Transition-Edge Sensors for Cryogenic X-ray Imaging Spectrometers

Gottardi, L.; Smith, S. J.

doi:10.1007/978-981-16-4544-0_22-1

Cited by 7 publications

(8 citation statements)

References 146 publications

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“…Thus, the absorber support pillars that contact the membrane, and the metallic thermal links both contribute to a factor of almost ×2 higher Gb in the hydra pixels. Typically, a large inductance (L) is used in series with the TES to slow the rise of the pulse and reduce the dynamic range requirement for the readout, enabling the lowest possible readout noise 4 . The important dimensioning parameter is the “slew-rate” of the pixel, which is the maximum change in current in the TES circuit dI/dtfalse|max, at the maximum energy range of interest (which is 2 keV for LEM).…”

Section: Lms Microcalorimeter Arraymentioning

confidence: 99%

“…2.4.2. Further information of the TDM development for Athena/X-IFU and LEM can be found elsewhere 4 , 13…”

Section: Lms Microcalorimeter Arraymentioning

confidence: 99%

“…Operating at cryogenic temperatures (<100 mK) enables extremely high spectral resolution over a wide band-pass, with resolving powers of ∼3000 at 6 keV routinely demonstrated. Transition-edge sensors (TESs) are a type of microcalorimeter based on superconducting thin films, voltage biased in the transition region between the onset of resistance and the fully normal state 3 . The resistance change is determined by monitoring the current through the TES using a superconducting quantum interference device (SQUID), and a SQUID multiplexing scheme allows for the readout of many pixels 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Transition-edge sensors (TESs) are a type of microcalorimeter based on superconducting thin films, voltage biased in the transition region between the onset of resistance and the fully normal state 3 . The resistance change is determined by monitoring the current through the TES using a superconducting quantum interference device (SQUID), and a SQUID multiplexing scheme allows for the readout of many pixels 4 . This technology is well suited to the needs of next generation x-ray satellites, enabling spatially resolved, high throughput observations of extended objects such as galaxy clusters and supernova remnants, with high spectral resolution.…”

Section: Introductionmentioning

confidence: 99%

“…This technology is well suited to the needs of next generation x-ray satellites, enabling spatially resolved, high throughput observations of extended objects such as galaxy clusters and supernova remnants, with high spectral resolution. The LMS will have a 14k pixel TES array and will be readout using time-division-multiplexing (TDM) 4 . Given the diffuse and faint nature of LEM’s targets, a high-fidelity anticoincidence (antico) detector is essential to reduce the instrument background.…”

Section: Introductionmentioning

confidence: 99%

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Development of the microcalorimeter and anticoincidence detector for the Line Emission Mapper x-ray probe

Smith,

Adams,

Bandler

et al. 2023

J. Astron. Telesc. Instrum. Syst.

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.The Line Emission Mapper (LEM) is an x-ray probe mission concept that is designed to provide unprecedented insight into the physics of galaxy formation, including stellar and black-hole feedback and flows of baryonic matter into and out of galaxies. LEM incorporates a light-weight x-ray optic with a large-format microcalorimeter array. The LEM detector utilizes a 14k pixel array of transition-edge sensors (TESs) that will provide <2.5 eV spectral resolution over the energy range 0.2 to 2 keV, along with a field-of-view of 30 arcmin. The microcalorimeter array and readout builds upon the technology developed for the European Space Agency’s (ESA’s) Athena/x-ray Integral Field Unit. Here, we present a detailed overview of the baseline microcalorimeter design, its performance characteristics, including a detailed energy resolution budget and the expected count-rate capability. In addition, we outline the current status and plan for continued technology maturation. Behind the LEM array sits a high-efficiency TES-based anticoincidence (antico) detector that will reject cosmic-ray background events. We will briefly describe the design of the antico and plan for continued development.

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