A computer-aided design drawing of the median port configuration. The top view image of the KSTAR torus shows the position of the fast framing camera and where the camera is looking at. The fast camera is installed with a tangential view of the tokamak.
A 3D drawing of the viewport cassette system and its installation. A -long viewport having pneumatic remote shutter (c) and its optical rail system (d) were installed on median port (b) in KSTAR. (a) is an inner view of the port. The camera and its optical components are next to the window at present, but the optical rail is designed to allow installation of additional lenses and/or borescope (or imaging fibers) in case of future needs.
Block diagram of the fast camera system.
(a) Magnetic field and (b) time rate of field change vs radial distance at . The camera and its electronics are placed from .
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