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Theses and Dissertations

Study of the Response of PICASSO Bubble Detectors to Neutron Irradiation Open Access

Descriptions

Other title
PICASSO experiment
Subject/Keyword
PICASSO
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Marlisov, Daniiar
Supervisor and department
Krauss, Carsten (Department of Physics)
Examining committee member and department
Duke, John (SLOWPOKE)
Marchand, Richard (Department of Physics)
Penin, Alexander (Department of Physics)
Department
Department of Physics
Specialization

Date accepted
2012-11-29T15:43:40Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
The objective of this work was to simulate the PICASSO experiment and to study the detector response to neutron irradiation. The results of the sim- ulation show the rock neutron rate to be 1-2 neutrons/day for the setup used until 2009 and less than 0.1 neutrons/day for the setup used after 2010. The shielding efficiency was calculated to be 98% and 99.6% for the two setups re- spectively. The detector response to an AmBe source was simulated. Neutron rates differ for two AmBe source spectra from the literature. The observed data rate is in agreement with the rate from the simulation. The detector stability was examined and found to be stable. The source position and orien- tation affect the detector efficiency creating a systematic uncertainity on the order of 10-35%. This uncertainity was eliminated with a source holder.
Language
English
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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