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1. EP2746817 - Readout circuits for multi-channel photomultiplier arrays

Office European Patent Office
Application Number 12382516
Application Date 20.12.2012
Publication Number 2746817
Publication Date 25.06.2014
Publication Kind A1
IPC
G01T 1/24
GPHYSICS
01MEASURING; TESTING
TMEASUREMENT OF NUCLEAR OR X-RADIATION
1Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
16Measuring radiation intensity
24with semiconductor detectors
CPC
G01T 1/248
GPHYSICS
01MEASURING; TESTING
TMEASUREMENT OF NUCLEAR OR X-RADIATION
1Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
16Measuring radiation intensity
24with semiconductor detectors
248Silicon photomultipliers [SiPM], e.g. an avalanche photodiode [APD] array on a common Si substrate
Applicants UNIV BARCELONA
CT INVESTIG ENERGETICAS CIEMAT
Inventors GASCON FORA DAVID
COMERMA MONTELLS ALBERT
FREIXAS COROMINA LLUÍS
Designated States
Priority Data 12382516 20.12.2012 EP
Title
(DE) Ausleseschaltungen für Fotovervielfacherarrays mit mehreren Kanälen
(EN) Readout circuits for multi-channel photomultiplier arrays
(FR) Circuits de lecture pour réseaux de photomultiplicateur multi-canaux
Abstract
(EN)
A readout circuit for multi-channel photomultiplier arrays, such as SiPM arrays, is proposed. It comprises a current mode input stage (15) with distinct gain paths. The current mode input stage (15) comprises a dual loop feedback circuit (40, 50). The first feedback is a high frequency loop feedback (40) and the second is a low frequency feedback circuit (50). The resulting readout circuit is a wideband readout circuit with improved resolution of timing and energy measurements. Furthermore, a dedicated pile-up measurement path (300) allows independent detection of pile-up readings.

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