Time-domain filtering of gamma events
AssigneeAvago Technologies International Sales Pte. Limited
InventorsThomas Frach, Torsten Solf, Dennis Groben
Life of this patent
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Abstract
The present application relates generally to silicon photomultiplier (SiPM) detector arrays. In one aspect, there is a system including an array of cells each including a single-photon avalanche diode (SPAD) reverse-biased above a breakdown voltage of the SPAD. The system may further include a trigger network configured to generate pulses on a trigger line in response to SPADs of the array undergoing breakdown. The system may still further include a pulse-width filter configured to block pulses on the trigger line whose pulse width is less than a threshold width.
Claims18
An optical detector, comprising:
- an array of cells each including a single-photon avalanche diode (SPAD) reverse-biased above a breakdown voltage of the SPAD;
- a trigger network configured to generate pulses on a trigger line in response to SPADs of the array undergoing breakdown, wherein the trigger network comprises a network of OR gates connecting the cells of the array with the trigger line;
- and
- a pulse-width filter configured to block pulses on the trigger line whose pulse width is less than a threshold width.
A method, comprising:
- with a trigger network, generating pulses on a trigger line in response to single-photon avalanche diode (SPADS) of the array undergoing breakdown, wherein the trigger network comprises a network of OR gates connecting cells of an array with the trigger line;
- and
- with a pulse-width filter, blocking pulses on the trigger line whose pulse width is less than a threshold width.
A trigger network for a silicon photomultiplier (SiPM) comprising an array of cells each including a single-photon avalanche diode (SPAD) reverse-biased above a breakdown voltage of the SPAD, the trigger network comprising:
- a network of OR gates connecting the cells of the array with a trigger line, the network of OR gates generating pulse on the trigger line in response to SPADs of the array undergoing breakdown;
- and
- a pulse-width filter configured to block pulses on the trigger line whose pulse width is less than a threshold width.
Dependencies are inferred from the claim text.