A 4-by-4 high impedance NbSi TES array for high resolution X-ray spectro-imaging

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-03-05 DOI:10.1016/j.nima.2025.170369

Benjamin Criton , Stefanos Marnieros , Jean-Luc Sauvageot , Xavier de la Broïse , Laurent Bergé

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引用次数: 0

Abstract

We conduct an R&D project on high impedance TES detectors aiming to minimise the focal plane power consumption while having high spectral and spatial resolutions. In this article we review the development of 4-by-4 Niobium–Silicon (NbSi) Transition-Edge-Sensor (TES) arrays. The 16 membrane pixels are suspended by thin (5

μ

m thick) Silicon bridges that ensure electrical wiring and a weak thermal link to the heat sink. We fabricate these arrays on Silicon On Insulator (SOI) wafers with different pixel-to-substrate bridge lengths, widths, orientations and numbers to experimentally determine the Silicon heat conduction at 100 mK. We also design different NbSi TES meanders to measure the electron–phonon decoupling effect, the various heat capacities (Si, NbSi, absorber) and the slope of the superconducting transitions. These chips will help to better understand and control the physical parameters for future optimised developments. This constitutes, in addition with our 50 mK CMOS multiplexing ASIC and our 4 K HEMT-SiGe amplifier, a scaled-down prefiguration of an X-ray cryogenic detector chain for astrophysics.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.