Stress Analysis of an Electromagnetic Horn
An electromagnetic horn is a device used in particle physics to produce a strong pulsed toroidal magnetic field and to focus charged particles toward a detector. A multiphysics analysis is performed to assess the stress level inside the horn structure. In steady state regime, the horn is submitted to a thermal static stress due to thermal dilatation.
Then, every 80 ms a strong magnetic field is produced in synchronization with the proton beam pulse. This creates a pulsed magnetic pressure exerting on the horn wall. The total displacement (see Fig 3) and von mises stress are obtained by solving a transient mechanical Comsol model with a magnetic pressure load and with the initial displacement field due to thermal dilatation obtained with a static thermo mechanical model.