Thermal shock measurements and modelling for solid high-power targets at high temperatures

Bennett, J.R.J.; Škoro, G.; Booth, C. N.; Brooks, Stephen J.; Brownsword, Richard A.; Edgecock, R.; Densham, C.; Gray, Simon; McFarland, A.; Simos, N.; Wilkins, Daniel

doi:10.1016/j.jnucmat.2008.02.044

Cited by 15 publications

(15 citation statements)

References 6 publications

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“…Compared to tungsten, tantalum seems to have a lower resistance to thermal stresses because of its low yield strength at high temperatures. This is in agreement with previous comparative studies of tungsten and tantalum targets reported in [6,7]. Beryllium was found to have the highest rate of thermal resistance decrease over the temperature range, where data was available.…”

Section: Thermal Stressessupporting

confidence: 92%

“…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%

See 1 more Smart Citation

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 Stressessupporting

confidence: 92%

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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“…A similar approach was presented by Bennett et al [6,10] in which the energy calculation, resulting from high-energy particles beam impact with a solid material, was performed using the MARS code. From the energy map the temperature rise was calculated and used in LS-DYNA (for explicit analyses) or ANSYS (for implicit analyses) codes to calculate the dynamic stresses in the target.…”

Section: Case Study and Numerical Modelmentioning

confidence: 99%

“…LS-DYNA is a general purpose transient dynamic finite element program including an implicit and explicit solver with thermo-mechanical and highly non-linear capabilities. This code is often used to solve impact problems also for nuclear applications and particle accelerator technology [5][6][7]. For the simulations the chosen equation of state is a polynomial form, in which the coefficients are obtained fitting a multi-phase tabular equation of state, and the material model is the Johnson-Cook model.…”

Section: Introductionmentioning

confidence: 99%

Effects induced by LHC high energy beam in copper structures

Scapin

Peroni

Dallocchio

2012

Journal of Nuclear Materials

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a b s t r a c tThis study is performed in order to estimate the damage on copper components due to the impact of a 7 TeV proton beam in the Large Hadron Collider. The case study represents an accidental case consequent to an abnormal release of the beam, in which eight bunches impact directly the copper. The energy delivered on the components is calculated by the FLUKA Team at CERN using their Monte-Carlo code for calculation of particle transport and interactions with matter. The energy maps are used by the authors as input for the structural simulations carried out via the FEM code LS-DYNA. The evolution of the phenomenon is quite similar to what might happen during an explosion. The impacted part of the component reaches extremely high values of pressure and temperature and undergoes changes of state. The sudden increase in pressure originates outgoing shockwaves that, travelling through the component, lead to a substantial density reduction in the impacted part. The energy delivered on the component is sufficient to severely damage the target.

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“…At the working temperature of the target (∼ 1 200 • C), tantalum is not strong enough. However, it has been demonstrated that the lifetime of tungsten is more than sufficient [465]. To verify this outcome, it is planned to test real tungsten targets in a proton beam of high energy density at CERN in 2011.…”

Section: Solid Targetmentioning

confidence: 99%