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Wei Jiang (Paul Scherrer Institute)29/10/2024, 10:35Application of new materials data and/or safety codes, computational modelling/analysis.
The SINQ Target Irradiation Program (STIP) is one of the crucial research projects performed by the Paul Scherrer Institute (PSI). The seventh experiment of the SINQ Target Irradiation Program (STIP-VII) was conducted in SINQ Target 10 during 2013 and 2014 and the total proton charge received by the target is 11.7 Ah. A radiation damage assessment was performed by using the Monte Carlo...
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Lina Quintieri (STFC)29/10/2024, 11:00Application of new materials data and/or safety codes, computational modelling/analysis.
The nuclear and engineering design of the target is critical for optimizing the performance and efficiency of neutron sources. This study presents a Monte Carlo-driven analysis, conducted with the FLUKA code, of the currently operating ISIS-TS1 target and several derived notional designs. The analysis aims to quantify the impact of key nuclear parameters—such as proton range and the neutron...
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Wei Lu (Oak Ridge National Laboratory)29/10/2024, 11:25Application of new materials data and/or safety codes, computational modelling/analysis.
Due to its profound effects on the microstructure, void swelling and embrittlement of structural materials, the transmutation gas production of hydrogen and helium is an important metric in evaluating radiation damage on structural materials in a spallation facility. A systemic measurement of gas productions at the proton beam window (PBW) and mercury target vessel at SNS is underway. ...
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Dan Wilcox (STFC)29/10/2024, 11:50Application of new materials data and/or safety codes, computational modelling/analysis.
As part of the ISIS TS1 Project, a new design of spallation target was installed on the first target station (TS1), which has now been operating for almost a year. Detailed Finite Element Analysis (FEA) simulations were carried out, and compared to measured operating data. FEA has also been used to investigate unexpected observations on some target plates. Attempts were made to measure...
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David Findlay (ISIS/RAL/STFC/UKRI)29/10/2024, 13:20Application of new materials data and/or safety codes, computational modelling/analysis.
During 2021–2022, a new style of multi-plate tantalum-clad tungsten spallation-neutron-producing target was installed in Target Station 1 of the ISIS Spallation Neutron and Muon Source. It is therefore of relevance for investigations to be made into the thermal and structural performance of the irradiated target. Some challenges of deducing target performance parameters from measurements...
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Dan Wilcox (STFC)29/10/2024, 13:45Application of new materials data and/or safety codes, computational modelling/analysis.
Conceptual design studies are now underway for ISIS-II, the successor to the UK’s pulsed neutron and muon source. Appropriate target technologies must be selected for each of the two proposed neutron target stations, to achieve a balance between neutronic performance and engineering reliability.
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This talk will present the status of preliminary designs for both stationary and rotating target... -
Samuel Miller (MSU-FRIB)29/10/2024, 14:10Application of new materials data and/or safety codes, computational modelling/analysis.
The Facility for Rare Isotope Beams (FRIB) is a high-power heavy ion accelerator facility at Michigan State University completed in 2022. Its driver linac is designed to accelerate all stable ions to energies above 200 MeV/u with beam power of up to 400 kW. Currently, FRIB is operating at 10 kW, delivering multiple primary beam species. The beam dump absorbs approximately 75% of the primary...
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Dr Yongjoong Lee (Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA)29/10/2024, 14:35Spallation neutron/muon source component, systems & materials related technology and innovation.
In developing a high-power water-cooled tungsten target for spallation neutron production, one of the important factors that limits the beam power on the target is decay heat driven temperature rise in tungsten in loss of coolant accidents. When tungsten is exposed to water vapor, tungsten oxides formed in steam is known to become volatile at above 800 oC causing radiological hazards with a...
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