Study on the response of IFMIF fission chambers to mixed neutron-gamma fields: PH-2 experimental tests

Rapisarda, D. and Vermeeren, L. and Garcia, A. and Cabellos de Francisco, Oscar Luis and Garcia, J.M. and Ibarra, A. and Gómez Ros, J.M. and Mota, F. and Casal, N. and Queral, V. (2011). Study on the response of IFMIF fission chambers to mixed neutron-gamma fields: PH-2 experimental tests. "Fusion Engineering and Design", v. 86 (n. 6-8); pp. 1232-1235. ISSN 0920-3796. https://doi.org/10.1016/j.fusengdes.2011.03.079.

Description

Title: Study on the response of IFMIF fission chambers to mixed neutron-gamma fields: PH-2 experimental tests
Author/s:
  • Rapisarda, D.
  • Vermeeren, L.
  • Garcia, A.
  • Cabellos de Francisco, Oscar Luis
  • Garcia, J.M.
  • Ibarra, A.
  • Gómez Ros, J.M.
  • Mota, F.
  • Casal, N.
  • Queral, V.
Item Type: Article
Título de Revista/Publicación: Fusion Engineering and Design
Date: October 2011
ISSN: 0920-3796
Volume: 86
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Nuclear [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The engineering design of fissionchambers as on-line radiation detectors for IFMIF is being performed in the framework of the IFMIF-EVEDA works. In this paper the results of the experiments performed in the BR2 reactor during the phase-2 of the foreseen validation activities are addressed. Two detectors have been tested in a mixedneutron-gamma field with high neutron fluence and gamma absorbed dose rates, comparable with the expected values in the HFTM in IFMIF. Since the neutron spectra in all BR2 channels are dominated by the thermal neutron component, the detectors have been surrounded by a cylindrical gadolinium screen to cut the thermal neutron component, in order to get a more representative test for IFMIF conditions. The integrated gamma absorbed dose was about 4 × 1010 Gy and the fast neutron fluence (E > 0.1 MeV) 4 × 1020 n/cm2. The fissionchambers were calibrated in three BR2 channels with different neutron-to-gamma ratio, and the long-term evolution of the signals was studied and compared with theoretical calculations

More information

Item ID: 11166
DC Identifier: http://oa.upm.es/11166/
OAI Identifier: oai:oa.upm.es:11166
DOI: 10.1016/j.fusengdes.2011.03.079
Deposited by: Memoria Investigacion
Deposited on: 26 Jun 2012 08:48
Last Modified: 20 Apr 2016 19:19
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