SILICON PHOTOMULTIPLIERS WITH DIGITIZED MICRO-CELLS
First Claim
1. A silicon photomultiplier array comprising:
- a plurality of microcells fabricated on a semiconductor wafer, each microcell including a photon avalanche diode and an electronic circuit; and
the electronic circuit configured to provide a first one-shot pulse and a second one-shot pulse based on a detected current flowing through the photon avalanche diode of each respective microcell.
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Abstract
A silicon photomultiplier array of microcells including a photon avalanche diode and an electronic circuit configured to provide a first one-shot pulse and a second one-shot pulse based on a detected current flowing through the photon avalanche diode. The microcells arranged in rows and columns with each microcell of a respective row connected to a respective row data bus connected to a row counter configured to count one or more first one-shot pulses for a predetermined time period, a pixel adder configured to sum the count, and a digital-to-analog converter connected to the pixel adder to convert sum to an analog signal representative of an energy readout. A timing logic circuit configured to provide a validation signal to a counter control logic circuit, and the counter control logic circuit configured to provide one of a start signal, a stop signal, and a reset signal to the row counter.
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Citations
20 Claims
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1. A silicon photomultiplier array comprising:
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a plurality of microcells fabricated on a semiconductor wafer, each microcell including a photon avalanche diode and an electronic circuit; and the electronic circuit configured to provide a first one-shot pulse and a second one-shot pulse based on a detected current flowing through the photon avalanche diode of each respective microcell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification