One-dimensional numerical simulation of shock wave propagation induced by vacuum accidents in a beamline

摘要

A simulation for shock wave propagation in a vacuum tube has been conducted from the viewpoint of protection from vacuum accidents in beamlines of a synchrotron radiation facility. Inserted devices in beamlines such as absorbers, slits, masks and beryllium windows were replaced with orifices installed in a shock tube as a simulation model. One-dimensional Euler's equations with friction terms were used for estimating the effects on shock wave decay as well as the effects of friction along a tube on shock attenuation.