Hitachi, Ltd.

Hitachi Cable, Inc.

Nippon Telephone and Telegraph Corporation

Hitachi Service Engineering, Ltd.

Yoshiaki Kazawa

Koji Noguchi

Manabu Matsumoto

Takashi Ikeguchi

Tadasi Sonobe

Toshiaki Kobari

Shinjiroo Ueda

Toru Murashita

Shunji Kakiuchi

Satoshi Ido

Kazuo Kuroishi

Shuji Sakai

Shohei Suzuki

Takamasa Fujinaga

Masato Nagao

Yoshiyasu Ito

Ryoichi Mashiko

Hidezumi Moriai

Ryusei Saito

Keizou Wase

An industrial compact synchrotron radiation source which can improve vacuum evacuation performance to prolong life-time of a charged particle beam and supply highly intensive stable synchrotron radiation. In the source, a charged particle beam bending duct forming a vacuum chamber through which the charged particle beam circulates is encompassed by a bending electromagnet, and at least one SR guide duct for guiding the radiation to outside extends from the outer circumferential wall of the bending duct. The SR guide duct is connected through a gate valve to an SR beam line duct for guiding the SR beam to an object to be worked and a vacuum pump is disposed on the side, close to an orbit of the charged particle beam, of the gate valve. The SR guide duct extending from the outer circumferential wall of the bending duct takes a form of a divergent duct which is widened in accordance with a spreading angle of the SR beam traveling through the SR guide duct.

Synchrotron radiation source

A superconductor which includes a housing of a highly pure copper having a slot therein for accommodating a plurality of monolithic superconductor members and a reinforcing member. A highly pure aluminum lid or cover is adapted to be disposed in an opening of the slot, with outer surfaces of the lid or cover having arranged thereon highly pure copper. The lid or cover, the monolithic superconductor members, the reinforcing member, and the housing are integrated and bonded together by a bonding material such as, for example, solder.

Integrated superconductor

In a nuclear fusion device having a torus type vacuum shell around which toroidal coils and poloidal coils are wound and arranged and whose interior is maintained in a high vacuum state, the bending rigidity of a shell wall in a circular cross section of the vacuum shell is made higher on the outer periphery side than on the inner periphery side of the circular cross section, thereby to prevent any deformation of the vacuum shell due to a magnetic force and any damage of the shell attendant upon the deformation in a process in which the coils are energized to confine a plasma within the vacuum shell. Moreover, without increasing the inner diameter of the circular cross section of the vacuum shell, the coils are located in proximity to the plasma so as to enhance the plasma producing efficiency.

Torus type vacuum shell

Growing community of inventors

Hitachi, Japan

Yoshiaki Kazawa