Daniel Stroppa1
DECTRIS1
characterization in both Materials Sciences and Life Sciences, particularly when beam-sensitive samples are involved [1]. The hybrid-pixel detector (HPD) concept [2] has the distinctive advantage of a flexible design with respect to the sensor material and electronics, allowing the direct electron detection and counting optimization for a range of TEM experimental parameters (such as electron energy) and different applications.<br/>Building on its successful HPD technology for X-ray detectors, DECTRIS fine-tuned its design to enable the precise detection of electrons. Its most recent development is an application-specific integrated circuit (ASIC) designed to allow read-out rates above 100 kHz and to perform electron counting up to 10 pA beam current per detector pixel with zero read-out noise [3].<br/>ARINA detector combines this newly-designed ASIC with a flexible choice of sensor materials, an easy-to-use application programming interface (API), and a detector retraction mechanism, making it fit to most TEMs with electron energies from 30 to 300 keV and 4D STEM experiments requirements. Initial tests show that ARINA is suitable for flexible virtual STEM imaging with dwell time below 10 µs, allowing for flexible differential phase contrast (DPC) with atomic resolution, and electron diffraction experiments with high dynamic range for crystal phase/orientation mapping.<br/> <br/>[1] A. R. Faruqi et al., Nucl. Inst. Meth. Phys. Res. A <b>878</b> 180-190 (2018)<br/>[2] M. Bochenek et al. IEEE Trans Nucl Sci <b>65</b> (6), 1285-1291 (2018).<br/>[3] P Zambon et al., Nucl. Inst. Meth. Phys. Res. A <b>1048</b> (2023).<br/>[4] C. Ophus et al., Microsc. Microanal. 28, 390-403 (2022).