Segmented photomultiplier tube with at least two ways disposed o

Details Segmented photomultiplier tube with at least two ways disposed o Segmented photomultiplier tube with at least two ways disposed o

1994-11-07

1997-01-28

Patel, Nimeshkumar

Electric lamp and discharge devices

Photosensitive

Photomultiplier

313533, 313537, 313542, 313544, 313524, 313530, H01J 4300

Patent

active

055980600

ABSTRACT:
A segmented photomultiplier tube having an electrode which, in its higher part acts as a focusing electrode for distributing photo-electrons on both sides of an axial plane, while in its lower part forming a collection cage, the photo-electrons undergo a first multiplication at the portions of the lateral walls, which are folded towards the axial plane. Apertures in a median plate of the electrode are covered by a highly transparent grid. The electrode is completed by a central partition which extends along the median plate just to the proximity of an input dynode of a laminated multiplier. A bar having a small cross-section may be provided, centered on the axial plane and receiving a potential near the potential across the photocathode. A plurality of these tubes can be arranged in a mosaic pattern for mapping luminous events.

REFERENCES:
patent: 4871943 (1989-10-01), Eschard
patent: 4999540 (1991-03-01), l'Hermite

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