Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Atacama Large Millimeter Array (ALMA)   The Atacama Large Millimeter Array, or ALMA, is an international telescope
project which will be built over the coming decade in Northern Chile. With over
7000 m^2 of collecting area comprised of 64 12m antennas arrayed over baselines
up to 14 km in extent, ALMA will provide images of unprecedented clarity and
detail. One revolutionary feature of ALMA will be its ability to combine
interferometric and single telescope data, providing complete flux recovery.
ALMA will cover a spectral wavelength range from 7mm to 0.3 mm or shorter
wavelengths, providing astronomy with its first detailed look at the structures
which emit millimeter and submillimeter photons, the most abundant photons in
the Universe.

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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: dg-ga