X-ray analog pixel array detector for single synchrotron bunch time-resolved imaging

Details X-ray analog pixel array detector for single synchrotron bunch time-resolved imaging X-ray analog pixel array detector for single synchrotron bunch time-resolved imaging

2010-07-26

arxiv.org/abs/1007.4576v1

Physics

Instrumentation and Detectors

9 pages, 11 figures

Scientific paper

Dynamic x-ray studies may reach temporal resolutions limited by only the x-ray pulse duration if the detector is fast enough to segregate synchrotron pulses. An analog integrating pixel array detector with in-pixel storage and temporal resolution of around 150 ns, sufficient to isolate pulses, is presented. Analog integration minimizes count-rate limitations and in-pixel storage captures successive pulses. Fundamental tests of noise and linearity as well as high-speed laser measurements are shown. The detector resolved individual bunch trains at the Cornell High Energy Synchrotron Source (CHESS) at levels of up to 3.7x10^3 x-rays/pixel/train. When applied to turn-by-turn x-ray beam characterization single-shot intensity measurements were made with a repeatability of 0.4% and horizontal oscillations of the positron cloud were detected. This device is appropriate for time-resolved Bragg spot single crystal experiments.

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