Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Preflight Characterization of the BLAST-TNG Receiver and Detector Arrays   The Next Generation Balloon-borne Large Aperture Submillimeter Telescope
(BLAST-TNG) is a submillimeter mapping experiment planned for a 28 day
long-duration balloon (LDB) flight from McMurdo Station, Antarctica during the
2018-2019 season. BLAST-TNG will detect submillimeter polarized interstellar
dust emission, tracing magnetic fields in galactic molecular clouds. BLAST-TNG
will be the first polarimeter with the sensitivity and resolution to probe the
$\sim$0.1 parsec-scale features that are critical to understanding the origin
of structures in the interstellar medium.
  BLAST-TNG features three detector arrays operating at wavelengths of 250,
350, and 500 $\mu$m (1200, 857, and 600 GHz) comprised of 918, 469, and 272
dual-polarization pixels, respectively. Each pixel is made up of two crossed
microwave kinetic inductance detectors (MKIDs). These arrays are cooled to 275
mK in a cryogenic receiver. Each MKID has a different resonant frequency,
allowing hundreds of resonators to be read out on a single transmission line.
This inherent ability to be frequency-domain multiplexed simplifies the
cryogenic readout hardware, but requires careful optical testing to map out the
physical location of each resonator on the focal plane. Receiver-level optical
testing was carried out using both a cryogenic source mounted to a movable
xy-stage with a shutter, and a beam-filling, heated blackbody source able to
provide a 10-50 $^\circ$C temperature chop. The focal plane array noise
properties, responsivity, polarization efficiency, instrumental polarization
were measured. We present the preflight characterization of the BLAST-TNG
cryogenic system and array-level optical testing of the MKID detector arrays in
the flight receiver.

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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ph
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The categories of this paper are: cs