wherein {HEAD ~ said magnetic circuit} comprises {TAIL ~ a magnetic field induction circuit} formed as a thin film of the same superconducting material that is contained within said gap 
comprises
wherein { HEAD ~ said magnetic circuit } comprises { TAIL ~ a magnetic field induction circuit } formed as a thin film of the same superconducting material that is contained within said gap
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH