A regenerable filter for liquid argon purification

A. Curioni, B. T. Fleming, W. Jaskierny, C. Kendziora, J. Krider, S. Pordes, M. Soderberg, J. Spitz, T. Tope, T. Wongjirad

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


A filter system for removing electronegative impurities from liquid argon is described. The active components of the filter are adsorbing molecular sieve and activated-copper-coated alumina granules. The system is capable of purifying liquid argon to an oxygen-equivalent impurity concentration of better than 30 parts per trillion, corresponding to an electron drift lifetime of at least 10 ms. Reduction reactions that occur at ∼ 250 {ring operator} C allow the filter material to be regenerated in situ through a simple procedure. In the following work we describe the filter design, performance, and regeneration process.

Original languageEnglish (US)
Pages (from-to)306-311
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
StatePublished - Jul 1 2009
Externally publishedYes


  • LArTPC
  • Liquid argon
  • Neutrino
  • Oscillation
  • Purity

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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