Author/Authors :
Dobi، نويسنده , , A. and Hall، نويسنده , , C. and Herrin، نويسنده , , S. and Odian، نويسنده , , A. and Prescott، نويسنده , , C.Y. and Rowson، نويسنده , , P.C. and Ackerman، نويسنده , , N. and Aharmin، نويسنده , , B. and Auger، نويسنده , , M. and Barbeau، نويسنده , , P.S. and Barry، نويسنده , , K. and Benitez-Medina، نويسنده , , C. and Breidenbach، نويسنده , , M. and Cook، نويسنده , , S. and Counts، نويسنده , , I. R. Daniels، نويسنده , , T. an، نويسنده ,
Abstract :
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 GPMʹs 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.
Keywords :
Electronegative ion , Space charge , argon , tungsten oxide , Purification , Xenon
