Modeling of Cerenkov-Based Fiber-Optic Gamma-Ray Radiation Sensor Using Monte Carlo Simulation

2018 ◽  
Author(s):  
Hwa Jeong Han ◽  
Byung Gi Park ◽  
Beom Kyu Kim ◽  
Ji Hye Park ◽  
Won Ki Kim
Keyword(s):  
Monte Carlo ◽  
Optical Fiber ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Fiber Optic ◽  
Monte Carlo Model ◽  
Signal Propagation ◽  
Optical Signal ◽  
Radiation Environment ◽  
Monte Carlo Code

In this study, a Monte Carlo model has been developed for a Cerenkov-based fiber-optic gamma-ray sensor (CFOGRS) using the GEANT4 simulation toolkit. The detection material for gamma rays in CFOGRS is the transparent silica core of the optical fiber, which is also used for optical signal propagation. The model implemented with the GEANT4 includes the transport process of gamma rays, as well as the physical processes of Compton scattering, the Cerenkov effect, and optical photon propagation within the optical fiber. The model also simulated the applicability of the CFOGRS in a radiation environment by using the Monte Carlo code of GEANT4.

scholarly journals TARANIS XGRE and IDEE Detection Capability of Terrestrial Gamma-Ray Flashes and Associated Electron Beams

2017 ◽  
Author(s):  
David Sarria ◽  
Francois Lebrun ◽  
Pierre-Louis Blelly ◽  
Remi Chipaux ◽  
Philippe Laurent ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Energy Range ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Electron Beams ◽  
Effective Area ◽  
Detection Rates ◽  
Transient Phenomena ◽  
Preliminary Model

Abstract. With a launch expected in 2018, the TARANIS micro-satellite is dedicated to the study of transient phenomena observed in association with thunderstorms. On-board the spacecraft, XGRE and IDEE are two instruments dedicated to study Terrestrial Gamma-ray Flashes (TGFs) and associated electron beams (TEBs). XGRE can detect electrons (energy range: 1 MeV to 10 MeV) and X/gamma-rays (energy range: 20 keV to 10 MeV), with a very high counting capability (about 10 million counts per second), and the ability to discriminate one type of particle from the other. The IDEE instrument is focused on electrons in the 80 keV to 4 MeV energy range, with the ability to estimate their pitch angles. Monte-Carlo simulations of the TARANIS instruments, using a preliminary model of the spacecraft, allow sensitive area estimates for both instruments. It leads to an averaged effective area of 425 cm2 for XGRE to detect X/gamma rays from TGFs, and the combination of XGRE and IDEE gives an average effective area of 255 cm2 to detect electrons/positrons from TEBs. We then compare these performances to RHESSI, AGILE, and Fermi GBM, using performances extracted from literature for the TGF case, and with the help of Monte-Carlo simulations of their mass models for the TEB case. Combining these data with with the help of the MC-PEPTITA Monte-Carlo simulations of TGF propagation in the atmosphere, we build a self-consistent model of the TGF and TEB detection rates of RHESSI, AGILE, and Fermi. It can then be used to estimate that TARANIS should detect about 225 TGFs/year and 25 TEBs/year.

scholarly journals Investigation of the Power of Resolution of a Spark Chamber for Gamma-Ray Astronomy

1971 ◽  
Vol 41 ◽  
pp. 73-74
Author(s):  
H. A. Mayer-Hasselwander ◽  
K. Pinkau ◽  
K. H. Schenkl ◽  
W. Voges ◽  
H. J. Schneider
Keyword(s):  
Monte Carlo ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Angular Resolution ◽  
Monte Carlo Calculation ◽  
Gamma Ray Astronomy ◽  
Calculation Technique

The registration of gamma rays in a spark chamber has been simulated by Monte-Carlo-calculation technique. The spark chamber pictures of these gamma-ray events having a known energy and direction of incidence have been analysed for determinability of direction of incidence. The values obtained for angular resolution depending on energy are compared with values derived by other authors.

Optimization of Fiber-Optic Evanescent Wave Spectroscopy: A Monte Carlo Approach

2009 ◽  
Vol 63 (9) ◽  
pp. 1057-1061 ◽  
Author(s):  
M. P. Mann ◽  
S. Mark ◽  
Y. Raichlin ◽  
A. Katzir ◽  
S. Mordechai
Keyword(s):  
Monte Carlo ◽  
Optical Fiber ◽  
Electromagnetic Radiation ◽  
Monte Carlo Methods ◽  
Power Distribution ◽  
Infrared Radiation ◽  
Evanescent Wave ◽  
Fiber Optic ◽  
Evanescent Waves ◽  
Complex Geometries

The absorbance of the evanescent waves of infrared radiation transmitted through an optical fiber depends on the geometry of the fiber in addition to the wavelength of the electromagnetic radiation. The signal can thus be enhanced by flattening the midsection of the fiber. While the dependence of the absorbance on the thickness of the midsection has already been studied and experimented upon, we demonstrate that similar results are obtained using Monte Carlo methods based simply on geometrical optics, given the dimensions of the fiber and the power distribution of the fired rays. The optimization can be extended to fibers with more complex geometries of the sensor.

