Kavli Affiliate: Dale Li
| First 5 Authors: Ian Lowe, Peter A. R. Ade, Peter C. Ashton, Jason E. Austermann, Gabriele Coppi
| Summary:
The Next Generation Balloon-borne Large Aperture Submillimeter Telescope
(BLAST-TNG) is a submillimeter polarimeter designed to map interstellar dust
and galactic foregrounds at 250, 350, and 500 microns during a 24-day Antarctic
flight. The BLAST-TNG detector arrays are comprised of 918, 469, and 272 MKID
pixels, respectively. The pixels are formed from two orthogonally oriented,
crossed, linear-polarization sensitive MKID antennae. The arrays are cooled to
sub 300mK temperatures and stabilized via a closed cycle $^3$He sorption fridge
in combination with a $^4$He vacuum pot. The detectors are read out through a
combination of the second-generation Reconfigurable Open Architecture Computing
Hardware (ROACH2) and custom RF electronics designed for BLAST-TNG. The
firmware and software designed to readout and characterize these detectors was
built from scratch by the BLAST team around these detectors, and has been
adapted for use by other MKID instruments such as TolTEC and OLIMPO. We present
an overview of these systems as well as in-depth methodology of the
ground-based characterization and the measured in-flight performance.
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