A low-noise ASIC preamplifier for semiconductor detectors has been built and characterized, which is able to provide a linear spectroscopic measurement of the detector charge signals even when its output voltage is saturated. The preamplifier works in a conventional mode, i.e. as an active current integrator, when the output signal is below a preset threshold. If the signal is larger the preamplifier operates in a non-standard controlled fast-reset mode, which is effective in providing a linear measurement of the detector signal charge even when the preamplifier works close to or in saturation. The experimental relation between the measurement and the input charge keeps perfectly linear irrespective of the non-linearity of the preamplifier working regime, which yields a dynamic-range boost of more than one order of magnitude.
An integrated low-noise charge-sensitive preamplifier with virtually unlimited spectroscopic dynamic range / A. Pullia, F. Zocca, S. Capra (IEEE CONFERENCE RECORD - NUCLEAR SCIENCE SYMPOSIUM & MEDICAL IMAGING CONFERENCE). - In: 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC) / [a cura di] B. Yu. - Piscataway (New Jersey) : IEEE, 2012. - ISBN 9781467320306. - pp. 693-696 (( convegno Nuclear science symposium and medical imaging conference tenutosi a Anaheim nel 2012 [10.1109/NSSMIC.2012.6551194].
An integrated low-noise charge-sensitive preamplifier with virtually unlimited spectroscopic dynamic range
A. PulliaPrimo
;F. ZoccaSecondo
;S. CapraUltimo
2012
Abstract
A low-noise ASIC preamplifier for semiconductor detectors has been built and characterized, which is able to provide a linear spectroscopic measurement of the detector charge signals even when its output voltage is saturated. The preamplifier works in a conventional mode, i.e. as an active current integrator, when the output signal is below a preset threshold. If the signal is larger the preamplifier operates in a non-standard controlled fast-reset mode, which is effective in providing a linear measurement of the detector signal charge even when the preamplifier works close to or in saturation. The experimental relation between the measurement and the input charge keeps perfectly linear irrespective of the non-linearity of the preamplifier working regime, which yields a dynamic-range boost of more than one order of magnitude.File | Dimensione | Formato | |
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