Measurement and Optimizing of Magnetic Field for High Mass Resolution Analysis Magnet

作者：TANG Bing; MA Rui gang; CUI Bao qun; CHEN Li hua; MA Ying jun; HUANG Qing hua; MA Xie; JIANG Wei sheng

来源：原子能科学技术, 2015, z2.

DOI：10.7538/yzk.2015.49.S1.0560

• dipole
• field measurement
• surface coil

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 .

• 单位
  中国原子能科学研究院; 中国原子能 科学研究院; 北京