XMASS EXPERIMENT

摘要

The XMASS project utilizes ultrapure liquid xenon and aims to detect pp and ~7Be solar neutrinos by means of u + e scatterings. Our goal is a 101 scale detector in which an ultralow background can be realized in a fiducial volume. Since it requires extremely low background, it will give great opportunities for us to search for dark matter and double beta decay signals with high sensitivity. Here we will discuss a detector design common for solar neutrino and dark matter detection and a new design devoted for the double beta decay experiment. The status of the current 100 kg xenon detector will also be shown.