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	Charge reconstruction in large-area photomultipliers
	Grassi, M.; Montuschi, M.; Baldoncini, M.; Mantovani, F.; Ricci, B.; Andronico, G.; Antonelli, V.; Bellato, M.; Bernieri, E.; Brigatti, A.; Brugnera, R.; Budano, A.; Buscemi, M.; Bussino, S.; Caruso, R.; Chiesa, D.; Corti, D.; Dal Corso, F.; Ding, X. F.; Dusini, S.; Fabbri, A.; Fiorentini, G.; Ford, R.; Formozov, A.; Galet, G.; Garfagnini, A.; Giammarchi, M.; Giaz, A.; Insolia, A.; Isocrate, R.; Lippi, I.; Longhitano, F.; Lo Presti, D.; Lombardi, P.; Marini, F.; Mari, S. M.; Martellini, C.; Meroni, E.; Mezzetto, M.; Miramonti, L.; Monforte, S.; Nastasi, M.; Ortica, F.; Paoloni, A.; Parmeggiano, S.; Pedretti, D.; Pelliccia, N.; Pompilio, R.; Previtali, E.; Ranucci, G.; Re, A. C.; Romani, A.; Saggese, P.; Salamanna, G.; Sawy, F. H.; Settanta, G.; Sisti, M.; Sirignano, C.; Spinetti, M.; Stanco, L.; Strati, V.; Verde, G.; Votano, L.
	2018
Source Publication	JOURNAL OF INSTRUMENTATION
ISSN	1748-0221
Volume	13
ItemNo	IHEP00009033
Subtype	Article
Abstract	Large-area PhotoMultiplier Tubes (PMT) allow to efficiently instrument Liquid Scintillator (LS) neutrino detectors, where large target masses are pivotal to compensate for neutrinos' extremely elusive nature. Depending on the detector light yield, several scintillation photons stemming from the same neutrino interaction are likely to hit a single PMT in a few tens/hundreds of nanoseconds, resulting in several photoelectrons (PES) to pile-up at the PMT anode. In such scenario, the signal generated by each PE is entangled to the others, and an accurate PMT charge reconstruction becomes challenging. This manuscript describes an experimental method able to address the PMT charge reconstruction in the case of large PE pile-up, providing an unbiased charge estimator at the permille level up to 15 detected PES. The method is based on a signal filtering technique (Wiener filter) which suppresses the noise due to both PMT and readout electronics, and on a Fourier-based deconvolution able to minimize the influence of signal distortions - such as an overshoot. The analysis of simulated p m t waveforms shows that the slope of a linear regression modeling the relation between reconstructed and true charge values improves from 0.769 +/- 0.001 (without deconvolution) to 0.989 +/- 0.001 (with deconvolution), where unitary slope implies perfect reconstruction. A C++ implementation of the charge reconstruction algorithm is available online at [1].
Keyword	Calorimeter methods Liquid detectors Photon detectors for UV, visible and IR photons (vacuum) (photomultipliers HPDs, others) Scintillators, scintillation and light emission processes (solid gas and liquid scintillators)
Subject Area	Instruments & Instrumentation
DOI	10.1088/1748-0221/13/02/P02008
Indexed By	ADS
Language	英语
WOS ID	WOS:000424193900001
ADS Bibcode	2018JInst..13P2008G
ADS URL	https://ui.adsabs.harvard.edu/abs/2018JInst..13P2008G
ADS CITATIONS	https://ui.adsabs.harvard.edu/abs/2018JInst..13P2008G/citations
Citation statistics	Cited Times:2 [ADS]
Document Type	期刊论文
Identifier	http://ir.ihep.ac.cn/handle/311005/297494
Collection	江门中微子实验
Recommended Citation GB/T 7714	Grassi, M.,Montuschi, M.,Baldoncini, M.,et al. Charge reconstruction in large-area photomultipliers[J]. JOURNAL OF INSTRUMENTATION,2018,13.
APA	Grassi, M..,Montuschi, M..,Baldoncini, M..,Mantovani, F..,Ricci, B..,...&Votano, L..(2018).Charge reconstruction in large-area photomultipliers.JOURNAL OF INSTRUMENTATION,13.
MLA	Grassi, M.,et al."Charge reconstruction in large-area photomultipliers".JOURNAL OF INSTRUMENTATION 13(2018).

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