Characterization and calibration of large area solid state photomultiplier breakdown voltage and/or capacitance
First Claim
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1. A method of characterizing a solid state photomultiplier (SSPM) comprising:
- exposing the SSPM to a light pulse that triggers a plurality of microcells of the SSPM, wherein an intensity of the light pulse generates at least two primary electron-hole pairs for each of the microcells;
processing an output signal of the SSPM generated in response to the light pulse, the output signal being proportional to a gain of the SSPM and a quantity of microcells in the SSPM;
applying a bias voltage to the SSPM to configure the plurality of microcells in a Geiger mode of operation; and
determining a value of an electrical parameter of the SSPM based on a relationship between the output signal of the SSPM and a bias voltage applied to the SSPM.
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Abstract
Exemplary embodiments are directed to characterizing a solid state photomultiplier (SSPM). The SSPM can be exposed to a light pulse that triggers a plurality of microcells of the SSPM and an output signal of the SSPM generated in response to the light pulse can be processed. The output signal of the SSPM can be proportional to a gain of the SSPM and a quantity of microcells in the SSPM and a value of an electrical parameter of the SSPM can be determined based on a relationship between the output signal of the SSPM and an over voltage applied to the SSPM.
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16 Claims
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1. A method of characterizing a solid state photomultiplier (SSPM) comprising:
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exposing the SSPM to a light pulse that triggers a plurality of microcells of the SSPM, wherein an intensity of the light pulse generates at least two primary electron-hole pairs for each of the microcells; processing an output signal of the SSPM generated in response to the light pulse, the output signal being proportional to a gain of the SSPM and a quantity of microcells in the SSPM; applying a bias voltage to the SSPM to configure the plurality of microcells in a Geiger mode of operation; and determining a value of an electrical parameter of the SSPM based on a relationship between the output signal of the SSPM and a bias voltage applied to the SSPM. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for determining an electrical parameter of a solid state photomultiplier comprising:
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a light source configured to emit light pulses at different intensities towards a solid state photomultiplier to trigger a plurality of microcells in the SSPM, wherein the different intensities of the light pulses emitted by the light source generates at least two primary electron-hole pairs for each of the microcells; circuitry configured to process an output signal of an SSPM, the output signal being proportional to a gain of the SSPM and a quantity of microcells in the SSPM; and a processing device programmed to control emission of the light pulses from the light source and control processing of the output signal by the circuitry and to determine an electrical parameter of the SSPM based on a relationship between the output signal of the SSPM and a bias voltage applied to the SSPM, wherein the application of the bias voltage configures the plurality of microcells in a Geiger mode of operation. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification