公开(公告)号：EP1313133A4

公开(公告)日：2007-04-11

申请号：EP01951936

申请日：2001-07-19

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KIMURA SUENORI ,  FURUHASHI MASAMI ,  ISHIZU TOMOHIRO ,  ITO MASUO

IPC: H01J43/20 ,  H01J43/18

CPC classification number: H01J43/18

Abstract: A photomultiplier excellent in vibration resistance and improved in pulse linearity characteristic and time-response. The dynodes (Dy4, Dy6 to Dy9) of the fourth, and sixth to ninth stages have a similar shape to that of the dynode (Dy2) of the second stage. The dynodes (dy3, Dy5) of the third and fifth stages are smaller than the dynode (Dy2). Dynodes (Dy1 to Dy10) of ten stages are so arranged that the dynode inner space path defined between opposed dynodes is perpendicular to the tube axis (X). The anode (A) is a mesh anode (A) and is opposed to the dynode (Dy2) with respect to the tube axis (X).

Abstract translation: 一种光电倍增管，具有优异的抗振动能力，脉冲线性特性和时间响应得到改善。 第四和第六至第九级的倍增极（Dy4，Dy6至Dy9）具有与第二级的倍增电极（Dy2）类似的形状。 第三和第五级的倍增电极（dy3，Dy5）小于倍增电极（Dy2）。 十级的Dynode（Dy1至Dy10）布置成使得在相对的倍增电极之间限定的打拿极内部空间路径垂直于管轴线（X）。 阳极（A）是网状阳极（A），并且相对于管轴（X）与倍增电极（Dy2）相对。

公开(公告)号：EP1077470A4

公开(公告)日：2007-01-17

申请号：EP99922627

申请日：1999-06-01

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KYUSHIMA HIROYUKI ,  ATSUMI AKIRA ,  SHIMOI HIDEKI ,  OKADA TOMOYUKI ,  ITO MASUO

IPC: G01N23/04 ,  G01N23/08 ,  H01J43/04 ,  H01J43/28

CPC classification number: H01J43/04 ,  G01N23/046 ,  G01N23/08 ,  G01N2223/419 ,  H01J43/28

Abstract: A photomultiplier tube unit including photomultiplier tubes densely assembled and thereby having an improved light sensing efficiency. The outer surfaces (2b) of metal side tubes (2) of photomultiplier tubes (1) are in facial contact with one another, and thereby a high-density arrangement of photomultiplier tubes (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 tube (1), facilitating the assembling of the photomultiplier tube unit. When a required photomultiplier tube (1) in a device (e.g., a gamma camera) having thus-united multiple photomultiplier tubes is replaced with a new one, the troublesome work of replacing photomultiplier tubes one by one is obviated, simplifying the replacement work.

Abstract translation: 包括密集组装的光电倍增器的光电倍增器单元，从而具有改进的光感测效率。 光电倍增管（1）的金属制侧管（2）的外周面（2b）彼此面接触，从而实现光电倍增管（1）的高密度排列。 侧管（2）可以彼此电连接，因此侧管（2）可以容易地等电位。 结果，不需要将管脚（10）与每个光电倍增管（1）的侧管（2）电连接，便于组装光电倍增管单元。 当具有如此合并的多个光电倍增器的装置（例如，伽马照相机）中的所需光电倍增管（1）被替换为新光电倍增管时，取消了逐个更换光电倍增管的麻烦工作，从而简化了替换工作。

公开(公告)号：EP1052674A4

公开(公告)日：2001-02-14

申请号：EP99902845

申请日：1999-02-05

Applicant: HAMAMATSU PHOTONICS KK

Inventor： OKADA TOMOYUKI ,  ITO MASUO ,  NAKAMURA KIMITSUGU ,  ISHIHARA YOSHITOSHI ,  NAKAMURA TSUTOMU ,  INAZURU TUTOMU

IPC: H01J35/08 ,  H01J35/14 ,  H05G1/02 ,  H01J35/00

CPC classification number: H01J35/14 ,  H01J2235/165 ,  H05G1/02

Abstract: An X-ray tube includes a target whose end is provided with a hood electrode having an opening for passing electrons, and the opening is widened in the opposite direction of an X-ray window so that electrons from an electron gun may impinge on the target toward its end, resulting in a shorter distance from the X-ray window to the point where X-rays are released.