X-Ray Camera Tube with SEC Target

Publisher Summary This chapter discusses the various aspects of x-ray camera tube with secondary electron conduction (SEC) target. In modern medical X-ray diagnostics, the combination of an X-ray image intensifier with a closed circuit television system has become an important aid to fluoroscopy. In an effort to reduce the number of transfer stages, a tube was constructed and evaluated. In this tube the electron image was transferred directly into a charge-storage pattern in SEC target, thus eliminating the output screen and the optical transfer lens of the conventional system. In order to economize the development efforts, existing production parts for the X-ray image intensifier and the reading and target section of an SEC camera tube were used as far as practical. An optimum match between the various components was therefore not necessarily achieved. It is found that the good storage capability of the SEC target permits signal integration over long periods, so that the quantum noise can be reduced for controlled integration intervals.