Rejecting Outer Radius Backgrounds in SuperCDMS High Voltage Dark Matter Searches
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Authors
Underwood, Ryan
Date
Type
thesis
Language
eng
Keyword
Dark Matter , SuperCDMS , Luke Amplification , CDMSlite , Radial Cut
Alternative Title
Abstract
SuperCDMS searches for Dark Matter in the form of WIMPs. SuperCDMS is able to reject most common background events by discriminating between electron and nuclear recoils. In the CDMS low ionization threshold experiment mode, electron recoil discrimination is sacrificed when applying a stronger electric potential across the detector. The electric field associated with this potential is not uniform, and the amplification of the phonon signal caused by drifting charges through this potential creates a radial dependence on the reconstructed energy. This thesis explores a new method of identifying and rejecting events at the edge of the detector in order to improve the ratio of signal to background by excluding background events with improperly reconstructed energy.
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Citation
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License
CC0 1.0 Universal
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This 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.
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This 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.