Characterization of an 241AmBe neutron irradiation facility by different spectrometric techniques

Gallego Díaz, Eduardo F. and Amgarou, Khalil and Bedogni, Roberto and Domingo, Carles and Esposito, A. and Lorente Fillol, Alfredo and Méndez Villafañe, Roberto and Vega-Carrillo, Héctor René (2012). Characterization of an 241AmBe neutron irradiation facility by different spectrometric techniques. In: "13th International Congress of the International Radiation Protection Association (IRPA 13)", 13/05/2012 - 18/05/2012, Glasgow, Scotland. p. 146.

Description

Title: Characterization of an 241AmBe neutron irradiation facility by different spectrometric techniques
Author/s:
  • Gallego Díaz, Eduardo F.
  • Amgarou, Khalil
  • Bedogni, Roberto
  • Domingo, Carles
  • Esposito, A.
  • Lorente Fillol, Alfredo
  • Méndez Villafañe, Roberto
  • Vega-Carrillo, Héctor René
Item Type: Presentation at Congress or Conference (Article)
Event Title: 13th International Congress of the International Radiation Protection Association (IRPA 13)
Event Dates: 13/05/2012 - 18/05/2012
Event Location: Glasgow, Scotland
Title of Book: 13th International Congress of the International Radiation Protection Association (IRPA 13)
Date: 2012
Subjects:
Freetext Keywords: Neutron spectrometry; neutron dosimetry
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Nuclear [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (582kB) | Preview

Abstract

An automated panoramic irradiator with a 3 Ci 241Am-Be neutron source is installed in a bunker-type large room at the Universidad Politécnica de Madrid (UPM). It was recently modified and a neutron spectrometry campaign was organized to characterize the neutron fields in different measurement points along the irradiation bench. Four research groups working with different Bonner Sphere Spectrometers (BSS) and using different spectral unfolding codes took part to this exercise. INFN-LNF used a BSS formed by 9 spheres plus bare detector, with cylindrical, almost point like, 6LiI(Eu) scintillator (4 mm x 4 mm, from Ludlum); UAZ-UPM employed a similar system but with only 6 spheres plus bare detector; UAB worked with a 3He filled proportional counter at 8kPa filling pressure, cylindrical 9 mm x 10 mm (05NH1 from Eurisys) with 11 spheres configuration; and CIEMAT used 12 spheres with an spherical 3He SP9 counter (Centronic Ltd., UK) with very high sensitivity due to the large diameter (3.2 cm) and the filling pressure of the order of 228 kPa. Each group applied a different spectral unfolding method: INFN and UAB worked with FRUIT ver. 3.0 with their own response matrixes; UAZ-UPM used the BUNKIUT unfolding code with the response matrix UTA4 and CIEMAT employed the GRAVEL-MAXED-IQU package with their own response matrix. The paper shows the main results obtained in terms of neutron spectra at fixed distances from the source as well as total neutron fluence rate and ambient dose equivalent rate H*(10) determined from the spectra. The latter are compared with the readings of a common active survey-meter (LB 6411). The small differences in the results of the various groups are discussed.

More information

Item ID: 19584
DC Identifier: http://oa.upm.es/19584/
OAI Identifier: oai:oa.upm.es:19584
Official URL: http://www.irpa13glasgow.com/
Deposited by: Memoria Investigacion
Deposited on: 26 Jan 2014 08:37
Last Modified: 21 Apr 2016 20:21
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM