Nuclear and thermal-hydraulics analysis of spallation window targets

Sordo, F.; León, Paloma; Martínez-Val, José M.

doi:10.1016/j.nima.2007.02.018

Cited by 7 publications

(4 citation statements)

References 20 publications

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“…The formation and effects of thermal stresses in high power targets have been studied extensively over the past few years [5][6][7][8]. With many target materials proposed, it is essential to be able to draw quick comparisons of the different merits of these materials, in order to facilitate the engineering design and material selection process.…”

Section: Thermal Stressesmentioning

confidence: 99%

Generic study on the design and operation of high power targets

Ahmad

Booth

Jenkins

et al. 2014

Phys. Rev. ST Accel. Beams

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With the move towards beam power in the range of 1-10 MW, a thorough understanding of the response of target materials and auxiliary systems to high power densities and intense radiation fields is required. This paper provides insight into three major aspects related to the design and operation of high power solid targets: thermal stresses, coolant performance, and radiation damage. Where appropriate, a figure-of-merit approach is followed to facilitate the comparison between different target or coolant candidates. The section on radiation damage reports total and spatial variations of displacement-per-atom and helium production levels in different target materials.

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Section: Thermal Stressesmentioning

confidence: 99%

Generic study on the design and operation of high power targets

Ahmad

Booth

Jenkins

et al. 2014

Phys. Rev. ST Accel. Beams

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“…Two types of connection between the accelerator tube and the target case are possible: window and windowless. In the windowless spallation target (WST) configuration, introduced by the Ansaldo Company nuclear division team for a demonstrative design (Cinotti and Gherardi, 2002;Bianchi, et al, 2005Bianchi, et al, , 2008Aït Abderrahim et al, 2012;Mansani et al, 2012), the proton beam impinges directly the target (lead or lead-bismuth eutectic) and the spallation region velocity field must be able to remove efficiently the rather high volumetric thermal power due to the proton interactions with the liquid metal nuclei (Abanades et al, 2008;Kumawat et al, 2008;Sordo et al, 2008). As regards the WST, a major issue is the study of the velocity and temperature fields because boiling phenomena are critical for a correct neutrons production: the spallation region velocity field must be able to remove the volumetric thermal power due to the proton interactions with lead-bismuth nuclei without the local boiling of the liquid.…”

Section: Introductionmentioning

confidence: 99%

Thermal Hydraulics of Accelerator-Driven System Windowless Targets

et al. 2015

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The study of the fluid dynamics of the windowless spallation target of an accelerator-driven system (ADS) is presented. Several target mockup configurations have been investigated: the first one was a symmetrical target, which was made by two concentric cylinders and the other configurations are not symmetrical. In the experiments, water has been used as hydraulic equivalent to lead-bismuth eutectic fluid. The experiments have been carried out at room temperature and flow rate up to 24 kg/s. The fluid velocity components have been measured by an ultrasound technique. The velocity field of the liquid within the target region either for the approximately axial-symmetrical configuration or for the not symmetrical ones as a function of the flow rate and the initial liquid level is presented. A comparison of experimental data with the prediction of the finite volume FLUENT code is also presented. Moreover, the results of a 2D-3D numerical analysis that investigates the effect on the steady state thermal and flow fields due to the insertion of guide vanes in the windowless target unit (TU) of the EFIT project ADS nuclear reactor are presented, by analyzing both the cold flow case (absence of power generation) and the hot flow case (nominal power generation inside the TU).

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“…Such separation barrier is called window, and it must withstand very demanding mechanical stresses under high particle irradiation damage, what limits its expected operation lifetime. Several studies has been carried our by us (Sordo et al, 2007) and other authors (Song and Tak, 2003;Mantha et al, 2007;Prakash et al, 2006) taking into account thermal-hydraulic constraints and irradiation effects (Vladimirov and Moslang, 2006). In this paper, a multi-physics approach is presented for the analysis of the operation conditions of spallation source Windows for ADS prototypes (PDS-XADS and XT_ADS under study in 6th and 7th European Framework Program).…”

Section: Introductionmentioning

confidence: 99%