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BiPo prototype measurements for SuperNEMO

Abstract : The BiPo pro ject is dedicated to the measurement of extremely low radioactive contaminations of SuperNEMO ββ source foils ( 208 Tl < 2 µBq/kg and 214 Bi < 10 µBq/kg). A modular BiPo1 prototype with its 20 modules and its shielding test facility is running in the Modane Underground Laboratory since February, 2008. The goal of this prototype is to study the back-grounds and particularly the surface contamination of plastic scintillators. After 2 months, a preliminary upper limit on the sensitivity of a 10 m 2 BiPo detector in 208 Tl contamination of selenium source foils can be extrapolated to: A( 208 Tl) < 7.5 µBq/kg (90 % C.L.).
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http://hal.in2p3.fr/in2p3-00287589
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Submitted on : Thursday, June 12, 2008 - 11:33:19 AM
Last modification on : Wednesday, September 16, 2020 - 4:21:50 PM
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M. Bongrand. BiPo prototype measurements for SuperNEMO. 43e Rencontres de Moriond Electroweak interactions and Unified theories, Mar 2008, La Thuile, Italy. pp.519-522. ⟨in2p3-00287589⟩

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