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Image Intensifiers and Detectors -- Hybrid Photo Diode (HPD) -- View Larger Image
Image Intensifiers and Detectors -- Hybrid Photo Diode (HPD)-Image

The PHOTONIS Hybrid Photo Diode provides an alternate technique for photon detection. The HPD amplifies an electron in a vacuum tube and bombards it onto a silicon diode. For each impact, a gain of between 2000 and 3000 is achieved. A diode array converts the signal to pixels.
Hybrid Photo Diodes can be focused by proximity or electrostatically. A fiber-optic entry window is available as an option, to allow the HPD to process signals from scintillating fibers without a signal loss due to the coupling in the connection.
PHOTONIS, in conjunction with CERN, designed a custom Hybrid Photo Diode which has been installed in the Large Hadron Collider beauty (LHCb) project for accelerated particle detection. The HPD is also capable of operation at cryogenic temperatures, making it the ideal tool for Liquid Argon and Xenon detection.



 
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