Scintillation pulse shape discrimination in a two-phase xenon time projection chamber

J. Kwong*, P. Brusov, T. Shutt, C. E. Dahl, A. I. Bolozdynya, A. Bradley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


The energy and electric field dependence of pulse shape discrimination in liquid xenon have been measured in a 10 g two-phase xenon time projection chamber. We have demonstrated the use of the pulse shape and charge-to-light ratio simultaneously to obtain a leakage below that achievable by either discriminant alone. A Monte Carlo is used to show that the dominant fluctuation in the pulse shape quantity is statistical in nature, and project the performance of these techniques in larger detectors. Although the performance is generally weak at low energies relevant to elastic WIMP recoil searches, the pulse shape can be used in probing for higher energy inelastic WIMP recoils.

Original languageEnglish (US)
Pages (from-to)328-333
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2
StatePublished - Jan 1 2010


  • Dark matter
  • Pulse shape discrimination
  • Time projection chamber
  • Two-phase detectors
  • Xenon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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