Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

National Institutes for Quantum and Radiological Science and Technology

Shigeki Takayama

Tomofumi Orikasa

Kei Koyanagi

Hiroshi Miyazaki

Taizo Tosaka

Kenji Tasaki

Takeshi Yoshiyuki

Yoshifumi Nagamoto

Takashi Yazawa

Takayuki Sako

Yusuke Ishii

Sadanori Iwai

Shinya Matsuda

Ikuo Watanabe

Takuji Furukawa

Yoshiharu Kanai

Yasumi Ootani

Kosuke Sato

According to one embodiment, a particle beam accelerator comprising: an injection unit configured to inject a particle beam; a guiding unit configured to guide the particle beam to a trajectory; an acceleration unit configured to accelerate the particle beam circulating on the trajectory; an emission unit configured to output the particle beam; a particle beam blocking unit configured to block the particle beam on the trajectory; a control unit configured to control the injection unit, the guiding unit, the acceleration unit, the emission unit, and the particle beam blocking unit, wherein: the guiding unit includes a superconducting electromagnet and a superconducting electromagnet interrupter configured to interrupt the superconducting electromagnet, the control unit is configured to change a starting sequence of the particle beam blocking unit and the superconducting electromagnet interrupter depending on at least an operating state of the emission unit, when an abnormality occurs in the superconducting electromagnet.

Particle beam accelerator, method for operating particle beam accelerator, and particle beam therapy apparatus

According to one embodiment, a particle beam accelerator comprising: a guiding unit configured to guide a particle beam to a trajectory; an acceleration unit configured to accelerate the particle beam circulating on the trajectory; a particle beam blocking unit configured to block the particle beam on the trajectory; and a control unit configured to control the guiding unit, the acceleration unit, and the particle beam blocking unit, wherein: the guiding unit includes a superconducting electromagnet and a superconducting electromagnet interrupter configured to interrupt the superconducting electromagnet, and the control unit is configured to interrupt the superconducting electromagnet by activating the superconducting electromagnet interrupter after completion of blocking the particle beam by activating the particle beam blocking unit, when an abnormality occurs in the superconducting electromagnet.

Particle beam accelerator, particle beam blocking method for particle beam accelerator, and particle beam therapy apparatus

A particle beam transport apparatus includes a vacuum duct, at least one magnet controller, and a scanning magnet. The vacuum duct is configured such that a particle beam advances through the vacuum duct. The magnet controller is disposed around a bent portion of the vacuum duct and is configured to control an advancing direction or shape of the particle beam. The scanning magnet is disposed on the downstream side of the magnet controller in the advancing direction and is configured to scan the particle beam by deflecting each bunch of the particle beam. The magnet controller includes a deflection magnet configured to deflect the advancing direction of the particle beam along the bent portion and a quadrupole magnet configured to converge the particle beam. The deflection magnet and the quadrupole magnet constitute a combined-function magnet arranged at the same point in the advancing direction.

Particle beam transport apparatus, rotary gantry, and particle beam irradiation treatment system

In a high-temperature superconducting conductora laminated bodyis formed by laminating a high-temperature superconducting layeron one side surface of a flexible and tape-shaped metal substratevia an intermediate layerand a plurality of thin film wiresare formed by providing a stabilization layeraround the laminated bodyvia a protective layerand are arranged in a thickness direction. The plurality of thin film wiresare connected at both ends in a width direction to each other in a conductible state in a longitudinal direction by means of conductive coupling memberin such a manner that a thin film wiredisposed at an outermost side is positioned with a surfaceon a side of the metal substratedirected outward and a surfaceof each of the plurality of thin film wiresfacing the high-temperature superconducting layeris held in a non-fixed state with respect to an opposing surface.

High-temperature superconducting conductor, high-temperature superconducting coil, and connecting structure of high-temperature superconducting coil

Provide a particle beam transport system that contribute to reduction of construction period and cost for a particle beam treatment facility including plural treatment rooms accommodating a particle-beam irradiation equipment. A particle beam transport systemincludes: a main lineconfigured to transport a particle beam generated by an accelerator outward; a branch linebranching from the main line; irradiation equipments(-) provided at respective ends of the branch lineand configured to irradiate a patient with the particle beam, wherein at least a part of the main lineand the branch lineis configured as plural segments; and beam characteristics of the particle beam of each of the plural segmentsare substantially equal at both ends.

Particle beam transport system, and segment thereof

A particle-beam control electromagnet capable of shortening a transportation path of a particle beam and an irradiation treatment apparatus which contributes to miniaturization and weight reduction of the rotating gantry supporting this control electromagnet are provided. The electromagnet includes a first superconducting coil group, a second superconducting coil group, and a vacuum vessel. The first superconducting coil group forms at least one of a bending magnetic field and a focus/defocus magnetic field. The second superconducting coil group is placed around the trajectory of the particle beam at the end of the first superconducting coil group and forms correction magnetic fields for correcting the trajectory of the particle beam. The vacuum vessel hermetically houses the first superconducting coil group, the second superconducting coil group, and a cooling medium, and insulates from the outside air.

Particle-beam control electromagnet and irradiation treatment apparatus equipped therewith

A charged particle beam irradiation apparatus according to an embodiment includes: a first scanning electromagnet device configured to deflect a charged particle beam to a second direction that is substantially perpendicular to a first direction along which the charged particle beam enters, the first scanning electromagnet device having an aperture on an outlet side larger than that on an inlet side; and a second scanning electromagnet device configured to deflect the charged particle beam to a third direction that is substantially perpendicular to the first direction and the second direction, the second scanning electromagnet device having an aperture on an outlet side larger than that on an inlet side, the first scanning electromagnet device and the second scanning electromagnet device being disposed to be parallel with the first direction.

Charged particle beam irradiation apparatus

According to an embodiment, a superconducting coil production device for producing a non-coplanar three-dimensional superconducting coil by winding a tape-like superconducting wire includes: a coil bobbin; a supply reel to supply the superconducting wire to the coil bobbin; and an adjustment driving unit to adjust a position of the supply reel relative to a wrapping point so that a position of the wrapping point of the coil bobbin around which the superconducting wire being supplied from the supply reel is wrapped becomes equal to a position of the supply reel in a rotational axis direction of the supply reel.

Superconducting coil production apparatus and superconducting coil production method

According to an embodiment, a superconductive coil device includes a non-coplanar three-dimensional superconductive saddle type coil including a wound superconductive wire. The superconductive saddle type coil includes: longitudinal portions extending along a longitudinal direction of a magnetic field generation area; crossing portions extending along an edge line of a cross section perpendicular to the longitudinal direction of the magnetic field generation area; and bent portions connecting the longitudinal portions and the crossing portions. The crossing portions are linear in shape when seen in the longitudinal direction.

Superconductive coil device

A connection structure of a multi-layer wire includes at least a substrate, a high-temperature superconducting layer, a tape-type laminated body, a conductor layer, and a passage forming body. The high-temperature superconducting layer is formed on one surface of the substrate. The tape-type laminated body including at least the substrate and the high-temperature superconducting layer. The conductor layer covering an outer periphery of the tape-type laminated body. The passage forming body serving as a flowing path of a superconducting current generated in the high-temperature superconducting wire piece. The passage forming body is bonded by a bonding material is arranged on a side surface of the conductor layer, the side surface being located on an opposite side to the high-temperature superconducting layer with respect to the substrate.

Connection structure of high-temperature superconducting wire piece, high-temperature superconducting wire using connection structure, and high-temperature superconducting coil using connection structure

Growing community of inventors

Yokohama, Japan

Shigeki Takayama