Hamamatsu-Photonics K.k.

Yasuyuki Kohno

Tsuyoshi Kodama

Hideki Shimoi

Shinichi Hara

Keisuke Inoue

Hiroyuki Sugiyama

Hitoshi Kishita

Yusuke Hasegawa

Ryota Kakei

Kazuto Ohashi

Hiroyuki Kageyama

A first member made of an insulating material and a jig with a protrusion narrowing toward a distal end side are prepared, and at least one of the first member and the jig is heated to a temperature at which the first member can melt and deform. After the jig is brought into contact with the first member with the first member and the plurality of protrusions facing each other, the jig is removed, and an intermediate body is formed including the first member formed with a plurality of recesses, and a plurality of conductive members passing through the first member and projecting into the recesses. A second member is prepared, openings of the plurality of recesses are closed, and the second member is hermetically joined to the intermediate body to form a plurality of internal spaces where electron is emitted, and forming a joined body.

Manufacturing method of electron tube

An electron tube includes a housing having an internal space airtightly sealed, and an electrode configured to generation or detection of energy by electron emission in the internal space. The housing has a main body part made of an insulating material and formed with a recess constituting the internal space, and a lid part fixed to the main body part so as to close an opening of the recess. The recess expands toward the opening side. The main body part is fixed with a penetrating member that is electrically connected to the electrode and passes through the main body part. The penetrating member has an internal space projecting part that projects from a bottom surface of the recess into the internal space.

Electron tube

A photomultiplier tube including a casing having a glass substrate with a main surface made with an insulating material, dynodes having a 1stage to an Nstage which are arrayed to be spaced away sequentially from a first end side to a second end side on the main surface, a photocathode installed on the first end side to be spaced away from the 1stage dynode to emit photoelectrons, and an anode part installed on the second end side to be spaced away from the Nstage dynode, wherein a groove is formed between two adjacent dynodes on the main surface of the glass substrate, and the 1stage to the Nstage dynodes are fixed on raised parts adjacent to the grooves.

Photomultiplier tube

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Hamamatsu, Japan

Yasuyuki Kohno