A system and method are provided for performing storage operations relating to a first secondary copy of electronic data. The fiber optic ribbon includes a plurality of optical fibers held together by a primary matrix. A first ring element coupled to the cup prevents movement relative to the cup in a central axis direction. A display terminal is supported by the frame and disposed behind the detector module with respect to the direction of x-ray beam travel. The blocker has a tear-drop shape plate retained around its edge in grooves in the mask and attached to a flexible strip extending along the outside of the assembly.