Results of the BiPo-1 prototype for radiopurity measurements for the SuperNEMO double beta decay source foils
AUGIER, C.
Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
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Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
AUGIER, C.
Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
< Réduire
Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
Langue
en
Article de revue
Ce document a été publié dans
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2010, vol. 622, p. 120-128
Elsevier
Résumé en anglais
The development of BiPo detectors is dedicated to the measurement of extremely high radiopurity in $^{208}$Tl and $^{214}$Bi for the SuperNEMO double beta decay source foils. A modular prototype, called BiPo-1, with 0.8 ...Lire la suite >
The development of BiPo detectors is dedicated to the measurement of extremely high radiopurity in $^{208}$Tl and $^{214}$Bi for the SuperNEMO double beta decay source foils. A modular prototype, called BiPo-1, with 0.8 $m^2$ of sensitive surface area, has been running in the Modane Underground Laboratory since February, 2008. The goal of BiPo-1 is to measure the different components of the background and in particular the surface radiopurity of the plastic scintillators that make up the detector. The first phase of data collection has been dedicated to the measurement of the radiopurity in $^{208}$Tl. After more than one year of background measurement, a surface activity of the scintillators of $\mathcal{A}$($^{208}$Tl) $=$ 1.5 $\mu$Bq/m$^2$ is reported here. Given this level of background, a larger BiPo detector having 12 m$^2$ of active surface area, is able to qualify the radiopurity of the SuperNEMO selenium double beta decay foils with the required sensitivity of $\mathcal{A}$($^{208}$Tl) $<$ 2 $\mu$Bq/kg (90% C.L.) with a six month measurement.< Réduire
Mots clés en espagnol
Double beta decay
NEMO-3
SuperNEMO
BiPo
Majorana neutrino
Radiopurity
Origine
Importé de halUnités de recherche