A time-domain pulse amplitude and width discrimination method for photon counting

• Autorzy: del Mar Correa M. , Pérez F. R.

Identyfikatory

DOI

10.24425/119557

• Języki publikacji: EN

Abstrakty

EN

This work shows a time-domain method for the discrimination and digitization of parameters of voltage pulses coming from optical detectors, taking into account the presence of electronic noise and afterpulsing. Our scheme is based on an FPGA-based time-to-digital converter as well as an adjustable-threshold comparator complemented with commercial elements. Here, the design, implementation and optimization of a multiphase TDC using delay lines shorter than a single clock period is also described. The performance of this signal processing system is discussed through the results from the statistical code density test, statistical distributions of measurements and information gathered from an optical detector. Unlike dual voltage threshold discriminators or constant-fraction discriminators, the proposed method uses amplitude and time information to define an adjustable discrimination window that enables the acquisition of spectra.

Słowa kluczowe

EN

field-programmable gate array; time-to-digital converter; spectroscopy; photomultiplier; photon counting; discriminator; after-pulsing; low-voltage differential signalling

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2018
• Tom: Vol. 25, nr 2
• Strony: 269--282
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr., wzory

Twórcy

autor

del Mar Correa M.

• Universidad Pontificia Bolivariana, Centro de Ciencia Básica, Grupo de Óptica y Espectroscopía, Circular 1 70-01, Medellín, Colombia

autor

Pérez F. R.

• Universidad Pontificia Bolivariana, Centro de Ciencia Básica, Grupo de Óptica y Espectroscopía, Circular 1 70-01, Medellín, Colombia

Bibliografia

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• [21] Ibid, 47-53.
• [22] Ibid, 89-91.
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Uwagi

EN

1. The authors thank Jean-Pierre Galaup from the Aimé Cotton Laboratory at the CNRS for providing valuable feedback throughout this work, and Angel Salazar from Universidad Pontificia Bolivariana for fruitful discussions. Also, we acknowledge the financial support given by Colciencias for the junior researcher grants awarded during 2013 and 2014, and Universidad Pontificia Bolivariana for the scholarship to pursue graduate studies.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).