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BiPo prototype for SuperNEMO radiopurity measurements

Abstract : The BiPo project is dedicated to the measurement of extremely low radioactive contaminations of SuperNEMO beta-beta source foils (208Tl < 2 microBq/kg and 214Bi < 10 microBq/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 backgrounds and particularly the surface contamination of plastic scintillators. After 2 months, a preliminary upper limit on the sensitivity of a 10 m2 BiPo detector in 208Tl contamination of selenium source foils can be extrapolated to: A(208Tl) < 7.5 microBq/kg (90 % C.L.).
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Submitted on : Thursday, April 1, 2010 - 5:14:51 PM
Last modification on : Wednesday, September 16, 2020 - 4:23:19 PM

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M. Bongrand. BiPo prototype for SuperNEMO radiopurity measurements. 43rd Rencontres de Moriond on Electroweak Interactions and Unified Theories, Mar 2008, La Thuile, Italy. P06006 (6p.), ⟨10.1088/1748-0221/3/06/P06006⟩. ⟨in2p3-00469568⟩



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