Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session R10: WIMP Dark Matter IV
1:30 PM–3:18 PM,
Monday, April 15, 2019
Sheraton
Room: Governor's Square 12
Sponsoring
Unit:
DPF
Chair: Reina Maruyama, Yale University
Abstract: R10.00008 : An Improved Nuclear Recoil Calibration in the LUX Detector Using a Pulsed D-D Neutron Generator
2:54 PM–3:06 PM
View Presentation Abstract
Presenter:
Dongqing Huang
(Brown University)
Author:
Dongqing Huang
(Brown University)
The LUX dark matter experiment has measured the nuclear recoil charge (Qy) and light (Ly) yields in liquid xenon (LXe) down to 0.7 keVnr and 1.1 keVnr, respectively, in situ using a D-D neutron calibration source. Improvements in the D-D calibration have been possible by incorporating pulsing technique with narrow pulses (20 us / 250 Hz). This technique allows the suppression of accidental backgrounds in D-D neutron data and also provides increased sensitivity for the lower energy NR calibrations. I will report the improved NR absolute Qy and Ly measurements using the pulsed D-D calibration technique performed in situ in the LUX detector. This in situ energy calibration, using pulsed D-D neutron, represents the lowest energy NR that has been explored in liquid Xe and are accompanied by a significant improvement in calibration uncertainty.
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