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Photomultiplier and radiation detecting apparatus

A technology for photomultiplier tubes and electron multiplication, which is applied in the direction of electron multiplier tubes, electrode devices with multiple dynodes, detailed information of electron multipliers, etc., and can solve the problems of increasing the number of components and manufacturing processes

Active Publication Date: 2010-06-23
HAMAMATSU PHOTONICS KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the photomultiplier tube described in Patent Document 1, the photomultiplier tube ( figure 1 The above-mentioned device) requires sealing glasses corresponding to the number of stem feet, and at the same time, it is necessary to arrange these sealing glasses together with the stem feet on the position where the stem feet penetrate the stem, so there are parts numbers and manufacturing The problem of increasing the number of processes

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  • Photomultiplier and radiation detecting apparatus
  • Photomultiplier and radiation detecting apparatus
  • Photomultiplier and radiation detecting apparatus

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Embodiment Construction

[0050] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0051] Figure 1 to Figure 22It is a diagram showing a radiation detection device including a photomultiplier tube according to an embodiment of the present invention. In each figure, the same code|symbol is attached|subjected to the substantially same part, and repeated description is abbreviate|omitted. In addition, in the following description, terms such as "upper" and "lower" are used for convenience based on the states shown in the drawings.

[0052] figure 1 is a schematic cross-sectional view of the radiation detection device 1 of the present embodiment, figure 2 is along figure 1 A schematic cross-sectional view of the photomultiplier tube 10 on the II-II plane. like figure 1 , figure 2 As shown, the radiation detection device 1 is a device that detects incident radiation and outputs it as a signal, and has: a scintillator (scintillator) 3 that convert...

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Abstract

A vacuum vessel is configured by hermetically joining a faceplate (13) to one end of a side tube (15) and a stem (29) to the other end via a tubular member (31). A photocathode (14), a focusing electrode (17), dynodes (Dy1-Dy12), a drawing electrode (19), and anodes (25) are arranged within the vacuum vessel. The tubular member (31) is disposed on the periphery of the stem (29), and supporting pins (21) and lead pins (47) penetrate and are fixed to an extending section (32) that protrudes from the tubular member (31). The supporting pins (21) and the lead pins (47) are arranged in cutout portions (49, 24) of the dynodes (Dy1-Dy12) and the drawing electrode (19), thereby allowing effective areas of each electrode to be enlarged. Further, protuberant sections (33) are formed on the connecting sections of each pin with the stem (29), thereby facilitating thickness control of the stem.

Description

technical field [0001] The present invention relates to a photomultiplier tube and a radiation detection device using the photomultiplier tube. Background technique [0002] Conventionally, there is known a photomultiplier tube having a structure in which electrons emitted from a photoelectric surface provided on one side of a vacuum vessel are amplified by a dynode and detected by an anode, respectively. The stem leg connected to the dynode and the anode is assembled on the stem in a manner leading out from the vacuum container to the outside. Among such photomultiplier tubes, there are photomultiplier tubes in which each stem leg is mounted on a metal stem via each tapered sealing glass, and there are those in which each stem leg is directly mounted on a large tapered sealing glass. A photomultiplier tube on a glass-formed stem (for example, refer to Patent Document 1). In addition, there is an example in which a stem is formed by filling glass into a dish-shaped stem me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J43/22G01T1/20
CPCH01J43/22H01J43/28
Inventor 下井英树久嶋浩之
Owner HAMAMATSU PHOTONICS KK