Large arrays of dual-polarized multichroic TES detectors for CMB measurements with the SPT-3G receiver

Posada, C. M.; Anderson, A. J.; Avva, J. S.; Ahmed, Zeeshan; Arnold, K.; Austermann, J. E.; Bender, A. N.; Benson, B. A.; Bleem, L. E.; Byrum, K.; Carlstrom, J. E.; Carter, Faustin W.; Chang, C. L.; Cho, Hsiao-Mei; Cukierman, A.; Czaplewski, David A.; Ding, J.; Divan, Ralu; Haan, T. de; Dobbs, M.; Dutcher, D.; Everett, W.; Gannon, Renae N.; Guyser, R.; Halverson, N. W.; Harrington, N. L.; Hattori, K.; Henning, J. W.; Hilton, G. C.; Holzapfel, W. L.; Huang, N.; Irwin, K. D.; Jeong, O.; Khaire, Trupti; Korman, M.; Kubik, D.; Kuo, Chao-Lin; Lee, Adrian T.; Leitch, E. M.; Escudero, Sergi Lendinez; Meyer, S. S.; Miller, Claire A.; Montgomery, J.; Nadolski, A.; Natoli, T.; Nguyen, H. T.; Novosad, V.; Padin, S.; Pan, Z.; Pearson, John; Rahlin, A.; Reichardt, Christian; Ruhl, J. E.; Saliwanchik, B. R.; Shirley, I.; Sayre, J. T.; Shariff, J. A.; Shirokoff, E.; Stan, Liliana; Stark, A. A.; Sobrin, J. A.; Story, K. T.; Suzuki, Aritoki; Tang, Q. Y.; Thakur, R. Basu; Thompson, K. L.; Tucker, C.; Vanderlinde, K.; Vieira, J. D.; Wang, Gensheng; Whitehorn, N.; Yefremenko, V.; Yoon, K. W.

doi:10.1117/12.2232912

Cited by 10 publications

(8 citation statements)

References 16 publications

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“…Such factors as film deposition conditions 3 , and interaction with the substrate 4 and other materials 5 during fabrication and operation can significantly change the film properties and SC transition shape. Sharp, stable SC transitions are a critical requirement for the 16,000 TESs in the South Pole Telescope SPT-3G camera 6 , so we have investigated the impact of electrical contact design and materials on the SC transition shape.…”

Section: Impact Of Electrical Contacts Design and Materials On The Stmentioning

confidence: 99%

Impact of Electrical Contacts Design and Materials on the Stability of Ti Superconducting Transition Shape

et al. 2018

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Section: Impact Of Electrical Contacts Design and Materials On The Stmentioning

confidence: 99%

Impact of Electrical Contacts Design and Materials on the Stability of Ti Superconducting Transition Shape

et al. 2018

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“…Such detector pairs, implemented in practice using polarization sensitive bolometers (PSBs), have been used in the High Frequency Instrument (HFI) of the Planck space mission [24]. Multichroic versions using Transition Edge Sensors (TESs), in which each focal plane pixel comprises six detectors, observing each in one of two orthogonal polarisations and one of three independent frequency bands, are being deployed in ground-based experiments [25,26], and are foreseen as the baseline for the low frequency telescope in the LiteBIRD space mission [27].…”

Section: Model Of the Bandpass Leakage Systematic Effectmentioning

confidence: 99%

Bandpass mismatch error for satellite CMB experiments II: correcting for the spurious signal

Banerji

Patanchon

Delabrouille

et al. 2019

J. Cosmol. Astropart. Phys.

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Future Cosmic Microwave Background (CMB) satellite missions aim at using the B-mode polarisation signal to measure the tensor-to-scalar ratio r with a sensitivity σ(r) of the order of ≤ 10 −3 . Small uncertainties in the characterisation of instrument properties such as the spectral filters can lead to a leakage of the intensity signal to polarisation and can possibly bias any measurement of a primordial signal. In this paper we discuss methods for avoiding and correcting for the intensity to polarisation leakage due to bandpass mismatch among detector sets. We develop a template fitting map-maker to obtain an unbiased estimate of the leakage signal and subtract it out of the total signal. Using simulations we show how such a method can reduce the bias on the observed B-mode signal by up to 3 orders of magnitude in power.

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“…29 Additional details on the SPT-3G pixel design and its performance can be found in previous publications. [30][31][32] The detectors are fabricated on six-inch silicon wafers each containing 269 pixels (see the right hand panel of Figure 3). There are ten of the hexagonal detector wafers in the SPT-3G focal plane for a total of 16,140 TES bolometers.…”

Section: Detectorsmentioning

confidence: 99%

Year two instrument status of the SPT-3G cosmic microwave background receiver

Bender,

Ade,

Ahmed

et al. 2018

Preprint

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The South Pole Telescope (SPT) is a millimeter-wavelength telescope designed for high-precision measurements of the cosmic microwave background (CMB). The SPT measures both the temperature and polarization of the CMB with a large aperture, resulting in high resolution maps sensitive to signals across a wide range of angular scales on the sky. With these data, the SPT has the potential to make a broad range of cosmological measurements. These include constraining the effect of massive neutrinos on large-scale structure formation as well as cleaning galactic and cosmological foregrounds from CMB polarization data in future searches for inflationary gravitational waves. The SPT began observing in January 2017 with a new receiver (SPT-3G) containing ∼16,000 polarizationsensitive transition-edge sensor bolometers. Several key technology developments have enabled this large-format focal plane, including advances in detectors, readout electronics, and large millimeter-wavelength optics. We discuss the implementation of these technologies in the SPT-3G receiver as well as the challenges they presented. In late 2017 the implementations of all three of these technologies were modified to optimize total performance. Here, we present the current instrument status of the SPT-3G receiver.

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Large arrays of dual-polarized multichroic TES detectors for CMB measurements with the SPT-3G receiver

Cited by 10 publications

References 16 publications

Impact of Electrical Contacts Design and Materials on the Stability of Ti Superconducting Transition Shape

Impact of Electrical Contacts Design and Materials on the Stability of Ti Superconducting Transition Shape

Bandpass mismatch error for satellite CMB experiments II: correcting for the spurious signal

Year two instrument status of the SPT-3G cosmic microwave background receiver

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