MEGAPIE at SINQ – The first liquid metal target driven by a megawatt class proton beam

Wagner, W.; Gröschel, F.; Thomsen, K.; Heyck, H.

doi:10.1016/j.jnucmat.2008.02.057

Cited by 45 publications

(22 citation statements)

References 3 publications

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“…The aim of the project was to design, build, operate and explore a liquid LBE spallation target of 1 MW beam power [6]. This first test experiment has been a milestone in the roadmap towards the demonstration of a working ADS concept and the feasibility of high power liquid metal targets in general [7].…”

Section: Introductionmentioning

confidence: 99%

Radiochemical determination of ¹²⁹I and ³⁶Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target

Hammer-Rotzler¹,

Neuhausen

Vockenhuber

et al. 2015

Radiochimica Acta

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Abstract:The concentrations of the long-lived nuclear reaction products 129 I and 36 Cl have been measured in samples from the MEGAPIE liquid metal spallation target. Samples from the bulk target material (lead-bismuth eutectic, LBE), from the interface of the metal free surface with the cover gas, from LBE/steel interfaces and from noble metal absorber foils installed in the cover gas system were analysed using Accelerator Mass Spectrometry at the Laboratory of Ion beam Physics at ETH Zürich. The major part of 129 I and 36 Cl was found accumulated on the interfaces, particularly at the interface of LBE and the steel walls of the target container, while bulk LBE samples contain only a minor fraction of these nuclides. Both nuclides were also detected on the absorber foils to a certain extent (≪ 1% of the total amount). The latter number is negligible concerning the radio-hazard of the irradiated target material; however it indicates a certain affinity of the absorber foils for halogens, thus proving the principle of using noble metal foils for catching these volatile radionuclides. The total amounts of 129 I and 36 Cl in the target were estimated from the analytical data by averaging within the different groups of samples and summing up these averages over the total target. This estimation could account for about half of the amount of 129 I and 36 Cl predicted to be produced using nuclear physics modelling codes for both nuclides. The significance of the results and the associated uncertainties are discussed.

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Section: Introductionmentioning

confidence: 99%

Radiochemical determination of ¹²⁹I and ³⁶Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target

Hammer-Rotzler¹,

Neuhausen

Vockenhuber

et al. 2015

Radiochimica Acta

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“…The target mock-up has been designed and produced by the Paul Scherrer Institute (PSI); it draws significantly on recent experience obtained with the liquid metal target of Megawatt Pilot Experiment-MEGAPIE (Megawatt Pilot Experiment) for the SINQ neutron spallation source at PSI [10].…”

Section: Qmentioning

confidence: 99%

Detection of a structural impact in liquid metal flow during test runs of the EURISOL target mock-up

Milenković

Samec

Dementjevs

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tThe many possible applications of Liquid Metal (LM) technology promise improved thermal efficiency, which can provide much-needed impetus to finding solutions for the growing world energy needs, as well as increasing the accuracy and power of certain delicate scientific apparatus used in the materials and biological sciences. The development of appropriate safeguards and instrumentation is critical to continued progress in this area of technology.During the hydraulic test of the EURISOL liquid metal target, a component failure was registered by the instrumentation; its detection in the presence of liquid metal flow was critical to ensuring the safety of both the personnel and the facility during a difficult test. The methods by which the failure was recorded and analysed are the subject of the paper.

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“…The ADS concept for transmutation of long-lived radioactive waste was the driving force behind the MEGAPIE project, a joint initiative by six European research institutions, the EU, JAEA (Japan), KAERI (Korea) and the DOE (USA), which has recently tested the world's first high-power LM spallation target on the basis of lead-bismuth eutectic (LBE) [2].…”

Section: Introductionmentioning

confidence: 99%

Design of a compact high-power neutron source—The EURISOL converter target

Samec

Milenković

Dementjevs

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tThe EURISOL project, a multi-lateral initiative supported by the EU, aims to develop a facility to achieve high yields of isotopes in radioactive beams and extend the variety of these isotopes towards more exotic types.The neutron source at the heart of the projected facility is designed to generate isotopes by fissioning uranium carbide (UC) targets arranged around a 4 MW neutron source. For reasons of efficiency, it is essential that the neutron source be as compact as possible, to avoid losing neutrons by absorption whilst maximising the escaping neutron flux, thus increasing the number of fissions in the UC targets. The resulting configuration presents a challenge in terms of absorbing heat deposition rates of up to 8 kW/cm 3 in the neutron source; it has led to the selection of liquid metal for the target material. The current paper presents the design of a compact high-power liquid-metal neutron source comprising a specially optimised beam window concept. The design is based on two-dimensional (2D) and three-dimensional (3D) computational fluid dynamics (CFD) numerical simulations for thermal hydraulics and hydraulic aspects, as well as finite-element method (FEM) for assessing thermomechanical stability. The resulting optimised design was validated by a dedicated hydraulic test under realistic flow conditions. A full-scale mock-up was built at the Paul Scherrer Institute (PSI) and was tested at the Institute of Physics of the University of Latvia (IPUL).

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MEGAPIE at SINQ – The first liquid metal target driven by a megawatt class proton beam

Cited by 45 publications

References 3 publications

Radiochemical determination of ¹²⁹I and ³⁶Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target

Radiochemical determination of ¹²⁹I and ³⁶Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target

Detection of a structural impact in liquid metal flow during test runs of the EURISOL target mock-up

Design of a compact high-power neutron source—The EURISOL converter target

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MEGAPIE at SINQ – The first liquid metal target driven by a megawatt class proton beam

Cited by 45 publications

References 3 publications

Radiochemical determination of 129I and 36Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target

Radiochemical determination of 129I and 36Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target

Detection of a structural impact in liquid metal flow during test runs of the EURISOL target mock-up

Design of a compact high-power neutron source—The EURISOL converter target

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Radiochemical determination of ¹²⁹I and ³⁶Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target

Radiochemical determination of ¹²⁹I and ³⁶Cl in MEGAPIE, a proton irradiated lead-bismuth eutectic spallation target