“…al., 1993). At the same time, the FRTP-based formation method has been significantly improved (Slough et al, 1989;Hoffman et al, 1993;Pietrzyk et al, 1987;Pierce et al, 1995;Guo et al, 2004Asai et al, 2000;Binderbauer et al, 2010;Guo, et al, 2011). Recently initiated new formation methods include (1) counter-helicity spheromakmerging (CHSM) (Yamada et al, 1990;Ono et al, 1993;Gerhardt et al 2008), (2) rotating magnetic field (RMF) (Slough & Miller, 2000;Knight & Jones, 1990;A.…”