Riken Corporation

Topcon Corporation

Hideyuki Sunaga

Yoshie Otake

Yuichi Yoshimura

Shigenori Nagano

Koji Ikado

Hisashi Tsukada

Hanako Aikoh

Tomohiro Kobayashi

Maki Mizuta

Xiaobo Li

A target structure includes a target and a cooling portion. The target generates neutrons by being irradiated with a charged particle beam. The cooling portion includes a front surface and a back surface that face to sides opposite to each other. The target is joined directly or indirectly to the front surface. A flow path for flowing of cooling liquid including hydrogen elements is formed in the cooling portion. When viewed in a thickness direction of the cooling portion from the front surface to the back surface, the flow path is positioned off a center portion of the target.

Target structure and target device

A neutron emission unit is configured to emit neutrons such that a center axis (Nh) of a neutron emission intersects a center axis direction of collimators (a toe). A calculation unit is capable of generating information about an inspection object in the center axis direction of the collimators, based on position information of a neutron detector and/or position information of the neutron emission unit, information about an angle (&#x3b8;) at which the center axis of the neutron emission intersects the center axis direction of the collimators, and a neutron amount detected by the neutron detector.

Nondestructive test system comprising a neutron emission unit for emitting fast neutrons and a neutron detection unit for detecting thermal neutrons, and nondestructive test method

A non-destructive inspection systemincludes a neutron radiation sourcecapable of emitting neutrons N, and a neutron detectorcapable of detecting neutrons Nb produced via an inspection objectamong neutrons N emitted from the neutron radiation source. The neutron radiation sourceincludes a linear acceleratorcapable of emitting charged particles P accelerated; a first magnet sectionincluding magnetsandfacing each other, the magnetsandbeing capable of deflecting the charged particles P in a direction substantially perpendicular to a direction of emission of the charged particles P from the linear accelerator; and a target sectioncapable of producing neutrons N by being irradiated with the charged particles P that have passed through the first magnet section

Non-destructive inspection system comprising neutron radiation source and neutron radiation method

A non-destructive inspection system includes: a neutron emission unitcapable of emitting neutrons pulsed; a neutron detector capable of detecting the neutrons emitted from the neutron emission unit and penetrating through an inspection object; a storage unit storing attenuation information indicating a relationship between a material of the inspection object and attenuation of the neutrons; and a calculation unit capable of calculating distance information indicating a position of a specific portion in the inspection object in accordance with time change information which is information on a change over time in an amount of the neutrons detected by the neutron detector. The calculation unit is capable of generating information related to an amount of the specific portion from information based on the amount of the neutrons according to the time change information, using the distance information and the attenuation information.

Nondestructive testing system and nondestructive testing method

The non-destructive inspection method includes: a water absorbing or drying step of changing a water-content state of a test piece; a transmission image capturing step of irradiating, with a radiation, the test piece absorbed water or dried for a predetermined time in the water absorbing or drying step and capturing a transmission image created by visualizing the radiation transmitted through the test piece; and an evaluation step of evaluating the test piece on the basis of the water-content state of the test piece determined from the transmission image captured in the transmission image capturing step.

Non-destructive inspection method

A non-destructive inspection systemincludes a neutron detecting unitand an arithmetic unit. The neutron detecting unitincludes a collimatorand a neutron detectorintegrated together. The collimatorhas a wall defining a through passage P. The wall is made from a material that absorbs neutrons produced via an inspection object. The neutron detectoris capable of detecting neutrons that have passed through the collimator. The arithmetic unitgenerates information on a position and composition of the inspection object, based on information on the neutrons detected by the neutron detector, positional information indicating the position of the neutron detecting unit, and posture information indicating the posture of the neutron detecting unit. The positional information and the posture information are detected by a position and posture detecting unit

Growing community of inventors

Wako, Japan

Hideyuki Sunaga