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Single-electron and single-photon sensitivity with a silicon Skipper CCD
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Single-electron and single-photon sensitivity with a silicon Skipper CCD
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We have developed a non-destructive readout system that uses a floating-gate amplifier on a thick, fully depleted charge coupled device (CCD) to achieve ultra-low readout noise of 0.068 e- rms/pix. This is the first time that discrete sub-electron readout noise has been achieved reproducibly over millions of pixels on a stable, large-area detector. This allows the precise counting of the number of electrons in each pixel, ranging from pixels with 0 electrons to more than 1500 electrons. The resulting CCD detector is thus an ultra-sensitive calorimeter. It is also capable of counting single photons in the optical and near-infrared regime. Implementing this innovative non-destructive readout system has a negligible impact on CCD design and fabrication, and there are nearly immediate scientific applications. As a particle detector, this CCD will have unprecedented sensitivity to low-mass dark matter particles and coherent neutrino-nucleus scattering, while astronomical applications include future direct imaging and spectroscopy of exoplanets.
Forward citations
Cited by 7 Pith papers
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Searches for CE{\nu}NS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE
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First Production of Skipper-CCD Modules for the DAMIC-M Experiment
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Thermal Emission of Dark Photons from Earth's Core
Estimates that Earth's core thermal emission of dark photons constrains new regions of the kinetic mixing parameter ε, with SENSEI/DAMIC-M already excluding some space and Oscura potentially improving by 2-3 orders of...
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