Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 55: Data, AI, Computing, Electronics VI (DAQ and Trigger)
T 55.6: Vortrag
Mittwoch, 2. April 2025, 17:30–17:45, VG 2.102
Compact converters for fast frame rate detectors — •Kennedy Caisley1, Hans Krüger1, Bart Dierickx2, and Jochen Dingfelder1 — 1University of Bonn, Bonn, Germany — 2Caeleste, Mechelen, Belgium
Frame-based radiation detectors with integrating front-ends are especially well-suited for applications like electron microscopy and X-ray imaging where hit-rates are high, spatial resolution should be maximized with simple pixels, and energy resolution is needed, but particles need not be individually discriminated in time, space, or spectrum. In an experimental setting, fast frame rates allow for real time in-situ observations. Potential subjects include rapid chemical processes, molecular dynamics of proteins, crystal nucleation and growth, material phase transitions, thermal conductivity, charge transfer, and mechanical strain.
Our work pursues the possibility of a single-reticle array larger than 1 Mpixel with a continuous frame-rate surpassing 100,000 fps. For the conjunction of these two specifications to be met, we will discuss initial investigations into a compact and power efficient bank of column-parallel data converters, which at 10-12 bit resolution churn out data at a rate in excess of 1000 Gbps. To fit within the constraints of a chip bottom, the converter fabric must respect a restricted metric of 1 W/cm2 while exceeding a 5 ksps/µm2 sampling rate density. Successive-approximation ADCs are identified as the optimal choice, and various topologies and techniques will be analyzed to meet our goals.
Keywords: Image sensors; Detectors; Data converters; Imaging; High-speed