A multiplexer for the ac/dc characterization of TES based bolometers and microcalorimeters

TL;DR

This paper presents a multiplexer system designed for efficient AC and DC characterization of TES bolometers and microcalorimeters, enhancing throughput and measurement accuracy for space mission applications.

Contribution

It introduces a novel multiplexer tailored for TES-based detectors, improving the characterization process under AC and DC bias conditions.

Findings

Achieved dark NEP below 5×10^{-19} W/Hz^{1/2} with TiAu TES array

Demonstrated increased throughput in detector characterization

Validated performance under both AC and DC bias conditions

Abstract

At SRON we are developing the Frequency Domain Multiplexing (FDM) for the read-out of the TES-based detector array for the future infrared and X-ray space mission. We describe the performances of a multiplexer designed to increase the experimental throughput in the characterisation of ultra-low noise equivalent power (NEP) TES bolometers and high energy resolving power X-ray microcalorimeters arrays under ac and dc bias. We discuss the results obtained using the TiAu TES bolometers array fabricated at SRON with measured dark NEP below $5\cdot 10^{-19}W/Hz^{1/2}$ and saturation power of several fW