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15th Solid State Dosimetry (SSD15), Delft : Pays-Bas (2008)
Measurement of $^{222}$Rn at the Bq $m^{-3}$ level with the AlphaRad chip
S. Higueret1, D. Husson1, M. Trocmé1, A. Nourreddine1, T.D. Lê1, N. Michielsen2

We describe a fully standalone compact electronic monitor for atmospheric $^{222}$Rn, based on a new CMOS system-on-chip. The electronic board consists of three AlphaRad CMOS chips running in parallel, and it includes a numeric block for data treatment based on a Xilinx programmable gate array. In addition to classical tests (passive detection in a calibrated radon chamber), we present the first results with active collection of radon progeny present as aerosols.
1 :  DRS-IPHC - Département Recherches Subatomiques
2 :  DSU/SERAC/LPMA - Laboratoire de Physique et de Métrologie des Aérosols
Physique/Physique/Instrumentations et Détecteurs
CMOS – Solid state detectors – 222Rn – Radon monitoring – AlphaRad – Dosimetry – System-on-chip