26 September 2013 Characterization of Si hybrid CMOS detectors for use in the soft x-ray band
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Abstract
We report on the characterization of four HAWAII Hybrid Si CMOS detectors (HCD) developed for use as X-ray detectors as part of a joint program between Penn State University and Teledyne Imaging Sensors (TIS). Interpixel capacitive crosstalk (IPC) has been measured for standard H1RG detectors as well as a specially developed H2RG that uses a unique bonding structure. The H2RG shows significant reduction in IPC, as reported by Griffith et al. 2012. Energy resolution at 1.5 & 5.9 keV was measured as well as read noise for each detector. Dark current as a function of temperature is reported from 150 – 210 K and dark current figures of merit are estimated for each detector. We also discuss upcoming projects including testing of a new HCD called the Speedster-EXD. This prototype detector will have a low noise, high gain CTIA to reduce IPC and read noise as well as in-pixel CDS and event flagging. In the coming year PSU and TIS will begin work on a project to incorporate CTIA and CDS circuitry into the ROIC of a HAWAII HCD like detector to satisfy the small pixel and high rate needs of future X-ray observatories.
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Zachary R. Prieskorn, Zachary R. Prieskorn, Christopher V. Griffith, Christopher V. Griffith, Stephen D. Bongiorno, Stephen D. Bongiorno, Abraham D. Falcone, Abraham D. Falcone, David N. Burrows, David N. Burrows, } "Characterization of Si hybrid CMOS detectors for use in the soft x-ray band", Proc. SPIE 8859, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII, 88590J (26 September 2013); doi: 10.1117/12.2024259; https://doi.org/10.1117/12.2024259
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