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PRE-AMPLIFIER - [ Type : PA 311 ]  
Technical Data

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.

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
Pre-amplifier
Specifications
Socket
Standard 14 contact pin
Voltage Divider
10 stage, directly compatible with all 2, 3 and 5 inch diameter PM tubes used in standard Bicron detectors.
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).
Noise
Less than 50 micro volts rms refer to input.
Input
Direct connection from photmultiplier tube anode to charge integrating pre-amplifier input circuit, negative charge.
Conversion Gain
5x10-11 Coulombs per volt with NaI (Tl) or faster scintillators.
Rise Time
100 Nano Seconds
Decay Time
4 micro seconds (internally adjustable)
Output impedance
90 ohms (approx)
Gain stability
0.25% C from 0o to 50o centigrade
Linearity
0.25%
Power requirement
a. Pre-amp –24V at 10mA
b. PM Tube voltage Divider Bias : Typically +600V to +850V (positive only) at 150 microamps.
Plot No.162 A & B, Phase-II, IDA, Cherlapally, Hyderabad-500051 India Phone: +91-7207034546, +91-7331104481, 7331104482, Fax : 040 - 29706486.
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