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Cooling Detectors to Improve Performance: A Look at Applications and Technologies

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Scientific instruments and imaging devices are benefiting from advances in detectors. Selecting the right cooling technology improves performance and minimizes operational costs for any precision detector.

Chris Rebecchi, Helix Technology Corp.

Thermally induced noise — called dark-current noise in CCDs and Johnson noise in x-ray and gamma-ray detectors — can degrade the signal-to-noise ratio of a detector, impeding detection of weak signals. Cooling a detector reduces the leakage current, significantly enhancing sensitivity for many applications. CCDs are integrated circuits that convert light into electrons. They are installed in cameras that convert the charge stored in the CCD pixels into digital images. High-end CCD cameras, used in the most demanding scientific applications, require cooling to help detect dim light...Read full article

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    Published: June 2005
    CCDdark-current noisedefenseFeaturesindustrialMicroscopySensors & DetectorsThermally induced noise

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