A1424
Scintillation Preamplifier
Features
- Fast, low noise inverting preamplifier specifically designed for Scintillation Detectors
- Variable sensitivity from 0.8 to 10 mV/pC
- Fast output for timing measurements
- Test input for calibration
Overview
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).
The A1424 can be powered using the following devices:
Technical Specifications
- Packaging
Shielded Box
Dimensions: 55 mm x 25 mm x 95 mm
Weight: 260 g (with Power Supply cable)
- No. of Channels
1
- INPUT SENSITIVITIES
0.8, 0.9, 1.1, 1.3, 1.5, 1.7, 2.5, 3, 5, 10 mV/pC selectable via Rotary Switch
- RISE TIME
ENERGY Out < 60 ns
FAST Out < 2.3 ns
- FALL TIME
ENERGY Out < 60 ns
FAST Out < 2.3 ns
- Integral Nonlinearity
Energy Out: < ± 0.02%
- Temperature Coefficient
±0.01% /C°
- NOISE (Energy Out)
Max. sensitivity (10 mV/pC) < 3.2 fC
Min. sensitivity (0.8 mV/pC) < 8.5 fC
- Counting Rate
Gain shift < 0.15% on 130 mV pulses on
IN input (sensitivity: 3 mV/pC), adding on
TEST input 60 mV @40 kHz random pulses
- INPUT (Detector IN)
Accepts positive and negative input charge pulses from Scintillation detectors. Maximum Input Voltage: ±4 V, input impedance: 50 Ω, LEMO-00 connector.
- INPUT (Test)
Positive or negative inputs for the energy calibration via Ctest = 100 pF; LEMO-00 connector.
- OUTPUT (Energy)
± 8V (on 1 kΩ), 50 Ω back termination. The output voltage is proportional to the amount of input charge, LEMO-00 connector
- OUTPUT (Fast)
Reproduces the input signals (gain ~ 1) coming from the detector as fast output for timing measurements. 50 Ω back termination, LEMO-00 connector.
- Power Requirements
15mA @ +12V; 15mA @ -12V
Compare
Compare with Preamplifiers for Scintillation Detectors.
Loading...
Ordering Options
| Code | Description |
|---|---|
| WA1424XAAAAA | A1424 - Scintillation Preamplifier RoHS |