BiPo PROTOTYPE FOR SuperNEMO RADIOPURITY MEASUREMENTS
نویسنده
چکیده
The BiPo project is dedicated to the measurement of extremely low radioactive contaminations of SuperNEMO ββ source foils (Tl < 2 μBq/kg and 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 backgrounds and particularly the surface contamination of plastic scintillators. After 2 months, a preliminary upper limit on the sensitivity of a 10 m BiPo detector in Tl contamination of selenium source foils can be extrapolated to: A(Tl) < 7.5 μBq/kg (90 % C.L.).
منابع مشابه
M ay 2 01 0 Results of the BiPo - 1 prototype for radiopurity measurements for the SuperNEMO double beta decay source foils
The development of BiPo detectors is dedicated to the measurement of extremely high radiopurity in Tl and Bi for the SuperNEMO double beta decay source foils. A modular prototype, called BiPo-1, with 0.8 m 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 parti...
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