27 July 2016 Integrated system tests of the LSST raft tower modules
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Abstract
The science focal plane of the LSST camera is made up of 21 fully autonomous 144 Mpixel imager units designated raft tower modules (RTM). These imagers incorporate nine 4K x 4K fully-depleted CCDs and 144 channels of readout electronics, including a dedicated CMOS video processing ASIC and components that provide CCD biasing and clocking, video digitization, thermal stabilization, and a high degree of monitoring and telemetry. The RTM achieves its performance goals for readout speed, read noise, linearity, and crosstalk with a power budget of less than 400mW/channel. Series production is underway on the first units and the production will run until 2018. We present the RTM final design, tests of the integrated signal chain, and performance results for the fully-integrated module with pre-production CCDs.
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P. O'Connor, P. O'Connor, P. Antilogus, P. Antilogus, P. Doherty, P. Doherty, J. Haupt, J. Haupt, S. Herrmann, S. Herrmann, M. Huffer, M. Huffer, C. Juramy-Giles, C. Juramy-Giles, J. Kuczewski, J. Kuczewski, S. Russo, S. Russo, C. Stubbs, C. Stubbs, R. Van Berg, R. Van Berg, "Integrated system tests of the LSST raft tower modules", Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99150X (27 July 2016); doi: 10.1117/12.2232729; https://doi.org/10.1117/12.2232729
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