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The Snapshot: Climate issue of Southern Cultures includes photography and reflections on climate impacts across the southern states by Jenny Adler, Austin Anthony, Kate Auger, Arden Barnes, Monica Patrice Barra, Robin Boggs, Jared Bramblett, Lily Brooks, Hannah Brown, Becca Burton, Matthew Busch, Gordon Campbell, Natalie Chanin, Vanessa Charlot, Walter Coker, Justin Cook, Cameron Davidson, Marquetta Dickens, Brandon Dill, Benjamin Dimmitt, Rory Doyle, Ryan Emanuel, Cameron Evans, J Henry Fair, Megan Faust, Annie Flanagan, Kathleen Flynn, Jerod Foster, John Gaulden, Hermina Glass-Hill, Allison Grant, Jerry Dickson Greer, Joshua Dudley Greer, Anna Hamilton, Virginia Hanusik, John Lusk Hathaway, Chuck Hemard, Tom Kimmerer, Virginie Kippelen, Jeremy M. Lange, Nate Larson, Mark Long, Jordan Lovejoy, Megan May, Roger May, Lisette Morales McCabe, Rob McDonald, Andrew Moore, Stephen B. Morton, Anna Gage Norton, Jocelyn Painter, Elena Peterman, Daniel Pullen, Tom Rankin, Robert Rausch, Jeff Rich, Beth Roach, Derek Slagle, Michael O. Snyder, Michael K. Steinberg, Bryan Thomas, Jacqui Thurlow-Lippisch, Simon Tye, Turcois Vazquez, Jordan Vonderhaar, Jason Matthew Walker, Will Warasila, Carlton Ward Jr., Brooke White, William Widmer, and Devin Wright.

The MAJORNA DEMONSTRATOR is a 76Ge-based neutrinoless double-beta decay (0νββ) experiment. Staged at the 4850 ft level of the Sanford Underground Research Facility, the DEMONSTRATOR operates an array of high-purity p-type point contact Ge detectors deployed within a graded passive shield and an active muon veto system. The present work concerns the two-neutrino double-beta decay mode (2νββ) of 76Ge. For Ge detectors, having superior energy resolution (0.1%), this mode poses negligible background to the 0νββ mode, even for a ton-scale experiment. However, the measurement of the 2νββ mode allows for careful systematics checks of active detector mass, enrichment fraction, and pulse shape discrimination cuts related to both the 0νββ and 2νββ decay modes. A precision measurement of the 2νββ shape also allows searches for spectral distortions, possibly indicative of new physics, including 0νββχ. Work is underway to construct a full experimental background model enabling a Bayesian fit to the measured energy spectrum and extraction of a precise 2νββ spectrum and half-life.

The MAJORNA DEMONSTRATOR is an experiment constructed to search for neutrinoless double-beta decays in germanium-76 and to demonstrate the feasibility to deploy a ton-scale experiment in a phased and modular fashion. It consists of two modular arrays of natural and 76Ge-enriched germanium detectors totaling 44.1kg (29.7kg enriched detectors), located at the 4850' level of the Sanford Underground Research Facility in Lead, South Dakota, USA. Data taken with this setup since summer 2015 at different construction stages of the experiment show a clear reduction of the observed background index around the ROI for 0νββ- decay search due to improvements in shielding. We discuss the statistical approaches to search for a 0νββ-signal and derive the physics sensitivity for an expected exposure of 10kg y from enriched detectors using a profile likelihood based hypothesis test in combination with toy Monte Carlo data.

The Majorana Demonstrator is an experiment constructed to search for neutrinoless double-beta decays in germanium-76 and to demonstrate the feasibility to deploy a large-scale experiment in a phased and modular fashion. It consists of two modular arrays of natural and 7648 Ge-enriched germanium detectors totalling 44.1 kg, located at the 4850' level of the Sanford Underground Research Facility in Lead, South Dakota, USA. Any Neutrinoless double-beta decay search requires a thorough understanding of the background and the signal energy spectra. This talk will discuss the various techniques employed to ensure the integrity of the measured spectra. Data collection is monitored with a thorough set of checks, and subsequent careful analysis is performed to qualify the data for higher level physics analysis. Instrumental background events are tagged for removal, and problematic channels are removed from consideration as necessary.