Apparatus and method of using PMT having wrap-around circuitry

Details Apparatus and method of using PMT having wrap-around circuitry Apparatus and method of using PMT having wrap-around circuitry

1994-05-24

1996-06-04

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250207, 313103R, H01J 4014

Patent

active

055235565

ABSTRACT:
A Cockcroft-Walton (CW) multiplying circuit is mounted to wrap around a cylindrical structure. A photomultiplier tube (PMT) has a photocathode which emits electrons and has dynodes connected to the CW multiplying circuit. The dynodes are biased to attract electrons from the photocathode. An electrical shield surrounds the PMT and the PMT nests within the shield. The cylindrical structure surrounds the shield and the shield nests within the cylindrical structure. The shield is a conductive material which electrically isolates the PMT from the CW multiplying circuit.

REFERENCES:
patent: 4376246 (1983-03-01), Butterwick
patent: 4639638 (1987-01-01), Purcell et al.
patent: 4642735 (1987-02-01), Hodsdon et al.
patent: 4924080 (1990-05-01), Caserta et al.
patent: 5118925 (1992-06-01), Mims et al.
patent: 5191517 (1993-03-01), Stephenson

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