Energy Loss Due to Defect Formation from $^{206}$Pb Recoils in SuperCDMS Germanium Detectors
Instrumentation and Detectors
2019-04-17 v3 Cosmology and Nongalactic Astrophysics
Applied Physics
Abstract
The Super Cryogenic Dark Matter Search experiment (SuperCDMS) at the Soudan Underground Laboratory studied energy loss associated with Frenkel defect formation in germanium crystals at mK temperatures using in situ Pb sources. We examine the spectrum of Pb nuclear recoils near its expected 103 keV endpoint energy and determine an energy loss of %, which we attribute to defect formation. From this result and using TRIM simulations, we extract the first experimentally determined average displacement threshold energy of eV for germanium. This has implications for the analysis thresholds of future germanium-based dark matter searches.
Keywords
Cite
@article{arxiv.1805.09942,
title = {Energy Loss Due to Defect Formation from $^{206}$Pb Recoils in SuperCDMS Germanium Detectors},
author = {Robert Agnese and Taylor Aralis and Tsuguo Aramaki and Isaac Arnquist and Elham Azadbakht and William Baker and Samir Banik and D'Ann Barker and Dan Bauer and Thomas Binder and Michael Bowles and Paul Brink and Ray Bunker and Blas Cabrera and Robert Calkins and Concetta Cartaro and David Cerdeno and Yen-Yung Chang and Jodi Cooley and Brett Cornell and Priscilla Cushman and Philippe Di Stefano and Todd Doughty and Eleanor Fascione and Tali Figueroa and Caleb Fink and Matt Fritts and Gilles Gerbier and Richard Germond and Muad Ghaith and Sunil Golwala and Rusty Harris and Ziqing Hong and Eric Hoppe and Lauren Hsu and Martin Huber and Vijay Iyer and Dan Jardin and Chitrasen Jena and Michael Kelsey and Allison Kennedy and Andrew Kubik and Noah Kurinsky and Richard Lawrence and Ben Loer and Elias Lopez-Asamar and Pat Lukens and Danika MacDonell and Rupak Mahapatra and Vuk Mandic and Nicholas Mast and Eric Miller and Nader Mirabolfathi and Bedangadas Mohanty and Jorge Morales and Jack Nelson and John Orrell and Scott Oser and William Page and Richard Partridge and Mark Pepin and Francisco Ponce and Sudip Poudel and Matt Pyle and Hang Qiu and Wolfgang Rau and Angela Reisetter and Tom Ren and Tyler Reynolds and Amy Roberts and Alan Robinson and Hannah Rogers and Tarek Saab and Bernard Sadoulet and Joel Sander and Andrew Scarff and Richard Schnee and Silvia Scorza and Kartik Senapati and Bruno Serfass and Danielle Speller and Matthew Stein and Joseph Street and Hirohisa Tanaka and David Toback and Ryan Underwood and Anthony Villano and Belina von Krosigk and Samuel Watkins and Jon Wilson and Matthew Wilson and Joshua Winchell and Dennis Wright and Steve Yellin and Betty Young and Xiaohe Zhang and Xuji Zhao},
journal= {arXiv preprint arXiv:1805.09942},
year = {2019}
}
Comments
4 Figures, Two data files, One data release description file