Advanced electronics development for temperature control in X-IFU's ADR system

A. Bounab; E. Doumayrou; A. Attard; J.-L. Durand; J.-M. Duval; M. Lortholary; S. Martin; F. Pinsard

doi:10.1117/12.3019779

27 August 2024 Advanced electronics development for temperature control in X-IFU's ADR system

A. Bounab, E. Doumayrou, A. Attard, J.-L. Durand, J.-M. Duval, M. Lortholary, S. Martin, F. Pinsard

Author Affiliations +

Proceedings Volume 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI; 131031T (2024) https://doi.org/10.1117/12.3019779
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

This paper details the development of the Adiabatic Demagnetization Refrigerator (ADR) control electronics for X-IFU instrument, of ESA’s newAthena observatory. The ADR operates in a closed loop using a PID system, where the voltage bias is regulated based on the temperature measurements. The core of this work details the design and development of two electronics board prototypes, a differential low noise amplifier and a power supply board, addressing the unique space constraints and operational requirements. The ultra-low noise amplifier is designed to readout a 50mK resistive sensor. We have achieved a noise level of 2nV/√Hz which is critical for addressing the challenges of thermal stability (0.8μK RMS at 50mK), essential to achieve the instrument’s target resolution of 2.5eV. Preliminary results of the ADR cooler’s performance and its control electronics will be presented, emphasizing the temperature regulation achievements during the observation phase.

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

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A. Bounab, E. Doumayrou, A. Attard, J.-L. Durand, J.-M. Duval, M. Lortholary, S. Martin, and F. Pinsard "Advanced electronics development for temperature control in X-IFU's ADR system", Proc. SPIE 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI, 131031T (27 August 2024); https://doi.org/10.1117/12.3019779

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