Pixel array detectors for time resolved radiography (invited)

M. J. Renzi, M. W. Tate, A. Ercan, S. M. Gruner, E. Fontes, C. F. Powell, A. G. MacPhee, S. Narayanan, J. Wang, Y. Yue, R. Cuenca
2002 Review of Scientific Instruments  
Intense x-ray sources coupled with efficient, high-speed x-ray imagers are opening new possibilities of high-speed time resolved experiments. The silicon pixel array detector ͑PAD͒ is an extremely flexible technology which is currently being developed as a fast imager. We describe the architecture of the Cornell PAD, which is capable of operating with submicrosecond frame times. This 100 ϫ92 pixel prototype PAD consists of a pixelated silicon diode layer, for direct conversion of the x rays to
more » ... harge carriers, and a corresponding pixellated complementary metal-oxide-semiconductor electronics layer, for processing and storage of the generated charge. Each pixel diode is solder bump bonded to its own pixel electronics consisting of a charge integration amplifier, an array of eight storage capacitors and an output amplifier. This architecture allows eight complete frames to be stored in rapid succession, with a minimum integration time of 150 ns per frame and an interframe deadtime of 600 ns. We describe the application of the PAD to capture an x-radiograph movie of the mass-density distribution of the spray plume from internal combustion engine fuel injectors.
doi:10.1063/1.1435816 fatcat:5vzh6o25wrfujgnjrtxg53napa