Design and performance of the Spider instrument
M. C. Runyan, P. A. R. Ade, M. Amiri, S. Benton, R. Bihary, J. J., Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, H. C. Chiang, C. R. Contaldi,, B. P. Crill, O. Dore, D. O'Dea, M. Farhang, J. P. Filippini, L. Fissel, N., Gandilo, S. R. Golwala, J. E. Gudmundsson, M. Hasselfield
TL;DR
The paper details the design, construction, and performance evaluation of the Spider balloon-borne instrument for mapping cosmic microwave background polarization across multiple frequencies.
Contribution
It introduces the comprehensive design and performance analysis of the Spider instrument, including novel insights into its optical, thermal, and magnetic shielding systems.
Findings
Successful demonstration of the 145 GHz prototype performance
High sensitivity and low noise achieved in the instrument
Effective magnetic shielding of TES sensors and SQUIDs
Abstract
Here we describe the design and performance of the Spider instrument. Spider is a balloon-borne cosmic microwave background polarization imager that will map part of the sky at 90, 145, and 280 GHz with sub-degree resolution and high sensitivity. This paper discusses the general design principles of the instrument inserts, mechanical structures, optics, focal plane architecture, thermal architecture, and magnetic shielding of the TES sensors and SQUID multiplexer. We also describe the optical, noise, and magnetic shielding performance of the 145 GHz prototype instrument insert.
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