16th International Workshop on Spallation Materials Technology (IWSMT16)

Session

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

29 Oct 2024, 15:20

The Cosener's house

17. Damage inspection of mercury target vessel operated at 1 MW in J-PARC neutron source

Dr Takashi Naoe (Japan Atomic Energy Agency)

29/10/2024, 15:20

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

At the Materials and Life Science Experimental Facility (MLF) in J-PARC, liquid mercury target for the pulsed spallation neutron source is in operation. A target vessel made of SS316L is damaged by pressure wave induced cavitation in mercury in addition to the 3 GeV proton and neutron irradiation. We are improving the target vessel to mitigate the cavitation erosion and gradually ramping-up...

22. Comparison of simulated and observed cavitation-induced erosion damage in Spallation Neutron Source target vessels

Hao Jiang (Oak Ridge National Laboratory)

29/10/2024, 15:45

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

Cavitation-induced erosion patterns on the mercury-facing surfaces of Spallation Neutron Source (SNS) mercury target vessels were simulated using a newly developed parameter called the maximum bubble size. Explicit dynamic finite element simulations of the target vessels’ structural response to beam pulses were performed. The cavitation bubble growth was calculated using a user defined...

6. Conceptual development of beamstrahlung photon absorber for FCCee

Marco Calviani (CERN)

29/10/2024, 16:10

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

The FCCee is a proposed 90-km electron-positron collider to be developed at CERN, intended to succeed the LHC.

During its operation, the FCCee will generate high-energy photon beams on both sides of the experimental insertions with an anticipated power of up to 500-600 kW in the 45.6 GeV, ~1.4 A operating phase. Photon energies will average between 2 to 63 MeV, with higher energy tails...

56. Long term fuel assembly material and hydraulic behavior in HLM systems

Alessandro Marino (SCK CEN)

29/10/2024, 16:35

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

During a series of fuel assembly (FA) tests at the refurbished MEXICO facility at SCK CEN, extensive research was conducted to evaluate the material behavior and performance of heavy liquid metal (HLM)-cooled wire-wrapped fuel assemblies. The primary objective was to assess long-term material compatibility such as corrosion resistance, and thermal-hydraulic behavior under representative...

38. Experimental Activities in SCK CEN on Corrosion of Structural Materials in Static and Dynamic Liquid Pb-Bi Eutectic - Overview

Valentyn Tsisar (SCK CEN, Belgian Nuclear Research Centre)

31/10/2024, 09:00

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

SCK CEN conducts an extensive experimental program within the MYRRHA and SFR-SMR R&D programs to characterize candidate structural materials for their application in heavy liquid metals. Main challenges lie here in the qualification of candidate materials for a variety of environmental parameters of the liquid metal system, i.e.: temperature; flow velocity; liquid metal chemistry with respect...

39. Study on Electromigration Effect in High-temperature Liquid Metal Pool

Humam - (Tokyo Institute of Technology)

31/10/2024, 09:25

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

Liquid lead (Pb) is candidate coolant of accelerator driven systems, fast reactors and fusion reactors. However, the chemical compatibility of liquid Pb with structural materials is one of the important issues. The flow of electrons and ions in the liquid metal components may result in electrical current flow. The electrical current flow in a liquid metal pool can promote a mass transport...

40. Excellent corrosion resistance of self-healing Al-rich oxide layer on FeCrAl alloy in flowing lead bismuth eutectic

Yoshiki Kitamura (Tokyo Institute of Technology)

31/10/2024, 09:50

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

Liquid lead bismuth eutectic (LBE) is a candidate target material for accelerator driven systems. The chemical compatibility of liquid LBE with structural materials is one of the important issues to be addressed. FeCrAl alloys are candidate structural materials since they can form Al-rich oxide layers on their surface which can function as an anti-corrosion barrier in liquid metals. The...

25. Embrittlement effect of liquid lead-bismuth eutectic on irradiated ferritic/martensitic steels

Yong Dai (Paul Scherrer Institut)

31/10/2024, 10:15

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

Ferritic/martensitic (FM) steels have been selected as structural materials for applications in liquid metal spallation targets, such as the MEGAPIE (megawatt pilot experiment) target, and in the future accelerator driven systems (ADSs). Liquid lead–bismuth eutectic (LBE) is a candidate target and coolant material for such systems. Apart from the serious degradation of the mechanical...