Forces caused by vacuum spring bellows during pumping of the quadrupole magnet module

摘要

The paper is focused on effect of forces induced by vacuum bellows due to differential pressure inside and outside of the bellows. This phenomenon can develop stress into rest of the vacuum system. In case of the beam pipe in NICA booster synchrotron bellow forces developed bending moment and there is a risk of the beam pipe destruction. The problem is analysed and FEA analysis is prepared. Due to unknown bellow stiffness between beam pipe modules in FEA analysis the experimental measurement is necessary.