Purification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+

The SNO+ experiment has begun research and development to engineer replacing the heavy water in the Sudbury Neutrino Observatory with liquid scintillator in order to study low energy solar neutrinos, double beta decay, and many other exciting physics topics. Experimentation and simulation have been...

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Main Author: Quirk, Sarah Elizabeth.
Other Authors: Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))
Format: Others
Language:en
en
Published: 2008
Online Access:http://hdl.handle.net/1974/1023
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spelling ndltd-LACETR-oai-collectionscanada.gc.ca-OKQ.1974-10232013-12-20T03:38:35ZPurification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+Quirk, Sarah Elizabeth.The SNO+ experiment has begun research and development to engineer replacing the heavy water in the Sudbury Neutrino Observatory with liquid scintillator in order to study low energy solar neutrinos, double beta decay, and many other exciting physics topics. Experimentation and simulation have been combined to evaluate the purification of the liquid scintillator, linear alkylbenzene, for the SNO+ pro ject. Four radiopurification methods were tested: water and acid extraction, adsorption and distillation. The combination of adsorption and distillation yielded the best results with a reduction factor of 10000. Optical purification tests showed that double distillation and the combination of adsorption and distillation provided the best method of removing optical impurities from the liquid scintillator. Simulation studies showed that it is necessary to minimize internal radioisotopes: 210 Bi, 210 Pb, uranium chain, thorium chain, and 40 K in order to achieve desired uncertainty levels in the measurement of the pep solar neutrino signal.Thesis (Master, Physics, Engineering Physics and Astronomy) -- Queen's University, 2008-01-25 11:07:16.153Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))2008-01-25 11:07:16.1532008-02-05T18:16:22Z2008-02-05T18:16:22Z2008-02-05T18:16:22ZThesis9346861 bytesapplication/pdfhttp://hdl.handle.net/1974/1023enenCanadian thesesThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.
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en
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description The SNO+ experiment has begun research and development to engineer replacing the heavy water in the Sudbury Neutrino Observatory with liquid scintillator in order to study low energy solar neutrinos, double beta decay, and many other exciting physics topics. Experimentation and simulation have been combined to evaluate the purification of the liquid scintillator, linear alkylbenzene, for the SNO+ pro ject. Four radiopurification methods were tested: water and acid extraction, adsorption and distillation. The combination of adsorption and distillation yielded the best results with a reduction factor of 10000. Optical purification tests showed that double distillation and the combination of adsorption and distillation provided the best method of removing optical impurities from the liquid scintillator. Simulation studies showed that it is necessary to minimize internal radioisotopes: 210 Bi, 210 Pb, uranium chain, thorium chain, and 40 K in order to achieve desired uncertainty levels in the measurement of the pep solar neutrino signal. === Thesis (Master, Physics, Engineering Physics and Astronomy) -- Queen's University, 2008-01-25 11:07:16.153
author2 Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))
author_facet Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))
Quirk, Sarah Elizabeth.
author Quirk, Sarah Elizabeth.
spellingShingle Quirk, Sarah Elizabeth.
Purification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+
author_sort Quirk, Sarah Elizabeth.
title Purification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+
title_short Purification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+
title_full Purification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+
title_fullStr Purification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+
title_full_unstemmed Purification of liquid scintillator and Monte Carlo simulations of relevant internal backgrounds in SNO+
title_sort purification of liquid scintillator and monte carlo simulations of relevant internal backgrounds in sno+
publishDate 2008
url http://hdl.handle.net/1974/1023
work_keys_str_mv AT quirksarahelizabeth purificationofliquidscintillatorandmontecarlosimulationsofrelevantinternalbackgroundsinsno
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