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Modelling of self-powered detectors for fast neutrons

Raj, Prasoon

Abstract (englisch):
Self-powered detector is a compact and reliable choice for neutron or gamma flux monitoring in fission reactor cores. In this work, experiments and calculations are done to investigate the possibilities of using this principle of measurement for fast neutron field in the test blanket modules of ITER, the fusion reactor under construction in south of France. Constraints on the physical and nuclear properties are identified for an emitter material responsive to fast neutrons. A few materials including beryllium, chromium, vanadium, silver etc. are selected for test, based on these constraints. A test device in flat geometry is constructed in-house and tested with a 14 MeV neutron generator. It has been found in the experiments that the purely neutron-induced effect is low compared to other effects. Other main contributors to the current signal are parasitic reactions due to high energy gamma and neutrons in emitter or other parts of the detector. These effects are studied with computational simulations. A multi-step Monte-Carlo particle transport method is employed to calculate the response of SPND to relevant neutron and/or gamma spe ... mehr

Zugehörige Institution(en) am KIT Institut für Neutronenphysik und Reaktortechnik (INR)
Publikationstyp Vortrag
Jahr 2016
Sprache Englisch
Identifikator KITopen ID: 1000062765
HGF-Programm 31.03.08; LK 01
Erschienen in Workshop on Innovative Sensors and Detection Devices, Strasbourg, F, October 30, 2016
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