Physics – Instrumentation and Detectors
Scientific paper
2011-06-09
Physics
Instrumentation and Detectors
41 pages, 26 figures
Scientific paper
We discuss the design, operation, and calibration of two versions of a xenon gas purity monitor (GPM) developed for the EXO double beta decay program. The devices are sensitive to concentrations of oxygen well below 1 ppb at an ambient gas pressure of one atmosphere or more. The theory of operation of the GPM is discussed along with the interactions of oxygen and other impurities with the GPM's tungsten filament. Lab tests and experiences in commissioning the EXO-200 double beta decay experiment are described. These devices can also be used on other noble gases.
William Fairbank Jr.
Ackerman Nicole
Aharmin B.
Auger Martin
Barbeau P. S.
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