Ihi Corporation

The University of Tokyo

National Institute of Radiological Sciences

The Director of National Aerospace Laboratory of Science and Technology

Hiroyuki Nose

Daisuke Ishida

Namio Kaneko

Mitsuru Uesaka

Katsuhiro Dobashi

Fumito Sakamoto

Yasuo Sakai

Akira Ito

Tetsuya Kobayashi

Hajime Kuwabara

Takehisa Takano

Hisaharu Sakae

Masashi Yamamoto

Atsushi Fukasawa

Kitao Takahara

Makoto Sasaki

Kimio Sakata

A method of non-destructive inspection of a subject body including an element is comprised of irradiating the subject body with a neutron ray through a first measurement point and a second measurement point; measuring an elapsed time after a first time point when a resonant neutron specific to the element passes through the first measurement point and before a second time point when a prompt gamma ray made emitted by the resonant neutron from the subject body is detected at the second measurement point; and determining a location of the element in the subject body by the first measurement point, the second measurement point, a relative position toward a surface of the subject body, and the elapsed time.

Non-destructive inspection method and device

A bearing (X) inside which a lubricant is able to be sealed is provided with: a rotary motion body (X) that moves when a rotation drive force is applied; and a rotation angle indicator (X) that is provided on the rotary motion body (X) and that is moved, in conjunction with the movement of the rotary motion body (X), to a position that corresponds to the rotation angle of the rotary motion body (X).

Bearing, lubricant distribution acquisition device and lubricant distribution acquisition method

The direction of the main axis of a bearing is adjusted by turning a supporting base () that is supporting the bearing, and by then receiving a neutron beam that has been transmitted through the bearing from the direction of the main axis thereof, and converting it into an electromagnetic wave, and by then forming images using the received electromagnetic wave, lubricant distribution data that shows the distribution of a lubricant inside the bearing is acquired.

Lubricant distribution acquisition device and lubricant distribution acquisition method

A method of non-destructive inspection of a subject body including one or more elements comprises irradiating the subject body with a neutron ray along an axis line passing through a reference point; synchronously detecting gamma rays from directions inclined at equal angles to the axis line at a plurality of measurement points disposed to have equivalent intervals radially from the axis line, respectively; measuring the detected gamma rays in a plurality of energy ranges; determining whether measured values in the respective energy ranges are beyond thresholds; determining energy ranges where all the measured values are beyond the thresholds; analyzing a type of an element from the determined energy ranges; and detecting a location of the analyzed type of the element in the subject body on the basis of the reference point, the respective measurement points, a relative position relative to a surface of the subject body, and the directions.

An X-ray waveform is generated by validating detection data corresponding to when an X-ray () is generated at a collision point () among X-ray detection data and invalidating other data. For example, when laser light () is pulse laser light and an electron beam () is a continuous electron beam or a pulse-like electron beam having a pulse width equal to or greater than that of the pulse laser light, the X-ray waveform is generated by detecting the laser light () and multiplying the X-ray detection data by laser light detection data after making time axes coincident with respect to the collision point ().

X-ray metering apparatus, and X-ray metering method

A charged particle beam decelerating device includes a high-frequency cavityprovided on an orbit of a charged particle beam, and a phase synchronizing devicefor synchronizing the charged particle beamin the high-frequency cavity with a phase of a high-frequency electric field. By moving the high-frequency cavityor changing an orbit length of the charged particle beam, the charged particle beam in the high-frequency cavity is synchronized with a phase of the high-frequency electric field

Charged particle beam decelerating device and method, and X-ray generating apparatus using the same

A high brightness X-ray generator and a high brightness X-ray generating method are provided which are able to promote an increase in X-ray brightness (i.e., an increase in an X-ray output) while suppressing an excessive increase in the cost of optical elements such as a laser unit, a mirror, and a lens. A high brightness X-ray generator generates an X-ray by inverse Compton scattering by colliding an electron beam with pulse laser light. There are provided a plurality of pulse laser units (A,B) which emits a plurality of pulse laser lights (a,b ) in predetermined periods, an optical-path matching unit () which matches optical paths of the plurality of pulse laser lights, and a timing control unit () which controls timings of the optical-path matching unit and the pulse laser units, wherein the plurality of pulse laser lights is emitted from the same optical path at different timings.

High brightness X-ray generating device and method

An electron beam detection device () is arranged on an electron beam passing path so that a beam delay time tfrom a passing moment of an electron beam () to a moment when the beam reaches a predicted collision point () is longer than a laser delay time tfrom a moment when a command for generating laser light () is issued to the moment when the laser light reaches the predicted collision point () by at least a predetermined delay time &#x394;t. The device () may detect passing therethrough without affecting the electron beam and output a laser light generation command from a laser light command delay circuit () when the predetermined delay time &#x394;t (=t&#x2212;t) has elapsed after the detection.

Device and method for adjusting collision timing between electron beam and laser light

A device for measuring profiles of an electron beam and a laser beam is provided with a profile measuring devicefor measuring cross-section profiles of the beams in the vicinity of a collision position where an electron beamand a laser beamare brought into frontal collision, and a moving devicefor continuously moving the profile measuring device in a predetermined direction which substantially coincides with the axial directions of the beams. Furthermore, based on the cross-section profiles measured by the profile measuring device, the position of the profile measuring device in the predetermined direction, and the oscillation timings of the beams, temporal changes in three-dimensional profiles of the electron beam and the laser beam are created by a profile creating device

Device and method for measuring profiles of electron beam and laser beam

A multi-color X-ray generator includes an electron beam generatorwhich accelerates an electron beam to generate a pulse electron beamand which transmits the beam along a predetermined rectilinear orbit, a composite laser generatorwhich successively generates a plurality of pulse laser lightshaving different wavelengths, and a laser light introduction devicewhich introduces the pulse laser lights along the rectilinear orbitto be opposed to the pulse electron beam, so that the plurality of pulse laser lightssuccessively head-on collide with the pulse electron beamalong the rectilinear orbitso as to generate two or more types of monochromatic hard X-rays().

Multi-color X-ray generator

There is disclosed a device including: an electron beam generation devicewhich accelerates a pulse electron beamto transmit the beam through a predetermined rectilinear orbit; a laser generation devicewhich generates a pulse laser light; a laser light introduction devicewhich introduces the pulse laser lightonto the rectilinear orbitso as to collide with the pulse electron beam; a metal targetwhich generates a particular X-rayby collision with the pulse electron beam: and a target moving devicecapable of moving the metal target between a collision positionon the rectilinear orbit and a retreat position out of the orbit.

Device for switching/generating x-rays for diagnosis and curing

A hollow, air-cooled turbine blade of the type having a plurality of ridges and projections extended inwardly from an interior surface of said blade, an insert snugly fitted into a space defined and supported by the ridges and projections and cooling air passages for communicating the space inside the insert with an exterior blade surface, said air passage including a first passage for communicating the space through a space defined between the insert and a wall of the blade with the exterior blade surface and a second air passage for communicating the space within the insert through at least some of the projections directly with the exterior blade surface.

Growing community of inventors

Tokyo, Japan

Hiroyuki Nose