Optimization of Neutron Shielding for the PICASSO Experiment
The PICASSO experiment searches WIMPs via their spin-dependent interactions with nuclei. At their operating temperatures, PICASSO threshold detectors are not sensitive to {gamma}-rays, while it is necessary to suppress neutron and {alpha}-ray backgrounds. The different types of neutron shielding (wa...
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| creator | Archambault, S. Aubin, F. Auger, M. Genest, M.-H. Giroux, G. Gornea, R. Faust, R. Leroy, C. Lessard, L. Martin, J.-P. Kumaratunga, S. Piro, M.-C. Starinski, N. Zacek, V. Behnke, E. Levine, I. Shepherd, T. Beltran, B. Krauss, C. MacDonald, R. |
| description | The PICASSO experiment searches WIMPs via their spin-dependent interactions with nuclei. At their operating temperatures, PICASSO threshold detectors are not sensitive to {gamma}-rays, while it is necessary to suppress neutron and {alpha}-ray backgrounds. The different types of neutron shielding (water, polyethylene, borated water and polyethylene doped with different compounds of boron and lithium) were studied via the Monte Carlo method using MCNPX code. Efficiencies of these different types of neutron shielding were compared from the point of view of neutron suppression as well as number of newly born y-rays. The neutrons and {gamma}-rays were followed up to the PICASSO detector active material. The most suitable neutron shielding for the PICASSO experiment was determined following these simulations. |
| doi_str_mv | 10.1063/1.3266086 |
| format | Conference Proceeding |
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At their operating temperatures, PICASSO threshold detectors are not sensitive to {gamma}-rays, while it is necessary to suppress neutron and {alpha}-ray backgrounds. The different types of neutron shielding (water, polyethylene, borated water and polyethylene doped with different compounds of boron and lithium) were studied via the Monte Carlo method using MCNPX code. Efficiencies of these different types of neutron shielding were compared from the point of view of neutron suppression as well as number of newly born y-rays. The neutrons and {gamma}-rays were followed up to the PICASSO detector active material. 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At their operating temperatures, PICASSO threshold detectors are not sensitive to {gamma}-rays, while it is necessary to suppress neutron and {alpha}-ray backgrounds. The different types of neutron shielding (water, polyethylene, borated water and polyethylene doped with different compounds of boron and lithium) were studied via the Monte Carlo method using MCNPX code. Efficiencies of these different types of neutron shielding were compared from the point of view of neutron suppression as well as number of newly born y-rays. The neutrons and {gamma}-rays were followed up to the PICASSO detector active material. The most suitable neutron shielding for the PICASSO experiment was determined following these simulations.</abstract><cop>United States</cop><doi>10.1063/1.3266086</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2009, Vol.1180 (1) |
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| language | eng |
| recordid | cdi_osti_scitechconnect_21322960 |
| source | AIP Journals Complete |
| subjects | BUBBLE CHAMBERS COMPUTERIZED SIMULATION GAMMA RADIATION INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY M CODES MONTE CARLO METHOD MULTIPARTICLE SPECTROMETERS NEUTRON SPECTRA NEUTRONS OPTIMIZATION PARTICLE IDENTIFICATION PARTICLE INTERACTIONS POSTULATED PARTICLES SHIELDING SHIELDING MATERIALS SPIN THRESHOLD DETECTORS WEAK INTERACTIONS |
| title | Optimization of Neutron Shielding for the PICASSO Experiment |
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