Secondary electron multiplier

Details Secondary electron multiplier Secondary electron multiplier

1989-08-11

1991-01-22

Yusko, Donald J.

Electric lamp and discharge devices

Photosensitive

Secondary emitter type

313103CM, 250207, H01J 4304

Patent

active

049873350

ABSTRACT:
A structure for supporting a funnel portion of a secondary electron multiplying tube in a secondary electron multiplier. In the supporting structure for the funnel portion, a support member has a circular contact element for supporting an end face of a mouth of the funnel, and nails formed along the outer periphery of the circular contact element so as to grasp the mouth end portion of the funnel from the outside thereof. A press member is welded to the support member into which the funnel portion is inserted. The posture and position of the funnel portion are correctly determined in relation to an opening of a Farady cup, by fixing the support member to a casing of the secondary electron multiplier.

REFERENCES:
patent: 4652788 (1987-03-01), Lauche et al.
patent: 4757229 (1988-07-01), Schmidt et al.

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