Physics – Instrumentation and Detectors
Scientific paper
2006-08-04
Nucl.Instrum.Meth.A526:493-500,2004
Physics
Instrumentation and Detectors
This is a longer version of a shorter publication, under the title: "Design criteria for electronics for charge division in th
Scientific paper
10.1016/j.nima.2004.02.024
An amplifier has been designed for optimal use of position sensitive thermal neutron detectors using the principle of resistive charge division. The important points in this optimization are: high counting rates and good spatial resolution. This amplifier is built as a hybrid circuit and is now used on several new instruments at the ILL. It consists of a fast low noise current pre-amplifier, a gaussian shaping circuit based on a 4th order active filter and an essentially noiseless baseline reconstruction. In this paper, we present a rather complete theoretical analysis of the problem that lead us to the choices made above, and allows for an optimal adaptation to other situations. An analysis of unwanted, secondary effects is also worked out.
Esch Patrick Van
Gahl Thomas
Guerard Bruno
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