Dust Observation in the COMPASS Tokamak Using Fast Camera
نویسندگان
چکیده
The dust grains were observed over a thousand discharges in the tokamak COMPASS. A novel method for semi-automatic extraction and tracking of dust grains using a relatively low frame-rate camera (370 fps) was proposed. Radiation lifetime, time evolution and the acceleration of the dust grains were studied. The measured dust velocities roughly correspond to a simple model. However, slow dust particles are significantly affected by local plasma properties and initial release conditions that cannot be determined in our experiment.
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