【摘要】 针对超导量子磁传感器在微弱磁通变化探测中的性能提升的问题，对超导量子干涉磁传感器的多个变量进行优化，通过数值分析和Python的仿真方法完成优化验证。仿真结果表明：八边形垫圈几何敏感度最低，更有利于后续电路耦合；迈斯纳效应下，磁通量以及屏蔽电流大小在内径为200μm达到最优，垫圈边缘磁通量为5.7μT,且垫圈各处屏蔽电流稳定，没有异常峰。然后，对优化后双垫圈设计多参量分析，双垫圈之间互感可导致电感下降约3%。双垫圈型DC超导量子干涉器件(SQUID)的仿真实验在外加磁场条件下展现了其卓越的磁场屏蔽效果，证明了优化设计的有效性。本文为高精度量子测量设备的设计提供了重要的理论依据和实际应用指导。更多还原

【Abstract】 Aiming at improving the performance of superconducting quantum magnetic sensors in detection of weak magnetic flux changes, multiple variables of superconducting quantum interference magnetic sensors are optimized, and the optimization verification is achieved through numerical analysis and Python-based simulations.The simulation results indicate that the octagonal washer exhibits the lowest geometric sensitivity, which is more conducive to subsequent circuit coupling.Under the Meissner effect, the optimal magnetic flux and shielding current are achieved with an inner diameter of 200 μm, where the washer edge magnetic flux is 5.7 μT,and the shielding currents at various parts of the washer are stable without anomalous peaks.Subsequently, multi-parameter analysis of the optimized dual-washer design shows that the mutual inductance between the two washers can cause an inductance decrease of about 3 %.Simulation experiments of the dual-washer DC superconducting quantum interference device(SQUID) show excellent magnetic shielding effect under external magnetic field conditions, proving the effectiveness of the optimized design.This study provides important theoretical basis and practical guidance for the design of high-precision quantum measurement devices.更多还原