Numerical Simulation on Thermal Stress and Magnetic Forces of Current Leads in BEPC II

摘要

Six pairs of low current leads are used for the superconducting interaction quadruple magnets (SCQ) in the Beijing Electron Positron Collider Upgrade (BEPCII). This paper presents analyses on the magnetic field induced by the current lead bundle as well as the magnetic forces on the leads. The thermal stress of the single lead is investigated. The stress of interference fitting for a novel insulator used for the current leads at various operating temperatures is analyzed.