Speaker
Dr
Changbo Fu
(Shanghai Jiaotong University)
Description
Understanding, controlling and reducing experimental background is crucial in dark matter searching experiments. In this report, we review various radiation sources shown in the PandaX experiment[1,2], as well as the strategies of controlling and reducing them. These background sources include cosmic ray, Radon, the passively shielding materials, the vessels holding the Xe, the detector materials, and 85Kr contamination in Xenon itself. All materials used in the experiment were scrutinized before hands. A Monte Carlo code is used to simulate the experiment, and to understand the background. This report will focus on the technics of distillation tower for Kr removal, and homemaking low-background stainless steel used in the PandaX project.
1. PandaX Collabration, First dark matter search results from the PandaX-I experiment, Science China 57, 2024(2014), http://arxiv.org/abs/1408.5114
2. PandaX Collabration, PandaX: A Liquid Xenon Dark Matter Experiment at CJPL, http://arxiv.org/abs/1405.2882 http://arxiv.org/abs/1405.2882
Primary author
Dr
Changbo Fu
(Shanghai Jiaotong University)
Co-author
Prof.
Xiangdong Ji
(University of Maryland)
