Title of article :
Development of self-powered neutron detectors for neutron flux monitoring in HCLL and HCPB ITER-TBM
Author/Authors :
Angelone، نويسنده , , M. and Klix، نويسنده , , A. and Pillon، نويسنده , , M. and Batistoni، نويسنده , , P. and Fischer، نويسنده , , U. and Santagata، نويسنده , , A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
5
From page :
2194
To page :
2198
Abstract :
Self powered neutron detectors (SPND) have a number of interesting properties (e.g. small dimensions, capability to operate in harsh environments, absence of external bias), so they are attractive neutron monitors for TBM in ITER. However, commercially available SPNDs are optimized for operation in a thermal nuclear reactor where the neutron spectrum is much softer than that expected in a TBM. This fact can limit the use of SPND in a TBM since the effective cross sections for the production of beta emitters are much lower in a fast neutron spectrum. ork represents the first attempt to study SPNDs as neutron flux monitors for TBM. Three state-of-the-art SPND available on the market were bought and tested using fast neutrons at TAPIRO fast neutron source of ENEA Casaccia and with 14 MeV neutrons at the Frascati neutron generator (FNG). sults clearly indicate that in fast neutron spectra, the response of SPNDs is much lower than in thermal neutron flux. Activation calculations were performed using the FISPACT code to find out possible material candidates for SPND suitable for operation in TBM neutron spectra.
Keywords :
Neutron activation , Thermal neutron spectrum , Fast neutron spectrum , beta decay , FISPACT code , Emitter
Journal title :
Fusion Engineering and Design
Serial Year :
2014
Journal title :
Fusion Engineering and Design
Record number :
2362933
Link To Document :
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