The characterisation of a PID feedback-controlled array of TES-bolometers in a far-infrared double-Fourier interferometry testbed

Chris S. Benson; Jeremy P. Scott; Locke D. Spencer; Rashmi V. Sudiwala; James Cox; Tyrone Jones; Berke V. Ricketti; David Naylor; Ken Wood; Peter A. R. Ade

doi:10.1117/12.3019289

16 August 2024 The characterisation of a PID feedback-controlled array of TES-bolometers in a far-infrared double-Fourier interferometry testbed

Chris S. Benson, Jeremy P. Scott, Locke D. Spencer, Rashmi V. Sudiwala, James Cox, Tyrone Jones, Berke V. Ricketti, David Naylor, Ken Wood, Peter A. R. Ade

Author Affiliations +

Proceedings Volume 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; 1310210 (2024) https://doi.org/10.1117/12.3019289
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Double-Fourier interferometry (DFI) from a space-based platform provides a path to achieve broadband imaging spectroscopy in the far-infrared with sub-arcsecond angular resolution. To provide further study of the technique and improve its technology readiness, we have constructed a laboratory-based DFI testbed. This instrument is coupled to a custom array of 25 feedback-controlled transition-edge sensor (TES) bolometers. We present the results of characterisation experiments to optimise the detector system as an integrated component of the DFI assembly. We demonstrate that tuning the proportional-integral-derivative (PID) feedback control loops of the detectors and the timing of the multiplexed measurement process can modify the detector array’s noise performance and speed of response to optical modulation for this purpose. From these, we have determined a set of optimised detector settings that reduce spectral noise in the spatial-spectral interferometer by 37–79%. In addition, we present further thermal characterisation of the detector array.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Chris S. Benson, Jeremy P. Scott, Locke D. Spencer, Rashmi V. Sudiwala, James Cox, Tyrone Jones, Berke V. Ricketti, David Naylor, Ken Wood, and Peter A. R. Ade "The characterisation of a PID feedback-controlled array of TES-bolometers in a far-infrared double-Fourier interferometry testbed", Proc. SPIE 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, 1310210 (16 August 2024); https://doi.org/10.1117/12.3019289

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