Dual-sided Charge-Coupled Devices
arXiv:2307.13723 · doi:10.1103/PhysRevApplied.22.014008
Abstract
Existing Charge-Coupled Devices (CCDs) operate by detecting either the electrons or holes created in an ionization event. We propose a new type of imager, the Dual-Sided CCD, which collects and measures both charge carriers on opposite sides of the device via a novel dual-buried channel architecture. We show that this dual detection strategy provides exceptional dark-count rejection and enhanced timing capabilities. These advancements have wide-ranging implications for dark-matter searches, near-IR/optical spectroscopy, and time-domain X-ray astrophysics.
12 pages, 12 figures. v2: matches published version. Merged appendices into the main text, added dark matter projected reach plot
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