Usoltceva, M., Heuraux, S., Bobkov, V., Faugel, H., Fünfgelder, H., Grenfell, G., et al. (2022). New technique for measuring low densities at the tokamak edge – concept, application on ASDEX Upgrade and prospects. Talk presented at 24th Topical Conference on High Temperature Plasma Diagnostics (HTPD 2022). Rochester, NY. 2022-05-15 - 2022-05-19.