The Daedalus sensor is the next version of the nanosecond time-gated, multi-frame hybridized CMOS (hCMOS) x-ray sensor, developed by Sandia National Laboratories (SNL). The Daedalus sensor leverages previous hCMOS features such as nanosecond gated frames while expanding features for increased record length, improved full well depth, and one-side abutment capability. The second version of the Daedalus sensor, the DV2, resolves an increased record length feature called interlacing in addition to the sensor’s ability to hold the integrated electrical charge from photocurrent for longer periods of time needed for full dynamic range during readout. The DV2 sensor characteristics, including background oscillations, skew, key sensor features for timing and high full well, and mapping of the internal temperature sensor are presented and discussed.
KEYWORDS: Cameras, National Ignition Facility, Logic, Field programmable gate arrays, Imaging systems, Sensors, Data modeling, X-ray imaging, Diagnostics, Power supplies
The National Ignition Facility’s (NIF) high-yield DT shots create a harsh radiation environment that can cause electronics to malfunction. This paper documents various design tradeoffs and techniques used for a Microsemi FPGA to reduce the impact of Single Event Upsets (SEUs) that enable a camera to capture images in the NIF target chamber during a high-yield shot.
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