Analysis of Neutral Transport in the GAMMA10 Anchor-Cell Using Hα[roman]-Emission Detectors

The neutral transport was studied in the anchor cell. The Hα line intensities were measured by using axially aligned Hα detectors. It was found that the intensity is considerably dependent on ECRH and GP#3,4. A 5ch Hα detector was newly installed in the outer-transition region of the anchor-cell. From the measurement of the spatial distributions, the vertical intensity profile is estimated to be about 2.5 cm on the half width half maximum, while the horizontal distribution shows roughly flat around Z=-670 cm. The above characteristics were discussed with aid of neutral transport simulation using DEGAS Monte-Carlo Code.