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Development of a Xe calibration source for nEXO
B. G. Lenardo, C. A. Hardy, R. H. M. Tsang +125
We study a possible calibration technique for the nEXO experiment using a Xe electron capture source. nEXO is a next-generation search for neutrinoless double beta decay ($…
High sensitivity, levitated microsphere apparatus for short-distance force measurements
Akio Kawasaki, Alexander Fieguth, Nadav Priel +3
A high sensitivity force sensor based on dielectric microspheres in vacuum, optically trapped by a single, upward-propagating laser beam, is described. Off-axis parabolic mirrors a…
Absolute pressure and gas species identification with an optically levitated rotor
Charles P. Blakemore, Denzal Martin, Alexander Fieguth +4
The authors describe a novel variety of spinning-rotor vacuum gauge in which the rotor is a m-diameter silica microsphere, optically levitated. A rotating elec…
Wide band spectroscopic response of monocrystallines to low dose neutron and gamma radiation
Yossi Mosbacher, Micha Weiss, Hagar Landsman +7
We identify a number of crystalline structures with promising characteristics to serve as a detection medium for a novel Dark Matter (DM) detector with a low threshold energy. A de…
Precision Mass and Density Measurement of Individual Optically Levitated Microspheres
Charles P. Blakemore, Alexander D. Rider, Sandip Roy +4
We report an mass measurement of approximately-m-diameter, optically levitated microspheres with an electrostatic co-levitation technique. The mas…
Material radioassay and selection for the XENON1T dark matter experiment
XENON Collaboration, E. Aprile, J. Aalbers +118
The XENON1T dark matter experiment aims to detect Weakly Interacting Massive Particles (WIMPs) through low-energy interactions with xenon atoms. To detect such a rare event necessi…
Online Rn removal by cryogenic distillation in the XENON100 experiment
XENON Collaboration, E. Aprile, J. Aalbers +119
We describe the purification of xenon from traces of the radioactive noble gas radon using a cryogenic distillation column. The distillation column is integrated into the gas purif…
Removing krypton from xenon by cryogenic distillation to the ppq level
XENON Collaboration, E. Aprile, J. Aalbers +119
The XENON1T experiment aims for the direct detection of dark matter in a cryostat filled with 3.3 tons of liquid xenon. In order to achieve the desired sensitivity, the background…
Results from a Calibration of XENON100 Using a Source of Dissolved Radon-220
The XENON Collaboration, E. Aprile, J. Aalbers +118
A Rn-220 source is deployed on the XENON100 dark matter detector in order to address the challenges in calibration of tonne-scale liquid noble element detectors. We show that the P…
Observation and applications of single-electron charge signals in the XENON100 experiment
E. Aprile, M. Alfonsi, K. Arisaka +77
The XENON100 dark matter experiment uses liquid xenon in a time projection chamber (TPC) to measure xenon nuclear recoils resulting from the scattering of dark matter Weakly Intera…