Xenon purity analysis for EXO-200 via mass spectrometry

A. Dobi, C. Hall, S. Slutsky, Y. R. Yen, B. Aharmin, M. Auger, P. S. Barbeau, C. Benitez-Medina, M. Breidenbach, B. Cleveland, R. Conley, J. Cook, S. Cook, I. Counts, W. Craddock, T. Daniels, C. G. Davis, J. Davis, R. Devoe, M. DixitM. J. Dolinski, K. Donato, W. Fairbank, J. Farine, P. Fierlinger, D. Franco, G. Giroux, R. Gornea, K. Graham, G. Gratta, C. Green, C. Hagemann, K. Hall, D. Hallman, C. Hargrove, S. Herrin, M. Hughes, J. Hodgson, F. Juget, A. Karelin, L. J. Kaufman, A. Kuchenkov, K. Kumar, D. S. Leonard, G. Lutter, D. MacKay, R. MacLellan, M. Marino, B. Mong, M. Montero Díez, P. Morgan, A. R. Müller, R. Neilson, A. Odian, K. Osullivan, A. Piepke, A. Pocar, C. Y. Prescott, K. Pushkin, A. Rivas, E. Rollin, P. C. Rowson, A. Sabourov, D. Sinclair, K. Skarpaas, V. Stekhanov, V. Strickland, M. Swift, K. Twelker, J. L. Vuilleumier, J. M. Vuilleumier, M. Weber, U. Wichoski, J. Wodin, J. D. Wright, L. Yang

Research output: Contribution to journalArticlepeer-review


We describe purity measurements of the natural and enriched xenon stockpiles used by the EXO-200 double beta decay experiment based on a mass spectrometry technique. The sensitivity of the spectrometer is enhanced by several orders of magnitude by the presence of a liquid nitrogen cold trap, and many impurity species of interest can be detected at the level of one part-per-billion or better. We have used the technique to screen the EXO-200 xenon before, during, and after its use in our detector, and these measurements have proven useful. This is the first application of the cold trap mass spectrometry technique to an operating physics experiment.

Original languageEnglish (US)
Pages (from-to)40-46
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
StatePublished - May 21 2012
Externally publishedYes


  • Double beta decay
  • Mass spectrometry
  • Purity
  • Xenon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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