DarkSide Document 1671-v1

Analysis of Alphas Backgrounds in DarkSide-50 (APS Talk)

Document #:
DarkSide-doc-1671-v1
Document type:
External Talk
Submitted by:
Alissa Monte
Updated by:
Alissa Monte
Document Created:
23 Jan 2017, 11:13
Contents Revised:
02 Feb 2017, 11:13
Metadata Revised:
03 Feb 2017, 03:47
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Abstract:
DarkSide-50 is the current phase of the DarkSide direct dark matter search program, operating underground at the Laboratori Nazionali del Gran Sasso in Italy. The detector is a dual-phase argon Time Projection Chamber (TPC), designed for direct detection of Weakly Interacting Massive Particles, and housed within an active veto system of liquid scintillator and water Cherenkov detectors. Since switching to a target of low radioactivity argon extracted from underground sources in April, 2016, the background is no longer dominated by naturally occurring 39Ar. However, alpha backgrounds from radon and its daughters remain, both from the liquid argon bulk and internal detector surfaces. I will present details of the analysis used to understand and quantify alpha backgrounds, as well as to understand other types of radon contamination that may be present, and our sensitivity to them.
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