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We propose SOI pixel circuits with a synchronized time memory cell (TMC) fortime-of-flight stigmatic imaging mass spectrometry. The circuits simultaneouslydetect the position and the fine/coarse flight time of an ion for the MALDI-ToFmass spectrometer. We discuss the circuit design and present the simulationresults of a prototype detector comprised of a 32 x 32 pixel array in whicheach pixel pitch is 40 um and the time resolution is a minimum of 1 ns. Theresults of transient analysis demonstrate the fully correct synchronousoperation at a 100-MHz clock frequency and simultaneous 32-word SRAM writing.

SOI pixel circuits with synchronized TMC for time-of-flight stigmatic imaging mass spectrometry