Design and Development of a Charge-Sensitive Preamplifier for Nuclear Pulse Processing
Journal Title: International Journal of Scientific Research and Management - Year 2013, Vol 1, Issue 6
Abstract
Authors attempt to describe a Charge - Sensitive P reamplifier for fast Pulse Processing. The charge sensitive preamplifier uses a capacitor in place of the feedback resistor. The input capacitance of this circuit is C in = AC f , where A is the open - loop gain of the op - amp. If the op - amp gain is high enough that C i << C in , the external capacitance can be neglected. The charge Q is stored onto the feedback capacitor C f , producing an output pulse of height V= - Q/C f independent of the detector and stray capacitances. Since there is a high voltage on the detector electrode, the amplifier input is connected to the cathode of the GM detector through a ground full - up Resistor.
Authors and Affiliations
M. Nazrul Islam
Keywords
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