Abstract
The projected range of high-intensity proton and heavy-ion beams at energies below a few tens of MeV/A in matter can be as short as a few micrometers. For the evaluation of temperature and stresses from a shallow beam energy deposition in matter conventional numerical 3D models require minuscule element sizes for acceptable element aspect ratio as well as extremely short time steps for numerical convergence. In order to simulate energy deposition using a manageable number of elements this article presents a method using layered elements. This method is applied to beam stoppers and accidental intense-beam impact onto UHV sector valves. In those cases the thermal results from the new method are congruent to those from conventional solid-element and adiabatic models.
Highlights
Accelerator facilities broadly employ beam intercepting devices such as beam dumps [1], collimators [2] and beam instruments [3]
The thermal gradients induced by the interaction of a particle beam and matter are simulated through finite element models [6]
Tight thermal loading is discussed in [7], which compares the results of a solid, a shell-solid and a multilayered shell model with those of experiments on laser forming of a 2-mm-thick stainless steel plate
Summary
Accelerator facilities broadly employ beam intercepting devices such as beam dumps [1], collimators [2] and beam instruments [3]. For relatively short-ranged interactions such as those of heavy ions [4] or high-intensity particle beam at energies of few MeV/A a tight range profile in the range smaller than a millimeter is observed [5]. The thermal gradients induced by the interaction of a particle beam and matter are simulated through finite element models [6]. Another work [8] uses thermomechanical models for multilayered optical coatings in which several layered shells are stacked and coupled to a substrate. Both works do not treat thickness-dependent profiles of heat loading characteristic of beam-energy deposition in matter
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