A position sensitive microchannel photomultiplier for ultraviolet space astronomy

Astronomy and Astrophysics – Astronomy

Scientific paper

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Photomultiplier Tubes, Position (Location), Spaceborne Telescopes, Spacelab Payloads, Ultraviolet Astronomy, Charge Coupled Devices, Far Ultraviolet Radiation, Microchannels, Photocathodes, Quantum Efficiency, Spatial Resolution

Scientific paper

The 25-mm microchannel-plate, position-sensitive UV astronomy photomultiplier tube presented is intended for the EOM-1 Spacelab Mission's FAUST payload and conducts wide-field imaging surveys in the VUV over the 1400-1800-A range. The sealed detector encompasses a CsI photocathode deposited on the inner surface of a MgF2 window, a stack of microchannel plates, and a wedge-and-strip two-dimensional position-sensing anode. Since the wedge-and-strip principle requires only three anode signals, flight electronics can be reduced to three charge amplifiers and three analog-to-digital converters.

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