PMID- 34058521
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20210609
LR  - 20210609
IS  - 1872-9800 (Electronic)
IS  - 0969-8043 (Linking)
VI  - 174
DP  - 2021 Aug
TI  - Neutron guide optimization for the Moroccan PGAA system.
PG  - 109783
LID - S0969-8043(21)00188-3 [pii]
LID - 10.1016/j.apradiso.2021.109783 [doi]
AB  - The Moroccan TRIGA Mark II research reactor is to be equipped with a PGAA (Prompt 
      Gamma Activation Analysis) facility to assist the country's progression in 
      socioeconomic areas such as the environment and geochemistry, agriculture, 
      health, industry, cultural heritage, and human sciences. The requirements of the 
      PGAA facility include a very high thermal to fast neutron flux ratio and a 
      focused, thin beam. Supermirror neutron guides are generally used to meet such 
      requirements due to their ability to reflect neutrons with a specific energy and 
      scattering angle. This study was undertaken to determine a suitable neutron guide 
      for achieving optimal performance for the PGAA facility, where such a 
      determination needs to be made according to both the available space and the 
      minimum performance needed for PGAA analysis. To better parameterize the neutron 
      guide, a set of simulations were performed with the aim of establishing the best 
      guide specifications. Three types of neutron guides were studied, namely 
      straight, curved, and bender. McStas code was used in this study, and the 
      simulations showed that the guides must be 6 m long and that the coating value m 
      must be equal to 5 for the bender and straight guides and 6 for the curved guide. 
      Among the three guide types, the thermal/epithermal (capital EF, Cyrillic(th)/capital EF, Cyrillic(ep)) and 
      thermal/fast (capital EF, Cyrillic(th)/capital EF, Cyrillic(fast)) ratios were found to be much better when using the 
      curved guide.
CI  - Copyright (c) 2021 Elsevier Ltd. All rights reserved.
FAU - El Amri, L
AU  - El Amri L
AD  - Nuclear Reactor Energy and Physics, Nuclear Security and Environment Team 
      (PRESN), Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta, B.P. 
      1014, Rabat, Morocco. Electronic address: lahssenelamri@gmail.com.
FAU - Chetaine, A
AU  - Chetaine A
AD  - Nuclear Reactor Energy and Physics, Nuclear Security and Environment Team 
      (PRESN), Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta, B.P. 
      1014, Rabat, Morocco.
FAU - Amsil, H
AU  - Amsil H
AD  - National Centre for Nuclear Energy, Science and Technology (CNESTEN), B.P. 1382, 
      R.P. 10001, Rabat, Morocco.
FAU - Jalil, A
AU  - Jalil A
AD  - Nuclear Reactor Energy and Physics, Nuclear Security and Environment Team 
      (PRESN), Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta, B.P. 
      1014, Rabat, Morocco.
FAU - El Mokhtari, B
AU  - El Mokhtari B
AD  - Nuclear Reactor Energy and Physics, Nuclear Security and Environment Team 
      (PRESN), Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta, B.P. 
      1014, Rabat, Morocco.
FAU - Embarch, K
AU  - Embarch K
AD  - National Centre for Nuclear Energy, Science and Technology (CNESTEN), B.P. 1382, 
      R.P. 10001, Rabat, Morocco.
FAU - Benchrif, A
AU  - Benchrif A
AD  - National Centre for Nuclear Energy, Science and Technology (CNESTEN), B.P. 1382, 
      R.P. 10001, Rabat, Morocco.
FAU - Laraki, K
AU  - Laraki K
AD  - National Centre for Nuclear Energy, Science and Technology (CNESTEN), B.P. 1382, 
      R.P. 10001, Rabat, Morocco.
FAU - Marah, H
AU  - Marah H
AD  - National Centre for Nuclear Energy, Science and Technology (CNESTEN), B.P. 1382, 
      R.P. 10001, Rabat, Morocco.
LA  - eng
PT  - Journal Article
DEP - 20210525
PL  - England
TA  - Appl Radiat Isot
JT  - Applied radiation and isotopes : including data, instrumentation and methods for 
      use in agriculture, industry and medicine
JID - 9306253
SB  - IM
OTO - NOTNLM
OT  - Bender
OT  - Guide
OT  - Neutron
OT  - PGAA
OT  - Reflection
OT  - Simulation
OT  - Supermirror
EDAT- 2021/06/01 06:00
MHDA- 2021/06/01 06:01
CRDT- 2021/05/31 20:18
PHST- 2020/12/19 00:00 [received]
PHST- 2021/04/14 00:00 [revised]
PHST- 2021/05/14 00:00 [accepted]
PHST- 2021/06/01 06:00 [pubmed]
PHST- 2021/06/01 06:01 [medline]
PHST- 2021/05/31 20:18 [entrez]
AID - S0969-8043(21)00188-3 [pii]
AID - 10.1016/j.apradiso.2021.109783 [doi]
PST - ppublish
SO  - Appl Radiat Isot. 2021 Aug;174:109783. doi: 10.1016/j.apradiso.2021.109783. Epub 
      2021 May 25.