Photomultiplier tube and radiation detecting device

Details Photomultiplier tube and radiation detecting device Photomultiplier tube and radiation detecting device

2011-03-15

2011-03-15

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S207000, C250S36100C, C313S532000, C313S1030CM

Reexamination Certificate

active

07906754

ABSTRACT:
A vacuum vessel (18) is configured by hermetically joining a faceplate (13) with one end of a side tube (15) and hermetically joining a stem (50) with another end via a ring-shaped side tube (37). Within the vacuum vessel (18), a focus electrode (17), dynodes (Dy1-Dy9), an anode (25), and a dynode (Dy10) are arranged from the side of a photocathode (14) provided to the faceplate (13). The dynode (Dy10) is supported on spacers (33) and a positioning protrusion (31) provided on the stem (50). The anode (25) is placed on support members (21). The focus electrode (17), the dynodes (Dy1-Dy9), and the anode (25) are stacked with inter-layer members (23) interposed therebetween, the inter-layer members (23) being located coaxially with the support members (21), to ensure high anti-vibration performance. Because the anode (25) and the dynode (Dy10) have no insulating body therebetween, light emission is suppressed and noises can be reduced.

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