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SPECTROSCOPY AMPLIFIER
(A 225)
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A225 Spectroscopy Amplifier is a high performance pulse shaping amplifier, ideally suited for use with nuclear radiation detectors such as HPGe, silicon surface barrier and Si (Li) detectors. This is a single width NIM module with differential input and unipolar and bipolar outputs. The unipolar output is stabilised with a gated baseline restorer. A pile-up reject (PUR) output is provided to facilitate experiments at high count rate.
Salient Features
| Input | Option for diffential or single ended input |
| Pulse shaping | 7-pole quasi-gaussian and quasi- triangular |
| Gated baseline restorer | Stabilises unipolar output baseline |
| Pile-up rejection | Provides PUR signal for ADC |
Performance Specifications
| Gain Range | Continuously variable from x4 to x1500. |
| Shaping time | 0.5, 1, 2, 3, 6 and 10 micro sec. |
| Input Noise | 5 microvolt r.m.s. with 3 micro sec. shaping time. |
| Overload | Recovers to within 2 % of baseline in 15x shaping time from x200 overload. |
| Integral nonlinearity | < 0.05% from 0 to 10V. |
| Crossover Walk | Bipolar zero cross over walk is < ± 3nsec. in 50:1 dynamic range . |
Applications
In nuclear pulse height spectroscopy
In nuclear timing spectroscopy
Counting Systems
For
details contact :
Head, Technology Transfer & Collaboration Division,
BHABHA ATOMIC RESEARCH CENTRE,
TROMBAY, MUMBAI - 400 085
Tel : 091-022-5505337/5593897
Fax : 091-022-5505151
Email : headttcd@barc.gov.in
