Position-Sensitive Detector with GaAs photocathode and high time resolution

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Tracking And Position-Sensitive Detectors, Photomultipliers, Phototubes And Photocathodes, Charge-Coupled Devices, Image Detectors, And Ir Detector Arrays, Ground-Based Ultraviolet, Optical And Infrared Telescopes

Scientific paper

The Position-Sensitive Detector (PSD) on base of GaAs photocathode and microchannel plate set has been developed. PSD consists of thick semi-conductor photocathode with quantum efficiency about 48% in the range of 4000-7500 A, two micro-channel plates, and 16-electrode collector. The detector has spatial resolution of 20-40 microns for about 5.102 pixels, time resolution of 1 μs and effective sensitivity up to 35%.

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