21 September 2012 The on-board electronics for the near infrared spectrograph and photometer (NISP) of the EUCLID Mission
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The Near Infrared Spectrograph and Photometer (NISP) is one of the instruments on board the EUCLID mission. The focal plane array (FPA) consists of 16 HAWAII-2RG HgCdTe detectors from Teledyne Imaging Scientific (TIS), for NIR imaging in three bands (Y, J, H) and slitless spectroscopy in the range 0.9−2µm. Low total noise measurements (i.e. total noise < 8 electrons) are achieved by operating the detectors in multiple non-destructive readout mode for the implementation of both the Fowler and Up-The-Ramp (UTR) sampling, which also enables the detection and removal of cosmic ray events. The large area of the NISP FPA and the limited satellite telemetry available impose to perform the required data processing on board, during the observations. This requires a well optimized on-board data processing pipeline, and high-performance control electronics, suited to cope with the time constraints of the NISP acquisition sequences. This paper describes the architecture of the NISP on-board electronics, which take charge of several tasks, including the driving of each individual HAWAII-2RG detectors through their SIDECAR ASICs, the data processing, inclusive of compression and storage, and the instrument control tasks. We describe the implementation of the processing power needed for the demanding on-board data reduction. We also describe the basic operational modes that will be managed by the system during the mission, along with data flow and the Telemetry/TeleCommands flow. This paper reports the NISP on-board electronics architecture status at the end of the Phase B1, and it is presented on behalf of the Euclid Consortium.
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Leonardo Corcione, Leonardo Corcione, Sebastiano Ligori, Sebastiano Ligori, Favio Bortoletto, Favio Bortoletto, Carlotta Bonoli, Carlotta Bonoli, Luca Valenziano, Luca Valenziano, Rafael Toledo-Moreo, Rafael Toledo-Moreo, Maurizio D'Alessandro, Maurizio D'Alessandro, Massimo Trifoglio, Massimo Trifoglio, Gianluca Morgante, Gianluca Morgante, Carlos Colodro-Conde, Carlos Colodro-Conde, Rafael Rebolo-López, Rafael Rebolo-López, Jacinto Muñoz, Jacinto Muñoz, Isidro Villò, Isidro Villò, "The on-board electronics for the near infrared spectrograph and photometer (NISP) of the EUCLID Mission", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 844232 (21 September 2012); doi: 10.1117/12.926004; https://doi.org/10.1117/12.926004

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