Abstract

The \XENON100\ dark matter experiment uses liquid xenon (LXe) in a time projection chamber (TPC) to search for xenon nuclear recoils resulting from the scattering of dark matter Weakly Interacting Massive Particles (WIMPs). In this paper we present a detailed description of the detector design and present performance results, as established during the commissioning phase and during the first science runs. The active target of \XENON100\ contains 62 kg of LXe, surrounded by an ŁXe\ veto of 99 kg, both instrumented with photomultiplier tubes (PMTs) operating inside the liquid or in xenon gas. The ŁXe\ target and veto are contained in a low-radioactivity stainless steel vessel, embedded in a passive radiation shield and is installed underground at the Laboratori Nazionali del Gran Sasso (LNGS), Italy. The experiment has recently published results from a 100 live-days dark matter search. The ultimate design goal of \XENON100\ is to achieve a spin-independent WIMP-nucleon scattering cross section sensitivity of σ = 2 × 10−45 cm2 for a 100 GeV/c2 WIMP.

Tags

Users

  • @jmrcardoso

Comments and Reviews