Light guides for particle detectors, CERN

Light guides for particle detectors, CERN

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Restrictions: Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service

Caption: A variety of acrylic "light guides" used in particle detectors at CERN, the European particle physics laboratory near Geneva. The light guides transmit faint scintillations of light produced when charged particles traverse sheets or blocks of plastic scintillator. The base of the light guide will fit against a photomultiplier tube that converts the light into electrical signals. The whole structure will be wrapped in reflecting foil & then with layers of black tape, to make it light-tight. The delicate shapes of the light guides are designed so that the light from the different parts of the scintillator arrive at the photomultiplier tube at the same time.

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Keywords: cern, detector, european centre for, geneva, in physics, light guide, nuclear research, particle physics laboratory, plastic scintillator, scintillator, switzerland

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