In a tokamak, there are toroidal and poloidal fields created by separate sources. The resultant picture typically visualized are helical field lines in the tokamak. I am simply wondering: is this a superposition of the underlying toroidal and poloidal fields, or are these different field lines actually reconnecting? Perhaps this is stemming from my lack of a definition for magnetic reconnection. Is it only considered reconnection if the magnetic field lines are antiparallel and/or create a null point?
Your guess is correct: this is simply the superposition of the toroidal and poloidal magnetic field components. Magnetic reconnection, where magnetic energy is converted into kinetic and/or thermal energy, is actually the break-up and subsequent reconnection of oppositely directed magnetic field lines.