DocumentCode :
766993
Title :
GEANT simulation of the gamma nuclear gauge
Author :
Ouardi, A. ; Benchekroun, D. ; Hoummada, A. ; Alami, R.
Author_Institution :
Lab. de Phys. Nucl., Univ. Hassan, Casablanca, Morocco
Volume :
50
Issue :
4
fYear :
2003
Firstpage :
1257
Lastpage :
1270
Abstract :
The gamma nuclear gauging technique used for monitoring the sediment load suspended in water, is based on the detection of γ rays emitted by a radioactive source. The GEANT321 Monte Carlo simulation tool, originally developed at CERN for high energy physics experiments, is used for the evaluation and calibration of gamma nuclear gauges. A set of parameters, principally the source energy, the source-detector separation, the lead block thickness and the energy threshold below which the sediments elemental composition affects the measurement or the energy corresponding to the Compton and photoelectric windows separation, are discussed and evaluated in the case of the gamma scattering gauge. For the gamma transmission gauge, the GEANT321 code has been used to define the optimal source detector distance interval, particularly for the Moroccan sediment samplers, and to check the influence of the radionuclide existing in the suspension, on the gauge response accuracy. Experimental calibration was also carried out using a gamma transmission gauge and a good agreement was found between experimental and simulated results.
Keywords :
Monte Carlo methods; calibration; gamma-ray apparatus; geophysical techniques; sediments; GEANT321; Monte Carlo; Morocco; calibration; gamma nuclear gauge; gamma transmission gauge; sediment; Calibration; Energy measurement; Gamma ray detection; Gamma ray detectors; Lead; Monitoring; Scattering parameters; Sediments; Thickness measurement; Water resources;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2003.814941
Filename :
1221952
Link To Document :
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