Binnersley, Steven Bradnam, Stephen Croft, Malcolm J. Joyce, Lee W. Packer, Tony Turner, James A. Wild, and Michael AspinallDakalo Alton Search more papers by this author , Binnersley Bradnam Croft Joyce Packer Turner Wild Aspinall...
In view of the planned DT operations at JET, a calibration JET neutron monitors 14 MeV energy is needed using generator deployed inside vacuum vessel by remote handling system. The target accuracy this ±10% as also required ITER, where precise yield measurement important, e.g. for tritium accountancy. To achieve accuracy, selected source has been fully characterised and calibrated prior to in-vessel monitors. This paper describes measurements performed different types detectors,...
Shutdown dose rate calculations provide an essential input to the design and research of fusion power plant technology. They allow estimation personnel equipment during planned unplanned maintenance. The mesh coupled rigorous 2 step (MCR2S) methodology used at Culham Centre for Fusion Energy (CCFE) was originally developed link MCNP particle transport code FISPACT-II inventory code. As new codes are there is a strong motivation move towards agnostic approach. This paper details integration...
Neutronics benchmark experiments are conducted at JET in the frame of WPJET3 NEXP within EUROfusion Consortium for validating neutronics codes and tools used ITER nuclear analyses to predict quantities such as neutron flux along streaming paths dose rates shutdown due activated components. The preparation rate future Deuterium-Tritium operations (DTE2 campaign) progress. This paper summarizes status measurements progress current Deuterium–Deuterium (DD) campaign efforts DTE2.
Abstract We report on a new ground-level neutron monitor design for studying cosmic rays and fluxes of solar energetic particles at the Earth’s surface. The first-of-its-kind instrument, named NM-2023 after year it was standardised following convention, will be installed United Kingdom Meteorological Office observatory (expected completion mid 2024) reintroduce such monitoring in UK first time since ca. 1984. Monte Carlo radiation transport code is used development application parameterised...
This paper details progress in experimental characterisation work at JET for the long-term irradiation station, conducted as part of a project to perform activation experiments using ITER materials. The aim is take advantage significant 14 MeV neutron yield expected during operations irradiate samples materials that will be used manufacturing tokamak components, such Nb3Sn, SS316L steels from range manufacturers, SS304B, Alloy 660, W, CuCrZr, OF–Cu, XM-19, Al bronze, NbTi and EUROFER....
Improvements in Radio-Isotope IDentification (RIID) algorithms have seen a resurgence interest with the increased accessibility of machine learning models. Convolutional Neural Network (CNN)-based models been developed to identify arbitrary mixtures unstable nuclides from gamma spectra. In service this, methods for simulation and pre-processing training data were also developed. The implementation 1D multi-class, multi-label CNNs demonstrated good generalisation real spectra poor statistics...
The simulation of neutron irradiation–induced transmutation using inventory codes is an important part the research into materials in various nuclear environments, including fusion, fission, medical physics, security, and astrophysics. These simulations, even their simplest form, such as irradiation a single pure element, generate large time-dependent data sets complex results. For each nuclide inventory, function time, output will include number atoms its contribution to variety...
A key goal for fusion materials modelling research is the development of predictive simulation models and capabilities to assess material performance under neutron irradiation conditions expected in near-plasma regions reactor tokamaks. This paper presents computational results from fields latest concepts next-step demonstration reactor, DEMO. In particular, variation exposure as a function coolant choice tritium-breeding blanket concept are described, calculated spectra then applied predict...
Abstract Molybdenum is a potential material for future nuclear fusion experiments and power plants. It has good thermo-mechanical properties can be readily fabricated, making it attractive as an alternative to tungsten (the current leading candidate) high neutron flux thermal load regions of devices. Unfortunately, exposure neutrons predicted cause significant radioactivity in elemental Mo decades centuries after exposure, which would problem during maintenance decommissioning operations....