Acknowledgement The SuperCDMS collaboration gratefully acknowledges SNOLAB and its staff for providing underground space and logistical and technical support. Funding and support were received from the National Science Foundation, the U.S. Department of Energy (DOE), Fermilab URA Visiting Scholar Grant No. 15-S-33, NSERC Canada, the Canada First Research Excellence Fund via the Arthur B. McDonald Institute (Canada), the Department of Atomic Energy of the Government of India (DAE), the J. C.
