The other main fusion journals to follow are:
Plasma Physics and Controlled Fusion (PPCF) http://iopscience.iop.org/0741-3335
Physics of Plasmas (POP) http://scitation.aip.org/content/aip/journal/pop
and to a certain extent the more general
Physics Review Letters (PRL) http://journals.aps.org/prl/
James