A xenon gas purity monitor for EXO

A. Dobi, C. Hall, S. Herrin, A. Odian, C. Y. Prescott, P. C. Rowson, N. Ackerman, B. Aharmin, M. Auger, P. S. Barbeau, K. Barry, C. Benitez-Medina, M. Breidenbach, S. Cook, I. Counts, T. Daniels, R. Devoe, M. J. Dolinski, K. Donato, W. FairbankJ. Farine, G. Giroux, R. Gornea, K. Graham, G. Gratta, M. Green, C. Hagemann, K. Hall, D. Hallman, C. Hargrove, A. Karelin, L. J. Kaufman, A. Kuchenkov, K. Kumar, J. Lacey, D. S. Leonard, F. Leport, D. MacKay, R. MacLellan, B. Mong, M. Montero Díez, A. R. Müller, R. Neilson, E. Niner, K. Osullivan, A. Piepke, A. Pocar, K. Pushkin, E. Rollin, D. Sinclair, S. Slutsky, V. Stekhanov, K. Twelker, N. Voskanian, J. L. Vuilleumier, U. Wichoski, J. Wodin, L. Yang, Y. R. Yen

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)215-228
Number of pages14
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
StatePublished - Dec 11 2011
Externally publishedYes


  • Argon
  • Electronegative ion
  • Purification
  • Space charge
  • Tungsten oxide
  • Xenon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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