Measurement of performance of the NectarCAM photodetectors

A. Tsiahina; P. Jean; J.-F. Olive; Jürgen Knödlseder; C. Marty; T. Ravel; C. Jarnot; B. Biasuzzi; J. Bolmont; F. Brun; S. Caroff; E. Delagnes; S. Fegan; G. Fontaine; D. Gascon; J.-F. Glicenstein; D. Hoffmann; S. Karkar; J.-P. Lenain; J. Paredes; P.-O. Petrucci; J. Prast; M. Ribó; S. Rivoire; A. Sanuy; P. Sharma; T. Suomijarvi; L.A. Tejedor; F. Toussenel

doi:10.1016/j.nima.2021.165413

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Measurement of performance of the NectarCAM photodetectors

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Measurement of performance of the NectarCAM photodetectors

A. Tsiahina, P. Jean, J.-F. Olive, Jürgen Knödlseder, C. Marty, T. Ravel, C. Jarnot, B. Biasuzzi, J. Bolmont, F. Brun, …

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol.1007

2021

DOI: https://doi.org/10.1016/j.nima.2021.165413

Abstract

Gamma-ray astronomy

Cherenkov telescope

Photo multiplier tube

NectarCAM is a camera for the medium-sized telescopes of the Cherenkov Telescope Array (CTA), which covers the energy range of 100 GeV to 30 TeV. The camera is equipped with 265 focal plane modules (FPMs). Each FPM comprises 7 pixels, each consisting of a photo-multiplier tube, a preamplifier, an independently controlled power supply, and a common control system. We developed a dedicated test bench to validate and qualify the industrial FPM production and to measure the performance of each FPM in a dark room before its integration in the camera. We report the measured performance of 61 FPM prototypes obtained with our experimental setup. We demonstrate that the gains of the photo multiplier tubes are stable and that pulse widths, transit time spreads, afterpulse rates and charge resolutions are within the specifications for NectarCAM.

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Title: Measurement of performance of the NectarCAM photodetectors
Creators - without role: A. Tsiahina - Institut de Recherche en Astrophysique et Planétologie
P. Jean - Institut de Recherche en Astrophysique et Planétologie
J.-F. Olive - Institut de Recherche en Astrophysique et Planétologie
Jürgen Knödlseder - Institut de Recherche en Astrophysique et Planétologie
C. Marty - Institut de Recherche en Astrophysique et Planétologie
T. Ravel - Institut de Recherche en Astrophysique et Planétologie
C. Jarnot - Institut de Recherche en Astrophysique et Planétologie
B. Biasuzzi - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
J. Bolmont - Laboratoire de Physique Nucléaire et de Hautes Énergies
F. Brun - Institut de Recherche sur les Lois Fondamentales de l'Univers
S. Caroff - Laboratoire de Physique Nucléaire et de Hautes Énergies
E. Delagnes - Institut de Recherche sur les Lois Fondamentales de l'Univers
S. Fegan - Laboratoire Leprince-Ringuet
G. Fontaine - Laboratoire Leprince-Ringuet
D. Gascon - Universitat de Barcelona
J.-F. Glicenstein - CEA Paris-Saclay
D. Hoffmann - Centre de physique des particules de Marseille
S. Karkar - Laboratoire de Physique Nucléaire et de Hautes Énergies
J.-P. Lenain - Laboratoire de Physique Nucléaire et de Hautes Énergies
J. Paredes - Universitat de Barcelona
P.-O. Petrucci - Institut de Planétologie et d'Astrophysique de Grenoble
J. Prast - Laboratoire d’Annecy de Physique des Particules
M. Ribó - Universitat de Barcelona
S. Rivoire - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
A. Sanuy - Universitat de Barcelona
P. Sharma - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
T. Suomijarvi - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
L.A. Tejedor - Universidad Complutense de Madrid
F. Toussenel - Laboratoire de Physique Nucléaire et de Hautes Énergies
Publication Details: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol.1007
Identifiers: 9941225209311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: hal-03238822