Details

Autor(en) / Beteiligte

• Bongrand, M.

Titel

The BiPo detector for ultralow radioactivity measurements

Ist Teil von

• AIP conference proceedings, 2007, Vol.897 (1)

Ort / Verlag

United States

Erscheinungsjahr

2007

Beschreibungen/Notizen

• The BiPo project is dedicated to the measurement of extremely low radioactivity contamination of SuperNEMO source foils (208Tl < 2 {mu}Bq/kg and 214Bi < 10 {mu}Bq/kg). The R and D phase is started : a modular BiPo prototype with its shielding test facility is under construction. The goal of this prototype is to study the background and particularly the surface contamination of scintillators. The first capsule has been installed in the Canfranc Underground Laboratory in October, 17th and is now taking data. After 10.7 days of measurements, a preliminary upper limit on the surface radiopurity of the scintillators of A(208Tl) < 60 {mu}Bq/m2 (90% C. L.) has been obtained.