scholarly journals Development of a Neutron Energy-Biased in-Air Figure-of-Merit for Predicting in-Phantom BNCT Neutron Beam Characteristics

2001 ◽  
pp. 671-679 ◽  
Author(s):  
D. L. Bleuel ◽  
R. J. Donahue ◽  
B. A. Ludewigt ◽  
J. Vujic
Keyword(s):  
Neutron Beam ◽  
Neutron Energy ◽  
Figure Of Merit ◽  
Beam Characteristics

Neutron beam characteristics from 50 MeV protons on beryllium using a continuously variable multi-leaf collimator

1983 ◽  
Vol 1 (1) ◽  
pp. 65-76 ◽  
Author(s):  
A. Brahme ◽  
J. Eenmaa ◽  
S. Lindbäck ◽  
A. Montelius ◽  
P. Wootton
Keyword(s):  
Neutron Beam ◽  
Multi Leaf Collimator ◽  
Beam Characteristics ◽  
Mev Protons

Evaluation of the Neutron Beam Characteristics for the Vertical-type Neutron Reflectometer at HANARO

2012 ◽  
Vol 62 (10) ◽  
pp. 1112-1123
Author(s):  
Jeong Soo LEE* ◽  
Ki Yeon KIM ◽  
Jaseung KOO
Keyword(s):  
Neutron Beam ◽  
Neutron Reflectometer ◽  
Beam Characteristics

Geant4 simulation of the n_TOF-EAR2 neutron beam: Characteristics and prospects

2016 ◽  
Vol 52 (4) ◽  
Author(s):  
J. Lerendegui-Marco ◽  
◽  
S. Lo Meo ◽  
C. Guerrero ◽  
M. A. Cortés-Giraldo ◽  
...  
Keyword(s):  
Neutron Beam ◽  
Geant4 Simulation ◽  
Beam Characteristics

scholarly journals SIMULATION OF NEUTRON ENERGY SPECTRA OF FILTERED THERMAL NEUTRON BEAM

2020 ◽  
Vol 10 (3) ◽  
pp. 90
Author(s):  
Phù Chí Hòa ◽  
Phạm Ngọc Sơn ◽  
Huỳnh Thanh Sơn
Keyword(s):  
Ion Transport ◽  
Thermal Neutron ◽  
Neutron Beam ◽  
Transport System ◽  
Neutron Energy ◽  
Heavy Ion ◽  
Energy Spectra ◽  
Thermal Neutron Beam

Trong bài báo, các tính toán mô phỏng về phân bố phổ năng lượng của các neutron nhiệt truyền qua phin lọc của tinh thể sapphire và bistmut đã được thực hiện. Kỹ thuật nơtron phin lọc sử dụng bismuth, sapphire đã được áp dụng. Mô phỏng PHITS (Particle and Heavy Ion Transport System) đã được áp dụng để mô tả đặc điểm của phổ năng lượng neutron dựa trên các tham số thiết kế vật liệu, cấu trúc hình học, và độ dày lớp che chắn.

scholarly journals Neutron Beam Characterization at Neutron Radiography (NRAD) Reactor East Beam Following Reactor Modifications

2021 ◽  
Vol 5 (2) ◽  
pp. 8
Author(s):  
Sam H. Giegel ◽  
Aaron E. Craft ◽  
Glen C. Papaioannou ◽  
Andrew T. Smolinski ◽  
Chad L. Pope
Keyword(s):  
Energy Spectrum ◽  
Neutron Flux ◽  
Neutron Beam ◽  
Neutron Energy ◽  
Neutron Radiography ◽  
Neutron Energy Spectrum ◽  
Neutron Beams ◽  
Cadmium Ratio ◽  
Foil Activation

The Neutron Radiography Reactor at Idaho National Laboratory (INL) has two beamlines extending radially outward from the east and north faces of the reactor core. The control rod withdrawal procedure has recently been altered, potentially changing power distribution of the reactor and thus the properties of the neutron beams, calling for characterization of the neutron beams. The characterization of the East Radiography Station involved experiments used to measure the following characteristics: Neutron flux, neutron beam uniformity, cadmium ratio, image quality, and the neutron energy spectrum. The ERS is a Category-I neutron radiography facility signifying it has the highest possible rank a radiography station can achieve. The thermal equivalent neutron flux was measured using gold foil activation and determined to be 9.61 × 106 ± 2.47 × 105 n/cm2-s with a relatively uniform profile across the image plane. The cadmium ratio measurement was performed using bare and cadmium-covered gold foils and measured to be 2.05 ± 2.9%, indicating large epithermal and fast neutron content in the beam. The neutron energy spectrum was measured using foil activation coupled with unfolding algorithms provided by the software package Unfolding with MAXED and GRAVEL (UMG). The Monte-Carlo N-Particle (MCNP6) transport code was used to assist with the unfolding process. UMG, MCNP6, and measured foil activities were used to determine a neutron energy spectrum which was implemented into the MCNP6 model of the east neutron beam to contribute to future studies.

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