Photodetector and method for manufacturing it

Details Photodetector and method for manufacturing it Photodetector and method for manufacturing it

1998-07-16

2000-12-26

Lee, John R.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214VT, 313534, 313103CM, H01J 4304, H01J 4306

Patent

active

061663654

ABSTRACT:
A photosensor comprises a cathode portion (111) sensitive to radiation and/or particles, an anode portion (114) receiving electrons, an evacuated channel (112, 113, 200) having the cathode portion attached to its one end portion in a vacuum-tight manner and the anode portion attached to its other end portion in a vacuum-tight manner, a conductive or semiconductive layer (107) at least partially covering the inner surface of the evacuated channel, wherein the channel is formed of a tubular member (106). A method of manufacturing a channel electron multiplier comprises the steps of forming a tubular member and a conductive or semiconductive layer at least on parts of its inner surface, forming an anode portion and sealing it to the tubular member, evacuating the tubular member, forming a cathode portion sensitive to radiation and/or particles, and sealing the cathode portion to the evacuated tubular member. The detector may at least partially be packed into a casting compound.

REFERENCES:
patent: 3243628 (1966-03-01), Matheson
patent: 3634690 (1972-01-01), Grant
patent: 4671778 (1987-06-01), Musselman
patent: 4757229 (1988-07-01), Schmidt et al.
patent: 4967115 (1990-10-01), Scmidt et al.
patent: 5097173 (1992-03-01), Schmidt et al.
patent: 5632436 (1997-05-01), Niewold
patent: 5654536 (1997-08-01), Suyama et al.
patent: 5776538 (1998-07-01), Pierle et al.

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