Controlling EMCCD charge handling capacity through customized clocking

Nathan Bush; Patrick Morrissey; Michael E Hoenk; Gillian Kyne

doi:10.1117/12.2579360

13 December 2020 Controlling EMCCD charge handling capacity through customized clocking

Nathan Bush, Patrick Morrissey, Michael E Hoenk, Gillian Kyne

Proceedings Volume 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX; 114541Q (2020) https://doi.org/10.1117/12.2579360
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

EMCCDs are capable of operating in both a standard CCD mode with high dynamic range and a low-light mode with single photon sensitivity. Standard CCD mode benefits from maximizing the image area FWC, while in photon counting mode passing large signals through the EM register should be avoided. Here, we present customized clocking schemes that enhance the image area FWC of 2-phase EMCCDs by nearly a third. Serial clocking schemes are presented that provide a user configurable level of control over the register FWC for the CCD201. This dynamic control of serial FWC provides a convenient and powerful means to control the signal passing through the EM register at high at high gain values, limiting the size of cosmic ray “tails”, reducing background detector noise while also acting as a means of protection against device ageing.

Conference Presentation

Citation Download Citation

Nathan Bush, Patrick Morrissey, Michael E Hoenk, and Gillian Kyne "Controlling EMCCD charge handling capacity through customized clocking", Proc. SPIE 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX, 114541Q (13 December 2020); https://doi.org/10.1117/12.2579360

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