R & D for Future Zeplin
Abstract
We propose a new concept for a very low background multi-ton liquid xenon Dark Matter experiment. The detector consists of two concentric spheres and a charge readout device in the centre. Xenon between the two spheres forms a self-shield and veto device. The inner surface of the central sphere is coated with CsI to form an internal photocathode with minimum of 2\pi coverage for any event in the active volume. Photoelectrons from the CsI photocathode drift toward the charge readout micro-structure in the centre of the detector. Both scintillation and ionisation are measured simultaneously for background rejection and 3-D event mapping. In addition to external shielding, the low background is achieved by eliminating PMTs and by using low radioactivity pure materials throughout the detector. We present detailed calculations of the charge readout system and design details. The detector is expected to probe the full SUSY parameter space.
Cite
@article{arxiv.0705.2117,
title = {R & D for Future Zeplin},
author = {R. Bisset and M. J. Carson and H. Chagani and D. B. Cline and E. J. Daw and T. Ferbel and J. Gao and Y. S. Gao and V. A. Kudryavtsev and P. K. Lightfoot and P. Majewski and J. Maxin and J. Miller and W. C. Ooi and M. Robinson and G. Salinas and U. Schroeder and J. Seifert and F. Sergiampietri and W. Skulski and P. F. Smith and N. J. C. Spooner and J. Toke and H. Wang and J. T. White and F. Wolfs and X. Yang},
journal= {arXiv preprint arXiv:0705.2117},
year = {2009}
}