There is described a reactor for manufacturing a semiconductor device. The invention further includes at least one metal plate disposed near an upper side of the magnet as well as appropriate means for securing the magnet and the metal plate to the fuel line. The shared object space restricts simultaneous access to data objects by the concurrently running applications by associating locks with the data objects. The insulating material between the elements is air or plastic, for example. When an urging force is applied on the upper base member, the second electrically conductive body is urged toward the first electrically conductive body. Cutting the plate in such a manner results in the creation of openings through the plate, said openings when viewed together forming a decorative pattern.