Optimization of a cryogenic transition-edge sensor detector array for far-infrared astrophysics

Locke D. Spencer; Rashmi V. Sudiwala; Chris S. Benson; Jeremy P. Scott; Manimeldura Dinula De Silva; Tyrone Jones; James Cox; Ken Wood; Peter A. R. Ade

doi:10.1117/12.2630723

27 August 2022 Optimization of a cryogenic transition-edge sensor detector array for far-infrared astrophysics

Locke D. Spencer, Rashmi V. Sudiwala, Chris S. Benson, Jeremy P. Scott, Manimeldura Dinula De Silva, Tyrone Jones, James Cox, Ken Wood, Peter A. R. Ade

Author Affiliations +

Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave; 121802S (2022) https://doi.org/10.1117/12.2630723
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

We describe the commissioning and operation of a 25 element Transition-Edge Sensor (TES) cryogenic detector array system for use in the far-infrared band of the electromagnetic spectrum. This detector system, supplied by QMC Instruments Limited, is an integral component to the development of a spatial/spectral double Fourier laboratory-based interferometer testbed instrument within the Astronomical Instrumentation Group laboratories at the University of Lethbridge, Canada. The 5x5 rectangular grid of TES elements is feedhorn-coupled and operates at ∼6K within a dedicated cryostat providing both optical and thermal shielding. Cryogenic cooling of ∼0.5W is provided by a CryoMech PT405RM/CP2850 pulse-tube cooler/compressor suite. The detector readout system uses time-division multiplexing controlled by a dedicated National Instruments field-programmable gate array board and computer interface. This paper describes the characterization and optimization of this detector system, including the evaluation and validation of the readout electronics, hardware, software, detector noise properties, the multiplexing parameter space, optical sensitivity, and the integration of this system within a laboratory testbed interferometer instrument.

Conference Presentation

Citation Download Citation

Locke D. Spencer, Rashmi V. Sudiwala, Chris S. Benson, Jeremy P. Scott, Manimeldura Dinula De Silva, Tyrone Jones, James Cox, Ken Wood, and Peter A. R. Ade "Optimization of a cryogenic transition-edge sensor detector array for far-infrared astrophysics", Proc. SPIE 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, 121802S (27 August 2022); https://doi.org/10.1117/12.2630723

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