TY - JOUR
T1 - Design and performance of a gain calibration system for the POLARBEAR-2a receiver system at the Simons Array cosmic microwave background experiment
AU - Kaneko, Daisuke
AU - Takatori, Sayuri
AU - Hasegawa, Masaya
AU - Hazumi, Masashi
AU - Inoue, Yuki
AU - Jeong, Oliver
AU - Katayama, Nobuhiko
AU - Lee, Adrian T.
AU - Matsuda, Frederick
AU - Nishino, Haruki
AU - Siritanasak, Praween
AU - Suzuki, Aritoki
AU - Takakura, Satoru
AU - Tomaru, Takayuki
N1 - Publisher Copyright:
© The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - We present an advanced system for calibrating the detector gain responsivity with a chopped thermal source for POLARBEAR-2a, which is the first receiver system of a cosmic microwave background (CMB) polarimetry experiment: the Simons Array. Intensity-to-polarization leakage due to calibration errors between detectors can be a significant source of systematic error for a polarization-sensitive experiment. To suppress this systematic uncertainty, POLARBEAR-2a calibrates the detector gain responsivities by observing a chopped thermal source before and after each period of science observations. The system includes a high-temperature ceramic heater that emits blackbody radiation covering a wide frequency range and an optical chopper to modulate the radiation signal. We discuss the experimental requirements of gain calibration and system design to calibrate POLARBEAR-2a. We evaluate the performance of our system during the early commissioning of the receiver system. This calibration system is promising for the future generation of CMB ground-based polarization observations.
AB - We present an advanced system for calibrating the detector gain responsivity with a chopped thermal source for POLARBEAR-2a, which is the first receiver system of a cosmic microwave background (CMB) polarimetry experiment: the Simons Array. Intensity-to-polarization leakage due to calibration errors between detectors can be a significant source of systematic error for a polarization-sensitive experiment. To suppress this systematic uncertainty, POLARBEAR-2a calibrates the detector gain responsivities by observing a chopped thermal source before and after each period of science observations. The system includes a high-temperature ceramic heater that emits blackbody radiation covering a wide frequency range and an optical chopper to modulate the radiation signal. We discuss the experimental requirements of gain calibration and system design to calibrate POLARBEAR-2a. We evaluate the performance of our system during the early commissioning of the receiver system. This calibration system is promising for the future generation of CMB ground-based polarization observations.
KW - cosmic microwave background
KW - detector calibration
KW - gain calibrator
KW - transition edge sensor
UR - http://www.scopus.com/inward/record.url?scp=85193079946&partnerID=8YFLogxK
U2 - 10.1117/1.JATIS.10.1.018003
DO - 10.1117/1.JATIS.10.1.018003
M3 - 期刊論文
AN - SCOPUS:85193079946
SN - 2329-4124
VL - 10
JO - Journal of Astronomical Telescopes, Instruments, and Systems
JF - Journal of Astronomical Telescopes, Instruments, and Systems
IS - 1
M1 - 018003
ER -