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Characterization of Aliased Noise in the Advanced ACTPol Receiver.
- Source :
- Journal of Low Temperature Physics; May2020, Vol. 199 Issue 3/4, p762-770, 9p
- Publication Year :
- 2020
-
Abstract
- Advanced ACTPol is the second-generation polarization-sensitive upgrade to the 6 m aperture Atacama Cosmology Telescope (ACT), which increased detector count and frequency coverage compared to the previous ACTPol receiver. Advanced ACTPol utilizes a new two-stage time-division multiplexing readout architecture based on superconducting quantum interference devices to achieve a multiplexing factor as high as 64 (rows), fielding a 2012 detector camera at 150/220 GHz and two 90/150 GHz cameras containing 1716 detectors each. In a time-domain system, aliasing introduces noise to the readout. In this work we present a figure of merit to measure this noise contribution and present measurements of the aliased noise fraction of the Advanced ACTPol receiver as deployed. [ABSTRACT FROM AUTHOR]
- Subjects :
- SUPERCONDUCTING quantum interference devices
NOISE measurement
NOISE
Subjects
Details
- Language :
- English
- ISSN :
- 00222291
- Volume :
- 199
- Issue :
- 3/4
- Database :
- Complementary Index
- Journal :
- Journal of Low Temperature Physics
- Publication Type :
- Academic Journal
- Accession number :
- 142999061
- Full Text :
- https://doi.org/10.1007/s10909-020-02344-2