Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

Details Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

2006-08-06

arxiv.org/abs/astro-ph/0608137v2

Nucl.Instrum.Meth.A579:451-453,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 6 figures, submitted to DM06 conference proceedings in Nucl Phys B

Scientific paper

10.1016/j.nima.2007.04.104

We extend the study of the performance of a prototype two-phase liquid xenon WIMP dark matter detector to recoil energies below 20 keV. We demonstrate a new method for obtaining the best estimate of the energies of events using a calibrated sum of charge and light signals and introduce the corresponding discrimination parameter, giving its mean value at 4 kV/cm for electron and nuclear recoils up to 300 and 100 keV, respectively. We show that fluctuations in recombination limit discrimination for most energies, and reveal an improvement in discrimination below 20 keV due to a surprising increase in ionization yield for low energy electron recoils. This improvement is crucial for a high-sensitivity dark matter search.

Affiliated with

Also associated with

No associations

Rating

Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-394641