ESA’s Science Payload Validation section (SCI-FIV) is developing a new detector test bench to expand its existing suite of test facilities and enable the characterisation of larger detectors (4k x 4k 15 μm pitch devices), sensitive over the visible to mid-wave infrared wavelengths (300-4000 nm) and at colder temperatures (down to 20 K). In this contribution we describe the main requirements of the bench, the novel mechanical and thermal concepts of the modular cryostat, as well as the requirements of the readout electronics chain, including a new detector controller. We also present ESA’s package and flex design for Leonardo’s LAPD (Large-format Avalanche Photo Diode array) device, the first detector to be tested with this new bench.
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