Pre-amplifier PA311 manufactured by NUCLEONIX essentially has a standard 14 contact socket, 10-stage voltage divider, pre-amplifier electronics. The Preamplifier is designed to suit a wide range of Standard detectors (Scintillation), integral assemblies. NUCLEONIX offers integral assemblies with the above Preamplifier. This Preamplifier is directly compatible with all 2, 3 and 5 inch diameter PM tubes used in standard detectors.
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Features
- Compact Solid state circuit design
- Suitable for wide range of NaI integral assemblies
- Choice of both focus and gain adjustments by presets
- Rise time 100 nano sec.
- Pre-amplifier with vertical housing for integral assembly
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| Specifications |
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Socket |
Standard 14 contact pin |
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Voltage Divider |
10 stage, directly compatible with all 2, 3 and 5 inch diameter PM tubes used in standard Bicron detectors. |
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Connectors |
(a) Signal Output : Positive polarity, BNC receptacle, mates with BNC plug or equivalent.
(b) EHT Connector : Standard MHV/UHF socket, which can mate with a MHV/UHF plug.
(c) DC Pre-amp Power : 5 pin minihex / circular I/O connector (socket). |
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Noise |
Less than 50 micro volts rms refer to input. |
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Input |
Direct connection from photmultiplier tube anode to charge integrating pre-amplifier input circuit, negative charge. |
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Conversion Gain |
5x10-11 Coulombs per volt with NaI (Tl) or faster scintillators. |
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Rise Time |
100 Nano Seconds |
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Decay Time |
4 micro seconds (internally adjustable) |
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Output impedance |
90 ohms (approx) |
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Gain stability |
0.25% C from 0o to 50o centigrade |
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Linearity |
0.25% |
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Power requirement |
a. Pre-amp –24V at 10mA
b. PM Tube voltage Divider Bias : Typically +600V to +850V (positive only) at 150 microamps. |
