Measurement of Cosmogenic Production Rates in Ge with CDMSlite
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Authors
Fascione, Eleanor
Date
Type
thesis
Language
eng
Keyword
dark matter , physics , cosmogenics , production rates , supercdms
Alternative Title
Abstract
The majority of matter in the Universe is non-luminous, non-baryonic, and as of yet undiscovered. The SuperCDMS experiment searches for this "dark matter" in the form of Weakly Interacting Massive Particles (WIMPs), operating semiconducting detectors at cryogenic temperatures to measure energy deposits from dark matter interactions. These efforts have resulted in world leading limits on the interactions of dark matter with ordinary matter. The next phase of SuperCDMS is under construction at SNOLAB near Sudbury, ON.
Interaction of cosmic rays with detector material can result in the production of radioactive isotopes, the decay of which results in background in the measured energy spectrum. Tritium is expected to be the limiting background for SuperCDMS SNOLAB. Production rates of tritium and other cosmogenic isotopes are not well known, with a wide spread in theoretical calculated rates and only a single measurement previously published for tritium. The work in this thesis details the measurement of cosmogenic production rates using low energy spectra measured by SuperCDMS.
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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.