학술논문
Irradiation tests in BR2 of miniature fission chambers in pulse, Campbelling and current mode
Document Type
Conference
Source
2011 2nd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), 2011 2nd International Conference on. :1-8 Jun, 2011
Subject
Language
Abstract
The FNDS system ("Fast Neutron Detection System") for the on-line in-pile detection of the fast neutron flux in the presence of a significant thermal neutron flux and a high gamma dose rate is being developed in the framework of the SCK·CEN-CEA Laboratoire Commun. The system has been patented in 2008. The system consists of a miniature Pu-242 fission chamber as main detector, complemented by a U-235 fission chamber or a rhodium Self-Powered Neutron Detector (SPND) for thermal neutron flux monitoring and a dedicated acquisition system that also takes care of the processing of the signals from both detectors to extract fast neutron flux data. This paper describes a FNDS qualification experiment in the SCK·CEN BR2 reactor, with experimental results on a large set of fission chambers in current and Campbelling mode.