The final chapter describes the XENON10 detector, its operation at the Gran Sasso National Laboratory, Tiffany Notes analysis of the data, and the results of the WIMP search. The WIMP limit set by the Xenon10 experiment in 2007 signals a new era in direct detection of Tiffany Pendants matter, with several large-scale liquid target detectors now under construction. A major challenge in these detectors will be to understand backgrounds at the level necessary to claim a positive WIMP signal. In liquid xenon, these backgrounds are dominated by electron recoils, which may be distinguished from the WIMP signal (nuclear recoils) by their higher charge-to-light ratio. During the construction and operation of Xenon10, the prototype detector Tiffany Rings probed the physics of this discrimination. Particle interactions in liquid xenon both ionize and excite xenon atoms, giving charge and scintillation Tiffany Sets, respectively.
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