Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Status Update of the MAJORANA DEMONSTRATOR Neutrinoless Double Beta
  Decay Experiment   Neutrinoless double beta decay searches play a major role in determining
neutrino properties, in particular the Majorana or Dirac nature of the neutrino
and the absolute scale of the neutrino mass. The consequences of these searches
go beyond neutrino physics, with implications for Grand Unification and
leptogenesis. The \textsc{Majorana} Collaboration is assembling a
low-background array of high purity Germanium (HPGe) detectors to search for
neutrinoless double-beta decay in $^{76}$Ge. The \textsc{Majorana
Demonstrator}, which is currently being constructed and commissioned at the
Sanford Underground Research Facility in Lead, South Dakota, will contain 44 kg
(30 kg enriched in $^{76}$Ge) of HPGe detectors. Its primary goal is to
demonstrate the scalability and background required for a tonne-scale Ge
experiment. This is accomplished via a modular design and projected background
of less than 3 cnts/tonne-yr in the region of interest. The experiment is
currently taking data with the first of its enriched detectors.

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The categories of this paper are: cs
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The categories of this paper are: math
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: solv-int