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We summarize recent results from our NASA-funded technology development program to develop imaging sensors required for future strategic missions, and describe the prototype CCD sensor we are developing for AXIS, the Advanced X-ray Imaging Satellite mission concept recently proposed in response to NASA’s Astrophysics Probe Explorer call. We have designed and are fabricating at MIT Lincoln Laboratory a 16-output, 1440 x 1440 pixel frame-store CCD to serve as a form/fit/function prototype for AXIS. This sensor incorporates the low-voltage, single-polysilicon gate and low-noise pJFET technologies we have proven in previous work. Our goal is to demonstrate a device meeting or exceeding the noise, spectral resolution and frame-rate requirements of AXIS when operated with the Multi-channel Readout Chip developed by our team at Stanford University. We also describe our strategy for optimizing CCD output amplifier architecture and design for even lower noise and faster readout for AXIS and subsequent high-energy astrophysics missions.
Progress toward fast, low-noise, low-power CCDs for Lynx and other high-energy astrophysics missions
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