CAJ | 학술논문

为解决磁屏蔽筒制约原子自旋磁强计灵敏度的问题，通过改进多层磁屏蔽筒轴向系数公式获得磁屏蔽筒参数优化模型，并在仅改变一项参数而其他参数固定的条件下，依据优化模型，利用Matlab软件对各参数对轴向屏蔽系数的影响程度进行仿真．结果表明：随着最内层筒半径、筒长及径向层间距的增大，轴向屏蔽系数迅速减小；轴向间隙越大，则屏蔽系数越大．根据仿真结果及实际应用需要优化设计磁屏蔽筒参数，并利用Ansoft软件对优化筒和非优化筒的屏蔽效果进行仿真．结果表明，在外界磁场相同的情况下，未优化和经优化设计的磁屏蔽筒屏蔽能效分别约为152．1和158．6 dB．因此，通过参数优化模型可获得体积小、质量轻、成本低、屏蔽性能大的磁屏蔽筒．
위해결자병폐통제약원자자선자강계령민도적문제，통과개진다층자병폐통축향계수공식획득자병폐통삼수우화모형，병재부개변일항삼수이기타삼수고정적조건하，의거우화모형，이용Matlab연건대각삼수대축향병폐계수적영향정도진행방진．결과표명：수착최내층통반경、통장급경향층간거적증대，축향병폐계수신속감소；축향간극월대，칙병폐계수월대．근거방진결과급실제응용수요우화설계자병폐통삼수，병이용Ansoft연건대우화통화비우화통적병폐효과진행방진．결과표명，재외계자장상동적정황하，미우화화경우화설계적자병폐통병폐능효분별약위152．1화158．6 dB．인차，통과삼수우화모형가획득체적소、질량경、성본저、병폐성능대적자병폐통．
To solve the problem that the sensitivity of atomic spin magnetometer is restricted by mag-netic shielding cylinders,the parameter optimization models of magnetic shielding cylinders are de-signed by improving the axial coefficient formula of multilayered magnetic shielding cylinders.With the change of one parameter while the others keep fixed,according to the optimization models,the influences of parameters on the axial shielding factor are simulated by using Matlab software.The simulation results show that with the increase of the innermost radius,innermost length and radial gap,the axial shielding factor decreases quickly.The larger the axial clearance,the greater the shielding factor.According to the simulation results and the practical application needs,the parame-ters of magnetic shielding cylinders are optimized.The comparison of the shielding effects between the non-optimized and optimized magnetic shielding cylinders is carried out by Ansoft software.The results show that under the same external magnetic field,the shielding effectiveness of the non-opti-mized and optimized magnetic shielding cylinders are about 152.1 and 158.6 dB,respectively. Therefore,by the parameter optimization models,the magnetic shielding cylinders with small size, light weight,low cost,and great performance can be obtained.