CAJ | 학술논문

串列加速器升级工程在线同位素分离器（BRISOL ）需对同质异位素进行分辨，谱仪设计质量分辨率为20000。本文介绍了BRISOL分析磁铁的磁场测量及垫补。为达到20000的质量分辨率，BRISOL谱仪采用由2块小铁和2块大铁组成的异能大、小铁结构消除能量色散。主分析磁铁磁场均匀性要求好于5×10－5，采用表面线圈对磁场进行垫补。垫补后，好场区范围内积分场均匀性由3×10－4提高到了3.5×10－5。
천렬가속기승급공정재선동위소분리기（BRISOL ）수대동질이위소진행분변，보의설계질량분변솔위20000。본문개소료BRISOL분석자철적자장측량급점보。위체도20000적질량분변솔，BRISOL보의채용유2괴소철화2괴대철조성적이능대、소철결구소제능량색산。주분석자철자장균균성요구호우5×10－5，채용표면선권대자장진행점보。점보후，호장구범위내적분장균균성유3×10－4제고도료3.5×10－5。
The mass resolution of Beijing Radioactive Ion Beam Facility Isotope Separa‐tor On‐line (BRISOL) is 20 000 for the separation of isobar beam .The field measure‐ments and field optimizing were presented in this paper in detail .To reach the high mass resolution power of 20 000 ,a bi‐energy system with two small dipoles and two big dipoles was used to reduce energy dispersion which is too large to get high mass resol‐ution power .The magnetic field uniformity of the analysis magnet must be better than 5 × 10-5 .The surface coils were set on pole face to improve the magnetic field homoge‐neity .The integral field uniformity with surface coil was optimized from 3 × 10-4 to 3.5×10-5 .