Published 2021 | Version v1
Journal article Metadata-only

Sensitivity Analysis of an Advanced Transmission Measurement Method for Thermal Neutrons Absorbers Detection in Irradiated Beryllium

Creators

  • 1. CEA Cadarache, DES/IRESNE/DER, F-13108 Saint Paul Lez Durance (France)
  • 2. NCBJ 05-400 Otwock-Świerk (Poland)

Description

This paper presents an advanced optimization analysis of the newly developed transmission measurement method conducted in the MARIA MTR reactor for thermal neutrons absorbers estimation in irradiated beryllium elements. Several neutron sources in combination with various thermal neutron detectors are investigated, along with the optimization of the moderating polyethylene layer to improve the signal to background ratio. It was concluded that the use of 239PuBe or 241AmB neutron source with polyethylene of 0.95 g/cm3 density and ∼4.5 cm thickness, as well as either 235U lined fission chamber or BF3 detectors are meeting the requirements for the use in the experiment. Key words: Transmission measurements / Sensitivity analysis / neutron sources / thermal neutron detectors / beryllium

Availability note (English)

Available from https://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_04011.pdf; https://doaj.org/article/554bb882551e41b2a2f533f9212f0282

Additional details

Identifiers

URL
https://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_04011.pdf; https://doaj.org/article/554bb882551e41b2a2f533f9212f0282;
DOI
10.1051/epjconf/202125304011;

Publishing Information

Journal Title
EPJ. Web of Conferences
Journal Volume
253
Journal Page Range
vp.
ISSN
2100-014X

Conference

Title
International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications
Acronym
ANIMMA 2021
Dates
21-25 Jun 2021
Place
Prague (Czech Republic)

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
53090642
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S07: ISOTOPES AND RADIATION SOURCES;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BERYLLIUM; DENSITY; FISSION CHAMBERS; IRRADIATION; LAYERS; MTR REACTOR; NEUTRON ABSORBERS; NEUTRON SOURCES; OPTIMIZATION; POLYETHYLENES; RADIATION DETECTION; SENSITIVITY ANALYSIS; SIGNALS; THERMAL NEUTRONS; URANIUM 235
Descriptors DEC
ACTINIDE NUCLEI; ALKALINE EARTH METALS; ALPHA DECAY RADIOISOTOPES; BARYONS; DETECTION; ELEMENTARY PARTICLES; ELEMENTS; ENRICHED URANIUM REACTORS; EVEN-ODD NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IONIZATION CHAMBERS; IRRADIATION REACTORS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MATERIALS TESTING REACTORS; MEASURING INSTRUMENTS; METALS; MINUTES LIVING RADIOISOTOPES; NEUTRON DETECTORS; NEUTRONS; NUCLEI; NUCLEONS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PARTICLE SOURCES; PHYSICAL PROPERTIES; POLYMERS; POLYOLEFINS; RADIATION DETECTORS; RADIATION SOURCES; RADIOISOTOPES; REACTORS; SPONTANEOUS FISSION RADIOISOTOPES; TANK TYPE REACTORS; THERMAL REACTORS; URANIUM ISOTOPES; WATER COOLED REACTORS; WATER MODERATED REACTORS; YEARS LIVING RADIOISOTOPES