Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Optical Design and Characterization of 40-GHz Detector and Module for the BICEP Array

Soliman, A., Ade, P. A. R., Ahmed, Z., Amiri, M., Barkats, D., Thakur, R. Basu, Bischoff, C. A., Bock, J. J., Boenish, H., Bullock, E., Buza, V., Cheshire, J., Connors, J., Cornelison, J., Crumrine, M., Cukierman, A., Dierickx, M., Duband, L., Fatigoni, S., Filippini, J. P., Hall, G., Halpern, M., Harrison, S., Henderson, S., Hildebrandt, S. R., Hilton, G. C., Hui, H., Irwin, K. D., Kang, J., Karkare, K. S., Karpel, E., Kefeli, S., Kovac, J. M., Kuo, C. L., Lau, K., Megerian, K. G., Moncelsi, L., Namikawa, T., Nguyen, H. T., O'Brient, R., Palladino, S., Prouve, T., Precup, N., Pryke, C., Racine, B., Reintsema, C. D., Richter, S., Schmitt, B., Schwarz, R., Sheehy, C. D., Schillaci, A., Germaine, T. St., Steinbach, B., Sudiwala, R. V., Thompson, K. L., Tucker, Carole ORCID:, Turner, A. D., Umiltà, C., Vieregg, A. G., Wandui, A., Weber, A. C., Wiebe, D. V., Willmert, J., Wu, W. L. K., Yang, E., Yoon, K. W., Young, E., Yu, C. and Zhang, C. 2020. Optical Design and Characterization of 40-GHz Detector and Module for the BICEP Array. Journal of Low Temperature Physics 199 (3-4) , 1118. 10.1007/s10909-019-02299-z

Full text not available from this repository.


Families of cosmic inflation models predict a primordial gravitational-wave background that imprints B-mode polarization pattern in the cosmic microwave background (CMB). High-sensitivity instruments with wide frequency coverage and well-controlled systematic errors are needed to constrain the faint B-mode amplitude. We have developed antenna-coupled transition edge sensor arrays for high-sensitivity polarized CMB observations over a wide range of millimeter-wave bands. BICEP array, the latest phase of the BICEP/Keck experiment series, is a multi-receiver experiment designed to search for inflationary B-mode polarization to a precision σ(r) between 0.002 and 0.004 after 3 full years of observations, depending on foreground complexity and the degree of lensing removal. We describe the electromagnetic design and measured performance of BICEP array’s low-frequency 40-GHz detector, their packaging in focal plane modules, and optical characterization including efficiency and beam matching between polarization pairs. We summarize the design and simulated optical performance, including an approach to improve the optical efficiency due to mismatch losses. We report the measured beam maps for a new broadband corrugation design to minimize beam differential ellipticity between polarization pairs caused by interactions with the module housing frame, which helps minimize polarized beam mismatch that converts CMB temperature to polarization (T→P) anisotropy in CMB maps.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Publisher: Springer
ISSN: 0022-2291
Date of Acceptance: 3 December 2019
Last Modified: 27 Feb 2023 15:01

Actions (repository staff only)

Edit Item Edit Item