Design, construction and characterization of a new neutron beam for neutron radiography at the Tehran Research Reactor

被引：22

作者：

Dastjerdi, M. H. Choopan ^{[1
,2
]}

Khalafi, H. ^{[1
]}

Kasesaz, Y. ^{[1
]}

Mirvakili, S. M. ^{[1
]}

Emami, J. ^{[1
]}

Ghods, H. ^{[1
]}

Ezzati, A. ^{[1
]}

机构：

[1] Atom Energy Org Iran, Nucl Sci & Technol Res Inst, Reactor Res Sch, Tehran, Iran

[2] Amirkabir Univ Technol, Dept Energy Engn & Phys, Tehran, Iran

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 818卷

关键词：

Neutron radiography; Collimator; MCNP; Tehran Research Reactor; ASTM standard; TOMOGRAPHY; COLLIMATOR; FACILITY; FUEL;

D O I：

10.1016/j.nima.2016.02.040

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

To obtain a thermal neutron beam for neutron radiography applications, a neutron collimator has been designed and implemented at the Tehran Research Reactor (TRR). TRR is a 5 MW open pool light water moderated reactor with seven beam tubes. The neutron collimator is implemented in the E beam tube of the TRR. The design of the neutron collimator was performed using MCNPX Monte Carlo code. In this work, polycrystalline bismuth and graphite have been used as a gamma filter and an illuminator, respectively. The L/D parameter of the facility was chosen in the range of 150-250. The thermal neutron flux at the image plane can be varied from 2.26 x 10(6) to 6.5 x 10(6) n cm(-2) s(-1). Characterization of the beam was performed by ASTM standard IQI and foil activation technique to determine the quality of neutron beam. The results show that the obtained neutron beam has a good quality for neutron radiography applications. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1 / 8

页数：8

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