Photomultiplier having lamination structure of fine mesh dynodes

Details Photomultiplier having lamination structure of fine mesh dynodes Photomultiplier having lamination structure of fine mesh dynodes

1996-05-17

1998-11-24

Patel, Ashok

Electric lamp and discharge devices

Photosensitive

Photomultiplier

313533, H01J 4304

Patent

active

058412310

ABSTRACT:
The present invention concerns a photomultiplier having a lamination structure of fine mesh dynodes arranged at predetermined intervals, capable of detecting photons even in a high magnetic field. This photomultiplier is arranged so that hollow pipes penetrating electrodes for supporting the fine mesh dynodes define the lamination structure of an electron multiplier unit. This arrangement permits the intervals between the fine mesh dynodes to be accurately controlled, thereby obtaining the photomultiplier production errors of which are well suppressed and preventing that the fine mesh dynodes are ripped.

REFERENCES:
patent: 3114044 (1963-12-01), Sternglass
patent: 4871943 (1989-10-01), Eschard
patent: 5572089 (1996-11-01), Kyushima
Janoth et al, "Response of Mesh-Type Photomultiplier Tubes in Strong Magnetic Fields", Nuclear Instruments and Methods in Physics Research A 350 (1994) pp. 221-225.
Hearty, "Detection of Small Light Pulses and Pulse Height Resolution of a Fine Mesh Photomultiplier Tube", Nuclear Instruments of Methods in Physics Research A 365 (1995), pp. 83-87 Fujii et al, Tests of Photon-Detection Devices in Strong Magnetic Fileds, Nuclear Instruments and methods in Physics Research A 366 (1995), pp. 71-75.
Barbiellini et al, "A Simulation Study of the Behaviour of Fine Mesh Photomultipliers in Magnetic Field", Nuclear Instruments of Methods in Physics Research A362 (1995), pp. 245-252.

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