Pulse processing in TES detectors: comparative of different short filter methods based on optimal filtering: case study for Athena X-IFU

Beatriz Cobo; Nicolás Cardiel; María Teresa Ceballos; Philippe Peille

doi:10.1117/12.2562733

28 December 2020 Pulse processing in TES detectors: comparative of different short filter methods based on optimal filtering: case study for Athena X-IFU

Beatriz Cobo, Nicolás Cardiel, María Teresa Ceballos, Philippe Peille

Author Affiliations +

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 1144496 (2020) https://doi.org/10.1117/12.2562733
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The X-IFU instrument to be on board the X-ray Athena Observatory is a cryogenic microcalorimeter array of TES detectors aimed at providing spatially resolved high-resolution spectroscopy. The reconstruction software will provide energy, position and arrival time of the incoming X-ray photons that produce current pulses in the detector. Different modifications of the standard optimal filtering algorithm have been compared to process pulses shorter than those considered of high resolution (those where the full length is not available due to a close pulse after them) to select the best algorithm based on energy resolution and computing performance results. We can conclude that the best approach is that of the 0-padding filtering. However further checks about its sensibility to instrumental changes (baseline, bias voltage, etc.) are required.

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Beatriz Cobo, Nicolás Cardiel, María Teresa Ceballos, and Philippe Peille "Pulse processing in TES detectors: comparative of different short filter methods based on optimal filtering: case study for Athena X-IFU", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 1144496 (28 December 2020); https://doi.org/10.1117/12.2562733

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