Study of the Response of PICASSO Bubble Detectors to Neutron Irradiation

• PICASSO experiment

• Author / Creator

  Marlisov, Daniiar

• 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.

• Subjects / Keywords

  • PICASSO

• Graduation date

  Spring 2013

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R31H1Q

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.