Physics – Instrumentation and Detectors
Scientific paper
2008-05-15
JINST3:P06006,2008
Physics
Instrumentation and Detectors
4 pages, 10 figures, Moriond EW 2008 proceeding
Scientific paper
10.1088/1748-0221/3/06/P06006
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.).
Bongrand M.
for the SuperNEMO Collaboration
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