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29 March 2024
 
  » arxiv » 1605.3844

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Chromatographic separation of radioactive noble gases from xenon
LUX Collaboration ; D.S. Akerib ; H.M. Araújo ; X. Bai ; A.J. Bailey ; J. Balajthy ; P. Beltrame ; E.P. Bernard ; A. Bernstein ; T.P. Biesiadzinski ; E.M. Boulton ; R. Bramante ; S.B. Cahn ; M.C. Carmona-Benitez ; C. Chan ; A.A. Chiller ; C. Chiller ; T. Coffey ; A. Currie ; J.E. Cutter ; T.J.R. Davison ; A. Dobi ; J.E.Y. Dobson ; E. Druszkiewicz ; B.N. Edwards ; C.H. Faham ; S. Fiorucci ; R.J. Gaitskell ; V.M. Gehman ; C. Ghag ; K.R. Gibson ; M.G.D. Gilchriese ; C.R. Hall ; M. Hanhardt ; S.J. Haselschwardt ; S.A. Hertel ; D.P. Hogan ; M. Horn ; D.Q. Huang ; C.M. Ignarra ; M. Ihm ; R.G. Jacobsen ; W. Ji ; K. Kamdin ; K. Kazkaz ; D. Khaitan ; R. Knoche ; N.A. Larsen ; C. Lee ; B.G. Lenardo ; K.T. Lesko ; A. Lindote ; M.I. Lopes ; A. Manalaysay ; R.L. Mannino ; M.F. Marzioni ; D.N. McKinsey ; D.-M. Mei ; J. Mock ; M. Moongweluwan ; J.A. Morad ; A.St.J. Murphy ; C. Nehrkorn ; H.N. Nelson ; F. Neves ; K. O'Sullivan ; K.C. Oliver-Mallory ; K.J. Palladino ; E.K. Pease ; K. Pech ; P. Phelps ; L. Reichhart ; C. Rhyne ; S. Shaw ; T.A. Shutt ; C. Silva ; V.N. Solovov ; P. Sorensen ; S. Stephenson ; T.J. Sumner ; M. Szydagis ; D.J. Taylor ; W. Taylor ; B.P. Tennyson ; P.A. Terman ; D.R. Tiedt ; W.H. To ; M. Tripathi ; L. Tvrznikova ; S. Uvarov ; J.R. Verbus ; R.C. Webb ; J.T. White ; T.J. Whitis ; M.S. Witherell ; F.L.H. Wolfs ; K. Yazdani ; S.K. Young ; C. Zhang ;
Date 12 May 2016
AbstractThe Large Underground Xenon (LUX) experiment operates at the Sanford Underground Research Facility to detect nuclear recoils from the hypothetical Weakly Interacting Massive Particles (WIMPs) on a liquid xenon target. Liquid xenon typically contains trace amounts of the noble radioactive isotopes $^{85}$Kr and $^{39}$Ar that are not removed by the {em in situ} gas purification system. The decays of these isotopes at concentrations typical of research-grade xenon would be a dominant background for a WIMP search exmperiment. To remove these impurities from the liquid xenon, a chromatographic separation system based on adsorption on activated charcoal was built. 400,kg of xenon was processed, reducing the average concentration of krypton from 130,ppb to 3.5,ppt as measured by a cold-trap assisted mass spectroscopy system. A 50 kg batch spiked to 0.001 g/g of krypton was processed twice and reduced to an upper limit of 0.2 ppt.
Source arXiv, 1605.3844
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