magcoilcalc: A Python package for modeling and optimization of axisymmetric magnet coils generating uniform magnetic field for noble gas spin-polarizers. - Siqin Meng; Zhendong Fu; Jianfei Qin; Xiaobai Ma; Yuqing Li; Lijie Hao; Yuntao Liu; Kai Sun; Dongfeng Chen (SoftwareX, 2021)