A1424

The CAEN Mod.A1424 is a preamplifier specifically designed for Scintillation Detectors widely used in Nuclear and High Energy Physics where low noise, fast response and high counting rates are required.
The A1424 relies on an inverting Charge Sensitive Preamplifier which integrates both positive and negative input charge pulses coming from the Photodetector (e.g. PMT) coupled to the Scintillator.
It provides a voltage signal in the ±4 V range on 50 Ω termination (±8 V on 1 kΩ) with exponential decay (t= 50 µs) as Energy output (ENERGY). The height of the resulting pulse is proportional to the integrated charge. The sensitivity of the Charge Sensitive Preamplifier can be set via a 10 position rotary switch ranging from 0.8 to 10 mV/pC.
The A1424 is provided with a non-inverting buffer (gain ~ 1) which reproduces the input signals coming from the detector as fast output being useful for timing measurements (FAST). Moreover, a test input accepts positive and negative signals for calibration purposes (TEST).