Year: 2026
Type: conference-abstract
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 80 µs. 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.
DOI: 10.1117/12.3103468
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Max-Planck-Gesellschaft
OpenAlex ID: W7167233679