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Title: An RF-only ion-funnel for extraction from high-pressure gases

An RF ion-funnel technique has been developed to extract ions from a high-pressure (10 bar) noble-gas environment into a vacuum (10(-6) mbar). Detailed simulations have been performed and a prototype has been developed for the purpose of extracting Ba-136 ions from Xe gas with high efficiency. With this prototype, ions have been extracted for the first time from high-pressure xenon gas and argon gas. Systematic studies have been carried out and compared to simulations. This demonstration of extraction of ions, with mass comparable to that of the gas generating the high-pressure, has applications to Ba tagging from a Xe-gas time-projection chamber for double-beta decay, as well as to the general problem of recovering trace amounts of an ionized element in a heavy (m > 40 u) carrier gas. (C) 2015 Elsevier B.V. All rights reserved.
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  1. Stanford University
  2. Institute for Theoretical and Experimental Physics, Moscow
  3. TRIUMF, Canada
  4. Carleton University, Ottawa, Canada
  5. Colorado State University, Fort Collins
  6. Indiana University
  7. University of Alabama, Tuscaloosa
  8. Duke University
  9. University of Illinois at Urbana-Champaign
  10. SLAC National Accelerator Laboratory
  11. Chinese Academy of Sciences (CAS), Institute of High Energy Physics
  12. Laurentian University, Canada
  13. Drexel University
  14. ORNL
  15. Technische Universitat Munchen, Germany
  16. University of Bern, Switzerland
  17. Lawrence Livermore National Laboratory (LLNL)
  18. University of Massachusetts, Amherst
  19. Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia
  20. Institute of Theoretical & Experimental Physics (ITEP), Moscow, Russia
  21. Stony Brook University
  22. University of Seoul, Korea
  23. University of South Dakota
Publication Date:
OSTI Identifier:
1325463
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
International Journal of Mass Spectrometry
Additional Journal Information:
Journal Volume: 379; Journal ID: ISSN 1387-3806
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
RF-funnel; Gas dynamic and ion trajectory; simulations; Gas jet; Xe-136 double-beta decay; Ba tagging; Ion transport; DOUBLE-BETA DECAY; MAJORANA NEUTRINOS; MASS-SPECTROMETER; SENSITIVITY; INTERFACE; TRAP; COMPUTER; EXO-200; XE