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New perspectives for undoped CaF2 scintillator as a threshold activation neutron detector
- Source :
- EPJ Web of Conferences, EPJ Web of Conferences, 2018, 170, pp.07012. ⟨10.1051/epjconf/201817007012⟩, EPJ Web of Conferences, Vol 170, p 07012 (2018), ANIMMA 2017 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications, ANIMMA 2017 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications, Jun 2017, Liège, Belgium. pp.07012, ⟨10.1051/epjconf/201817007012⟩
- Publication Year :
- 2018
- Publisher :
- EDP Sciences, 2018.
-
Abstract
- In this paper we present the prompt photofission neutron detection performance of undoped CaF2 scintillator using Threshold Activation Detection (TAD). The study is carried out in the frame of C-BORD Horizon 2020 project, during which an efficient toolbox for high volume freight non-intrusive inspection (NII) is under development. Technologies for radiation monitoring are the part of the project. Particularly, detection of various radiological threats on country borders plays an important significant role in Homeland Security applications. Detection of illegal transfer of Special Nuclear Material (SNM) - 235U, 233U and 239Pu - is particular due to the potential use for production of nuclear weapon as well as radiological dispersal device (RDD) V known also as a “dirty bomb”. This technique relies on activation of 19F nuclei in the scintillator medium by fast neutrons and registration of high-energy β particles and γ-rays from the decay of reaction products. The radiation from SNM is detected after irradiation in order to avoid detector blinding. Despite the low 19F(n,α)16N or 19F(n,p)19O reaction cross-section, the method could be a good solution for detection of shielded nuclear material. Results obtained with the CaF2 detector were compared with the previous study done for BaF2 and 3He detector. These experimental results were obtained using 252Cf source and 9 MeV Varian Linatron M9 linear accelerator (LINAC). Finally, performance of the prompt neutron detection system based on CaF2 will be validated at Rotterdam Seaport during field trails in 2018.
- Subjects :
- CaF2
QC1-999
Nuclear material
Scintillator
Radiation
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
01 natural sciences
plastic scintillator
SNM
Nuclear physics
Physics and Astronomy (all)
Photofission
Prompt neutron
0103 physical sciences
non-intrusive inspection
MCNP
Neutron detection
beta-rays
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
010306 general physics
nuclear instrumentation
Physics
instrumentation
Neutron-gamma discrimination
detector
010308 nuclear & particles physics
Special nuclear material
BaF2
Detector
neutrons
linear accelerator (LINAC)
Border monitoring
Fluorine
Scintillators
TAD
Threshold activation detection
Uranium
gamma-rays
Neutron temperature
radioactivity
ionizing radiation
Subjects
Details
- Language :
- English
- ISSN :
- 2100014X
- Database :
- OpenAIRE
- Journal :
- EPJ Web of Conferences, EPJ Web of Conferences, 2018, 170, pp.07012. ⟨10.1051/epjconf/201817007012⟩, EPJ Web of Conferences, Vol 170, p 07012 (2018), ANIMMA 2017 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications, ANIMMA 2017 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications, Jun 2017, Liège, Belgium. pp.07012, ⟨10.1051/epjconf/201817007012⟩
- Accession number :
- edsair.doi.dedup.....ce8789399fb45cae38b785b6873edb51