Assembly development for the Simons Observatory focal plane readout module

Abstract

The Simons Observatory (SO) is a suite of instruments sensitive to temperature and polarization of the cosmic microwave background (CMB) to be located at Cerro Toco in the Atacama Desert in Chile. Five telescopes, one large aperture telescope and four small aperture telescopes, will host roughly 70,000 highly multiplexed transition edge sensor (TES) detectors operated at 100 mK. Each SO focal plane module (UFM) couples 1,764 TESes to microwave resonators in a microwave multiplexing (uMux) readout circuit. Before detector integration, the 100 mK uMux components are packaged into multiplexing modules (UMMs), which are independently validated to ensure they meet SO performance specifications. Here we present the assembly developments of these UMM readout packages for mid frequency (90/150 GHz) and ultra high frequency (220/280 GHz) UFMs.

References in corpus (8)

• The Simons Observatory: Science goals and forecasts
• Study of loss in superconducting coplanar waveguide resonators
• BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization
• Maps of the Southern Millimeter-wave Sky from Combined 2500 deg${}^2$ SPT-SZ and Planck Temperature Data
• Readout of two-kilopixel transition-edge sensor arrays for Advanced ACTPol
• Feedhorn development and scalability for Simons Observatory and beyond
• Simons Observatory Microwave SQUID Multiplexing Readout -- Cryogenic RF Amplifier and Coaxial Chain Design
• The Simons Observatory: Magnetic Sensitivity Measurements of Microwave SQUID Multiplexers

Cited by in corpus (6)

• The Simons Observatory microwave SQUID multiplexing detector module design
• The Simons Observatory 220 and 280 GHz Focal-Plane Module: Design and Initial Characterization
• The Integration and Testing Program for the Simons Observatory Large Aperture Telescope Optics Tubes
• The Simons Observatory: Magnetic Shielding Measurements for the Universal Multiplexing Module
• The Simons Observatory: Large-Scale Characterization of 90/150 GHz TES Detector Modules
• Simons Observatory Focal-Plane Module: Detector Re-biasing With Bias-step Measurements