The Atmospheric Propagation Simulation Characteristic of the Solar Blind Ultraviolet Light

2012 ◽  
Vol 229-231 ◽  
pp. 2623-2628
Author(s):  
Li Quan Zhang
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Model ◽  
Signal Propagation ◽  
System Response ◽  
Probability Method ◽  
Earth Atmosphere ◽  
Atmospheric Propagation ◽  
Blind Area ◽  
Solar Blind ◽  
Line Of Sight Propagation

In this paper, by using Monte Carlo method to study the Solar blind area in the near-Earth atmosphere ultraviolet non-line-of-sight propagation characteristics, and the use of Point to the probability method establish a rapid Monte Carlo model, this model can effectively simulate UV with complex boundary near Earth atmosphere system response function. Comparing with the single-scatter model it shows that, this model has higher accuracy and boundary processing ability. Simulation of obstacle on ultraviolet signal distribution effects, it shows that the UV signal has strong detouring ability. Different elevation on the UV signal propagation is analyzed, the simulation results are consistent with experimental results.

scholarly journals Development of a fiber-optic system for testing instruments for monitoring nuclear power plants

2021 ◽  
Vol 2086 (1) ◽  
pp. 012160
Author(s):  
V M Pilipova ◽  
V V Davydov ◽  
V Y Rud
Keyword(s):  
Optical Fiber ◽  
Communication Systems ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Fiber Optic ◽  
Optical Signal ◽  
Signal Delay ◽  
Fiber Optic System ◽  
Testing Instruments

Abstract The necessity of testing the equipment for monitoring the operation of nuclear power plants is justified. It is proposed to use optical fiber and pulsed laser radiation for these purposes. It is established that optical fiber is more resistant to radiation than other communication systems. The design of a fiber-optic emergency simulator is developed. The calculation of its characteristics is carried out. Their experimental research was carried out. It was found that with an optical signal delay of 98.6 microseconds, the loss is – 26 dB with an uneven frequency response of ± 2 dB. This makes it possible to test the entire set of equipment that uses optical signals used to control a nuclear power plant.

scholarly journals Shielding Analysis of Metal Hydride-based Materials for Both Neutron and Gamma Rays Using Monte Carlo Simulation

2021 ◽  
Vol 59 (12) ◽  
pp. 921-925
Author(s):  
Jeongkwon Kwak ◽  
Boravy Muth ◽  
Hyeon-Woo Yang ◽  
Chang Je Park ◽  
Woo Seung Kang ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Gamma Rays ◽  
Multilayer Structure ◽  
Gamma Ray ◽  
Accurate Method ◽  
Multilayered Structure ◽  
Manufacturing Cost ◽  
Human Poisoning ◽  
Set Up

Radiation causes damage to the human body, the environment, and electronic equipment. Shielding against neutron and gamma rays is particularly difficult because of their strong ability to penetrate materials. Conventional gamma ray shields are typically made of materials containing Pb. However, they pose problems in that Pb is a heavy metal, and human poisoning and/or pollution can result from the manufacturing, use, and disposal of these materials. In addition, neutron rays are shielded by materials rich in H2 or concrete. In the case of the latter, the manufacturing cost is high. Thus, it is necessary to develop a new multilayer structure that can shield against both neutron and gamma rays. We set up a simulation model of a multilayered structure consisting of metal hydrides and heavy metals, and then evaluated the simulations using Monte Carlo N-Particle Transport Code. Monte Carlo simulation is an accurate method for simulating the interaction between radiation and materials, and can be applied to the transport of radiation particles to predict values such as flux, energy spectrum, and energy deposition. The results of the study indicated the multilayer structure of ZrH2, U, and W could shield both neutron and gamma rays, thus showing potential as a new shielding material to replace Pb and concrete.

scholarly journals Characterization and Monte Carlo simulations for a CLYC detector

2018 ◽  
Vol 48 ◽  
pp. 1860115
Author(s):  
Alessandro Borella ◽  
Eric Boogers ◽  
Riccardo Rossa ◽  
Peter Schillebeeckx
Keyword(s):  
Monte Carlo ◽  
Gamma Ray ◽  
Detection System ◽  
Nuclear Material ◽  
Point Sources ◽  
Pulse Shape Discrimination ◽  
Monte Carlo Code ◽  
Nuclear Security ◽  
Collaborative Agreement ◽  
Personal Dosimetry

The CLYC (Cs[Formula: see text]LiYCl[Formula: see text]:Ce) detector is a scintillator detector sensitive to both neutron and gamma radiation and capable of separating the two types of radiation by pulse-shape discrimination. This feature is interesting as pertains to the development of non-destructive assays for the safeguard of nuclear material, nuclear security, and fast-neutron personal dosimetry. A [Formula: see text] CLYC detector highly enriched with [Formula: see text]Li was purchased and tested with analog and digital electronics. In this work, we report on the characterization of the detector in terms of linearity, energy resolution, and full-energy efficiency for gamma rays. This characterization was achieved by measurements with calibrated gamma-ray point-sources with an analog measuring chain, in a well-defined, reproducible geometry. The experimental data were also used to validate a model of the detection system that was developed with the Monte Carlo code MCNP-CP. This work is part of a collaborative agreement between SCK•CEN and JRC-Geel.

Sign in / Sign up

Export Citation Format

Share Document