Method for rapid performance validation of large TES bolometer array for POLARBEAR-2A using a coherent millimeter-wave source
- 5 February 2021
- conference paper
- conference paper
- Published by AIP Publishing in PROCEEDINGS OF THE 14TH ASIA-PACIFIC PHYSICS CONFERENCE
- Vol. 2319 (1), 040019
- https://doi.org/10.1063/5.0038197
Abstract
POLARBEAR-2A is the first receiver for the Simons Array cosmic microwave background polarization experiment. POLARBEAR-2A has transition-edge sensor bolometers on the focal plane. Signals from bolometers are multiplexed and read out by a single SQUID. The receiver was deployed in late 2018 in Atacama, Chile, and operation started in 2019, where rapid confirmation of correspondence between bolometers and multiplexed readout channels was important as an initial step of performance validation. For this purpose, we devised a method using a coherent source that allows us to identify the frequency band and polarization sensitivity angle for each readout channel without detailed bolometer tuning.Keywords
This publication has 2 references indexed in Scilit:
- The Polarbear-2 and the Simons Array ExperimentsJournal of Low Temperature Physics, 2016
- Adaptation of frequency-domain readout for Transition Edge Sensor bolometers for the POLARBEAR-2 Cosmic Microwave Background experimentNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013