Irradiation tests of ITER candidate Hall sensors using two types of neutron spectra

0355682 - ÚFP 2011 RIV US eng J - Journal Article
Ďuran, Ivan - Bolshakova, I. - Viererbl, L. - Sentkerestiová, J. - Holyaka, R. - Lahodová, Z. - Bém, Pavel
Irradiation tests of ITER candidate Hall sensors using two types of neutron spectra.
Review of Scientific Instruments. Roč. 81, č. 10 (2010), 10E122-10E122. ISSN 0034-6748. E-ISSN 1089-7623.
[Topical Conference on High-Temperature Plasma Diagnostics/18th./. Wildwood, 16.05.2010-20.05.2010]
R&D Projects: GA ČR GD202/08/H057; GA MPO 2A-1TP1/101
Institutional research plan: CEZ:AV0Z20430508; CEZ:AV0Z10480505
Keywords : Galvanomagnetic Sensor * Fusion Reactor * Magnetic Diagnostics * Radiation
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.598, year: 2010

We report on irradiation tests of InSb based Hall sensors at two irradiation facilities with two distinct types of neutron spectra. One was a fission reactor neutron spectrum with a significant presence of thermal neutrons, while another one was purely fast neutron field. Total neutron fluence of the order of 1016 cm−2 was accumulated in both cases, leading to significant drop of Hall sensor sensitivity in case of fission reactor spectrum, while stable performance was observed at purely fast neutron spectrum. This finding suggests that performance of this particular type of Hall sensors is governed dominantly by transmutation. Additionally, it further stresses the need to test ITER candidate Hall sensors under neutron flux with ITER relevant spectrum.
Permanent Link: http://hdl.handle.net/11104/0194395