Photomultiplier tube with an avalanche photodiode, a flat input

Details Photomultiplier tube with an avalanche photodiode, a flat input Photomultiplier tube with an avalanche photodiode, a flat input

1994-05-23

1996-02-20

Yusko, Donald J.

Electric lamp and discharge devices

Photosensitive

Having a control electrode

313532, H01J 3150

Patent

active

054931762

ABSTRACT:
A photomultiplier uses an avalanche photodiode as a position-sensitive anode. The envelope of the photomultiplier has a flat input end. Electrically conductive regions mounted to the input end are configured to produce at the input end a potential distribution characteristic of a photomultiplier with a spherical-type input end as measured in a transverse plane immediately adjacent the spherical-type input end. A photocathode is located inside the photomultiplier and is electrically connected to the electrically conductivew regions. Advantageously, the envelope has flat sides and a square cross-section; in this instance, conductors are run along the sides to produce within the envelope a potential distribution characteristic of a photomultiplier which is cylindrical in cross-section, as measured at flat surfaces having the same shape as the envelope.

REFERENCES:
patent: 3885178 (1975-05-01), Goehner
patent: 4006376 (1977-02-01), Faulkner et al.
patent: 5374826 (1994-12-01), LaRue et al.
Eric Munro, Numerical Modeling of Electron and Ion Optics on Personal Computers, Nov./Dec. 1990, pp. 1657-1665, J. Vac. Sci. Tech.
C. D'Ambrosio et al., Photon Counting With a Hybrid Photomultiplier Tube (HPMT), 1994, pp. 389-397, Nuclear Instruments & Methods in Physics Res.
A paper by Szawlowski et al. distributed during the Nuclear Science Symposium & Med. Imaging Conference, Oct. 31, 1993-Nov. 6, 1993.
Illes P. Csorba, Image Tubes, pp. 61-63.

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