PHOTOMULTIPLIER UNIT AND RADIATION SENSOR

Title:

PHOTOMULTIPLIER UNIT AND RADIATION SENSOR

Document Type and Number:

WIPO Patent Application WO/1999/063573

Kind Code:

A1

Abstract:

A photomultiplier unit comprising photomultipliers densely assembled and thereby having an improved light sensing efficiency. The outer peripheral faces (2b) of metal-made side tubes (2) of photomultipliers (1) are in face contact with one another, and thereby a high-density arrangement of photomultipliers (1) are achieved. The side tubes (2) can be electrically connected to one another, and therefore the side tubes (2) can be easily made equipotential. As a result, it is unnecessary to electrically connect the stem pin (10) to the side tube (2) of each photomultiplier (1), facilitating the assembling of the photomultiplier unit. When a required photomultiplier (1) in a device (e.g., a gamma camera) having thus-united multiple photomultipliers is replaced with a new one, the troublesome work of replacing photomultipliers one by one is obviated, simplifying the replacement work.

Inventors:

KYUSHIMA HIROYUKI (JP)
ATSUMI AKIRA (JP)
SHIMOI HIDEKI (JP)
OKADA TOMOYUKI (JP)
ITO MASUO (JP)

Application Number:

PCT/JP1999/002921

Publication Date:

December 09, 1999

Filing Date:

June 01, 1999

Export Citation:

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Assignee:

HAMAMATSU PHOTONICS KK (JP)
KYUSHIMA HIROYUKI (JP)
ATSUMI AKIRA (JP)
SHIMOI HIDEKI (JP)
OKADA TOMOYUKI (JP)
ITO MASUO (JP)

International Classes:

G01N23/04; G01N23/08; H01J43/04; H01J43/28; (IPC1-7): H01J43/28

Foreign References:

JPH0536372A	1993-02-12
JPH05281362A	1993-10-29

Other References: