In order to search for dark matter, it is imperative that background signals in particular from neutrons are well under control. We describe the successful techniques and leading results from our efforts in a dedicated publications:
E. Aprile et al. (XENON100), The neutron background of the XENON100 dark matter search experiment, arXiv:1306.2303. The paper is also published in Journal of Physics G 40 (2013), 115201.