16th International Workshop on Spallation Materials Technology (IWSMT16)

Session

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials

31 Oct 2024, 11:00

The Cosener's house

12. Outcome of the Post-Irradiation Examination of the baseline design prototype target and Nb-cladding R&D for the Beam Dump Facility (BDF) at CERN

Rui Franqueira Ximenes (CERN)

31/10/2024, 11:00

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

The Beam Dump Facility (BDF) and the SHiP experiment [1] have been selected to investigate hidden sector physics at CERN’s ECN3 experimental cavern starting in 2030. To produce feebly interacting particles via a fixed target impacted by 400 GeV protons from CERN’s Super Proton Synchrotron (SPS), the design of this target must safely absorb up to 356 kW of beam power [2]. With the initiation of...

7. Autopsy of the n_TOF spallation target at CERN

Oliver Aberle (CERN)

31/10/2024, 11:25

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

The neutron time-of-flight (n_TOF) facility at the European Laboratory for Particle Physics (CERN) functions as a pulsed white-spectrum neutron spallation source. The facility's target, composed of pure lead, is impacted by a high-intensity 20 GeV/c pulsed proton beam. The facility enables the study of neutron-nucleus interactions across a wide spectrum of neutron kinetic energies, ranging...

23. An overview of STIP results − lifetime assessment of components in spallation targets

Yong Dai (Paul Scherrer Institut)

31/10/2024, 11:50

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

Irradiation experiments (STIP) in the targets of Swiss spallation neutron source (SINQ) at the Paul Scherrer Institute were started in 1998. More than nine thousand specimens of various Fe-, Ni-, Al-, Zr-, and W-alloys etc. were irradiated in a wide range of irradiation dose 2-30 dpa (in Fe) and temperature of 80-550 °C, with 20-100 appm He/dpa and 200-400 ape H/dpa depending on the materials...

29. Post-irradiation examinations of solution annealed and cold worked Inconel 718

Dr Peng Bi (Paul Scherrer Institut)

31/10/2024, 12:15

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

Ni-based alloys have been widely utilized as proton beam window (PBW) materials in existing spallation neutron sources and are potential materials for advanced generation IV reactors like molten salt reactors. However, the radiation-induced loss of ductility is still a concern, and the post-irradiation examination between different heat treatment methods is limited. This study aims to...

43. Post irradiation examination and lifetime limits of highly irradiated components at the Spallation Neutron Source and High Flux Isotope Reactor

David McClintock (Oak Ridge National Laboratory)

31/10/2024, 13:40

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

The microstructure and mechanical properties of components in high-dose environments are altered during operation, which typically result in a loss of ductility and fracture toughness. The decrease in ductility limits the useful component lifetime due to concerns of fracture during operation. The useful lifetimes of components are established by reviewing previous results from...

15. Multimodal characterization of samples from Spallation Neutron Source components exposed to extreme radiation and transmutation-inducing environments

Timothy Lach (Oak Ridge National Laboratory)

31/10/2024, 14:05

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

Simultaneous high-energy proton and neutron irradiation induce microstructural and mechanical responses in structural materials that are unique from irradiation with fission/fusion neutrons or accelerator-based ion beams. The target module and proton beam window (PBW) at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) are irradiated in these unique environments...

18. Irradiation Effect of SIMP Steel as Candidate Structural Materials for Accelerator Driven System

Tielong Shen (Institute of Modern Physics, Chinese Academy of Sciences, P.R. China)

31/10/2024, 14:30

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

The technological challenge presented by the conceptual future ADANES is the inability of current materials and components to withstand the harsh nuclear environment. Continue long-running program was performed to pursue development of low activation structural materials, with the greatest effort directed at the SIMP steels. Recent progress on the irradiation respondence of candidate...

34. Irradiation response of SIMP steel in STIP

Yushan YANG (Institute of Modern Physics, Chinese Academy of Sciences)

31/10/2024, 14:55

Results from Post-Irradiation Examination of target and structural materials, innovative experimental techniques in study of irradiated materials.

Ferrite/martensite (F/M) steels containing 9-12% chromium are considered as one of the most competitive candidate materials for advanced nuclear energy systems due to its excellent properties such as resistance to irradiation swelling, high thermal conductivity and low thermal expansion coefficient. SIMP steel is a novel F/M steel with about 10.24%Cr and 1.2%Si specially developed for the...