AC/DC characterization of a Ti/Au TES with Au/Bi absorber for X-ray detection

no code implementations • 18 Feb 2021 • E. Taralli, C. Pobes, P. Khosropanah, L. Fabrega, A. Camon, L. Gottardi, K. Nagayoshi, M. Ridder, M. Bruijn, J. R. Gao

In order to assess the performances of TESs to be used with FDM, it is thus of great interest to compare the performances of the same device both under AC and DC bias.

Instrumentation and Detectors

Characterization of high aspect ratio TiAu TES X-ray microcalorimeters array using the X-IFU Frequency Domain Multiplexing readout

no code implementations • 18 Feb 2021 • E. Taralli, L. Gottardi, K. Nagayoshi, M. Ridder, S. Visser, P. Khosropanah, H. Akamatsu, J. van der Kuur, M. Bruijn, J. R. Gao

We are developing X-ray microcalorimeters as a backup option for the baseline detectors in the X-IFU instrument on board the ATHENA space mission led by ESA and to be launched in the early 2030s. 5$\times$5 mixed arrays with TiAu transition-edge sensor (TES), which have different high aspect ratios and thus high resistances, have been designed and fabricated to meet the energy resolution requirement of the X-IFU instrument.

Instrumentation and Detectors

Complex impedance of TESs under AC bias using FDM readout system

no code implementations • 18 Feb 2021 • E. Taralli, P. Khosropanah, L. Gottardi, K. Nagayoshi, M. L. Ridder, M. P. Bruijn, J. R. Gao

Complex impedance measurement of a TES is the only technique that can give all this information at once, but it has been established only for a single pixel under DC bias.

Instrumentation and Detectors

Performance and uniformity of a kilo-pixel array of Ti/Au transition-edge sensor microcalorimeters

no code implementations • 18 Feb 2021 • E. Taralli, M. D'Andrea, L. Gottardi, K. Nagayoshi, M. L. Ridder, M. de Wit, D. Vaccaro, H. Akamatsu, M. P. Bruijn, J. R. Gao

We found a large region of detector's bias points between 20\% and 40\% of the normal-state resistance where the energy resolution is constantly lower than 3 eV.

Instrumentation and Methods for Astrophysics Instrumentation and Detectors

Frequency Shift Algorithm: Application to a Frequency-Domain Multiplexing Readout of X-ray Transition-Edge Sensor Microcalorimeters

no code implementations • 11 Feb 2021 • D. Vaccaro, H. Akamatsu, J. van der Kuur, P. van der Hulst, A. C. T. Nieuwenhuizen, P. van Winden, L. Gottardi, R. den Hartog, M. P. Bruijn, M. D'Andrea, J. R. Gao, J. W. A. den Herder, R. W. M. Hoogeveen, B. Jackson, A. J. van der Linden, K. Nagayoshi, K. Ravensberg, M. L. Ridder, E. Taralli, M. de Wit

In the frequency-domain multiplexing (FDM) scheme, transition-edge sensors (TES) are individually coupled to superconducting LC filters and AC biased at MHz frequencies through a common readout line.

Instrumentation and Methods for Astrophysics