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Bolometer position |
Main | Bolometers | Collecting data & | Output | Measurement &
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The first array equipped with 16 channels is placed inside the bottom tokamak port at the distance of 267 mm from a plasma centre; the second one operating with 19 channels is located at the same poloidal cut and placed inside the horizontal port at low field side (LFS) at the distance of 342 mm from a plasma centre. >> calibration |  |
| Bolometers look at the plasma column through the aperture slit (“camera obscura”). The slits have rectangular shape with the size 4 x 0.2 mm and 4 x 0.19 mm respectively, what was optimised to reach reasonable intensity together with the requested spatial resolution of 11 mm and 9 mm. Each channel detects a plasma radiation along the appropriate chord covering the whole poloidal plasma cross-section of 17 cm in diameter, so that a spatial profile of the radiated power can be reconstructed. |
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