A retention assembly comprises a hinged load plate configured for rotational closure over a component and compression of a pre-compressed spring that distributes force of the spring across the component in tool-less retention of the component. The pusher shoes are generally separated from each other and the travel of direction by a shoe pitch. Printing any of the ink-jet ink sets onto the specially-prepared paper improves resolution, color retention, waterfastness, smear-fastness, image retention and image density while decreasing image bleed in ink-jet printing. In case of emitting the charged particle beam out of the circular accelerator, the change of a tune attributed to the change of the beam orbit can be statically corrected, the tune is linearly changed, and an adjustment of the emission of the beam becomes easy. Broad voltage and current capabilities of the configuration inexpensively improve transient drive of highly reactive loads.