Performance of Higher Order Campbell methods, Part I: review and numerical convergence study
Artikel i vetenskaplig tidskrift, 2016

This paper investigates, through numerical simulations, the performance of a signal analysis method by which a high temperature fission chamber can be used over a wide range of count rates. Results reported in a previous paper (Elter et al., 2015 [I]) indicated that the traditional Campbell method and the pulse mode cannot provide a sufficient overlap at medium count rates. Hence the use of the so-called Higher Order Campbell (HOC) methods is proposed and their performance is investigated. It is shown that the HOC methods can guarantee the linearity (i.e. correctness) of the neutron flux estimation over a wide count rate, even during transient conditions. The capabilities of these methods for suppressing parasitic noise (originating from various sources) are verified.

Filtered Poisson process


Neutron flux monitoring

Fission chamber

High order

Campbelling mode


Zsolt Elter

Chalmers, Fysik, Subatomär fysik och plasmafysik

M. Bakkali

Commissariat a L'Energie Atomique CEA

C. Jammes

Commissariat a L'Energie Atomique CEA

Imre Pazsit

Chalmers, Fysik, Subatomär fysik och plasmafysik

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

0168-9002 (ISSN)

Vol. 821 66-72