Response of G-NUMEN LaBr3(Ce) detectors to high counting rates

GANDOLFO, ELISA M.; OLIVEIRA, JOSE R.B.; CAMPAJOLA, LUIGI; PIERROUTSAKOU, DIMITRA; BOIANO, ALFONSO; AGODI, CLEMENTINA; CAPPUZZUELLO, FRANCESCO; CARBONE, DIANA; CAVALLARO, MANUELA; CIRALDO, IRENE; CALVO, DANIELA; DELAUNAY, FRANCK; EKE, CANEL; LONGHITANO, FABIO; MEDINA, NILBERTO; MORALLES, MAURICIO; SARTIRANA, DIEGO; SHARMA, VIJAY R.; SAPATAFORA, ALESSANDRO; TOUFEN, DENNIS; FINOCCHIARO, PAOLO

Response of G-NUMEN LaBr3(Ce) detectors to high counting rates

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2023

Autores IPEN

MAURICIO MORALLES

NILBERTO HEDER MEDINA

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Resumo

The G-NUMEN array is the future gamma spectrometer of the NUMEN experiment (nuclear matrix element for neutrinoless double beta decay), to be installed around the object point of the MAGNEX magnetic spectrometer at the INFN-LNS laboratory. This project aims to explore doublecharge exchange (DCE) reactions in order to obtain crucial information about neutrinoless double beta decay (0νββ). The primary objective of the G-NUMEN array is to detect the gamma rays emitted from the de-excitation of the excited states that are populated via DCE reactions with a good energy resolution and detection efficiency, amidst a background composed of the transitions from competing reaction channels with far higher cross sections. To achieve this, G-NUMEN signals will be processed in coincidence with those generated by the detection of reaction ejectiles by the MAGNEX focal plane detector (FPD). Under the expected experimental conditions, G-NUMEN detectors will operate at high counting rates, of the order of hundreds of kHz per detector, while maintaining excellent energy and timing resolutions. The complete array will consist of over 100 LaBr3 (Ce) scintillators. Initial tests were conducted on the first detectors of the array, allowing for the determination of their performance at high rates.

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GANDOLFO, ELISA M.; OLIVEIRA, JOSE R.B.; CAMPAJOLA, LUIGI; PIERROUTSAKOU, DIMITRA; BOIANO, ALFONSO; AGODI, CLEMENTINA; CAPPUZZUELLO, FRANCESCO; CARBONE, DIANA; CAVALLARO, MANUELA; CIRALDO, IRENE; CALVO, DANIELA; DELAUNAY, FRANCK; EKE, CANEL; LONGHITANO, FABIO; MEDINA, NILBERTO; MORALLES, MAURICIO; SARTIRANA, DIEGO; SHARMA, VIJAY R.; SAPATAFORA, ALESSANDRO; TOUFEN, DENNIS; FINOCCHIARO, PAOLO. Response of G-NUMEN LaBr3(Ce) detectors to high counting rates. Instruments, v. 7, n. 3, p. 1-17, 2023. DOI: 10.3390/instruments7030028. Disponível em: http://repositorio.ipen.br/handle/123456789/34241. Acesso em: 12 May 2024.

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