Characterisation of the NewAthena WFI's DEPFET Flight Production's Operational Parameters
Abstract
NewAthena's Wide Field Imager (WFI) uses detectors made up from Depleted P-Channel Field Effect Transistor (DEPFET) pixels operated in rolling shutter mode. The Large Detector Array (LDA) contains a 2 × 2 array of 512 × 512 pixels Large Detectors (LDs) allowing for a field of view of 40' × 40' with a frame time of 2 ms while the 64 × 64 pixels Fast Detector (FD) can observe very bright X-ray sources due to a faster frame time of 0.08 ms. Prototype sensors (64 × 64 pixels) were used to analyse the sensor's operational range and to optimise the ASIC and DEPFET parameters i.e. current and voltage settings, as well as the DEPFET read-out timing parameters, resulting in an improved energy resolution, reduced noise and otherwise improved sensor characteristics.
Versions
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BibTeX
@misc{sommer2026characterisation,
title = {{Characterisation of the NewAthena WFI's DEPFET Flight Production's Operational Parameters}},
author = {Léonie Sommer and Johannes Müller-Seidlitz and Valentin Emberger and Robert Andritschke and Astrid Mayr and Annika Behrens and Günter Hauser and Peter Lechner and Christian Sandow and Anna Schweingruber and Jonas P. Reiffers and Elif Kutdemir Öncü},
howpublished = {arXiv},
year = {2026},
month = jun,
doi = {10.48550/arxiv.2606.19007},
eprint = {2606.19007},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.19007},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Characterisation of the NewAthena WFI's DEPFET Flight Production's Operational Parameters
AU - Léonie Sommer
AU - Johannes Müller-Seidlitz
AU - Valentin Emberger
AU - Robert Andritschke
AU - Astrid Mayr
AU - Annika Behrens
AU - Günter Hauser
AU - Peter Lechner
AU - Christian Sandow
AU - Anna Schweingruber
AU - Jonas P. Reiffers
AU - Elif Kutdemir Öncü
PY - 2026
DA - 2026/06/17
PB - arXiv
DO - 10.48550/arxiv.2606.19007
UR - https://arxiv.org/abs/2606.19007
AB - NewAthena's Wide Field Imager (WFI) uses detectors made up from Depleted P-Channel Field Effect Transistor (DEPFET) pixels operated in rolling shutter mode. The Large Detector Array (LDA) contains a 2 × 2 array of 512 × 512 pixels Large Detectors (LDs) allowing for a field of view of 40' × 40' with a frame time of 2 ms while the 64 × 64 pixels Fast Detector (FD) can observe very bright X-ray sources due to a faster frame time of 0.08 ms. Prototype sensors (64 × 64 pixels) were used to analyse the sensor's operational range and to optimise the ASIC and DEPFET parameters i.e. current and voltage settings, as well as the DEPFET read-out timing parameters, resulting in an improved energy resolution, reduced noise and otherwise improved sensor characteristics.
ER -