16th International Workshop on Spallation Materials Technology (IWSMT16)

Session

Poster session

Not scheduled

The Cosener's house

21. Characterization of Helium Bubble Formation in FeCr Alloys Using Positron Annihilation Lifetime Spectroscopy

Vladimir Krsjak (Slovak University of Technology, Institute of Nuclear and Physical Engineering, Ilkovicova 3, 812 19, Bratislava, Slovakia)

Fundamental studies on the effects of radiation damage in materials. Innovative radiation damage resistant materials technology.

Positron annihilation lifetime spectroscopy (PALS) has been used to improve the understanding and prediction of early-stage helium-assisted radiation aging of structural materials. The present study integrates a unique high-energy helium ion irradiation experiment with spallation target irradiation experiments, offering experimental PALS data that reveal the microstructure and a wide range of...

50. Development of 3D-printed beam windows for COMET Phase alpha and Phase 1

Shunsuke Makimura (KEK, J-PARC)

Facility overview, updates and developments. Operational experience of targets, beam windows, cooling and ancillary systems.

The COherent Muon to Electron Transition (COMET) project is at operation of phase-α in J-PARC Hadron experimental facility. The project objective is to explore the lepton flavor violation process by searching the neutrino-less conversion of muons into electrons. In the beam line, the muon transport solenoids are composed of superconducting magnets which are kept cool by liquid Helium (LHe)....

59. Erosion Problem for Granular Tungsten Targets Using Circulating Fluidized Beds- Experimental Investigation of Surface Damage

Ben Suitters (STFC)

Liquid/solid and particle beam interactions and associated studies: pressure waves, cavitation, erosion, corrosion etc and mitigation techniques.

For a higher power neutron or muon source, a flowing granular target would offer superior thermal performance and enable a greater particle yield than a monolithic target. However, the flow of tungsten would necessitate solid particle impingement erosion conditions to occur. Previous work at RAL to produce a pilot plant conveying granular tungsten resulted in severe erosion of stainless-steel...

5. NUMERICAL MODELING OF HIDDEN DAMAGE ACCUMULATION DUE TO RADIATION EXPOSURE AND HYDROGEN EMBRITTLEMENT

Prof. Dmytro Breslavsky (National Technical University “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine)

Fundamental studies on the effects of radiation damage in materials. Innovative radiation damage resistant materials technology.

NUMERICAL MODELING OF HIDDEN DAMAGE ACCUMULATION DUE TO RADIATION EXPOSURE AND HYDROGEN EMBRITTLEMENT
Dmytro Breslavsky1, Galyna Tolstolutska2, Sergiy Karpov2
1 National Technical University “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine
2National Science Center “Kharkov Institute of Physics and Technology”, Kharkiv, Ukraine
Email: g.d.t@kipt.khakov.ua

Hydrogen is generated by...

58. Resistivity of Frenkel Pair in BCC W from First Principles

Mr Jatinder Singh (Materials Division, United Kingdom Atomic Energy Authority, Culham Campus, Abingdon, OX14 3DB, United Kingdom. EPSRC Centre for Doctoral Training in Topological Design, University of Birmingham, Birmingham, B15 2TT, United Kingdom. School of Metallurgy and Materials, University of Birmingham, Birmingham, B15 2TT, United Kingdom)

Application of new materials data and/or safety codes, computational modelling/analysis.

Tungsten is a key material for both nuclear fusion and as a spallation target for neutron sources. In nuclear fusion, W is being considered for heat divertors thanks to its good thermal conductivity, resistance to irradiation damage, and high melting temperature. Furthermore, due to its high density and atomic mass, W is an excellent material as a target for neutron sources. In both settings,...

3. Structural and mechanical responses of (ZrTiNbTa)C4 and ZrC ceramics under energetic He-ions

Yabin Zhu

High entropy carbide ceramics (HECCs) are potential structural materials for advanced reactor concepts where numerous helium atoms would be produced due to the (n, α) nuclear transmutation reaction. However, the irradiation behaviors of high entropy ceramics are not well understood until now. In present work, the responses of high entropy (ZrTiNbTa)C4 and its binary constituent ZrC ceramics to...