Pickup coil optimization for polarized 3He system X. Q. Tu, H. Zheng, G. A. Sun, J. Gong, Y. Ren, L. J. Liu, P. L. Gao, W. Z. Wang and H. Yan Eur. Phys. J. Plus, 132 7 (2017) 308 Published online: 17 July 2017 DOI: 10.1140/epjp/i2017-11580-y