Speaker
Description
The rapid interaction of highly energetic particle beams with matter induces dynamic responses in the impacted body. If the beam pulse is sufficiently intense, extreme conditions can be reached such as very high pressures, changes of material density, phase transitions, intense stress waves, material fragmentation and explosions. Even at lower intensities and on longer time scales, significant effects may be induced such as vibrations, large oscillations and permanent deformations on the impacted components.
Advanced simulation codes permit to analyse extremely complex thermo-mechanical phenomena; however, to provide reliable results, they require constitutive models sufficiently accurate for all the conditions that materials may reach during such events.
Unfortunately, the constitutive material models, in particular at the extreme conditions generated by high-energy beam impacts and for unconventional materials, are far from being readily available and experimentally validated. Besides, numerical simulations cannot easily predict consequences of beam accidents on nearby elements, on UHV performance, on electronics, etc.
Only in-beam material tests in dedicated facilities such as HiRadMat can qualify critical equipment and provide the correct inputs for numerical analyses, allowing to benchmark and validate simulations on simple specimens as well as on full-scale, complex structures.
This presentation provides an introduction to the mechanisms governing the thermo-mechanical phenomena induced by the interaction between particle beams and solids and to the analytical and numerical methods that are available to assess the response of the impacted components.
An overview of the experimental tests required to validate materials and devices exposed to the interaction with energetic particle beams is also provided.
