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Large area thin film semiconductor detectors using multichannel counting Castor readout chip

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7 Author(s)
Hordequin, C. ; CEA, Centre d''Etudes Nucleaires de Saclay, Gif-sur-Yvette, France ; Foulon, F. ; Dulinski, W. ; Turchetta, R.
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The performance of charged particle counters associating thin diamond or amorphous silicon (a-Si) detectors to Castor VLSI analog-digital circuits for the fabrication of large area detectors an reported. The 20 μm thick semiconductor detectors were synthesised using chemical vapour deposition (CVD) technique. Detectors of 2.5×2.5 cm2 area were segmented in 32 sub-areas of 13 mm2 in order to limit the electronic noise per reading channel. The 32 channel circuit was used to record the counting rate and the total number of counts on each segment. Such detection systems were tested under alpha particles (241Am) as well as under low energy beta particles (14C). The results show that large area detection systems can readily be fabricated at low cost by the association of an application specific readout chip (ASIC) with chemically vapour deposited semiconductor detectors

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Nuclear Science, IEEE Transactions on  (Volume:47 ,  Issue: 6 )