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 GPMs 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.
|Number of pages||14|
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|State||Published - Dec 11 2011|
Bibliographical noteFunding Information:
EXO is supported by the Department of Energy and the National Science Foundation in the United States, NSERC in Canada, FNS in Switzerland and the Ministry for Science and Education of the Russian Federation in Russia. The SLAC National Accelerator Laboratory operates under Department of Energy contract number DE-AC02-76SF00515.
- Electronegative ion
- Space charge
- Tungsten oxide
ASJC Scopus subject areas
- Nuclear and High Energy Physics