PURPOSE
The item is designed for amplifying and shaping signals from preamplifiers of semiconductor nuclear-radiation detectors.
USES
The amplifier UIS-02 is used as part of spectrometers (SU-04P, SU-04P1) or with other sources of pulsed signals.
FEATURES
- Set of active filters with the constant shaping time from 0.5 to 10 µ s
- Gated base line restorer with manual threshold control and indication
- Piled-up pulse detector
- Bias voltage control
- Pole/zero matching potentiometer
- “ Count” , “ Inhibit” , preamplifier power supply connectors
- Wide gain range, high linearity, low noise
- Standard single-width NIM module 8 Вѕ in. (222.25 mm) high
CHARACTERISTICS
|
Input pulse parameters: |
|
- input pulse polarity |
+/- |
|
- rise time |
No more than 200 ns |
|
- decay time constant |
No less than 50 µ s |
|
Amplifier input resistance |
1 kΩ |
|
Output pulse parameters: |
|
- output pulse polarity |
+ |
|
- maximum amplitude (at RL = 2 kΩ ) |
10 V |
| Quasi-Gauss type shaping (T is the shaping time constant) |
With rise time (1.15 ± 0.15)T; with decay time 3T |
|
Shaping time constants |
0.5; 1; 2; 4; 6; 10 µ s |
|
Output resistance |
50 Ω |
|
Integral nonlinearity |
No more than В± 0.03% |
|
Gain is adjusted by |
|
- “ COARSE” selector switch |
Steps 5; 10; 30;50;100; 300 |
|
- “ CONTINUOUS” knob |
With coefficient - 0.5/+1.5 |
|
Basic gain setting error |
No more than В±10% |
|
Noise level reduced to the input at the shaping time constant 4 µ s and gain over 50 |
No more than 5 µ V |
|
Intensity characteristics at the input intensity 105 s-1 and shaping time constant 2 µ s: |
|
- displacement of the center of gravity of the 60Co peak (at least 90% of the full scale) |
No more than В±0.75% |
|
- peak broadening |
No more than 50% |
|
