By Nate Lindsey1, Anna Wagner2, Shan Dou3, Ian Ekblaw3, Art Gelvin2, Stephanie Saari2, Todd Wood3, Alex Morales3, Craig Ulrich3, Barry Freifeld3, Tom Daley3, Jonathan Ajo-Franklin3
1. University of California, Berkeley/Lawrence Berkeley National Laboratory 2. CRREL 3. Lawrence Berkeley National Laboratory