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Journal Articles

Design study of a wide-angle infrared thermography and visible observation diagnostic on JT-60SA

Kamiya, Kensaku; Itami, Kiyoshi; Takeuchi, Masaki; Enokuchi, Akito*

Fusion Engineering and Design, 89(12), p.3089 - 3094, 2014/12

 Times Cited Count:1 Percentile:10.7(Nuclear Science & Technology)

Design study of a wide-angle infrared (IR) thermography and visible observation diagnostics for JT-60SA are reported. In order to image a large section inside the vacuum vessel (both in poloidal and toroidal directions), the optical system of endoscope is to provide a wide-angle view in the IR and visible range, which is being designed with a field of view of 106 degrees vertical and 63 degrees horizontal. The estimated spatial resolution is better than a few cm at a distance of 7.6 m from the front optics with a slit diameter of 4 mm.

Oral presentation

Development of a wide-angle view endoscope for first wall and divertor regions on JT-60SA

Kamiya, Kensaku; Itami, Kiyoshi; Enokuchi, Akito*

no journal, , 

Design study of a wide-angle infrared IR thermography and visible observation diagnostics for JT-60SA are reported. In order to image a large section inside the vacuum vessel of both in poloidal and toroidal directions, the optical system of endoscope is being designed with a field of view of 80 degrees having the spatial resolution better than a few cm. The optics of the system can be divided into three parts. A mirror based optical head (two set of spherical mirrors plus two flat mirrors), creating an intermediate image, a Cassegrain telescope system, and individual lens based imaging optics adapted to the various detectors for IR and visible observations, with their optical light paths being separated by in-vacuum small mirror. It makes possible to provide a optical solution without a blind spot, i.e. no image detection area.

Oral presentation

Development of a wide-angle infrared thermography and visible view endoscope for JT-60SA

Kamiya, Kensaku; Itami, Kiyoshi; Enokuchi, Akito*

no journal, , 

Design study of a wide-angle infrared thermography and visible observation diagnostics for JT-60SA are reported. In order to image a large section inside the vacuum vessel, the optical system of endoscope is to provide a wide-angle view in the IR and visible range, which is being designed with a field of view of 106 degrees vertical and 63 degrees horizontal. The estimated spatial resolution is better than a few cm at a distance of 8 m from the front optics with a slit diameter of 4 mm.

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