An Innovative Analog Circuit to Retrieve Energy Information From Signals of Deeply Saturated Preamplifiers Connected to Semiconductor Detectors

In nuclear spectroscopy, by definition, a distorted signal from saturated preamplifier cannot contain the correct energy information, being this one directly related to amplitude. work, we propose an innovative technique exploit charge-conservation principle extract high-resolution information deeply charge-sensitive (CSP) connected semiconductor detectors. The previously described “fast-reset” enables reconstruct collecting charge on input node with current generator and performing time-over-threshold (ToT) measurement. However, it requires offline postprocessing of acquired data. proposed circuit, instead, no postprocessing, thanks peculiar time-to-amplitude converter (TAC) that integrates baseline rejection circuit. way, extension spectroscopic range factor 20 or more is possible, generation whose shape optimized for direct acquisition pulse-height analyzer additional filtering.