Physics – Instrumentation and Detectors
Scientific paper
2012-04-26
Physics
Instrumentation and Detectors
21 pages, 10 figures
Scientific paper
The discovery of argon from underground sources with significantly less 39Ar than atmospheric argon was an important step in the development of direct-detection dark matter experiments using argon as the active target. We report on the design and operation of a low background detector with a single phase liquid argon target that was built to study the 39Ar content of the underground argon. Underground argon from the Kinder Morgan CO2 plant in Cortez, Colorado was determined to have less than 0.65% of the 39Ar activity in atmospheric argon.
Calaprice Frank
Galbiati Cristiano
Goretti Augusto
Guray G.
Hohman Tristan
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