We evaluate background rejection capabilities and physics performance of a detector composed of two diverse elements: a sensitive target (filled with one or two species of liquefied noble gases) and an active veto (made of Gd-doped ultra-pure water). A GEANT4 simulation shows that for a direct WIMP search, this device can reduce the neutron background to O(1) event per year per tonne of material. Our calculation shows that an exposure of one tonne × year will suffice to exclude spin-independent WIMP-nucleon cross sections ranging from 10-9 to 10-10 pb.
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics