A method is provided for controlling a light-sensitive device, for example, a digital X-ray detector including an array of light-sensitive points. The receiving container is attached to the alignment plate which has the lamp socket inserted through the socket insertion hole, and a portion of the lamp socket is exposed outside the receiving container through the socket insertion hole when the receiving container is attached to the alignment plate. The plurality of twisted conductor pairs defines a cable core. The multi-string tubing system consists of two or more tubing conduits, allowing surface pump equipment to deliver power fluid to the jet pump down a supply tubing string, while return fluid is returned up a return tubing string.