Tangential Fiber Array for Zeff measurement


[Objectives]
To measure intensity of visible bremsstrahlung for determination of Zeff

[Detectors, Diagnostic Method]
Light collected by a lens is transmitted by optical fibers from the torus hall to a diagnostic room.

The light from the optical fibers passes interference filters and are detected with photomultipliers.

[Specification]
-Time resolution: 100 ms
-Spatial resolution: 20 cm (13 ch.)
-Wavelength: 523.1 0.5 nm
-Position: P-5 side port

[Reference]
H. Kubo, et al., "Impurity generation mechanism and remote radiative cooling in JT-60U divertor discharges", J. Nucl. Mater. 196 - 198 (1992) 71.

cf. Fiber Optics for Zeff measurement (Vertical), P4